def __init__(self, template, debug=False, dry_run=False):
self.config = Configuration()
self.debug = debug
self.dry_run = dry_run
# The work queue will figure out a valid combination of MongoDB access
# parameters, e.g., host/port, URI, or replica set discovery via DNS
self.wq = WorkQueue(host=self.config.mongodb_host,
port=self.config.mongodb_port,
uri=self.config.mongodb_uri,
srv_name=self.config.mongodb_rs_srv,
database=self.config.mongodb_queue_db,
replicaset=self.config.mongodb_rs,
collection=self.config.mongodb_queue_col)
if not os.path.exists(template):
raise Exception("Template file does not exist")
self.template_dir = os.path.dirname(template)
self.template_file = os.path.basename(template)
if self.template_file == "":
raise Exception("Template must be a file, not a directory")
self.jinja = jinja2.Environment(loader=jinja2.FileSystemLoader(
self.template_dir),
autoescape=False)
def init_generator(self,
module,
source,
node_type,
instance_id,
collectors,
client_context,
http_port,
sandesh_req_uve_pkg_list=None,
discovery_client=None,
connect_to_collector=True,
logger_class=None,
logger_config_file=None,
host_ip='127.0.0.1',
alarm_ack_callback=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._host_ip = host_ip
self._client_context = client_context
self._collectors = collectors
self._connect_to_collector = connect_to_collector
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._init_logger(module,
logger_class=logger_class,
logger_config_file=logger_config_file)
self._logger.info('SANDESH: CONNECT TO COLLECTOR: %s',
connect_to_collector)
self._stats = SandeshStats()
self._trace = trace.Trace()
self._sandesh_request_dict = {}
self._alarm_ack_callback = alarm_ack_callback
self._uve_type_maps = SandeshUVETypeMaps(self._logger)
if sandesh_req_uve_pkg_list is None:
sandesh_req_uve_pkg_list = []
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
self._gev_httpd = None
if http_port != -1:
self._http_server = SandeshHttp(self, module, http_port,
sandesh_req_uve_pkg_list)
self._gev_httpd = gevent.spawn(self._http_server.start_http_server)
primary_collector = None
secondary_collector = None
if self._collectors is not None:
if len(self._collectors) > 0:
primary_collector = self._collectors[0]
if len(self._collectors) > 1:
secondary_collector = self._collectors[1]
if self._connect_to_collector:
self._client = SandeshClient(self, primary_collector,
secondary_collector, discovery_client)
self._client.initiate()
def run(self, args):
topic_mgr = self.get_topic_manager()
if not topic_mgr:
print('invalid proxy')
return 2
topic_name = "ProgressTopic"
try:
topic = topic_mgr.retrieve(topic_name)
except IceStorm.NoSuchTopic:
topic = topic_mgr.create(topic_name)
publisher = topic.getPublisher()
progress = Downloader.ProgressEventPrx.uncheckedCast(publisher)
if progress is None:
print("Progress topic not found")
work_queue = WorkQueue(progress)
ic = self.communicator()
adapter = ic.createObjectAdapter("FactoryAdapter")
servant = SchedulerFactoryI(work_queue, ic)
proxy = adapter.add(servant, ic.stringToIdentity("Factory1"))
work_queue.start()
adapter.activate()
print(proxy, flush=True)
self.shutdownOnInterrupt()
ic.waitForShutdown()
return 0
def init_generator(self,
module,
source,
node_type,
instance_id,
collectors,
client_context,
http_port,
sandesh_req_uve_pkg_list=None,
connect_to_collector=True,
logger_class=None,
logger_config_file=None,
host_ip='127.0.0.1',
alarm_ack_callback=None,
config=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._sandesh_req_uve_pkg_list = sandesh_req_uve_pkg_list or []
self._host_ip = host_ip
self._client_context = client_context
self._connect_to_collector = connect_to_collector
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._send_level = SandeshLevel.INVALID
self._init_logger(self._module,
logger_class=logger_class,
logger_config_file=logger_config_file)
self._logger.info('SANDESH: CONNECT TO COLLECTOR: %s',
connect_to_collector)
from sandesh_stats import SandeshMessageStatistics
self._msg_stats = SandeshMessageStatistics()
self._trace = trace.Trace()
self._sandesh_request_map = {}
self._alarm_ack_callback = alarm_ack_callback
self._config = config or SandeshConfig.from_parser_arguments()
self._uve_type_maps = SandeshUVETypeMaps(self._logger)
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
self._sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in self._sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
if self._config.disable_object_logs is not None:
self.disable_sending_object_logs(self._config.disable_object_logs)
if self._config.system_logs_rate_limit is not None:
SandeshSystem.set_sandesh_send_rate_limit(
self._config.system_logs_rate_limit)
self._gev_httpd = None
if http_port != -1:
self.run_introspect_server(http_port)
if self._connect_to_collector:
self._client = SandeshClient(self)
self._client.initiate(collectors)
def __init__(self, sandesh_instance, server, event_handler,
sandesh_msg_handler):
self._sandesh_instance = sandesh_instance
self._logger = sandesh_instance._logger
self._event_handler = event_handler
self._reader = SandeshReader(self, sandesh_msg_handler)
self._writer = SandeshWriter(self)
self._send_queue = WorkQueue(self._send_sandesh,
self._is_ready_to_send_sandesh)
TcpSession.__init__(self, server)
def main():
args = parse_args()
# Create a temporary file store for task results.
tmpdir = tempfile.mkdtemp()
# Load the task input data here
task_inputs = load_inputs()
print('Creating tasks')
tasks = generate_tasks(args.command, task_inputs,
args.infiles, args.outfile,
tmpdir, args.max_retries)
# Create the Work Queue master that manages task distribution.
work_queue.cctools_debug_flags_set("all")
work_queue.cctools_debug_config_file(f'{args.name}.debug')
work_queue.cctools_debug_config_file_size(0)
wq = WorkQueue(port=args.port, name=args.name, shutdown=True)
wq.specify_log(f'{args.name}.log')
# Submit all tasks to the queue.
print('Submitting tasks')
for t in tasks.values():
wq.submit(t)
# The main loop waits for a task to get done then handles success or
# failure accordingly
print('Entering main loop')
while not all([done_check(t) for t in tasks.values()]):
t = wq.wait(10) # This blocks for 10s or until a task is done.
if t is not None:
tasks[t.tag] = t # Update the task map with the correct status
# On success, post-process the task. If the maximum number of
# submissions for a task has been reached, make a note. Otherwise,
# report the failure and resubmit.
if t.return_status == 0 and t.result == WORK_QUEUE_RESULT_SUCCESS:
print(f'Task {t.tag} completed successfully.')
input_idx = int(t.tag.split('_')[1])
handle_success(t, tmpdir, args.outfile)
elif t.result == WORK_QUEUE_RESULT_MAX_RETRIES:
print(f'Task {t.tag} resubmitted too many times.')
else:
wq.submit(t)
print(f'Task {t.tag} failed with result {t.result}')
print(t.output)
print('All tasks completed or hit max retries.')
print('Cleaning up...')
shutil.rmtree(tmpdir)
print('Done')
def init_generator(self, module, source, collectors, client_context,
http_port, sandesh_req_uve_pkg_list=None,
discovery_client=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._client_context = client_context
self._collectors = collectors
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._init_logger(module)
self._stats = SandeshStats()
self._trace = trace.Trace()
self._sandesh_request_dict = {}
self._uve_type_maps = SandeshUVETypeMaps()
if sandesh_req_uve_pkg_list is None:
sandesh_req_uve_pkg_list = []
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
self._http_server = SandeshHttp(self, module, http_port, sandesh_req_uve_pkg_list)
primary_collector = None
secondary_collector = None
if self._collectors is not None:
if len(self._collectors) > 0:
primary_collector = self._collectors[0]
if len(self._collectors) > 1:
secondary_collector = self._collectors[1]
gevent.spawn(self._http_server.start_http_server)
self._client = SandeshClient(self, primary_collector, secondary_collector,
discovery_client)
self._client.initiate()
def init_generator(self,
module,
source,
node_type,
instance_id,
collectors,
client_context,
http_port,
sandesh_req_uve_pkg_list=None,
discovery_client=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._client_context = client_context
self._collectors = collectors
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._init_logger(source + ':' + module + ':' + node_type + ':' \
+ instance_id)
self._stats = SandeshStats()
self._trace = trace.Trace()
self._sandesh_request_dict = {}
self._uve_type_maps = SandeshUVETypeMaps()
if sandesh_req_uve_pkg_list is None:
sandesh_req_uve_pkg_list = []
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
if http_port != -1:
self._http_server = SandeshHttp(self, module, http_port,
sandesh_req_uve_pkg_list)
gevent.spawn(self._http_server.start_http_server)
primary_collector = None
secondary_collector = None
if self._collectors is not None:
if len(self._collectors) > 0:
primary_collector = self._collectors[0]
if len(self._collectors) > 1:
secondary_collector = self._collectors[1]
self._client = SandeshClient(self, primary_collector,
secondary_collector, discovery_client)
self._client.initiate()
def run(self, argv):
work_queue = WorkQueue()
servant = MathI(work_queue)
broker = self.communicator()
adapter = broker.createObjectAdapter("MathAdapter")
print adapter.add(servant, broker.stringToIdentity("math1"))
adapter.activate()
work_queue.start()
self.shutdownOnInterrupt()
broker.waitForShutdown()
work_queue.destroy()
return 0
def __init__(self, sandesh_instance, server, event_handler, sandesh_msg_handler):
self._sandesh_instance = sandesh_instance
self._logger = sandesh_instance._logger
self._event_handler = event_handler
self._reader = SandeshReader(self, sandesh_msg_handler)
self._writer = SandeshWriter(self)
self._send_queue = WorkQueue(self._send_sandesh, self._is_ready_to_send_sandesh)
TcpSession.__init__(self, server)
def init_generator(self, module, source, node_type, instance_id,
collectors, client_context,
http_port, sandesh_req_uve_pkg_list=None,
discovery_client=None, connect_to_collector=True,
logger_class=None, logger_config_file=None,
host_ip='127.0.0.1', alarm_ack_callback=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._host_ip = host_ip
self._client_context = client_context
self._collectors = collectors
self._connect_to_collector = connect_to_collector
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._send_level = SandeshLevel.INVALID
self._init_logger(module, logger_class=logger_class,
logger_config_file=logger_config_file)
self._logger.info('SANDESH: CONNECT TO COLLECTOR: %s',
connect_to_collector)
from sandesh_stats import SandeshMessageStatistics
self._msg_stats = SandeshMessageStatistics()
self._trace = trace.Trace()
self._sandesh_request_map = {}
self._alarm_ack_callback = alarm_ack_callback
self._uve_type_maps = SandeshUVETypeMaps(self._logger)
if sandesh_req_uve_pkg_list is None:
sandesh_req_uve_pkg_list = []
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
self._gev_httpd = None
if http_port != -1:
self._http_server = SandeshHttp(
self, module, http_port, sandesh_req_uve_pkg_list)
self._gev_httpd = gevent.spawn(self._http_server.start_http_server)
primary_collector = None
secondary_collector = None
if self._collectors is not None:
if len(self._collectors) > 0:
primary_collector = self._collectors[0]
if len(self._collectors) > 1:
secondary_collector = self._collectors[1]
if self._connect_to_collector:
self._client = SandeshClient(
self, primary_collector, secondary_collector,
discovery_client)
self._client.initiate()
def run(self, args):
broker = self.communicator()
adapter = broker.createObjectAdapter('FactoryAdapter')
publisher = self.get_topic(STATUS_TOPIC).getPublisher()
progress_publisher = Downloader.ProgressEventPrx.uncheckedCast(
publisher)
print("ProgressTopic created")
queue = WorkQueue(progress_publisher)
servant = SchedulerFactoryI(queue)
proxy = adapter.addWithUUID(servant)
sync_topic = self.get_topic(SYNC_TOPIC)
pub = sync_topic.subscribeAndGetPublisher({}, proxy)
servant.sync_publisher = Downloader.SyncEventPrx.uncheckedCast(pub)
print("SynTopic created")
print(proxy, flush=True)
adapter.activate()
queue.start()
self.shutdownOnInterrupt()
broker.waitForShutdown()
queue.destroy()
return 0
def run(self, args):
'''Crea los canales de eventos y el proxy que sera mostrado por teminal
para que el cliente pueda conectarse a el'''
adapter = self.communicator().createObjectAdapter("FactoryAdapter")
Downloader.SyncEventPrx.uncheckedCast(
self.get_topic(SYNC_TOPIC).getPublisher())
progress = Downloader.ProgressEventPrx.uncheckedCast(
self.get_topic(PROGRESS_TOPIC).getPublisher())
queue = WorkQueue(progress)
proxy = adapter.addWithUUID(SchedulerFactoryI(queue))
print(proxy, flush=True)
topic_mgr = self.get_topic(SYNC_TOPIC)
servant = SyncEventI()
subscriber = adapter.addWithUUID(servant)
qos = {}
topic_mgr.subscribeAndGetPublisher(qos, subscriber)
while self.communicator().isShutdown():
subscriber.requestSync()
time.sleep(10)
adapter.activate()
queue.start()
self.shutdownOnInterrupt()
self.communicator().waitForShutdown()
queue.destroy()
return 0
def run(self, argv):
topic_mgr = self.get_topic_manager() #proxy to topic
if not topic_mgr:
print(': invalid proxy')
return 2
topic_name = "ProgressTopic"
try:
topic = topic_mgr.retrieve(topic_name)
except IceStorm.NoSuchTopic:
topic = topic_mgr.create(topic_name)
publisher = topic.getPublisher();
progress_topic = Example.ProgressSubscriberPrx.unCheckedCast(publisher);
work_queue = WorkQueue(progress_top)
servant = DownloaderI(work_queue)
adapter = broker.createObjectAdapter("DownloaderAdapter")
printer(adapter.add(servant, broker.stringToIdentity("dowloader1")))
work_queue.start();
self.shutdownOnInterrupt()
broker.waitForShutdown()
work_queue.destroy()
return 0
def __init__(self, project, port, log_freq=600): # 600 seconds
"""Initialize the QMaster
Parameters
----------
project :
port : int
log_freq : int, optional
frequency to print info about the status of the work queue.
In units of seconds. Default is to print every 10 minutes.
"""
threading.Thread.__init__(self)
self.project = project
self.log_freq = log_freq # print time in seconds
self.wake_freq = 1 # seconds
self.wq = WorkQueue(port, name='MSMAccelerator', catalog=True, exclusive=False)
logger.info('WORK QUEUE MASTER LISTENING ON PORT: %d', self.wq.port)
logger.info('(Start a local worker with >> work_queue_worker -d all localhost %d & )', self.wq.port)
# method controls whether or not we need to bring back solvated_xtc as well
if self.project.method == 'explicit':
self.return_wet_xtc = True
elif self.project.method == 'implicit':
self.return_wet_xtc = False
else:
raise Exception("project.method must be 'explicit' or 'implicit'")
logger.info('Return wet xtc set to %s', self.return_wet_xtc)
# what does this specify algorithm do?
self.wq.specify_algorithm(WORK_QUEUE_SCHEDULE_FCFS)
# fast abort kills jobs that appear to be stragling (taking more than 1.5x average)
#self.wq.activate_fast_abort(1.5)
# setting the stop event signals for the thread to die
self._stop = threading.Event()
# the thread sets the event every time a job returns or there are no waiting jobs
# and it finished post processing. See the wait method
self._mainloop_wake_event_cause = None
self._mainloop_wake_event = threading.Event()
# start the thread
self.start()
def init_generator(self, module, source, node_type, instance_id,
collectors, client_context,
http_port, sandesh_req_uve_pkg_list=None,
connect_to_collector=True,
logger_class=None, logger_config_file=None,
host_ip='127.0.0.1', alarm_ack_callback=None,
config=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._sandesh_req_uve_pkg_list = sandesh_req_uve_pkg_list or []
self._host_ip = host_ip
self._client_context = client_context
self._connect_to_collector = connect_to_collector
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._init_logger(self._module, logger_class=logger_class,
logger_config_file=logger_config_file)
self._logger.info('SANDESH: CONNECT TO COLLECTOR: %s',
connect_to_collector)
from sandesh_stats import SandeshMessageStatistics
self._msg_stats = SandeshMessageStatistics()
self._trace = trace.Trace()
self._sandesh_request_map = {}
self._alarm_ack_callback = alarm_ack_callback
self._config = config or SandeshConfig.from_parser_arguments()
self._uve_type_maps = SandeshUVETypeMaps(self._logger)
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
self._sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in self._sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
if self._config.disable_object_logs is not None:
self.disable_sending_object_logs(self._config.disable_object_logs)
if self._config.system_logs_rate_limit is not None:
SandeshSystem.set_sandesh_send_rate_limit(
self._config.system_logs_rate_limit)
self._gev_httpd = None
if http_port != -1:
self.run_introspect_server(http_port)
if self._connect_to_collector:
self._client = SandeshClient(self)
self._client.initiate(collectors)
async def main():
r = redis.Redis()
wq = WorkQueue(r, tidy_interval=5, stale_time=3)
prod = Producer(work_queue=wq, delay=0.75)
worker = Worker("Good Worker", work_queue=wq, delay=1, fail_rate=0.2)
bad_worker = Worker("Bad Worker", work_queue=wq, delay=2.5, fail_rate=0.7)
try:
print('Start')
await wq.schedule_tidy_task()
await prod.start()
await worker.start()
await bad_worker.start()
await asyncio.sleep(61)
finally:
await wq.stop_tidy_task()
await prod.stop()
await worker.stop()
await bad_worker.stop()
def run(self, argv):
work_queue = WorkQueue()
servant = MathI(work_queue)
broker = self.communicator()
adapter = broker.createObjectAdapter("MathAdapter")
print adapter.add(servant, broker.stringToIdentity("math1"))
adapter.activate()
work_queue.start()
self.shutdownOnInterrupt()
broker.waitForShutdown()
work_queue.destroy()
return 0
def __init__(self, connection, logger, primary_collector,
secondary_collector):
def _update_connection_state(e, status):
from connection_info import ConnectionState
from gen_py.process_info.ttypes import ConnectionType
collector_addr = e.sm._active_collector
if collector_addr is None:
collector_addr = ''
ConnectionState.update(conn_type=ConnectionType.COLLECTOR,
name='',
status=status,
server_addrs=[collector_addr],
message='%s to %s on %s' %
(e.src, e.dst, e.event))
#end _update_connection_state
def _connection_state_up(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.UP)
#end _connection_state_up
def _connection_state_down(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.DOWN)
#end _connection_state_down
def _connection_state_init(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.INIT)
#end _connection_state_init
def _on_idle(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# Reset active and backup collector
self._active_collector = self._connection.primary_collector()
self._backup_collector = self._connection.secondary_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._disable != True:
e.sm._start_idle_hold_timer()
# update connection state
_connection_state_down(e)
#end _on_idle
def _on_disconnect(e):
# update connection state
_connection_state_down(e)
#end _on_disconnect
def _on_connect(e):
if e.sm._idle_hold_timer is not None:
e.sm._cancel_idle_hold_timer()
e.sm._connection.reset_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._active_collector is not None:
# update connection state
_connection_state_init(e)
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event=Event._EV_COLLECTOR_UNKNOWN))
#end _on_connect
def _on_connect_to_backup(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# clean up existing connection
e.sm._delete_session()
# try to connect to the backup collector, if known
if e.sm._backup_collector is not None:
e.sm._active_collector, e.sm._backup_collector = \
e.sm._backup_collector, e.sm._active_collector
# update connection state
_connection_state_init(e)
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(
Event(event=Event._EV_BACKUP_COLLECTOR_UNKNOWN))
#end _on_connect_to_backup
def _on_client_init(e):
e.sm._connects += 1
gevent.spawn(e.sm._session.read)
e.sm._connection.handle_initialized(e.sm._connects)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_init(e)
#end _on_client_init
def _on_established(e):
e.sm._cancel_connect_timer()
e.sm._connection.set_collector(e.sm_event.source)
e.sm._connection.handle_sandesh_ctrl_msg(e.sm_event.msg)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_up(e)
#end _on_established
# FSM - Fysom
self._fsm = Fysom({
'initial': {
'state': State._IDLE,
'event': Event._EV_START,
'defer': True
},
'events': [
# _IDLE
{
'name': Event._EV_IDLE_HOLD_TIMER_EXPIRED,
'src': State._IDLE,
'dst': State._CONNECT
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._IDLE,
'dst': State._CONNECT
},
{
'name': Event._EV_START,
'src': State._IDLE,
'dst': State._CONNECT
},
# _DISCONNECT
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._DISCONNECT,
'dst': State._CONNECT
},
# _CONNECT
{
'name': Event._EV_COLLECTOR_UNKNOWN,
'src': State._CONNECT,
'dst': State._DISCONNECT
},
{
'name': Event._EV_TCP_CONNECT_FAIL,
'src': State._CONNECT,
'dst': State._CONNECT_TO_BACKUP
},
{
'name': Event._EV_CONNECT_TIMER_EXPIRED,
'src': State._CONNECT,
'dst': State._CONNECT_TO_BACKUP
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._CONNECT,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CONNECTED,
'src': State._CONNECT,
'dst': State._CLIENT_INIT
},
# _CONNECT_TO_BACKUP
{
'name': Event._EV_BACKUP_COLLECTOR_UNKNOWN,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CONNECT_FAIL,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_CONNECT_TIMER_EXPIRED,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CONNECTED,
'src': State._CONNECT_TO_BACKUP,
'dst': State._CLIENT_INIT
},
# _CLIENT_INIT
{
'name': Event._EV_CONNECT_TIMER_EXPIRED,
'src': State._CLIENT_INIT,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CLOSE,
'src': State._CLIENT_INIT,
'dst': State._IDLE
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._CLIENT_INIT,
'dst': State._IDLE
},
{
'name': Event._EV_SANDESH_CTRL_MESSAGE_RECV,
'src': State._CLIENT_INIT,
'dst': State._ESTABLISHED
},
# _ESTABLISHED
{
'name': Event._EV_TCP_CLOSE,
'src': State._ESTABLISHED,
'dst': State._CONNECT_TO_BACKUP
},
{
'name': Event._EV_STOP,
'src': State._ESTABLISHED,
'dst': State._IDLE
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._ESTABLISHED,
'dst': State._CONNECT
}
],
'callbacks': {
'on' + State._IDLE: _on_idle,
'on' + State._CONNECT: _on_connect,
'on' + State._CONNECT_TO_BACKUP: _on_connect_to_backup,
'on' + State._CLIENT_INIT: _on_client_init,
'on' + State._ESTABLISHED: _on_established,
}
})
self._connection = connection
self._session = None
self._connects = 0
self._disable = False
self._idle_hold_timer = None
self._connect_timer = None
self._active_collector = primary_collector
self._backup_collector = secondary_collector
self._logger = logger
self._event_queue = WorkQueue(self._dequeue_event,
self._is_ready_to_dequeue_event)
class SandeshStateMachine(object):
_IDLE_HOLD_TIME = 5 # in seconds
_CONNECT_TIME = 30 # in seconds
def __init__(self, connection, logger, primary_collector,
secondary_collector):
def _update_connection_state(e, status):
from connection_info import ConnectionState
from gen_py.process_info.ttypes import ConnectionType
collector_addr = e.sm._active_collector
if collector_addr is None:
collector_addr = ''
ConnectionState.update(conn_type=ConnectionType.COLLECTOR,
name='',
status=status,
server_addrs=[collector_addr],
message='%s to %s on %s' %
(e.src, e.dst, e.event))
#end _update_connection_state
def _connection_state_up(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.UP)
#end _connection_state_up
def _connection_state_down(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.DOWN)
#end _connection_state_down
def _connection_state_init(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.INIT)
#end _connection_state_init
def _on_idle(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# Reset active and backup collector
self._active_collector = self._connection.primary_collector()
self._backup_collector = self._connection.secondary_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._disable != True:
e.sm._start_idle_hold_timer()
# update connection state
_connection_state_down(e)
#end _on_idle
def _on_disconnect(e):
# update connection state
_connection_state_down(e)
#end _on_disconnect
def _on_connect(e):
if e.sm._idle_hold_timer is not None:
e.sm._cancel_idle_hold_timer()
e.sm._connection.reset_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._active_collector is not None:
# update connection state
_connection_state_init(e)
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event=Event._EV_COLLECTOR_UNKNOWN))
#end _on_connect
def _on_connect_to_backup(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# clean up existing connection
e.sm._delete_session()
# try to connect to the backup collector, if known
if e.sm._backup_collector is not None:
e.sm._active_collector, e.sm._backup_collector = \
e.sm._backup_collector, e.sm._active_collector
# update connection state
_connection_state_init(e)
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(
Event(event=Event._EV_BACKUP_COLLECTOR_UNKNOWN))
#end _on_connect_to_backup
def _on_client_init(e):
e.sm._connects += 1
gevent.spawn(e.sm._session.read)
e.sm._connection.handle_initialized(e.sm._connects)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_init(e)
#end _on_client_init
def _on_established(e):
e.sm._cancel_connect_timer()
e.sm._connection.set_collector(e.sm_event.source)
e.sm._connection.handle_sandesh_ctrl_msg(e.sm_event.msg)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_up(e)
#end _on_established
# FSM - Fysom
self._fsm = Fysom({
'initial': {
'state': State._IDLE,
'event': Event._EV_START,
'defer': True
},
'events': [
# _IDLE
{
'name': Event._EV_IDLE_HOLD_TIMER_EXPIRED,
'src': State._IDLE,
'dst': State._CONNECT
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._IDLE,
'dst': State._CONNECT
},
{
'name': Event._EV_START,
'src': State._IDLE,
'dst': State._CONNECT
},
# _DISCONNECT
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._DISCONNECT,
'dst': State._CONNECT
},
# _CONNECT
{
'name': Event._EV_COLLECTOR_UNKNOWN,
'src': State._CONNECT,
'dst': State._DISCONNECT
},
{
'name': Event._EV_TCP_CONNECT_FAIL,
'src': State._CONNECT,
'dst': State._CONNECT_TO_BACKUP
},
{
'name': Event._EV_CONNECT_TIMER_EXPIRED,
'src': State._CONNECT,
'dst': State._CONNECT_TO_BACKUP
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._CONNECT,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CONNECTED,
'src': State._CONNECT,
'dst': State._CLIENT_INIT
},
# _CONNECT_TO_BACKUP
{
'name': Event._EV_BACKUP_COLLECTOR_UNKNOWN,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CONNECT_FAIL,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_CONNECT_TIMER_EXPIRED,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._CONNECT_TO_BACKUP,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CONNECTED,
'src': State._CONNECT_TO_BACKUP,
'dst': State._CLIENT_INIT
},
# _CLIENT_INIT
{
'name': Event._EV_CONNECT_TIMER_EXPIRED,
'src': State._CLIENT_INIT,
'dst': State._IDLE
},
{
'name': Event._EV_TCP_CLOSE,
'src': State._CLIENT_INIT,
'dst': State._IDLE
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._CLIENT_INIT,
'dst': State._IDLE
},
{
'name': Event._EV_SANDESH_CTRL_MESSAGE_RECV,
'src': State._CLIENT_INIT,
'dst': State._ESTABLISHED
},
# _ESTABLISHED
{
'name': Event._EV_TCP_CLOSE,
'src': State._ESTABLISHED,
'dst': State._CONNECT_TO_BACKUP
},
{
'name': Event._EV_STOP,
'src': State._ESTABLISHED,
'dst': State._IDLE
},
{
'name': Event._EV_COLLECTOR_CHANGE,
'src': State._ESTABLISHED,
'dst': State._CONNECT
}
],
'callbacks': {
'on' + State._IDLE: _on_idle,
'on' + State._CONNECT: _on_connect,
'on' + State._CONNECT_TO_BACKUP: _on_connect_to_backup,
'on' + State._CLIENT_INIT: _on_client_init,
'on' + State._ESTABLISHED: _on_established,
}
})
self._connection = connection
self._session = None
self._connects = 0
self._disable = False
self._idle_hold_timer = None
self._connect_timer = None
self._active_collector = primary_collector
self._backup_collector = secondary_collector
self._logger = logger
self._event_queue = WorkQueue(self._dequeue_event,
self._is_ready_to_dequeue_event)
#end __init__
# Public functions
def initialize(self):
self.enqueue_event(Event(event=Event._EV_START))
#end initialize
def session(self):
return self._session
#end session
def state(self):
return self._fsm.current
#end state
def shutdown(self):
self._disable = True
self.enqueue_event(Event(event=Event._EV_STOP))
#end shutdown
def set_admin_state(self, down):
if down == True:
self._disable = True
self.enqueue_event(Event(event=Event._EV_STOP))
else:
self._disable = False
self.enqueue_event(Event(event=Event._EV_START))
#end set_admin_state
def connect_count(self):
return self._connects
#end connect_count
def active_collector(self):
return self._active_collector
#end active_collector
def backup_collector(self):
return self._backup_collector
#end backup_collector
def enqueue_event(self, event):
self._event_queue.enqueue(event)
#end enqueue_event
def on_session_event(self, session, event):
if session is not self._session:
self._logger.error(
"Ignore session event [%d] received for old session" % (event))
return
if SandeshSession.SESSION_ESTABLISHED == event:
self._logger.info("Session Event: TCP Connected")
self.enqueue_event(
Event(event=Event._EV_TCP_CONNECTED, session=session))
elif SandeshSession.SESSION_ERROR == event:
self._logger.error("Session Event: TCP Connect Fail")
self.enqueue_event(
Event(event=Event._EV_TCP_CONNECT_FAIL, session=session))
elif SandeshSession.SESSION_CLOSE == event:
self._logger.error("Session Event: TCP Connection Closed")
self.enqueue_event(
Event(event=Event._EV_TCP_CLOSE, session=session))
else:
self._logger.error("Received unknown session event [%d]" % (event))
#end on_session_event
def on_sandesh_ctrl_msg_receive(self, session, sandesh_ctrl, collector):
if sandesh_ctrl.success == True:
self.enqueue_event(
Event(event=Event._EV_SANDESH_CTRL_MESSAGE_RECV,
session=session,
msg=sandesh_ctrl,
source=collector))
else:
# Negotiation with the Collector failed, reset the
# connection and retry after sometime.
self._logger.error("Negotiation with the Collector %s failed." %
(collector))
self._session.close()
#end on_sandesh_ctrl_msg_receive
def on_sandesh_uve_msg_send(self, sandesh_uve):
self.enqueue_event(
Event(event=Event._EV_SANDESH_UVE_SEND, msg=sandesh_uve))
#end on_sandesh_uve_msg_send
# Private functions
def _create_session(self):
assert self._session is None
col_info = self._active_collector.split(':')
collector = (col_info[0], int(col_info[1]))
self._session = SandeshSession(self._connection.sandesh_instance(),
collector, self.on_session_event,
self._connection._receive_sandesh_msg)
#end _create_session
def _delete_session(self):
if self._session:
self._session.close()
self._session = None
self._connection.reset_collector()
#end _delete_session
def _start_idle_hold_timer(self):
if self._idle_hold_timer is None:
if self._IDLE_HOLD_TIME:
self._idle_hold_timer = gevent.spawn_later(
self._IDLE_HOLD_TIME, self._idle_hold_timer_expiry_handler)
else:
self.enqueue_event(
Event(event=Event._EV_IDLE_HOLD_TIMER_EXPIRED))
#end _start_idle_hold_timer
def _cancel_idle_hold_timer(self):
if self._idle_hold_timer is not None:
gevent.kill(self._idle_hold_timer)
self._idle_hold_timer = None
#end _cancel_idle_hold_timer
def _idle_hold_timer_expiry_handler(self):
self._idle_hold_timer = None
self.enqueue_event(Event(event=Event._EV_IDLE_HOLD_TIMER_EXPIRED))
#end _idle_hold_timer_expiry_handler
def _start_connect_timer(self):
if self._connect_timer is None:
self._connect_timer = gevent.spawn_later(
self._CONNECT_TIME, self._connect_timer_expiry_handler,
self._session)
#end _start_connect_timer
def _cancel_connect_timer(self):
if self._connect_timer is not None:
gevent.kill(self._connect_timer)
self._connect_timer = None
#end _cancel_connect_timer
def _connect_timer_expiry_handler(self, session):
self._connect_timer = None
self.enqueue_event(
Event(event=Event._EV_CONNECT_TIMER_EXPIRED, session=session))
#end _connect_timer_expiry_handler
def _is_ready_to_dequeue_event(self):
return True
#end _is_ready_to_dequeue_event
def _log_event(self, event):
if self._fsm.current == State._ESTABLISHED and \
event.event == Event._EV_SANDESH_UVE_SEND:
return False
return True
#end _log_event
def _dequeue_event(self, event):
if self._log_event(event):
self._logger.info("Processing event[%s] in state[%s]" \
% (event.event, self._fsm.current))
if event.session is not None and event.session is not self._session:
self._logger.info("Ignore event [%s] received for old session" \
% (event.event))
return
if event.event == Event._EV_COLLECTOR_CHANGE:
old_active_collector = self._active_collector
self._active_collector = event.primary_collector
self._backup_collector = event.secondary_collector
if old_active_collector == self._active_collector:
self._logger.info("No change in active collector. Ignore event [%s]" \
% (event.event))
return
if event.event == Event._EV_SANDESH_UVE_SEND:
if self._fsm.current == State._ESTABLISHED or self._fsm.current == State._CLIENT_INIT:
self._connection.handle_sandesh_uve_msg(event.msg)
else:
self._connection.sandesh_instance().msg_stats(
).update_tx_stats(event.msg.__class__.__name__, 0,
SandeshTxDropReason.WrongClientSMState)
self._logger.info("Discarding event[%s] in state[%s]" \
% (event.event, self._fsm.current))
elif event.event == Event._EV_SANDESH_CTRL_MESSAGE_RECV and \
self._fsm.current == State._ESTABLISHED:
self._connection.handle_sandesh_ctrl_msg(event.msg)
elif self._fsm.cannot(event.event) is True:
self._logger.info("Unconsumed event[%s] in state[%s]" \
% (event.event, self._fsm.current))
else:
prev_state = self.state()
getattr(self._fsm, event.event)(sm=self, sm_event=event)
# Log state transition
self._logger.info("Sandesh Client: Event[%s] => State[%s] -> State[%s]" \
% (event.event, prev_state, self.state()))
class Sandesh(object):
_DEFAULT_LOG_FILE = SandeshLogger._DEFAULT_LOG_FILE
_DEFAULT_SYSLOG_FACILITY = SandeshLogger._DEFAULT_SYSLOG_FACILITY
class SandeshRole:
INVALID = 0
GENERATOR = 1
COLLECTOR = 2
# end class SandeshRole
def __init__(self):
self._context = ''
self._scope = ''
self._module = ''
self._source = ''
self._node_type = ''
self._instance_id = ''
self._timestamp = 0
self._versionsig = 0
self._type = 0
self._hints = 0
self._client_context = ''
self._client = None
self._role = self.SandeshRole.INVALID
self._logger = None
self._level = SandeshLevel.INVALID
self._category = ''
self._send_queue_enabled = True
self._http_server = None
self._connect_to_collector = True
# end __init__
# Public functions
def init_generator(self, module, source, node_type, instance_id,
collectors, client_context,
http_port, sandesh_req_uve_pkg_list=None,
discovery_client=None, connect_to_collector=True):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._client_context = client_context
self._collectors = collectors
self._connect_to_collector = connect_to_collector
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._init_logger(source + ':' + module + ':' + node_type + ':' \
+ instance_id)
self._logger.info('SANDESH: CONNECT TO COLLECTOR: %s',
connect_to_collector)
self._stats = SandeshStats()
self._trace = trace.Trace()
self._sandesh_request_dict = {}
self._uve_type_maps = SandeshUVETypeMaps(self._logger)
if sandesh_req_uve_pkg_list is None:
sandesh_req_uve_pkg_list = []
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
self._gev_httpd = None
if http_port != -1:
self._http_server = SandeshHttp(
self, module, http_port, sandesh_req_uve_pkg_list)
self._gev_httpd = gevent.spawn(
self._http_server.start_http_server)
primary_collector = None
secondary_collector = None
if self._collectors is not None:
if len(self._collectors) > 0:
primary_collector = self._collectors[0]
if len(self._collectors) > 1:
secondary_collector = self._collectors[1]
if self._connect_to_collector:
self._client = SandeshClient(
self, primary_collector, secondary_collector,
discovery_client)
self._client.initiate()
# end init_generator
def uninit(self):
self.kill_httpd()
def kill_httpd(self):
if self._gev_httpd:
try:
self._gev_httpd.kill()
except Exception as e:
self._logger.debug(str(e))
def record_port(self, name, port):
pipe_name = '/tmp/%s.%d.%s_port' % (self._module, os.getppid(), name)
try:
pipeout = os.open(pipe_name, os.O_WRONLY)
except:
self._logger.error('Cannot write %s_port %d to %s' % (name, port, pipe_name))
else:
self._logger.error('Writing %s_port %d to %s' % (name, port, pipe_name))
os.write(pipeout, '%d\n' % port)
os.close(pipeout)
def logger(self):
return self._logger
# end logger
def sandesh_logger(self):
return self._sandesh_logger
# end sandesh_logger
def set_logging_params(self, enable_local_log=False, category='',
level=SandeshLevel.SYS_INFO,
file=SandeshLogger._DEFAULT_LOG_FILE,
enable_syslog=False,
syslog_facility=_DEFAULT_SYSLOG_FACILITY):
self._sandesh_logger.set_logging_params(
enable_local_log, category, level, file,
enable_syslog, syslog_facility)
# end set_logging_params
def set_local_logging(self, enable_local_log):
self._sandesh_logger.set_local_logging(enable_local_log)
# end set_local_logging
def set_logging_level(self, level):
self._sandesh_logger.set_logging_level(level)
# end set_logging_level
def set_logging_category(self, category):
self._sandesh_logger.set_logging_category(category)
# end set_logging_category
def set_logging_file(self, file):
self._sandesh_logger.set_logging_file(file)
# end set_logging_file
def is_send_queue_enabled(self):
return self._send_queue_enabled
# end is_send_queue_enabled
def is_connect_to_collector_enabled(self):
return self._connect_to_collector
# end is_connect_to_collector_enabled
def set_send_queue(self, enable):
if self._send_queue_enabled != enable:
self._logger.info("SANDESH: CLIENT: SEND QUEUE: %s -> %s",
self._send_queue_enabled, enable)
self._send_queue_enabled = enable
if enable:
connection = self._client.connection()
if connection and connection.session():
connection.session().send_queue().may_be_start_runner()
# end set_send_queue
def init_collector(self):
pass
# end init_collector
def stats(self):
return self._stats
# end stats
@classmethod
def next_seqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 1
else:
cls._lseqnum += 1
return cls._lseqnum
# end next_seqnum
@classmethod
def lseqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 0
return cls._lseqnum
# end lseqnum
def module(self):
return self._module
# end module
def source_id(self):
return self._source
# end source_id
def node_type(self):
return self._node_type
#end node_type
def instance_id(self):
return self._instance_id
#end instance_id
def scope(self):
return self._scope
# end scope
def context(self):
return self._context
# end context
def seqnum(self):
return self._seqnum
# end seqnum
def timestamp(self):
return self._timestamp
# end timestamp
def versionsig(self):
return self._versionsig
# end versionsig
def type(self):
return self._type
# end type
def hints(self):
return self._hints
# end hints
def client(self):
return self._client
# end client
def level(self):
return self._level
# end level
def category(self):
return self._category
# end category
def validate(self):
return
# end validate
def is_local_logging_enabled(self):
return self._sandesh_logger.is_local_logging_enabled()
# end is_local_logging_enabled
def logging_level(self):
return self._sandesh_logger.logging_level()
# end logging_level
def logging_category(self):
return self._sandesh_logger.logging_category()
# end logging_category
def is_syslog_logging_enabled(self):
return self._sandesh_logger.is_syslog_logging_enabled()
#end is_syslog_logging_enabled
def logging_syslog_facility(self):
return self._sandesh_logger.logging_syslog_facility()
#end logging_syslog_facility
def is_unit_test(self):
return self._role == self.SandeshRole.INVALID
# end is_unit_test
def handle_test(self, sandesh_init):
if sandesh_init.is_unit_test() or self._is_level_ut():
if self._is_logging_allowed(sandesh_init):
sandesh_init._logger.debug(self.log())
return True
return False
def is_logging_allowed(self, sandesh_init):
if not sandesh_init.is_local_logging_enabled():
return False
logging_level = sandesh_init.logging_level()
level_allowed = logging_level >= self._level
logging_category = sandesh_init.logging_category()
if logging_category is None or len(logging_category) == 0:
category_allowed = True
else:
category_allowed = logging_category == self._category
return level_allowed and category_allowed
# end is_logging_allowed
def enqueue_sandesh_request(self, sandesh):
self._rcv_queue.enqueue(sandesh)
# end enqueue_sandesh_request
def send_sandesh(self, tx_sandesh):
if self._client:
ret = self._client.send_sandesh(tx_sandesh)
else:
if self._connect_to_collector:
self._logger.error('SANDESH: No Client: %s', tx_sandesh.log())
else:
self._logger.log(
SandeshLogger.get_py_logger_level(tx_sandesh.level()),
tx_sandesh.log())
# end send_sandesh
def send_generator_info(self):
from gen_py.sandesh_uve.ttypes import SandeshClientInfo, \
ModuleClientState, SandeshModuleClientTrace
client_info = SandeshClientInfo()
try:
client_start_time = self._start_time
except:
self._start_time = UTCTimestampUsec()
finally:
client_info.start_time = self._start_time
client_info.pid = os.getpid()
if self._http_server is not None:
client_info.http_port = self._http_server.get_port()
client_info.collector_name = self._client.connection().collector()
client_info.status = self._client.connection().state()
client_info.successful_connections = \
self._client.connection().statemachine().connect_count()
client_info.primary = self._client.connection().primary_collector()
if client_info.primary is None:
client_info.primary = ''
client_info.secondary = \
self._client.connection().secondary_collector()
if client_info.secondary is None:
client_info.secondary = ''
module_state = ModuleClientState(name=self._source + ':' +
self._node_type + ':' +
self._module + ':' +
self._instance_id,
client_info=client_info)
generator_info = SandeshModuleClientTrace(
data=module_state, sandesh=self)
generator_info.send(sandesh=self)
# end send_generator_info
def get_sandesh_request_object(self, request):
try:
req_module = self._sandesh_request_dict[request]
except KeyError:
self._logger.error('Invalid Sandesh Request "%s"' % (request))
return None
else:
if req_module:
try:
imp_module = importlib.import_module(req_module)
except ImportError:
self._logger.error(
'Failed to import Module "%s"' % (req_module))
else:
try:
sandesh_request = getattr(imp_module, request)()
return sandesh_request
except AttributeError:
self._logger.error(
'Failed to create Sandesh Request "%s"' %
(request))
return None
else:
self._logger.error(
'Sandesh Request "%s" not implemented' % (request))
return None
# end get_sandesh_request_object
def trace_enable(self):
self._trace.TraceOn()
# end trace_enable
def trace_disable(self):
self._trace.TraceOff()
# end trace_disable
def is_trace_enabled(self):
return self._trace.IsTraceOn()
# end is_trace_enabled
def trace_buffer_create(self, name, size, enable=True):
self._trace.TraceBufAdd(name, size, enable)
# end trace_buffer_create
def trace_buffer_delete(self, name):
self._trace.TraceBufDelete(name)
# end trace_buffer_delete
def trace_buffer_enable(self, name):
self._trace.TraceBufOn(name)
# end trace_buffer_enable
def trace_buffer_disable(self, name):
self._trace.TraceBufOff(name)
# end trace_buffer_disable
def is_trace_buffer_enabled(self, name):
return self._trace.IsTraceBufOn(name)
# end is_trace_buffer_enabled
def trace_buffer_list_get(self):
return self._trace.TraceBufListGet()
# end trace_buffer_list_get
def trace_buffer_size_get(self, name):
return self._trace.TraceBufSizeGet(name)
# end trace_buffer_size_get
def trace_buffer_read(self, name, read_context, count, read_cb):
self._trace.TraceRead(name, read_context, count, read_cb)
# end trace_buffer_read
def trace_buffer_read_done(self, name, context):
self._trace.TraceReadDone(name, context)
# end trace_buffer_read_done
# API to send the trace buffer to the Collector.
# If trace count is not specified/or zero, then the entire trace buffer
# is sent to the Collector.
# [Note] No duplicate trace message sent to the Collector. i.e., If there
# is no trace message added between two consequent calls to this API, then
# no trace message is sent to the Collector.
def send_sandesh_trace_buffer(self, trace_buf, count=0):
trace_req_runner = SandeshTraceRequestRunner(sandesh=self,
request_buffer_name=
trace_buf,
request_context='',
read_context='Collector',
request_count=count)
trace_req_runner.Run()
# end send_sandesh_trace_buffer
# Private functions
def _is_level_ut(self):
return self._level >= SandeshLevel.UT_START and \
self._level <= SandeshLevel.UT_END
# end _is_level_ut
def _create_task(self):
return gevent.spawn(self._runner.run_for_ever)
# end _create_task
def _process_rx_sandesh(self, rx_sandesh):
handle_request_fn = getattr(rx_sandesh, "handle_request", None)
if callable(handle_request_fn):
handle_request_fn(rx_sandesh)
else:
self._logger.error('Sandesh Request "%s" not implemented' %
(rx_sandesh.__class__.__name__))
# end _process_rx_sandesh
def _create_sandesh_request_and_uve_lists(self, package):
try:
imp_pkg = __import__(package)
except ImportError:
self._logger.error('Failed to import package "%s"' % (package))
else:
try:
pkg_path = imp_pkg.__path__
except AttributeError:
self._logger.error(
'Failed to get package [%s] path' % (package))
return
for importer, mod, ispkg in \
pkgutil.walk_packages(path=pkg_path,
prefix=imp_pkg.__name__ + '.'):
if not ispkg:
module = mod.rsplit('.', 1)[-1]
if 'ttypes' == module:
self._logger.debug(
'Add Sandesh requests in module "%s"' % (mod))
self._add_sandesh_request(mod)
self._logger.debug(
'Add Sandesh UVEs in module "%s"' % (mod))
self._add_sandesh_uve(mod)
self._logger.debug(
'Add Sandesh Alarms in module "%s"' %(mod))
self._add_sandesh_alarm(mod)
# end _create_sandesh_request_and_uve_lists
def _add_sandesh_request(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
try:
sandesh_req_list = getattr(imp_module, '_SANDESH_REQUEST_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh request list' % (mod))
else:
# Add sandesh requests to the dictionary.
for req in sandesh_req_list:
self._sandesh_request_dict[req] = mod
# end _add_sandesh_request
def _get_sandesh_uve_list(self, imp_module):
try:
sandesh_uve_list = getattr(imp_module, '_SANDESH_UVE_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh UVE list' %
(imp_module.__name__))
return None
else:
return sandesh_uve_list
# end _get_sandesh_uve_list
def _get_sandesh_uve_data_list(self, imp_module):
try:
sandesh_uve_data_list = getattr(imp_module, '_SANDESH_UVE_DATA_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh UVE data list' %
(imp_module.__name__))
return None
else:
return sandesh_uve_data_list
# end _get_sandesh_uve_data_list
def _add_sandesh_uve(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
sandesh_uve_list = self._get_sandesh_uve_list(imp_module)
sandesh_uve_data_list = self._get_sandesh_uve_data_list(imp_module)
if sandesh_uve_list is None or sandesh_uve_data_list is None:
return
if len(sandesh_uve_list) != len(sandesh_uve_data_list):
self._logger.error(
'"%s" module sandesh UVE and UVE data list do not match' %
(mod))
return
sandesh_uve_info_list = zip(sandesh_uve_list, sandesh_uve_data_list)
# Register sandesh UVEs
for uve_type_name, uve_data_type_name in sandesh_uve_info_list:
SandeshUVEPerTypeMap(self, SandeshType.UVE,
uve_type_name, uve_data_type_name, mod)
# end _add_sandesh_uve
def _get_sandesh_alarm_list(self, imp_module):
try:
sandesh_alarm_list = getattr(imp_module, '_SANDESH_ALARM_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh Alarm list' %
(imp_module.__name__))
return None
else:
return sandesh_alarm_list
# end _get_sandesh_alarm_list
def _get_sandesh_alarm_data_list(self, imp_module):
try:
sandesh_alarm_data_list = getattr(imp_module, '_SANDESH_ALARM_DATA_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh Alarm data list' %
(imp_module.__name__))
return None
else:
return sandesh_alarm_data_list
# end _get_sandesh_alarm_data_list
def _add_sandesh_alarm(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
sandesh_alarm_list = self._get_sandesh_alarm_list(imp_module)
sandesh_alarm_data_list = self._get_sandesh_alarm_data_list(imp_module)
if sandesh_alarm_list is None or sandesh_alarm_data_list is None:
return
if len(sandesh_alarm_list) != len(sandesh_alarm_data_list):
self._logger.error(
'"%s" module sandesh Alarm and Alarm data list do not match' %
(mod))
return
sandesh_alarm_info_list = zip(sandesh_alarm_list,
sandesh_alarm_data_list)
# Register sandesh Alarms
for alarm_type_name, alarm_data_type_name in sandesh_alarm_info_list:
SandeshUVEPerTypeMap(self, SandeshType.ALARM, alarm_type_name,
alarm_data_type_name, mod)
# end _add_sandesh_alarm
def _init_logger(self, generator):
if not generator:
generator = 'sandesh'
self._sandesh_logger = SandeshLogger(generator)
self._logger = self._sandesh_logger.logger()
class SandeshSession(TcpSession):
_KEEPALIVE_IDLE_TIME = 15 # in secs
_KEEPALIVE_INTERVAL = 3 # in secs
_KEEPALIVE_PROBES = 5
_TCP_USER_TIMEOUT_OPT = 18
_TCP_USER_TIMEOUT_VAL = 30000 # ms
def __init__(self, sandesh_instance, server, event_handler,
sandesh_msg_handler):
self._sandesh_instance = sandesh_instance
self._logger = sandesh_instance._logger
self._event_handler = event_handler
self._reader = SandeshReader(self, sandesh_msg_handler)
self._writer = SandeshWriter(self)
self._send_queue = WorkQueue(self._send_sandesh,
self._is_ready_to_send_sandesh)
TcpSession.__init__(self, server)
# end __init__
# Public functions
def sandesh_instance(self):
return self._sandesh_instance
# end sandesh_instance
def is_send_queue_empty(self):
return self._send_queue.is_queue_empty()
# end is_send_queue_empty
def is_connected(self):
return self._connected
# end is_connected
def enqueue_sandesh(self, sandesh):
self._send_queue.enqueue(sandesh)
# end enqueue_sandesh
def send_queue(self):
return self._send_queue
# end send_queue
# Overloaded functions from TcpSession
def connect(self):
TcpSession.connect(self, timeout=5)
# end connect
def _on_read(self, buf):
if self._reader.read_msg(buf) < 0:
self._logger.error('SandeshReader Error. Close Collector session')
self.close()
# end _on_read
def _handle_event(self, event):
self._event_handler(self, event)
# end _handle_event
def _set_socket_options(self):
self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
if hasattr(socket, 'TCP_KEEPIDLE'):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE,
self._KEEPALIVE_IDLE_TIME)
if hasattr(socket, 'TCP_KEEPALIVE'):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPALIVE,
self._KEEPALIVE_IDLE_TIME)
if hasattr(socket, 'TCP_KEEPINTVL'):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL,
self._KEEPALIVE_INTERVAL)
if hasattr(socket, 'TCP_KEEPCNT'):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT,
self._KEEPALIVE_PROBES)
try:
self._socket.setsockopt(socket.IPPROTO_TCP,
self._TCP_USER_TIMEOUT_OPT,
self._TCP_USER_TIMEOUT_VAL)
except:
self._logger.error(
'setsockopt failed: option %d, value %d' %
(self._TCP_USER_TIMEOUT_OPT, self._TCP_USER_TIMEOUT_VAL))
# end _set_socket_options
# Private functions
def _send_sandesh(self, sandesh):
if self._send_queue.is_queue_empty():
more = False
else:
more = True
if not self._connected:
if self._sandesh_instance.is_logging_dropped_allowed(sandesh):
self._logger.error("SANDESH: %s: %s" %
("Not connected", sandesh.log()))
return
if sandesh.is_logging_allowed(self._sandesh_instance):
self._logger.log(
SandeshLogger.get_py_logger_level(sandesh.level()),
sandesh.log())
self._writer.send_msg(sandesh, more)
# end _send_sandesh
def _is_ready_to_send_sandesh(self):
return self._sandesh_instance.is_send_queue_enabled()
class SandeshSession(TcpSession):
_KEEPALIVE_IDLE_TIME = 15 # in secs
_KEEPALIVE_INTERVAL = 3 # in secs
_KEEPALIVE_PROBES = 5
_TCP_USER_TIMEOUT_OPT = 18
_TCP_USER_TIMEOUT_VAL = 30000 # ms
def __init__(self, sandesh_instance, server, event_handler, sandesh_msg_handler):
self._sandesh_instance = sandesh_instance
self._logger = sandesh_instance._logger
self._event_handler = event_handler
self._reader = SandeshReader(self, sandesh_msg_handler)
self._writer = SandeshWriter(self)
self._send_queue = WorkQueue(self._send_sandesh, self._is_ready_to_send_sandesh)
TcpSession.__init__(self, server)
# end __init__
# Public functions
def sandesh_instance(self):
return self._sandesh_instance
# end sandesh_instance
def is_send_queue_empty(self):
return self._send_queue.is_queue_empty()
# end is_send_queue_empty
def is_connected(self):
return self._connected
# end is_connected
def enqueue_sandesh(self, sandesh):
self._send_queue.enqueue(sandesh)
# end enqueue_sandesh
def send_queue(self):
return self._send_queue
# end send_queue
# Overloaded functions from TcpSession
def connect(self):
TcpSession.connect(self, timeout=5)
# end connect
def _on_read(self, buf):
if self._reader.read_msg(buf) < 0:
self._logger.error("SandeshReader Error. Close Collector session")
self.close()
# end _on_read
def _handle_event(self, event):
self._event_handler(self, event)
# end _handle_event
def _set_socket_options(self):
self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
if hasattr(socket, "TCP_KEEPIDLE"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, self._KEEPALIVE_IDLE_TIME)
if hasattr(socket, "TCP_KEEPALIVE"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPALIVE, self._KEEPALIVE_IDLE_TIME)
if hasattr(socket, "TCP_KEEPINTVL"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, self._KEEPALIVE_INTERVAL)
if hasattr(socket, "TCP_KEEPCNT"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, self._KEEPALIVE_PROBES)
try:
self._socket.setsockopt(socket.IPPROTO_TCP, self._TCP_USER_TIMEOUT_OPT, self._TCP_USER_TIMEOUT_VAL)
except:
self._logger.error(
"setsockopt failed: option %d, value %d" % (self._TCP_USER_TIMEOUT_OPT, self._TCP_USER_TIMEOUT_VAL)
)
# end _set_socket_options
# Private functions
def _send_sandesh(self, sandesh):
if self._send_queue.is_queue_empty():
more = False
else:
more = True
if not self._connected:
if self._sandesh_instance.is_logging_dropped_allowed(sandesh):
self._logger.error("SANDESH: %s: %s" % ("Not connected", sandesh.log()))
self._sandesh_instance.msg_stats().update_tx_stats(
sandesh.__class__.__name__, 0, SandeshTxDropReason.SessionNotConnected
)
return
if sandesh.is_logging_allowed(self._sandesh_instance):
self._logger.log(SandeshLogger.get_py_logger_level(sandesh.level()), sandesh.log())
self._writer.send_msg(sandesh, more)
# end _send_sandesh
def _is_ready_to_send_sandesh(self):
return self._sandesh_instance.is_send_queue_enabled()
class Sandesh(object):
_DEFAULT_LOG_FILE = sand_logger.SandeshLogger._DEFAULT_LOG_FILE
_DEFAULT_SYSLOG_FACILITY = (
sand_logger.SandeshLogger._DEFAULT_SYSLOG_FACILITY)
class SandeshRole:
INVALID = 0
GENERATOR = 1
COLLECTOR = 2
# end class SandeshRole
def __init__(self):
self._context = ''
self._scope = ''
self._module = ''
self._source = ''
self._node_type = ''
self._instance_id = ''
self._timestamp = 0
self._versionsig = 0
self._type = 0
self._hints = 0
self._client_context = ''
self._client = None
self._role = self.SandeshRole.INVALID
self._logger = None
self._level = SandeshLevel.INVALID
self._category = ''
self._send_queue_enabled = True
self._http_server = None
self._connect_to_collector = True
self._disable_sending_object_logs = False
self._disable_sending_all_messages = False
# end __init__
# Public functions
def init_generator(self,
module,
source,
node_type,
instance_id,
collectors,
client_context,
http_port,
sandesh_req_uve_pkg_list=None,
connect_to_collector=True,
logger_class=None,
logger_config_file=None,
host_ip='127.0.0.1',
alarm_ack_callback=None,
config=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._sandesh_req_uve_pkg_list = sandesh_req_uve_pkg_list or []
self._host_ip = host_ip
self._client_context = client_context
self._connect_to_collector = connect_to_collector
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._send_level = SandeshLevel.INVALID
self._init_logger(self._module,
logger_class=logger_class,
logger_config_file=logger_config_file)
self._logger.info('SANDESH: CONNECT TO COLLECTOR: %s',
connect_to_collector)
from sandesh_stats import SandeshMessageStatistics
self._msg_stats = SandeshMessageStatistics()
self._trace = trace.Trace()
self._sandesh_request_map = {}
self._alarm_ack_callback = alarm_ack_callback
self._config = config or SandeshConfig.from_parser_arguments()
self._uve_type_maps = SandeshUVETypeMaps(self._logger)
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
self._sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in self._sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
if self._config.disable_object_logs is not None:
self.disable_sending_object_logs(self._config.disable_object_logs)
if self._config.system_logs_rate_limit is not None:
SandeshSystem.set_sandesh_send_rate_limit(
self._config.system_logs_rate_limit)
self._gev_httpd = None
if http_port != -1:
self.run_introspect_server(http_port)
if self._connect_to_collector:
self._client = SandeshClient(self)
self._client.initiate(collectors)
# end init_generator
def run_introspect_server(self, http_port):
self._http_server = SandeshHttp(self, self._module, http_port,
self._sandesh_req_uve_pkg_list,
self._config)
self._gev_httpd = gevent.spawn(self._http_server.start_http_server)
# end run_introspect_server
def uninit(self):
self.kill_httpd()
def kill_httpd(self):
if self._gev_httpd:
try:
self._http_server.stop_http_server()
self._http_server = None
gevent.sleep(0)
self._gev_httpd.kill()
except Exception as e:
self._logger.debug(str(e))
def record_port(self, name, port):
pipe_name = '/tmp/%s.%d.%s_port' % (self._module, os.getppid(), name)
try:
pipeout = os.open(pipe_name, os.O_WRONLY)
except Exception:
self._logger.error('Cannot write %s_port %d to %s' %
(name, port, pipe_name))
else:
self._logger.error('Writing %s_port %d to %s' %
(name, port, pipe_name))
os.write(pipeout, '%d\n' % port)
os.close(pipeout)
def logger(self):
return self._logger
# end logger
def sandesh_logger(self):
return self._sandesh_logger
# end sandesh_logger
def set_logging_params(self,
enable_local_log=False,
category='',
level=SandeshLevel.SYS_INFO,
file=sand_logger.SandeshLogger._DEFAULT_LOG_FILE,
enable_syslog=False,
syslog_facility=_DEFAULT_SYSLOG_FACILITY,
enable_trace_print=False,
enable_flow_log=False):
self._sandesh_logger.set_logging_params(
enable_local_log=enable_local_log,
category=category,
level=level,
file=file,
enable_syslog=enable_syslog,
syslog_facility=syslog_facility,
enable_trace_print=enable_trace_print,
enable_flow_log=enable_flow_log)
# end set_logging_params
def set_trace_print(self, enable_trace_print):
self._sandesh_logger.set_trace_print(enable_trace_print)
# end set_trace_print
def set_flow_logging(self, enable_flow_log):
self._sandesh_logger.set_flow_logging(enable_flow_log)
# end set_flow_logging
def set_local_logging(self, enable_local_log):
self._sandesh_logger.set_local_logging(enable_local_log)
# end set_local_logging
def set_logging_level(self, level):
self._sandesh_logger.set_logging_level(level)
# end set_logging_level
def set_logging_category(self, category):
self._sandesh_logger.set_logging_category(category)
# end set_logging_category
def set_logging_file(self, file):
self._sandesh_logger.set_logging_file(file)
# end set_logging_file
def is_logging_dropped_allowed(self, sandesh):
if sandesh.type() == SandeshType.FLOW:
return self.is_flow_logging_enabled()
else:
if hasattr(sandesh, 'do_rate_limit_drop_log'):
return sandesh.do_rate_limit_drop_log
return True
# end is_logging_dropped_allowed
def is_send_queue_enabled(self):
return self._send_queue_enabled
# end is_send_queue_enabled
def is_connect_to_collector_enabled(self):
return self._connect_to_collector
# end is_connect_to_collector_enabled
def is_sending_object_logs_disabled(self):
return self._disable_sending_object_logs
# end is_sending_object_logs_disabled
def disable_sending_object_logs(self, disable):
if self._disable_sending_object_logs != disable:
self._logger.info(
"SANDESH: Disable Sending Object "
"Logs: %s -> %s", self._disable_sending_object_logs, disable)
self._disable_sending_object_logs = disable
# end disable_sending_object_logs
def is_sending_all_messages_disabled(self):
return self._disable_sending_all_messages
# end is_sending_all_messages_disabled
def disable_sending_all_messages(self, disable):
if self._disable_sending_all_messages != disable:
self._logger.info(
"SANDESH: Disable Sending ALL Messages: "
"%s -> %s", self._disable_sending_all_messages, disable)
self._disable_sending_all_messagess = disable
# end disable_sending_all_messages
def set_send_queue(self, enable):
if self._send_queue_enabled != enable:
self._logger.info("SANDESH: CLIENT: SEND QUEUE: %s -> %s",
self._send_queue_enabled, enable)
self._send_queue_enabled = enable
if enable:
connection = self._client.connection()
if connection and connection.session():
connection.session().send_queue().may_be_start_runner()
# end set_send_queue
def set_send_level(self, count, sandesh_level):
if self._send_level != sandesh_level:
self._logger.info('Sandesh Send Level [%s] -> [%s]' % \
(SandeshLevel._VALUES_TO_NAMES[self._send_level],
SandeshLevel._VALUES_TO_NAMES[sandesh_level]))
self._send_level = sandesh_level
# end set_send_level
def send_level(self):
return self._send_level
# end send_level
def init_collector(self):
pass
# end init_collector
def msg_stats(self):
return self._msg_stats
# end msg_stats
def reconfig_collectors(self, collectors):
self._client.set_collectors(collectors)
# end reconfig_collectors
@classmethod
def next_seqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 1
else:
cls._lseqnum += 1
return cls._lseqnum
# end next_seqnum
@classmethod
def lseqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 0
return cls._lseqnum
# end lseqnum
def module(self):
return self._module
# end module
def source_id(self):
return self._source
# end source_id
def node_type(self):
return self._node_type
# end node_type
def instance_id(self):
return self._instance_id
# end instance_id
def host_ip(self):
return self._host_ip
# end host_ip
def scope(self):
return self._scope
# end scope
def context(self):
return self._context
# end context
def seqnum(self):
return self._seqnum
# end seqnum
def timestamp(self):
return self._timestamp
# end timestamp
def versionsig(self):
return self._versionsig
# end versionsig
def type(self):
return self._type
# end type
def hints(self):
return self._hints
# end hints
def client(self):
return self._client
# end client
def level(self):
return self._level
# end level
def category(self):
return self._category
# end category
def validate(self):
return
# end validate
def alarm_ack_callback(self):
return self._alarm_ack_callback
# end alarm_ack_callback
def config(self):
return self._config
# end config
def is_flow_logging_enabled(self):
return self._sandesh_logger.is_flow_logging_enabled()
# end is_flow_logging_enabled
def is_trace_print_enabled(self):
return self._sandesh_logger.is_trace_print_enabled()
# end is_trace_print_enabled
def is_local_logging_enabled(self):
return self._sandesh_logger.is_local_logging_enabled()
# end is_local_logging_enabled
def logging_level(self):
return self._sandesh_logger.logging_level()
# end logging_level
def logging_category(self):
return self._sandesh_logger.logging_category()
# end logging_category
def is_syslog_logging_enabled(self):
return self._sandesh_logger.is_syslog_logging_enabled()
# end is_syslog_logging_enabled
def logging_syslog_facility(self):
return self._sandesh_logger.logging_syslog_facility()
# end logging_syslog_facility
def is_unit_test(self):
return self._role == self.SandeshRole.INVALID
# end is_unit_test
def handle_test(self, sandesh_init):
if sandesh_init.is_unit_test() or self._is_level_ut():
if self.is_logging_allowed(sandesh_init):
sandesh_init._logger.debug(self.log())
return True
return False
def is_logging_allowed(self, sandesh_init):
if self._type == SandeshType.FLOW:
return sandesh_init.is_flow_logging_enabled()
if not sandesh_init.is_local_logging_enabled():
return False
logging_level = sandesh_init.logging_level()
level_allowed = logging_level >= self._level
logging_category = sandesh_init.logging_category()
if logging_category is None or len(logging_category) == 0:
category_allowed = True
else:
category_allowed = logging_category == self._category
return level_allowed and category_allowed
# end is_logging_allowed
def enqueue_sandesh_request(self, sandesh):
self._rcv_queue.enqueue(sandesh)
# end enqueue_sandesh_request
def send_sandesh(self, tx_sandesh):
if self._client:
self._client.send_sandesh(tx_sandesh)
else:
if self._connect_to_collector:
self.drop_tx_sandesh(tx_sandesh, SandeshTxDropReason.NoClient)
else:
self.drop_tx_sandesh(tx_sandesh, SandeshTxDropReason.NoClient,
tx_sandesh.level())
# end send_sandesh
def drop_tx_sandesh(self, tx_sandesh, drop_reason, level=None):
self._msg_stats.update_tx_stats(tx_sandesh.__class__.__name__,
sys.getsizeof(tx_sandesh), drop_reason)
if self.is_logging_dropped_allowed(tx_sandesh):
if level is not None:
self._logger.log(
sand_logger.SandeshLogger.get_py_logger_level(level),
tx_sandesh.log())
else:
self._logger.error('SANDESH: [DROP: %s] %s' % \
(SandeshTxDropReason._VALUES_TO_NAMES[drop_reason],
tx_sandesh.log()))
# end drop_tx_sandesh
def send_generator_info(self):
from gen_py.sandesh_uve.ttypes import SandeshClientInfo, \
ModuleClientState, SandeshModuleClientTrace
if not self._client or not self._client.connection():
return
client_info = SandeshClientInfo()
try:
client_start_time = self._start_time
except Exception:
self._start_time = util.UTCTimestampUsec()
finally:
client_info.start_time = self._start_time
client_info.pid = os.getpid()
if self._http_server is not None:
client_info.http_port = self._http_server.get_port()
client_info.collector_name = \
self._client.connection().collector_name() or ''
client_info.collector_ip = \
self._client.connection().collector() or ''
client_info.collector_list = self._client.connection().collectors()
client_info.status = self._client.connection().state()
client_info.successful_connections = (
self._client.connection().statemachine().connect_count())
module_state = ModuleClientState(name=self._source + ':' +
self._node_type + ':' +
self._module + ':' +
self._instance_id,
client_info=client_info,
sm_queue_count=self._client.\
connection().statemachine()._event_queue.size(),
max_sm_queue_count=self._client.\
connection().statemachine()._event_queue.max_qlen())
generator_info = SandeshModuleClientTrace(data=module_state,
sandesh=self)
generator_info.send(sandesh=self)
# end send_generator_info
def get_sandesh_request_object(self, request):
try:
req_type = self._sandesh_request_map[request]
except KeyError:
self._logger.error('Invalid Sandesh Request "%s"' % (request))
return None
else:
return req_type()
# end get_sandesh_request_object
def trace_enable(self):
self._trace.TraceOn()
# end trace_enable
def trace_disable(self):
self._trace.TraceOff()
# end trace_disable
def is_trace_enabled(self):
return self._trace.IsTraceOn()
# end is_trace_enabled
def trace_buffer_create(self, name, size, enable=True):
self._trace.TraceBufAdd(name, size, enable)
# end trace_buffer_create
def trace_buffer_delete(self, name):
self._trace.TraceBufDelete(name)
# end trace_buffer_delete
def trace_buffer_enable(self, name):
self._trace.TraceBufOn(name)
# end trace_buffer_enable
def trace_buffer_disable(self, name):
self._trace.TraceBufOff(name)
# end trace_buffer_disable
def is_trace_buffer_enabled(self, name):
return self._trace.IsTraceBufOn(name)
# end is_trace_buffer_enabled
def trace_buffer_list_get(self):
return self._trace.TraceBufListGet()
# end trace_buffer_list_get
def trace_buffer_size_get(self, name):
return self._trace.TraceBufSizeGet(name)
# end trace_buffer_size_get
def trace_buffer_read(self, name, read_context, count, read_cb):
self._trace.TraceRead(name, read_context, count, read_cb)
# end trace_buffer_read
def trace_buffer_read_done(self, name, context):
self._trace.TraceReadDone(name, context)
# end trace_buffer_read_done
# API to send the trace buffer to the Collector.
# If trace count is not specified/or zero, then the entire trace buffer
# is sent to the Collector.
# [Note] No duplicate trace message sent to the Collector. i.e., If there
# is no trace message added between two consequent calls to this API, then
# no trace message is sent to the Collector.
def send_sandesh_trace_buffer(self, trace_buf, count=0):
trace_req_runner = SandeshTraceRequestRunner(
sandesh=self,
request_buffer_name=trace_buf,
request_context='',
read_context='Collector',
request_count=count)
trace_req_runner.Run()
# end send_sandesh_trace_buffer
# Private functions
def _is_level_ut(self):
return (self._level >= SandeshLevel.UT_START
and self._level <= SandeshLevel.UT_END)
# end _is_level_ut
def _create_task(self):
return gevent.spawn(self._runner.run_for_ever)
# end _create_task
def _process_rx_sandesh(self, rx_sandesh):
handle_request_fn = getattr(rx_sandesh, "handle_request", None)
if callable(handle_request_fn):
handle_request_fn(rx_sandesh)
else:
self._logger.error('Sandesh Request "%s" not implemented' %
(rx_sandesh.__class__.__name__))
# end _process_rx_sandesh
def _create_sandesh_request_and_uve_lists(self, package):
try:
imp_pkg = __import__(package)
except ImportError:
self._logger.error('Failed to import package "%s"' % (package))
else:
try:
pkg_path = imp_pkg.__path__
except AttributeError:
self._logger.error('Failed to get package [%s] path' %
(package))
return
for importer, mod, ispkg in (pkgutil.walk_packages(
path=pkg_path, prefix=imp_pkg.__name__ + '.')):
if not ispkg:
module = mod.rsplit('.', 1)[-1]
if 'ttypes' == module:
self._logger.debug(
'Add Sandesh requests in module "%s"' % (mod))
self._add_sandesh_request(mod)
self._logger.debug('Add Sandesh UVEs in module "%s"' %
(mod))
self._add_sandesh_uve(mod)
self._logger.debug(
'Add Sandesh Alarms in module "%s"' % (mod))
self._add_sandesh_alarm(mod)
# end _create_sandesh_request_and_uve_lists
def _add_sandesh_request(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
try:
sandesh_req_list = getattr(imp_module, '_SANDESH_REQUEST_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh request list' % (mod))
else:
# Add sandesh requests to the dictionary.
for req in sandesh_req_list:
self._sandesh_request_map[req.__name__] = req
# end _add_sandesh_request
def _get_sandesh_uve_list(self, imp_module):
try:
sandesh_uve_list = getattr(imp_module, '_SANDESH_UVE_LIST')
except AttributeError:
self._logger.error('"%s" module does not have sandesh UVE list' %
(imp_module.__name__))
return None
else:
return sandesh_uve_list
# end _get_sandesh_uve_list
def _add_sandesh_uve(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
sandesh_uve_list = self._get_sandesh_uve_list(imp_module)
if not sandesh_uve_list:
return
# Register sandesh UVEs
for uve_type, uve_data_type in sandesh_uve_list:
SandeshUVEPerTypeMap(self, SandeshType.UVE, uve_type,
uve_data_type)
# end _add_sandesh_uve
def _get_sandesh_alarm_list(self, imp_module):
try:
sandesh_alarm_list = getattr(imp_module, '_SANDESH_ALARM_LIST')
except AttributeError:
self._logger.error('"%s" module does not have sandesh Alarm list' %
(imp_module.__name__))
return None
else:
return sandesh_alarm_list
# end _get_sandesh_alarm_list
def _add_sandesh_alarm(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
sandesh_alarm_list = self._get_sandesh_alarm_list(imp_module)
if not sandesh_alarm_list:
return
# Register sandesh Alarms
for alarm_type, alarm_data_type in sandesh_alarm_list:
SandeshUVEPerTypeMap(self, SandeshType.ALARM, alarm_type,
alarm_data_type)
# end _add_sandesh_alarm
def _init_logger(self, module, logger_class=None, logger_config_file=None):
if not module:
module = 'sandesh'
if logger_class:
self._sandesh_logger = (sand_logger.create_logger(
module, logger_class, logger_config_file=logger_config_file))
else:
self._sandesh_logger = sand_logger.SandeshLogger(
module, logger_config_file=logger_config_file)
self._logger = self._sandesh_logger.logger()
class Sandesh(object):
_DEFAULT_LOG_FILE = SandeshLogger._DEFAULT_LOG_FILE
_DEFAULT_SYSLOG_FACILITY = SandeshLogger._DEFAULT_SYSLOG_FACILITY
class SandeshRole:
INVALID = 0
GENERATOR = 1
COLLECTOR = 2
# end class SandeshRole
def __init__(self):
self._context = ''
self._scope = ''
self._module = ''
self._source = ''
self._node_type = ''
self._instance_id = ''
self._timestamp = 0
self._versionsig = 0
self._type = 0
self._hints = 0
self._client_context = ''
self._client = None
self._role = self.SandeshRole.INVALID
self._logger = None
self._level = SandeshLevel.INVALID
self._category = ''
self._send_queue_enabled = True
self._http_server = None
# end __init__
# Public functions
def init_generator(self, module, source, node_type, instance_id,
collectors, client_context,
http_port, sandesh_req_uve_pkg_list=None,
discovery_client=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._client_context = client_context
self._collectors = collectors
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._init_logger(source + ':' + module + ':' + node_type + ':' \
+ instance_id)
self._stats = SandeshStats()
self._trace = trace.Trace()
self._sandesh_request_dict = {}
self._uve_type_maps = SandeshUVETypeMaps()
if sandesh_req_uve_pkg_list is None:
sandesh_req_uve_pkg_list = []
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
if http_port != -1:
self._http_server = SandeshHttp(
self, module, http_port, sandesh_req_uve_pkg_list)
gevent.spawn(self._http_server.start_http_server)
primary_collector = None
secondary_collector = None
if self._collectors is not None:
if len(self._collectors) > 0:
primary_collector = self._collectors[0]
if len(self._collectors) > 1:
secondary_collector = self._collectors[1]
self._client = SandeshClient(
self, primary_collector, secondary_collector,
discovery_client)
self._client.initiate()
# end init_generator
def logger(self):
return self._logger
# end logger
def sandesh_logger(self):
return self._sandesh_logger
# end sandesh_logger
def set_logging_params(self, enable_local_log=False, category='',
level=SandeshLevel.SYS_INFO,
file=SandeshLogger._DEFAULT_LOG_FILE,
enable_syslog=False,
syslog_facility=_DEFAULT_SYSLOG_FACILITY):
self._sandesh_logger.set_logging_params(
enable_local_log, category, level, file,
enable_syslog, syslog_facility)
# end set_logging_params
def set_local_logging(self, enable_local_log):
self._sandesh_logger.set_local_logging(enable_local_log)
# end set_local_logging
def set_logging_level(self, level):
self._sandesh_logger.set_logging_level(level)
# end set_logging_level
def set_logging_category(self, category):
self._sandesh_logger.set_logging_category(category)
# end set_logging_category
def set_logging_file(self, file):
self._sandesh_logger.set_logging_file(file)
# end set_logging_file
def is_send_queue_enabled(self):
return self._send_queue_enabled
# end is_send_queue_enabled
def set_send_queue(self, enable):
if self._send_queue_enabled != enable:
self._logger.info("SANDESH: CLIENT: SEND QUEUE: %s -> %s",
self._send_queue_enabled, enable)
self._send_queue_enabled = enable
if enable:
connection = self._client.connection()
if connection and connection.session():
connection.session().send_queue().may_be_start_runner()
# end set_send_queue
def init_collector(self):
pass
# end init_collector
def stats(self):
return self._stats
# end stats
@classmethod
def next_seqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 1
else:
cls._lseqnum += 1
return cls._lseqnum
# end next_seqnum
@classmethod
def lseqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 0
return cls._lseqnum
# end lseqnum
def module(self):
return self._module
# end module
def source_id(self):
return self._source
# end source_id
def node_type(self):
return self._node_type
#end node_type
def instance_id(self):
return self._instance_id
#end instance_id
def scope(self):
return self._scope
# end scope
def context(self):
return self._context
# end context
def seqnum(self):
return self._seqnum
# end seqnum
def timestamp(self):
return self._timestamp
# end timestamp
def versionsig(self):
return self._versionsig
# end versionsig
def type(self):
return self._type
# end type
def hints(self):
return self._hints
# end hints
def client(self):
return self._client
# end client
def level(self):
return self._level
# end level
def category(self):
return self._category
# end category
def validate(self):
return
# end validate
def is_local_logging_enabled(self):
return self._sandesh_logger.is_local_logging_enabled()
# end is_local_logging_enabled
def logging_level(self):
return self._sandesh_logger.logging_level()
# end logging_level
def logging_category(self):
return self._sandesh_logger.logging_category()
# end logging_category
def is_syslog_logging_enabled(self):
return self._sandesh_logger.is_syslog_logging_enabled()
#end is_syslog_logging_enabled
def logging_syslog_facility(self):
return self._sandesh_logger.logging_syslog_facility()
#end logging_syslog_facility
def is_unit_test(self):
return self._role == self.SandeshRole.INVALID
# end is_unit_test
def handle_test(self, sandesh_init):
if sandesh_init.is_unit_test() or self._is_level_ut():
if self._is_logging_allowed(sandesh_init):
sandesh_init._logger.debug(self.log())
return True
return False
def is_logging_allowed(self, sandesh_init):
if not sandesh_init.is_local_logging_enabled():
return False
logging_level = sandesh_init.logging_level()
level_allowed = logging_level >= self._level
logging_category = sandesh_init.logging_category()
if logging_category is None or len(logging_category) == 0:
category_allowed = True
else:
category_allowed = logging_category == self._category
return level_allowed and category_allowed
# end is_logging_allowed
def enqueue_sandesh_request(self, sandesh):
self._rcv_queue.enqueue(sandesh)
# end enqueue_sandesh_request
def send_sandesh(self, tx_sandesh):
if self._client:
ret = self._client.send_sandesh(tx_sandesh)
else:
self._logger.debug(tx_sandesh.log())
# end send_sandesh
def send_generator_info(self):
from gen_py.sandesh_uve.ttypes import SandeshClientInfo, \
ModuleClientState, SandeshModuleClientTrace
client_info = SandeshClientInfo()
try:
client_start_time = self._start_time
except:
self._start_time = UTCTimestampUsec()
finally:
client_info.start_time = self._start_time
client_info.pid = os.getpid()
if self._http_server is not None:
client_info.http_port = self._http_server.get_port()
client_info.collector_name = self._client.connection().collector()
client_info.status = self._client.connection().state()
client_info.successful_connections = \
self._client.connection().statemachine().connect_count()
client_info.primary = self._client.connection().primary_collector()
if client_info.primary is None:
client_info.primary = ''
client_info.secondary = \
self._client.connection().secondary_collector()
if client_info.secondary is None:
client_info.secondary = ''
module_state = ModuleClientState(name=self._source + ':' +
self._node_type + ':' +
self._module + ':' +
self._instance_id,
client_info=client_info)
generator_info = SandeshModuleClientTrace(
data=module_state, sandesh=self)
generator_info.send(sandesh=self)
# end send_generator_info
def get_sandesh_request_object(self, request):
try:
req_module = self._sandesh_request_dict[request]
except KeyError:
self._logger.error('Invalid Sandesh Request "%s"' % (request))
return None
else:
if req_module:
try:
imp_module = importlib.import_module(req_module)
except ImportError:
self._logger.error(
'Failed to import Module "%s"' % (req_module))
else:
try:
sandesh_request = getattr(imp_module, request)()
return sandesh_request
except AttributeError:
self._logger.error(
'Failed to create Sandesh Request "%s"' %
(request))
return None
else:
self._logger.error(
'Sandesh Request "%s" not implemented' % (request))
return None
# end get_sandesh_request_object
def trace_enable(self):
self._trace.TraceOn()
# end trace_enable
def trace_disable(self):
self._trace.TraceOff()
# end trace_disable
def is_trace_enabled(self):
return self._trace.IsTraceOn()
# end is_trace_enabled
def trace_buffer_create(self, name, size, enable=True):
self._trace.TraceBufAdd(name, size, enable)
# end trace_buffer_create
def trace_buffer_delete(self, name):
self._trace.TraceBufDelete(name)
# end trace_buffer_delete
def trace_buffer_enable(self, name):
self._trace.TraceBufOn(name)
# end trace_buffer_enable
def trace_buffer_disable(self, name):
self._trace.TraceBufOff(name)
# end trace_buffer_disable
def is_trace_buffer_enabled(self, name):
return self._trace.IsTraceBufOn(name)
# end is_trace_buffer_enabled
def trace_buffer_list_get(self):
return self._trace.TraceBufListGet()
# end trace_buffer_list_get
def trace_buffer_size_get(self, name):
return self._trace.TraceBufSizeGet(name)
# end trace_buffer_size_get
def trace_buffer_read(self, name, read_context, count, read_cb):
self._trace.TraceRead(name, read_context, count, read_cb)
# end trace_buffer_read
def trace_buffer_read_done(self, name, context):
self._trace.TraceReadDone(name, context)
# end trace_buffer_read_done
# API to send the trace buffer to the Collector.
# If trace count is not specified/or zero, then the entire trace buffer
# is sent to the Collector.
# [Note] No duplicate trace message sent to the Collector. i.e., If there
# is no trace message added between two consequent calls to this API, then
# no trace message is sent to the Collector.
def send_sandesh_trace_buffer(self, trace_buf, count=0):
trace_req_runner = SandeshTraceRequestRunner(sandesh=self,
request_buffer_name=
trace_buf,
request_context='',
read_context='Collector',
request_count=count)
trace_req_runner.Run()
# end send_sandesh_trace_buffer
# Private functions
def _is_level_ut(self):
return self._level >= SandeshLevel.UT_START and \
self._level <= SandeshLevel.UT_END
# end _is_level_ut
def _create_task(self):
return gevent.spawn(self._runner.run_for_ever)
# end _create_task
def _process_rx_sandesh(self, rx_sandesh):
handle_request_fn = getattr(rx_sandesh, "handle_request", None)
if callable(handle_request_fn):
handle_request_fn(rx_sandesh)
else:
self._logger.error('Sandesh Request "%s" not implemented' %
(rx_sandesh.__class__.__name__))
# end _process_rx_sandesh
def _create_sandesh_request_and_uve_lists(self, package):
try:
imp_pkg = __import__(package)
except ImportError:
self._logger.error('Failed to import package "%s"' % (package))
else:
try:
pkg_path = imp_pkg.__path__
except AttributeError:
self._logger.error(
'Failed to get package [%s] path' % (package))
return
for importer, mod, ispkg in \
pkgutil.walk_packages(path=pkg_path,
prefix=imp_pkg.__name__ + '.'):
if not ispkg:
module = mod.rsplit('.', 1)[-1]
if 'ttypes' == module:
self._logger.debug(
'Add Sandesh requests in module "%s"' % (mod))
self._add_sandesh_request(mod)
self._logger.debug(
'Add Sandesh UVEs in module "%s"' % (mod))
self._add_sandesh_uve(mod)
# end _create_sandesh_request_and_uve_lists
def _add_sandesh_request(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
try:
sandesh_req_list = getattr(imp_module, '_SANDESH_REQUEST_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh request list' % (mod))
else:
# Add sandesh requests to the dictionary.
for req in sandesh_req_list:
self._sandesh_request_dict[req] = mod
# end _add_sandesh_request
def _add_sandesh_uve(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
try:
sandesh_uve_list = getattr(imp_module, '_SANDESH_UVE_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh UVE list' % (mod))
else:
# Register sandesh UVEs
for uve_type_name in sandesh_uve_list:
SandeshUVEPerTypeMap(self, uve_type_name, mod)
# end _add_sandesh_uve
def _init_logger(self, generator):
if not generator:
generator = 'sandesh'
self._sandesh_logger = SandeshLogger(generator)
self._logger = self._sandesh_logger.logger()
class SandeshStateMachine(object):
_IDLE_HOLD_TIME = 4 # in seconds
_CONNECT_TIME = 30 # in seconds
def __init__(self, connection, logger, collectors):
def _update_connection_state(e, status):
from connection_info import ConnectionState
from gen_py.process_info.ttypes import ConnectionType
collector_addr = e.sm.collector()
if collector_addr is None:
collector_addr = ''
ConnectionState.update(conn_type = ConnectionType.COLLECTOR,
name = '',
status = status,
server_addrs = [collector_addr],
message = '%s to %s on %s' % (e.src, e.dst, e.event))
#end _update_connection_state
def _connection_state_up(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.UP)
#end _connection_state_up
def _connection_state_down(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.DOWN)
#end _connection_state_down
def _connection_state_init(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.INIT)
#end _connection_state_init
def _on_idle(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# clean up existing connection
e.sm._delete_session()
if e.sm._disable != True:
e.sm._start_idle_hold_timer()
# update connection state
_connection_state_down(e)
e.sm._collector_name = None
e.sm._connection.sandesh_instance().send_generator_info()
#end _on_idle
def _on_disconnect(e):
# update connection state
_connection_state_down(e)
#end _on_disconnect
def _on_connect(e):
if e.sm._idle_hold_timer is not None:
e.sm._cancel_idle_hold_timer()
e.sm._collector_name = None
# clean up existing connection
e.sm._delete_session()
collector = e.sm._get_next_collector()
if collector is not None:
# update connection state
_connection_state_init(e)
e.sm._create_session(collector)
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event = Event._EV_COLLECTOR_UNKNOWN))
#end _on_connect
def _on_client_init(e):
e.sm._connects += 1
gevent.spawn(e.sm._session.read)
e.sm._connection.handle_initialized(e.sm._connects)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_init(e)
#end _on_client_init
def _on_established(e):
e.sm._cancel_connect_timer()
e.sm._collector_name = e.sm_event.source
e.sm._connection.handle_sandesh_ctrl_msg(e.sm_event.msg)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_up(e)
#end _on_established
# FSM - Fysom
self._fsm = Fysom({
'initial': {'state' : State._IDLE,
'event' : Event._EV_START,
'defer' : True
},
'events': [
# _IDLE
{'name' : Event._EV_IDLE_HOLD_TIMER_EXPIRED,
'src' : State._IDLE,
'dst' : State._CONNECT
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._IDLE,
'dst' : State._CONNECT
},
{'name' : Event._EV_START,
'src' : State._IDLE,
'dst' : State._CONNECT
},
# _DISCONNECT
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._DISCONNECT,
'dst' : State._CONNECT
},
# _CONNECT
{'name' : Event._EV_COLLECTOR_UNKNOWN,
'src' : State._CONNECT,
'dst' : State._DISCONNECT
},
{'name' : Event._EV_TCP_CONNECT_FAIL,
'src' : State._CONNECT,
'dst' : State._IDLE
},
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CONNECT,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CONNECT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECTED,
'src' : State._CONNECT,
'dst' : State._CLIENT_INIT
},
# _CLIENT_INIT
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CLOSE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_SANDESH_CTRL_MESSAGE_RECV,
'src' : State._CLIENT_INIT,
'dst' : State._ESTABLISHED
},
# _ESTABLISHED
{'name' : Event._EV_TCP_CLOSE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT
},
{'name' : Event._EV_STOP,
'src' : State._ESTABLISHED,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT
}
],
'callbacks': {
'on' + State._IDLE : _on_idle,
'on' + State._CONNECT : _on_connect,
'on' + State._CLIENT_INIT : _on_client_init,
'on' + State._ESTABLISHED : _on_established,
}
})
self._connection = connection
self._session = None
self._connects = 0
self._disable = False
self._idle_hold_timer = None
self._connect_timer = None
self._collectors = collectors
self._collector_name = None
self._collector_index = -1
self._logger = logger
self._event_queue = WorkQueue(self._dequeue_event,
self._is_ready_to_dequeue_event)
#end __init__
# Public functions
def initialize(self):
self.enqueue_event(Event(event = Event._EV_START))
#end initialize
def session(self):
return self._session
#end session
def state(self):
return self._fsm.current
#end state
def shutdown(self):
self._disable = True
self.enqueue_event(Event(event = Event._EV_STOP))
#end shutdown
def set_admin_state(self, down):
if down == True:
self._disable = True
self.enqueue_event(Event(event = Event._EV_STOP))
else:
self._disable = False
self.enqueue_event(Event(event = Event._EV_START))
#end set_admin_state
def connect_count(self):
return self._connects
#end connect_count
def collector(self):
if self._collector_index is -1:
return None
return self._collectors[self._collector_index]
# end collector
def collector_name(self):
return self._collector_name
# end collector_name
def collectors(self):
return self._collectors
# end collectors
def enqueue_event(self, event):
self._event_queue.enqueue(event)
#end enqueue_event
def on_session_event(self, session, event):
if session is not self._session:
self._logger.error("Ignore session event [%d] received for old session" % (event))
return
if SandeshSession.SESSION_ESTABLISHED == event:
self._logger.info("Session Event: TCP Connected")
self.enqueue_event(Event(event = Event._EV_TCP_CONNECTED,
session = session))
elif SandeshSession.SESSION_ERROR == event:
self._logger.error("Session Event: TCP Connect Fail")
self.enqueue_event(Event(event = Event._EV_TCP_CONNECT_FAIL,
session = session))
elif SandeshSession.SESSION_CLOSE == event:
self._logger.error("Session Event: TCP Connection Closed")
self.enqueue_event(Event(event = Event._EV_TCP_CLOSE,
session = session))
else:
self._logger.error("Received unknown session event [%d]" % (event))
#end on_session_event
def on_sandesh_ctrl_msg_receive(self, session, sandesh_ctrl, collector):
if sandesh_ctrl.success == True:
self.enqueue_event(Event(event = Event._EV_SANDESH_CTRL_MESSAGE_RECV,
session = session,
msg = sandesh_ctrl,
source = collector))
else:
# Negotiation with the Collector failed, reset the
# connection and retry after sometime.
self._logger.error("Negotiation with the Collector %s failed." % (collector))
self._session.close()
#end on_sandesh_ctrl_msg_receive
def on_sandesh_uve_msg_send(self, sandesh_uve):
self.enqueue_event(Event(event = Event._EV_SANDESH_UVE_SEND,
msg = sandesh_uve))
#end on_sandesh_uve_msg_send
# Private functions
def _create_session(self, collector):
assert self._session is None
collector_ip_port = collector.split(':')
server = (collector_ip_port[0], int(collector_ip_port[1]))
self._session = SandeshSession(self._connection.sandesh_instance(),
server,
self.on_session_event,
self._connection._receive_sandesh_msg)
#end _create_session
def _delete_session(self):
if self._session:
self._session.close()
self._session = None
self._collector_name = None
#end _delete_session
def _get_next_collector(self):
if self._collector_index is -1:
if not self._collectors:
return None
self._collector_index = 0
else:
self._collector_index += 1
if self._collector_index == len(self._collectors):
self._collector_index = 0
return self._collectors[self._collector_index]
# end _get_next_collector
def _start_idle_hold_timer(self):
if self._idle_hold_timer is None:
if self._IDLE_HOLD_TIME:
self._idle_hold_timer = gevent.spawn_later(self._IDLE_HOLD_TIME,
self._idle_hold_timer_expiry_handler)
else:
self.enqueue_event(Event(event = Event._EV_IDLE_HOLD_TIMER_EXPIRED))
#end _start_idle_hold_timer
def _cancel_idle_hold_timer(self):
if self._idle_hold_timer is not None:
gevent.kill(self._idle_hold_timer)
self._idle_hold_timer = None
#end _cancel_idle_hold_timer
def _idle_hold_timer_expiry_handler(self):
self._idle_hold_timer = None
self.enqueue_event(Event(event = Event._EV_IDLE_HOLD_TIMER_EXPIRED))
#end _idle_hold_timer_expiry_handler
def _start_connect_timer(self):
if self._connect_timer is None:
self._connect_timer = gevent.spawn_later(self._CONNECT_TIME,
self._connect_timer_expiry_handler,
self._session)
#end _start_connect_timer
def _cancel_connect_timer(self):
if self._connect_timer is not None:
gevent.kill(self._connect_timer)
self._connect_timer = None
#end _cancel_connect_timer
def _connect_timer_expiry_handler(self, session):
self._connect_timer = None
self.enqueue_event(Event(event = Event._EV_CONNECT_TIMER_EXPIRED,
session = session))
#end _connect_timer_expiry_handler
def _is_ready_to_dequeue_event(self):
return True
#end _is_ready_to_dequeue_event
def _log_event(self, event):
if self._fsm.current == State._ESTABLISHED and \
event.event == Event._EV_SANDESH_UVE_SEND:
return False
return True
#end _log_event
def _dequeue_event(self, event):
if self._log_event(event):
self._logger.info("Processing event[%s] in state[%s]" \
% (event.event, self._fsm.current))
if event.session is not None and event.session is not self._session:
self._logger.info("Ignore event [%s] received for old session" \
% (event.event))
return
if event.event == Event._EV_COLLECTOR_CHANGE:
collector = self.collector()
self._collector_index = -1
collector_list_change = False
if self._collectors != event.collectors:
self._collectors = event.collectors
collector_list_change = True
if self._collectors and self._collectors[0] == collector:
self._collector_index = 0
self._logger.info("No change in active collector. "
"Ignore event [%s]" % (event.event))
if collector_list_change:
# update the collector_list in the ModuleClientState UVE
self._connection.sandesh_instance().send_generator_info()
return
self._connection.sandesh_instance().send_generator_info()
if event.event == Event._EV_SANDESH_UVE_SEND:
if self._fsm.current == State._ESTABLISHED or self._fsm.current == State._CLIENT_INIT:
self._connection.handle_sandesh_uve_msg(event.msg)
else:
self._connection.sandesh_instance().drop_tx_sandesh(event.msg,
SandeshTxDropReason.WrongClientSMState)
self._logger.info("Discarding event[%s] in state[%s]" \
% (event.event, self._fsm.current))
elif event.event == Event._EV_SANDESH_CTRL_MESSAGE_RECV and \
self._fsm.current == State._ESTABLISHED:
self._connection.handle_sandesh_ctrl_msg(event.msg)
elif self._fsm.cannot(event.event) is True:
self._logger.info("Unconsumed event[%s] in state[%s]" \
% (event.event, self._fsm.current))
else:
prev_state = self.state()
getattr(self._fsm, event.event)(sm = self, sm_event = event)
# Log state transition
self._logger.info("Sandesh Client: Event[%s] => State[%s] -> State[%s]" \
% (event.event, prev_state, self.state()))
from work_queue import Task, WorkQueue, set_debug_flag
from work_queue import WORK_QUEUE_SCHEDULE_FCFS, WORK_QUEUE_SCHEDULE_FILES
from work_queue import WORK_QUEUE_RANDOM_PORT
from work_queue import WORK_QUEUE_OUTPUT
#from workqueue import WORK_QUEUE_MASTER_MODE_STANDALONE, WORK_QUEUE_WORKER_MODE_SHARED
from work_queue import WORK_QUEUE_TASK_ORDER_LIFO
import os
import sys
import time
set_debug_flag('debug')
set_debug_flag('wq')
wq = WorkQueue(WORK_QUEUE_RANDOM_PORT,
name='workqueue_example',
catalog=True,
exclusive=False)
os.environ['PATH'] = '../../../work_queue/src:' + os.environ['PATH']
os.system('work_queue_worker -d all localhost %d &' % wq.port)
print wq.name
wq.specify_algorithm(WORK_QUEUE_SCHEDULE_FCFS)
#wq.specify_name('workqueue_example')
#wq.specify_master_mode(WORK_QUEUE_MASTER_MODE_STANDALONE)
#wq.specify_worker_mode(WORK_QUEUE_WORKER_MODE_SHARED)
wq.specify_task_order(WORK_QUEUE_TASK_ORDER_LIFO)
if wq.empty():
print 'work queue is empty'
class JobGenerator(object):
def __init__(self, template, debug=False, dry_run=False):
self.config = Configuration()
self.debug = debug
self.dry_run = dry_run
# The work queue will figure out a valid combination of MongoDB access
# parameters, e.g., host/port, URI, or replica set discovery via DNS
self.wq = WorkQueue(host=self.config.mongodb_host,
port=self.config.mongodb_port,
uri=self.config.mongodb_uri,
srv_name=self.config.mongodb_rs_srv,
database=self.config.mongodb_queue_db,
replicaset=self.config.mongodb_rs,
collection=self.config.mongodb_queue_col)
if not os.path.exists(template):
raise Exception("Template file does not exist")
self.template_dir = os.path.dirname(template)
self.template_file = os.path.basename(template)
if self.template_file == "":
raise Exception("Template must be a file, not a directory")
self.jinja = jinja2.Environment(loader=jinja2.FileSystemLoader(
self.template_dir),
autoescape=False)
def _generate_random_id(self, team_cyan, team_magenta, suffix_length=8):
return team_cyan + "-vs-" + team_magenta + ":" + \
''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(suffix_length))
#''.join(random.choices(string.ascii_uppercase + string.digits, k=8))
def _generate_id(self,
tournament_name,
team_cyan,
team_magenta,
index,
suffix_length=6):
return \
"{tournament_name}:{:0{width}}:{team_cyan}-vs-{team_magenta}"\
.format(index, width=suffix_length, tournament_name=tournament_name,
team_cyan=team_cyan, team_magenta=team_magenta)
@staticmethod
def id_regex(tournament_name):
return "^%s:\d+:.*" % tournament_name
def generate(self, tournament_name, team_cyan, team_magenta, job_num=None):
param_vars = {
"tournament_name": tournament_name,
"team_name_cyan": team_cyan,
"team_name_magenta": team_magenta or ""
}
template = self.jinja.get_template(self.template_file)
if template is None:
print("Failed to get template '%s' (in '%s')" %
(self.template_file, self.template_dir))
raise FileNotFoundError("Could not find template '%s' ( in '%s')" \
% (template_name, self.template_dir))
yamldoc = template.render(param_vars)
if self.debug: print("YAML:\n%s" % yamldoc)
try:
(tournament_doc, parameter_doc) = yaml.load_all(yamldoc)
except:
for idx, line in enumerate(yamldoc.splitlines()):
print("%-4d: %s" % (idx, line))
raise
#if self.debug:
#print("Tournament:\n")
#pprint(tournament_doc)
#print("Parameters:\n")
#pprint(parameter_doc)
#print("Parameters:")
#for p in parameter_doc["parameters"]:
# print("- %s" % p["template"])
idnum = job_num if job_num is not None else 1 if self.dry_run else self.wq.get_next_id(
)
jobname = self._generate_id(tournament_name, team_cyan, team_magenta,
idnum)
params = {
"parameter_vars": param_vars,
"parameter_doc_yaml": yamldoc,
"template_parameters": parameter_doc["parameters"]
}
#if self.debug:
#print("Job Parameters")
#pprint(params)
return (jobname, idnum, params)
def store(self, jobname, idnum, params):
if not self.dry_run:
self.wq.add_item(jobname, idnum, params)
def generate_and_store(self, tournament_name, team_cyan, team_magenta):
(jobname, idnum, params) = self.generate(tournament_name, team_cyan,
team_magenta)
self.store(jobname, idnum, params)
return (jobname, idnum, params)
def update_params(self,
tournament_name,
print_diffs=False,
only_pending=True):
for i in self.wq.get_items(JobGenerator.id_regex(tournament_name)):
if only_pending and i['status']['state'] != 'pending': continue
job_parts = i['name'].split(':')
teams = job_parts[2].split("-vs-")
(jobname, idnum, params) = \
self.generate(job_parts[0], teams[0], teams[1], job_num=int(job_parts[1]))
if jobname != i['name']:
raise Exception("Invalid jobname, expected '%s', got '%s'" %
(i['name'], jobname))
diff = unified_diff(
i["params"]["parameter_doc_yaml"].splitlines(True),
params['parameter_doc_yaml'].splitlines(True),
fromfile='%s OLD' % jobname,
tofile='%s' % jobname)
diffstr = ''.join(diff)
if print_diffs:
if len(diffstr) == 0:
print("%s: no update required" % jobname)
else:
print(diffstr)
if not self.dry_run and len(diffstr) > 0:
update = {
"$push": {
"updates": {
"updated": datetime.datetime.utcnow(),
"diff": diffstr
}
},
"$set": {
"status.state": "pending",
"params": params
},
"$unset": {
"manifests": "",
"status.completed": "",
"status.running": ""
}
}
if self.debug: pprint(update)
self.wq.update_item(jobname, update)
def cancel_jobs(self, tournament_name, only_pending=True):
update = {
"$set": {
"status.state": "cancelled",
"status.cancelled": datetime.datetime.utcnow()
}
}
for i in self.wq.get_items(JobGenerator.id_regex(tournament_name)):
if i['status']['state'] != 'cancelled' and \
(not only_pending or i['status']['state'] == 'pending'):
print("Cancelling %s" % i['name'])
if not self.dry_run:
self.wq.update_item(i['name'], update)
class Sandesh(object):
_DEFAULT_LOG_FILE = sand_logger.SandeshLogger._DEFAULT_LOG_FILE
_DEFAULT_SYSLOG_FACILITY = (
sand_logger.SandeshLogger._DEFAULT_SYSLOG_FACILITY)
class SandeshRole:
INVALID = 0
GENERATOR = 1
COLLECTOR = 2
# end class SandeshRole
def __init__(self):
self._context = ''
self._scope = ''
self._module = ''
self._source = ''
self._node_type = ''
self._instance_id = ''
self._timestamp = 0
self._versionsig = 0
self._type = 0
self._hints = 0
self._client_context = ''
self._client = None
self._role = self.SandeshRole.INVALID
self._logger = None
self._level = SandeshLevel.INVALID
self._category = ''
self._send_queue_enabled = True
self._http_server = None
self._connect_to_collector = True
# end __init__
# Public functions
def init_generator(self, module, source, node_type, instance_id,
collectors, client_context,
http_port, sandesh_req_uve_pkg_list=None,
discovery_client=None, connect_to_collector=True,
logger_class=None, logger_config_file=None,
host_ip='127.0.0.1', alarm_ack_callback=None):
self._role = self.SandeshRole.GENERATOR
self._module = module
self._source = source
self._node_type = node_type
self._instance_id = instance_id
self._host_ip = host_ip
self._client_context = client_context
self._collectors = collectors
self._connect_to_collector = connect_to_collector
self._rcv_queue = WorkQueue(self._process_rx_sandesh)
self._send_level = SandeshLevel.INVALID
self._init_logger(module, logger_class=logger_class,
logger_config_file=logger_config_file)
self._logger.info('SANDESH: CONNECT TO COLLECTOR: %s',
connect_to_collector)
from sandesh_stats import SandeshMessageStatistics
self._msg_stats = SandeshMessageStatistics()
self._trace = trace.Trace()
self._sandesh_request_map = {}
self._alarm_ack_callback = alarm_ack_callback
self._uve_type_maps = SandeshUVETypeMaps(self._logger)
if sandesh_req_uve_pkg_list is None:
sandesh_req_uve_pkg_list = []
# Initialize the request handling
# Import here to break the cyclic import dependency
import sandesh_req_impl
sandesh_req_impl = sandesh_req_impl.SandeshReqImpl(self)
sandesh_req_uve_pkg_list.append('pysandesh.gen_py')
for pkg_name in sandesh_req_uve_pkg_list:
self._create_sandesh_request_and_uve_lists(pkg_name)
self._gev_httpd = None
if http_port != -1:
self._http_server = SandeshHttp(
self, module, http_port, sandesh_req_uve_pkg_list)
self._gev_httpd = gevent.spawn(self._http_server.start_http_server)
primary_collector = None
secondary_collector = None
if self._collectors is not None:
if len(self._collectors) > 0:
primary_collector = self._collectors[0]
if len(self._collectors) > 1:
secondary_collector = self._collectors[1]
if self._connect_to_collector:
self._client = SandeshClient(
self, primary_collector, secondary_collector,
discovery_client)
self._client.initiate()
# end init_generator
def uninit(self):
self.kill_httpd()
def kill_httpd(self):
if self._gev_httpd:
try:
self._http_server.stop_http_server()
self._http_server = None
gevent.sleep(0)
self._gev_httpd.kill()
except Exception as e:
self._logger.debug(str(e))
def record_port(self, name, port):
pipe_name = '/tmp/%s.%d.%s_port' % (self._module, os.getppid(), name)
try:
pipeout = os.open(pipe_name, os.O_WRONLY)
except Exception:
self._logger.error('Cannot write %s_port %d to %s'
% (name, port, pipe_name))
else:
self._logger.error('Writing %s_port %d to %s'
% (name, port, pipe_name))
os.write(pipeout, '%d\n' % port)
os.close(pipeout)
def logger(self):
return self._logger
# end logger
def sandesh_logger(self):
return self._sandesh_logger
# end sandesh_logger
def set_logging_params(self, enable_local_log=False, category='',
level=SandeshLevel.SYS_INFO,
file=sand_logger.SandeshLogger._DEFAULT_LOG_FILE,
enable_syslog=False,
syslog_facility=_DEFAULT_SYSLOG_FACILITY,
enable_trace_print=False,
enable_flow_log=False):
self._sandesh_logger.set_logging_params(
enable_local_log=enable_local_log, category=category,
level=level, file=file, enable_syslog=enable_syslog,
syslog_facility=syslog_facility,
enable_trace_print=enable_trace_print,
enable_flow_log=enable_flow_log)
# end set_logging_params
def set_trace_print(self, enable_trace_print):
self._sandesh_logger.set_trace_print(enable_trace_print)
# end set_trace_print
def set_flow_logging(self, enable_flow_log):
self._sandesh_logger.set_flow_logging(enable_flow_log)
# end set_flow_logging
def set_local_logging(self, enable_local_log):
self._sandesh_logger.set_local_logging(enable_local_log)
# end set_local_logging
def set_logging_level(self, level):
self._sandesh_logger.set_logging_level(level)
# end set_logging_level
def set_logging_category(self, category):
self._sandesh_logger.set_logging_category(category)
# end set_logging_category
def set_logging_file(self, file):
self._sandesh_logger.set_logging_file(file)
# end set_logging_file
def is_logging_dropped_allowed(self, sandesh):
if sandesh.type() == SandeshType.FLOW:
return self.is_flow_logging_enabled()
else:
if hasattr(sandesh, 'do_rate_limit_drop_log'):
return sandesh.do_rate_limit_drop_log
return True
# end is_logging_dropped_allowed
def is_send_queue_enabled(self):
return self._send_queue_enabled
# end is_send_queue_enabled
def is_connect_to_collector_enabled(self):
return self._connect_to_collector
# end is_connect_to_collector_enabled
def set_send_queue(self, enable):
if self._send_queue_enabled != enable:
self._logger.info("SANDESH: CLIENT: SEND QUEUE: %s -> %s",
self._send_queue_enabled, enable)
self._send_queue_enabled = enable
if enable:
connection = self._client.connection()
if connection and connection.session():
connection.session().send_queue().may_be_start_runner()
# end set_send_queue
def set_send_level(self, count, sandesh_level):
if self._send_level != sandesh_level:
self._logger.info('Sandesh Send Level [%s] -> [%s]' % \
(SandeshLevel._VALUES_TO_NAMES[self._send_level],
SandeshLevel._VALUES_TO_NAMES[sandesh_level]))
self._send_level = sandesh_level
# end set_send_level
def send_level(self):
return self._send_level
# end send_level
def init_collector(self):
pass
# end init_collector
def msg_stats(self):
return self._msg_stats
# end msg_stats
@classmethod
def next_seqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 1
else:
cls._lseqnum += 1
return cls._lseqnum
# end next_seqnum
@classmethod
def lseqnum(cls):
if not hasattr(cls, '_lseqnum'):
cls._lseqnum = 0
return cls._lseqnum
# end lseqnum
def module(self):
return self._module
# end module
def source_id(self):
return self._source
# end source_id
def node_type(self):
return self._node_type
# end node_type
def instance_id(self):
return self._instance_id
# end instance_id
def host_ip(self):
return self._host_ip
# end host_ip
def scope(self):
return self._scope
# end scope
def context(self):
return self._context
# end context
def seqnum(self):
return self._seqnum
# end seqnum
def timestamp(self):
return self._timestamp
# end timestamp
def versionsig(self):
return self._versionsig
# end versionsig
def type(self):
return self._type
# end type
def hints(self):
return self._hints
# end hints
def client(self):
return self._client
# end client
def level(self):
return self._level
# end level
def category(self):
return self._category
# end category
def validate(self):
return
# end validate
def alarm_ack_callback(self):
return self._alarm_ack_callback
# end alarm_ack_callback
def is_flow_logging_enabled(self):
return self._sandesh_logger.is_flow_logging_enabled()
# end is_flow_logging_enabled
def is_trace_print_enabled(self):
return self._sandesh_logger.is_trace_print_enabled()
# end is_trace_print_enabled
def is_local_logging_enabled(self):
return self._sandesh_logger.is_local_logging_enabled()
# end is_local_logging_enabled
def logging_level(self):
return self._sandesh_logger.logging_level()
# end logging_level
def logging_category(self):
return self._sandesh_logger.logging_category()
# end logging_category
def is_syslog_logging_enabled(self):
return self._sandesh_logger.is_syslog_logging_enabled()
# end is_syslog_logging_enabled
def logging_syslog_facility(self):
return self._sandesh_logger.logging_syslog_facility()
# end logging_syslog_facility
def is_unit_test(self):
return self._role == self.SandeshRole.INVALID
# end is_unit_test
def handle_test(self, sandesh_init):
if sandesh_init.is_unit_test() or self._is_level_ut():
if self.is_logging_allowed(sandesh_init):
sandesh_init._logger.debug(self.log())
return True
return False
def is_logging_allowed(self, sandesh_init):
if self._type == SandeshType.FLOW:
return sandesh_init.is_flow_logging_enabled()
if not sandesh_init.is_local_logging_enabled():
return False
logging_level = sandesh_init.logging_level()
level_allowed = logging_level >= self._level
logging_category = sandesh_init.logging_category()
if logging_category is None or len(logging_category) == 0:
category_allowed = True
else:
category_allowed = logging_category == self._category
return level_allowed and category_allowed
# end is_logging_allowed
def enqueue_sandesh_request(self, sandesh):
self._rcv_queue.enqueue(sandesh)
# end enqueue_sandesh_request
def send_sandesh(self, tx_sandesh):
if self._client:
self._client.send_sandesh(tx_sandesh)
else:
if self._connect_to_collector:
self.drop_tx_sandesh(tx_sandesh, SandeshTxDropReason.NoClient)
else:
self.drop_tx_sandesh(tx_sandesh, SandeshTxDropReason.NoClient,
tx_sandesh.level())
# end send_sandesh
def drop_tx_sandesh(self, tx_sandesh, drop_reason, level=None):
self._msg_stats.update_tx_stats(tx_sandesh.__class__.__name__,
sys.getsizeof(tx_sandesh), drop_reason)
if self.is_logging_dropped_allowed(tx_sandesh):
if level is not None:
self._logger.log(
sand_logger.SandeshLogger.get_py_logger_level(level),
tx_sandesh.log())
else:
self._logger.error('SANDESH: [DROP: %s] %s' % \
(SandeshTxDropReason._VALUES_TO_NAMES[drop_reason],
tx_sandesh.log()))
# end drop_tx_sandesh
def send_generator_info(self):
from gen_py.sandesh_uve.ttypes import SandeshClientInfo, \
ModuleClientState, SandeshModuleClientTrace
client_info = SandeshClientInfo()
try:
client_start_time = self._start_time
except Exception:
self._start_time = util.UTCTimestampUsec()
finally:
client_info.start_time = self._start_time
client_info.pid = os.getpid()
if self._http_server is not None:
client_info.http_port = self._http_server.get_port()
client_info.collector_name = self._client.connection().collector()
client_info.status = self._client.connection().state()
client_info.successful_connections = (
self._client.connection().statemachine().connect_count())
client_info.primary = self._client.connection().primary_collector()
if client_info.primary is None:
client_info.primary = ''
client_info.secondary = (
self._client.connection().secondary_collector())
if client_info.secondary is None:
client_info.secondary = ''
module_state = ModuleClientState(name=self._source + ':' +
self._node_type + ':' +
self._module + ':' +
self._instance_id,
client_info=client_info)
generator_info = SandeshModuleClientTrace(
data=module_state, sandesh=self)
generator_info.send(sandesh=self)
# end send_generator_info
def get_sandesh_request_object(self, request):
try:
req_type = self._sandesh_request_map[request]
except KeyError:
self._logger.error('Invalid Sandesh Request "%s"' % (request))
return None
else:
return req_type()
# end get_sandesh_request_object
def trace_enable(self):
self._trace.TraceOn()
# end trace_enable
def trace_disable(self):
self._trace.TraceOff()
# end trace_disable
def is_trace_enabled(self):
return self._trace.IsTraceOn()
# end is_trace_enabled
def trace_buffer_create(self, name, size, enable=True):
self._trace.TraceBufAdd(name, size, enable)
# end trace_buffer_create
def trace_buffer_delete(self, name):
self._trace.TraceBufDelete(name)
# end trace_buffer_delete
def trace_buffer_enable(self, name):
self._trace.TraceBufOn(name)
# end trace_buffer_enable
def trace_buffer_disable(self, name):
self._trace.TraceBufOff(name)
# end trace_buffer_disable
def is_trace_buffer_enabled(self, name):
return self._trace.IsTraceBufOn(name)
# end is_trace_buffer_enabled
def trace_buffer_list_get(self):
return self._trace.TraceBufListGet()
# end trace_buffer_list_get
def trace_buffer_size_get(self, name):
return self._trace.TraceBufSizeGet(name)
# end trace_buffer_size_get
def trace_buffer_read(self, name, read_context, count, read_cb):
self._trace.TraceRead(name, read_context, count, read_cb)
# end trace_buffer_read
def trace_buffer_read_done(self, name, context):
self._trace.TraceReadDone(name, context)
# end trace_buffer_read_done
# API to send the trace buffer to the Collector.
# If trace count is not specified/or zero, then the entire trace buffer
# is sent to the Collector.
# [Note] No duplicate trace message sent to the Collector. i.e., If there
# is no trace message added between two consequent calls to this API, then
# no trace message is sent to the Collector.
def send_sandesh_trace_buffer(self, trace_buf, count=0):
trace_req_runner = SandeshTraceRequestRunner(
sandesh=self, request_buffer_name=trace_buf, request_context='',
read_context='Collector', request_count=count)
trace_req_runner.Run()
# end send_sandesh_trace_buffer
# Private functions
def _is_level_ut(self):
return (self._level >= SandeshLevel.UT_START and
self._level <= SandeshLevel.UT_END)
# end _is_level_ut
def _create_task(self):
return gevent.spawn(self._runner.run_for_ever)
# end _create_task
def _process_rx_sandesh(self, rx_sandesh):
handle_request_fn = getattr(rx_sandesh, "handle_request", None)
if callable(handle_request_fn):
handle_request_fn(rx_sandesh)
else:
self._logger.error('Sandesh Request "%s" not implemented' %
(rx_sandesh.__class__.__name__))
# end _process_rx_sandesh
def _create_sandesh_request_and_uve_lists(self, package):
try:
imp_pkg = __import__(package)
except ImportError:
self._logger.error('Failed to import package "%s"' % (package))
else:
try:
pkg_path = imp_pkg.__path__
except AttributeError:
self._logger.error(
'Failed to get package [%s] path' % (package))
return
for importer, mod, ispkg in (
pkgutil.walk_packages(path=pkg_path,
prefix=imp_pkg.__name__ + '.')):
if not ispkg:
module = mod.rsplit('.', 1)[-1]
if 'ttypes' == module:
self._logger.debug(
'Add Sandesh requests in module "%s"' % (mod))
self._add_sandesh_request(mod)
self._logger.debug(
'Add Sandesh UVEs in module "%s"' % (mod))
self._add_sandesh_uve(mod)
self._logger.debug(
'Add Sandesh Alarms in module "%s"' % (mod))
self._add_sandesh_alarm(mod)
# end _create_sandesh_request_and_uve_lists
def _add_sandesh_request(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
try:
sandesh_req_list = getattr(imp_module, '_SANDESH_REQUEST_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh request list' % (mod))
else:
# Add sandesh requests to the dictionary.
for req in sandesh_req_list:
self._sandesh_request_map[req.__name__] = req
# end _add_sandesh_request
def _get_sandesh_uve_list(self, imp_module):
try:
sandesh_uve_list = getattr(imp_module, '_SANDESH_UVE_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh UVE list' %
(imp_module.__name__))
return None
else:
return sandesh_uve_list
# end _get_sandesh_uve_list
def _add_sandesh_uve(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
sandesh_uve_list = self._get_sandesh_uve_list(imp_module)
if not sandesh_uve_list:
return
# Register sandesh UVEs
for uve_type, uve_data_type in sandesh_uve_list:
SandeshUVEPerTypeMap(self, SandeshType.UVE,
uve_type, uve_data_type)
# end _add_sandesh_uve
def _get_sandesh_alarm_list(self, imp_module):
try:
sandesh_alarm_list = getattr(imp_module, '_SANDESH_ALARM_LIST')
except AttributeError:
self._logger.error(
'"%s" module does not have sandesh Alarm list' %
(imp_module.__name__))
return None
else:
return sandesh_alarm_list
# end _get_sandesh_alarm_list
def _add_sandesh_alarm(self, mod):
try:
imp_module = importlib.import_module(mod)
except ImportError:
self._logger.error('Failed to import Module "%s"' % (mod))
else:
sandesh_alarm_list = self._get_sandesh_alarm_list(imp_module)
if not sandesh_alarm_list:
return
# Register sandesh Alarms
for alarm_type, alarm_data_type in sandesh_alarm_list:
SandeshUVEPerTypeMap(self, SandeshType.ALARM, alarm_type,
alarm_data_type)
# end _add_sandesh_alarm
def _init_logger(self, module, logger_class=None,
logger_config_file=None):
if not module:
module = 'sandesh'
if logger_class:
self._sandesh_logger = (sand_logger.create_logger(
module, logger_class,
logger_config_file=logger_config_file))
else:
self._sandesh_logger = sand_logger.SandeshLogger(
module, logger_config_file=logger_config_file)
self._logger = self._sandesh_logger.logger()
class QMaster(threading.Thread):
def __init__(self, project, port, log_freq=600): # 600 seconds
"""Initialize the QMaster
Parameters
----------
project :
port : int
log_freq : int, optional
frequency to print info about the status of the work queue.
In units of seconds. Default is to print every 10 minutes.
"""
threading.Thread.__init__(self)
self.project = project
self.log_freq = log_freq # print time in seconds
self.wake_freq = 1 # seconds
self.wq = WorkQueue(port, name='MSMAccelerator', catalog=True, exclusive=False)
logger.info('WORK QUEUE MASTER LISTENING ON PORT: %d', self.wq.port)
logger.info('(Start a local worker with >> work_queue_worker -d all localhost %d & )', self.wq.port)
# method controls whether or not we need to bring back solvated_xtc as well
if self.project.method == 'explicit':
self.return_wet_xtc = True
elif self.project.method == 'implicit':
self.return_wet_xtc = False
else:
raise Exception("project.method must be 'explicit' or 'implicit'")
logger.info('Return wet xtc set to %s', self.return_wet_xtc)
# what does this specify algorithm do?
self.wq.specify_algorithm(WORK_QUEUE_SCHEDULE_FCFS)
# fast abort kills jobs that appear to be stragling (taking more than 1.5x average)
#self.wq.activate_fast_abort(1.5)
# setting the stop event signals for the thread to die
self._stop = threading.Event()
# the thread sets the event every time a job returns or there are no waiting jobs
# and it finished post processing. See the wait method
self._mainloop_wake_event_cause = None
self._mainloop_wake_event = threading.Event()
# start the thread
self.start()
def run(self):
"""Main thread-loop for the QMaster thread"""
last_print = time.time()
while True:
time.sleep(self.wake_freq)
if not self.wq.empty():
t = self.wq.wait(self.wake_freq)
if t:
if t.return_status != 0:
logger.error('Worker returned nonzero exit status for job: %d', t.return_status)
else:
self.on_return(t)
self._mainloop_wake_event_cause = 'job returned'
self._mainloop_wake_event.set()
if self.wq.stats.tasks_waiting == 0 and not self._mainloop_wake_event.is_set():
self._mainloop_wake_event_cause = 'queue empty'
self._mainloop_wake_event.set() # also set the event if there are no tasks in the queue
if self._stop.is_set():
logger.info('Recieved stop signal. Shutting down all workers')
self.wq.shutdown_workers(0) # 0 indicates to shut all of them down
sys.exit(0)
if time.time() - last_print > self.log_freq:
logger.info('workers initialized: %d, ready: %d, busy: %d', self.wq.stats.workers_init, self.wq.stats.workers_ready, self.wq.stats.workers_busy)
logger.info('workers running: %d, waiting: %d, complete: %d', self.wq.stats.tasks_running, self.wq.stats.tasks_waiting, self.wq.stats.tasks_complete)
last_print = time.time()
def num_jobs_waiting(self):
"""Number of jobs waiting to be sent out
This number should be kept at 1, and when it drops to zero a new job
should be generated.
Returns
-------
n : int
The number
"""
return self.wq.stats.tasks_waiting
def num_jobs_in_queue(self):
"""Get the number of jobs currently in the work queue
This includes both the jobs running remotely and the ones waiting
here
Returns
-------
n : int
The number
"""
return self.wq.stats.tasks_running + self.wq.stats.tasks_waiting
def stop(self):
"""Signal the Qmaster thread to stop"""
self._stop.set()
def wait(self):
"""Block until some sort of action happens in the main-thread loop.
This call will return either when a job as returned from the workers,
or when the queue is empty (last job in the local queue has been sent
out)
Returns
-------
wakeup_cause : str
Either 'job returned' or 'queue empty', depending on the reason
"""
self._mainloop_wake_event.wait()
self._mainloop_wake_event.clear()
cause = self._mainloop_wake_event_cause
if not cause in ['job returned', 'queue empty']:
raise Exception('Bad wakeup cause')
return cause
@with_db_lock
def submit(self, traj):
""" Submit a job to the work-queue for further sampling.
Parameters
----------
"""
if traj.submit_time is not None:
raise ValueError("This traj has already been submitted")
Session.add(traj)
Session.flush()
traj.populate_default_filenames()
if not hasattr(traj, 'init_pdb'):
raise ValueError('Traj is supposed to have a pdb object tacked on')
save_file(traj.init_pdb_fn, traj.init_pdb)
remote_driver_fn = os.path.split(str(traj.forcefield.driver))[1]
remote_pdb_fn = 'input.pdb'
remote_output_fn = 'production_dry{}'.format(traj.forcefield.output_extension)
if traj.mode is None or traj.forcefield is None:
raise ValueError('malformed traj')
task = Task('chmod +x ./{driver}; ./{driver} {pdb_fn} {ff} {water} {mode} {threads}'.format(
pdb_fn=remote_pdb_fn,
mode=traj.mode,
driver=remote_driver_fn,
ff=traj.forcefield.name,
water=traj.forcefield.water,
threads=traj.forcefield.threads))
#why does traj.forcefield.driver come out as unicode?
task.specify_input_file(str(traj.forcefield.driver), remote_driver_fn)
task.specify_output_file(traj.wqlog_fn, 'logs/driver.log')
task.specify_input_file(traj.init_pdb_fn, remote_pdb_fn)
task.specify_output_file(traj.dry_xtc_fn, remote_output_fn)
if self.return_wet_xtc:
# this is the XTC file with waters, generated by the driver
# when you're doing implicit solvent only, this stuff is not used.
remote_wet_output_fn = 'production_wet{}'.format(traj.forcefield.output_extension)
task.specify_output_file(traj.wet_xtc_fn, remote_wet_output_fn)
task.specify_output_file(traj.last_wet_snapshot_fn, 'last_wet_snapshot.pdb')
else:
logger.debug('Not requesting production_wet%s from driver (implicit)', traj.forcefield.output_extension)
task.specify_tag(str(traj.id))
task.specify_algorithm(WORK_QUEUE_SCHEDULE_FILES) # what does this do?
traj.submit_time = datetime.now()
self.wq.submit(task)
logger.info('Submitted to queue: %s', traj)
@with_db_lock
def on_return(self, task):
"""Called by main thread on the return of data from the workers.
Post-processing"""
logger.info('Retrieved task %s', task.tag)
traj = Session.query(models.Trajectory).get(int(task.tag))
try:
# save lh5 version of the trajectory
conf = load_file(self.project.pdb_topology_file)
coordinates = msmbuilder.Trajectory.load_trajectory_file(str(traj.dry_xtc_fn), Conf=conf)
save_file(traj.lh5_fn, coordinates)
except Exception as e:
logger.error('When postprocessing %s, convert to lh5 failed!', traj)
logger.exception(e)
raise
# convert last_wet_snapshot to lh5
pdb_to_lh5(traj, 'last_wet_snapshot_fn')
pdb_to_lh5(traj, 'init_pdb_fn')
traj.host = task.host
traj.returned_time = datetime.now()
traj.length = len(coordinates)
logger.info('Finished converting new traj to lh5 sucessfully')
""" Python-WorkQueue test """
from work_queue import Task, WorkQueue, set_debug_flag
from work_queue import WORK_QUEUE_SCHEDULE_FCFS, WORK_QUEUE_SCHEDULE_FILES
from work_queue import WORK_QUEUE_RANDOM_PORT
from work_queue import WORK_QUEUE_OUTPUT
#from workqueue import WORK_QUEUE_MASTER_MODE_STANDALONE, WORK_QUEUE_WORKER_MODE_SHARED
import os
import sys
import time
set_debug_flag('debug')
set_debug_flag('wq')
wq = WorkQueue(WORK_QUEUE_RANDOM_PORT, name='workqueue_example', catalog=False, exclusive=False)
os.system('work_queue_worker -d all localhost %d &' % wq.port)
print wq.name
wq.specify_algorithm(WORK_QUEUE_SCHEDULE_FCFS)
#wq.specify_name('workqueue_example')
#wq.specify_master_mode(WORK_QUEUE_MASTER_MODE_STANDALONE)
#wq.specify_worker_mode(WORK_QUEUE_WORKER_MODE_SHARED)
if wq.empty():
print 'work queue is empty'
outputs = []
for i in range(5):
def __init__(self, connection, logger, primary_collector,
secondary_collector):
def _on_idle(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# Reset active and backup collector
self._active_collector = self._connection.primary_collector()
self._backup_collector = self._connection.secondary_collector()
# clean up existing connection
e.sm._delete_session()
e.sm._start_idle_hold_timer()
#end _on_idle
def _on_disconnect(e):
pass
#end _on_disconnect
def _on_connect(e):
if e.sm._idle_hold_timer is not None:
e.sm._cancel_idle_hold_timer()
e.sm._connection.reset_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._active_collector is not None:
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event = Event._EV_COLLECTOR_UNKNOWN))
#end _on_connect
def _on_connect_to_backup(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# clean up existing connection
e.sm._delete_session()
# try to connect to the backup collector, if known
if e.sm._backup_collector is not None:
e.sm._active_collector, e.sm._backup_collector = \
e.sm._backup_collector, e.sm._active_collector
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event = Event._EV_BACKUP_COLLECTOR_UNKNOWN))
#end _on_connect_to_backup
def _on_client_init(e):
e.sm._connects += 1
gevent.spawn(e.sm._session.read)
e.sm._connection.handle_initialized(e.sm._connects)
e.sm._connection.sandesh_instance().send_generator_info()
#end _on_client_init
def _on_established(e):
e.sm._cancel_connect_timer()
e.sm._connection.set_collector(e.sm_event.source)
e.sm._connection.handle_sandesh_ctrl_msg(e.sm_event.msg)
self._connection.sandesh_instance().send_generator_info()
#end _on_established
# FSM - Fysom
self._fsm = Fysom({
'initial': {'state' : State._IDLE,
'event' : Event._EV_START,
'defer' : True
},
'events': [
# _IDLE
{'name' : Event._EV_IDLE_HOLD_TIMER_EXPIRED,
'src' : State._IDLE,
'dst' : State._CONNECT
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._IDLE,
'dst' : State._CONNECT
},
# _DISCONNECT
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._DISCONNECT,
'dst' : State._CONNECT
},
# _CONNECT
{'name' : Event._EV_COLLECTOR_UNKNOWN,
'src' : State._CONNECT,
'dst' : State._DISCONNECT
},
{'name' : Event._EV_TCP_CONNECT_FAIL,
'src' : State._CONNECT,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CONNECT,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CONNECT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECTED,
'src' : State._CONNECT,
'dst' : State._CLIENT_INIT
},
# _CONNECT_TO_BACKUP
{'name' : Event._EV_BACKUP_COLLECTOR_UNKNOWN,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECT_FAIL,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECTED,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._CLIENT_INIT
},
# _CLIENT_INIT
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CLOSE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_SANDESH_CTRL_MESSAGE_RECV,
'src' : State._CLIENT_INIT,
'dst' : State._ESTABLISHED
},
# _ESTABLISHED
{'name' : Event._EV_TCP_CLOSE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT
}
],
'callbacks': {
'on' + State._IDLE : _on_idle,
'on' + State._CONNECT : _on_connect,
'on' + State._CONNECT_TO_BACKUP : _on_connect_to_backup,
'on' + State._CLIENT_INIT : _on_client_init,
'on' + State._ESTABLISHED : _on_established,
}
})
self._connection = connection
self._session = None
self._connects = 0
self._idle_hold_timer = None
self._connect_timer = None
self._active_collector = primary_collector
self._backup_collector = secondary_collector
self._logger = logger
self._event_queue = WorkQueue(self._dequeue_event,
self._is_ready_to_dequeue_event)
def WorkQueueSubmitThread(task_queue=multiprocessing.Queue(),
queue_lock=threading.Lock(),
launch_cmd=None,
env=None,
collector_queue=multiprocessing.Queue(),
see_worker_output=False,
data_dir=".",
full=False,
cancel_value=multiprocessing.Value('i', 1),
port=WORK_QUEUE_DEFAULT_PORT,
wq_log_dir=None,
project_password=None,
project_password_file=None,
project_name=None):
"""Thread to handle Parsl app submissions to the Work Queue objects.
Takes in Parsl functions submitted using submit(), and creates a
Work Queue task with the appropriate specifications, which is then
submitted to Work Queue. After tasks are completed, processes the
exit status and exit code of the task, and sends results to the
Work Queue collector thread.
"""
logger.debug("Starting WorkQueue Submit/Wait Process")
# Enable debugging flags and create logging file
if wq_log_dir is not None:
logger.debug("Setting debugging flags and creating logging file")
wq_debug_log = os.path.join(wq_log_dir, "debug_log")
cctools_debug_flags_set("all")
cctools_debug_config_file(wq_debug_log)
# Create WorkQueue queue object
logger.debug("Creating WorkQueue Object")
try:
logger.debug("Listening on port {}".format(port))
q = WorkQueue(port)
except Exception as e:
logger.error("Unable to create WorkQueue object: {}".format(e))
raise e
# Specify WorkQueue queue attributes
if project_name:
q.specify_name(project_name)
if project_password:
q.specify_password(project_password)
elif project_password_file:
q.specify_password_file(project_password_file)
# Only write logs when the wq_log_dir is specified, which it most likely will be
if wq_log_dir is not None:
wq_master_log = os.path.join(wq_log_dir, "master_log")
wq_trans_log = os.path.join(wq_log_dir, "transaction_log")
if full:
wq_resource_log = os.path.join(wq_log_dir, "resource_logs")
q.enable_monitoring_full(dirname=wq_resource_log)
q.specify_log(wq_master_log)
q.specify_transactions_log(wq_trans_log)
wq_tasks = set()
orig_ppid = os.getppid()
continue_running = True
while (continue_running):
# Monitor the task queue
ppid = os.getppid()
if ppid != orig_ppid:
logger.debug("new Process")
continue_running = False
continue
# Submit tasks
while task_queue.qsize() > 0:
if cancel_value.value == 0:
logger.debug("cancel value set to cancel")
continue_running = False
break
# Obtain task from task_queue
try:
item = task_queue.get(timeout=1)
logger.debug("Removing task from queue")
except queue.Empty:
continue
parsl_id = item["task_id"]
# Extract information about the task
function_data_loc = item["data_loc"]
function_data_loc_remote = function_data_loc.split("/")[-1]
function_result_loc = item["result_loc"]
function_result_loc_remote = function_result_loc.split("/")[-1]
input_files = item["input_files"]
output_files = item["output_files"]
std_files = item["std_files"]
full_script_name = workqueue_worker.__file__
script_name = full_script_name.split("/")[-1]
remapping_string = ""
std_string = ""
# Parse input file information
logger.debug("Looking at input")
for item in input_files:
if item[3] == "std":
std_string += "mv " + item[1] + " " + item[0] + "; "
else:
remapping_string += item[0] + ":" + item[1] + ","
logger.debug(remapping_string)
# Parse output file information
logger.debug("Looking at output")
for item in output_files:
remapping_string += item[0] + ":" + item[1] + ","
logger.debug(remapping_string)
if len(input_files) + len(output_files) > 0:
remapping_string = "-r " + remapping_string
remapping_string = remapping_string[:-1]
# Create command string
logger.debug(launch_cmd)
command_str = launch_cmd.format(
input_file=function_data_loc_remote,
output_file=function_result_loc_remote,
remapping_string=remapping_string)
command_str = std_string + command_str
logger.debug(command_str)
# Create WorkQueue task for the command
logger.debug("Sending task {} with command: {}".format(
parsl_id, command_str))
try:
t = Task(command_str)
except Exception as e:
logger.error("Unable to create task: {}".format(e))
continue
# Specify environment variables for the task
if env is not None:
for var in env:
t.specify_environment_variable(var, env[var])
# Specify script, and data/result files for task
t.specify_file(full_script_name,
script_name,
WORK_QUEUE_INPUT,
cache=True)
t.specify_file(function_data_loc,
function_data_loc_remote,
WORK_QUEUE_INPUT,
cache=False)
t.specify_file(function_result_loc,
function_result_loc_remote,
WORK_QUEUE_OUTPUT,
cache=False)
t.specify_tag(str(parsl_id))
logger.debug("Parsl ID: {}".format(t.id))
# Specify all input/output files for task
for item in input_files:
t.specify_file(item[0],
item[1],
WORK_QUEUE_INPUT,
cache=item[2])
for item in output_files:
t.specify_file(item[0],
item[1],
WORK_QUEUE_OUTPUT,
cache=item[2])
for item in std_files:
t.specify_file(item[0],
item[1],
WORK_QUEUE_OUTPUT,
cache=item[2])
# Submit the task to the WorkQueue object
logger.debug("Submitting task {} to WorkQueue".format(parsl_id))
try:
wq_id = q.submit(t)
wq_tasks.add(wq_id)
except Exception as e:
logger.error("Unable to create task: {}".format(e))
msg = {
"tid": parsl_id,
"result_received": False,
"reason": "Workqueue Task Start Failure",
"status": 1
}
collector_queue.put_nowait(msg)
continue
logger.debug("Task {} submitted to WorkQueue with id {}".format(
parsl_id, wq_id))
if cancel_value.value == 0:
continue_running = False
# If the queue is not empty wait on the WorkQueue queue for a task
task_found = True
if not q.empty() and continue_running:
while task_found is True:
if cancel_value.value == 0:
continue_running = False
task_found = False
continue
# Obtain the task from the queue
t = q.wait(1)
if t is None:
task_found = False
continue
else:
parsl_tid = t.tag
logger.debug(
"Completed WorkQueue task {}, parsl task {}".format(
t.id, parsl_tid))
status = t.return_status
task_result = t.result
msg = None
# Task failure
if status != 0 or (task_result != WORK_QUEUE_RESULT_SUCCESS
and task_result !=
WORK_QUEUE_RESULT_OUTPUT_MISSING):
logger.debug(
"Wrapper Script status: {}\nWorkQueue Status: {}".
format(status, task_result))
# Wrapper script failure
if status != 0:
logger.debug(
"WorkQueue task {} failed with status {}".
format(t.id, status))
reason = "Wrapper Script Failure: "
if status == 1:
reason += "problem parsing command line options"
elif status == 2:
reason += "problem loading function data"
elif status == 3:
reason += "problem remapping file names"
elif status == 4:
reason += "problem writing out function result"
else:
reason += "unable to process wrapper script failure with status = {}".format(
status)
reason += "\nTrace:\n" + str(t.output)
logger.debug(
"WorkQueue runner script failed for task {} because {}\n"
.format(parsl_tid, reason))
# WorkQueue system failure
else:
reason = "WorkQueue System Failure: "
if task_result == 1:
reason += "missing input file"
elif task_result == 2:
reason += "unable to generate output file"
elif task_result == 4:
reason += "stdout has been truncated"
elif task_result == 1 << 3:
reason += "task terminated with a signal"
elif task_result == 2 << 3:
reason += "task used more resources than requested"
elif task_result == 3 << 3:
reason += "task ran past the specified end time"
elif task_result == 4 << 3:
reason += "result could not be classified"
elif task_result == 5 << 3:
reason += "task failed, but not a task error"
elif task_result == 6 << 3:
reason += "unable to complete after specified number of retries"
elif task_result == 7 << 3:
reason += "task ran for more than the specified time"
elif task_result == 8 << 3:
reason += "task needed more space to complete task"
else:
reason += "unable to process Work Queue system failure"
msg = {
"tid": parsl_tid,
"result_received": False,
"reason": reason,
"status": status
}
collector_queue.put_nowait(msg)
# Task Success
else:
# Print the output from the task
if see_worker_output:
print(t.output)
# Load result into result file
result_loc = os.path.join(
data_dir,
"task_" + str(parsl_tid) + "_function_result")
logger.debug(
"Looking for result in {}".format(result_loc))
f = open(result_loc, "rb")
result = pickle.load(f)
f.close()
msg = {
"tid": parsl_tid,
"result_received": True,
"result": result
}
wq_tasks.remove(t.id)
collector_queue.put_nowait(msg)
if continue_running is False:
logger.debug("Exiting WorkQueue Master Thread event loop")
break
# Remove all WorkQueue tasks that remain in the queue object
for wq_task in wq_tasks:
logger.debug("Cancelling WorkQueue Task {}".format(wq_task))
q.cancel_by_taskid(wq_task)
logger.debug("Exiting WorkQueue Monitoring Process")
return 0
class SandeshSession(TcpSession):
_KEEPALIVE_IDLE_TIME = 45 # in secs
_KEEPALIVE_INTERVAL = 3 # in secs
_KEEPALIVE_PROBES = 5
def __init__(self, sandesh_instance, server, event_handler, sandesh_msg_handler):
self._sandesh_instance = sandesh_instance
self._logger = sandesh_instance._logger
self._event_handler = event_handler
self._reader = SandeshReader(self, sandesh_msg_handler)
self._writer = SandeshWriter(self)
self._send_queue = WorkQueue(self._send_sandesh, self._is_ready_to_send_sandesh)
TcpSession.__init__(self, server)
# end __init__
# Public functions
def sandesh_instance(self):
return self._sandesh_instance
# end sandesh_instance
def is_send_queue_empty(self):
return self._send_queue.is_queue_empty()
# end is_send_queue_empty
def is_connected(self):
return self._connected
# end is_connected
def enqueue_sandesh(self, sandesh):
self._send_queue.enqueue(sandesh)
# end enqueue_sandesh
def send_queue(self):
return self._send_queue
# end send_queue
# Overloaded functions from TcpSession
def connect(self):
TcpSession.connect(self, timeout=5)
# end connect
def _on_read(self, buf):
if self._reader.read_msg(buf) < 0:
self._logger.error("SandeshReader Error. Close Collector session")
self.close()
# end _on_read
def _handle_event(self, event):
self._event_handler(self, event)
# end _handle_event
def _set_socket_options(self):
self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
if hasattr(socket, "TCP_KEEPIDLE"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, self._KEEPALIVE_IDLE_TIME)
if hasattr(socket, "TCP_KEEPALIVE"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPALIVE, self._KEEPALIVE_IDLE_TIME)
if hasattr(socket, "TCP_KEEPINTVL"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, self._KEEPALIVE_INTERVAL)
if hasattr(socket, "TCP_KEEPCNT"):
self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, self._KEEPALIVE_PROBES)
# end _set_socket_options
# Private functions
def _send_sandesh(self, sandesh):
if self._send_queue.is_queue_empty():
more = False
else:
more = True
if not self._connected:
self._logger.log(SandeshLogger.get_py_logger_level(sandesh.level()), sandesh.log())
return
if sandesh.is_logging_allowed(self._sandesh_instance):
self._logger.log(SandeshLogger.get_py_logger_level(sandesh.level()), sandesh.log())
self._writer.send_msg(sandesh, more)
# end _send_sandesh
def _is_ready_to_send_sandesh(self):
return self._sandesh_instance.is_send_queue_enabled()
def work_queue_main(items, function, accumulator, **kwargs):
"""Execute using Work Queue
For valid parameters, see :py:func:`work_queue_executor` in :py:mod:`executor`.
For more information, see :ref:`intro-coffea-wq`
"""
global _wq_queue
_check_dynamic_chunksize_targets(kwargs["dynamic_chunksize"])
clevel = kwargs["compression"]
if clevel is not None:
function = _compression_wrapper(clevel, function)
accumulate_fn = _compression_wrapper(clevel, accumulate_result_files)
else:
accumulate_fn = accumulate_result_files
_vprint.verbose_mode = kwargs["verbose"] or kwargs["print_stdout"]
_vprint.status_mode = kwargs["status"]
if not kwargs["port"]:
kwargs["port"] = 0 if kwargs["master_name"] else 9123
if kwargs["environment_file"] and not kwargs["wrapper"]:
raise ValueError(
"Location of python_package_run could not be determined automatically.\nUse 'wrapper' argument to the work_queue_executor."
)
if _wq_queue is None:
_wq_queue = WorkQueue(
port=kwargs["port"],
name=kwargs["master_name"],
debug_log=kwargs["debug_log"],
stats_log=kwargs["stats_log"],
transactions_log=kwargs["transactions_log"],
)
# Make use of the stored password file, if enabled.
if kwargs["password_file"] is not None:
_wq_queue.specify_password_file(kwargs["password_file"])
print("Listening for work queue workers on port {}...".format(_wq_queue.port))
# perform a wait to print any warnings before progress bars
_wq_queue.wait(0)
_declare_resources(kwargs)
# Working within a custom temporary directory:
with tempfile.TemporaryDirectory(
prefix="wq-executor-tmp-", dir=kwargs["filepath"]
) as tmpdir:
fn_wrapper = _create_fn_wrapper(kwargs["x509_proxy"], tmpdir=tmpdir)
infile_function = _function_to_file(
function, prefix_name=kwargs["function_name"], tmpdir=tmpdir
)
infile_accum_fn = _function_to_file(
accumulate_fn, prefix_name="accum", tmpdir=tmpdir
)
if kwargs["custom_init"]:
kwargs["custom_init"](_wq_queue)
if kwargs["desc"] == "Preprocessing":
return _work_queue_preprocessing(
items, accumulator, fn_wrapper, infile_function, tmpdir, kwargs
)
else:
return _work_queue_processing(
items,
accumulator,
fn_wrapper,
infile_function,
infile_accum_fn,
tmpdir,
kwargs,
)
class SandeshStateMachine(object):
_IDLE_HOLD_TIME = 5 # in seconds
_CONNECT_TIME = 30 # in seconds
def __init__(self, connection, logger, primary_collector,
secondary_collector):
def _on_idle(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# Reset active and backup collector
self._active_collector = self._connection.primary_collector()
self._backup_collector = self._connection.secondary_collector()
# clean up existing connection
e.sm._delete_session()
e.sm._start_idle_hold_timer()
#end _on_idle
def _on_disconnect(e):
pass
#end _on_disconnect
def _on_connect(e):
if e.sm._idle_hold_timer is not None:
e.sm._cancel_idle_hold_timer()
e.sm._connection.reset_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._active_collector is not None:
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event = Event._EV_COLLECTOR_UNKNOWN))
#end _on_connect
def _on_connect_to_backup(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# clean up existing connection
e.sm._delete_session()
# try to connect to the backup collector, if known
if e.sm._backup_collector is not None:
e.sm._active_collector, e.sm._backup_collector = \
e.sm._backup_collector, e.sm._active_collector
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event = Event._EV_BACKUP_COLLECTOR_UNKNOWN))
#end _on_connect_to_backup
def _on_client_init(e):
e.sm._connects += 1
gevent.spawn(e.sm._session.read)
e.sm._connection.handle_initialized(e.sm._connects)
e.sm._connection.sandesh_instance().send_generator_info()
#end _on_client_init
def _on_established(e):
e.sm._cancel_connect_timer()
e.sm._connection.set_collector(e.sm_event.source)
e.sm._connection.handle_sandesh_ctrl_msg(e.sm_event.msg)
self._connection.sandesh_instance().send_generator_info()
#end _on_established
# FSM - Fysom
self._fsm = Fysom({
'initial': {'state' : State._IDLE,
'event' : Event._EV_START,
'defer' : True
},
'events': [
# _IDLE
{'name' : Event._EV_IDLE_HOLD_TIMER_EXPIRED,
'src' : State._IDLE,
'dst' : State._CONNECT
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._IDLE,
'dst' : State._CONNECT
},
# _DISCONNECT
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._DISCONNECT,
'dst' : State._CONNECT
},
# _CONNECT
{'name' : Event._EV_COLLECTOR_UNKNOWN,
'src' : State._CONNECT,
'dst' : State._DISCONNECT
},
{'name' : Event._EV_TCP_CONNECT_FAIL,
'src' : State._CONNECT,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CONNECT,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CONNECT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECTED,
'src' : State._CONNECT,
'dst' : State._CLIENT_INIT
},
# _CONNECT_TO_BACKUP
{'name' : Event._EV_BACKUP_COLLECTOR_UNKNOWN,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECT_FAIL,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECTED,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._CLIENT_INIT
},
# _CLIENT_INIT
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CLOSE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_SANDESH_CTRL_MESSAGE_RECV,
'src' : State._CLIENT_INIT,
'dst' : State._ESTABLISHED
},
# _ESTABLISHED
{'name' : Event._EV_TCP_CLOSE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT
}
],
'callbacks': {
'on' + State._IDLE : _on_idle,
'on' + State._CONNECT : _on_connect,
'on' + State._CONNECT_TO_BACKUP : _on_connect_to_backup,
'on' + State._CLIENT_INIT : _on_client_init,
'on' + State._ESTABLISHED : _on_established,
}
})
self._connection = connection
self._session = None
self._connects = 0
self._idle_hold_timer = None
self._connect_timer = None
self._active_collector = primary_collector
self._backup_collector = secondary_collector
self._logger = logger
self._event_queue = WorkQueue(self._dequeue_event,
self._is_ready_to_dequeue_event)
#end __init__
# Public functions
def initialize(self):
self.enqueue_event(Event(event = Event._EV_START))
#end initialize
def session(self):
return self._session
#end session
def state(self):
return self._fsm.current
#end state
def shutdown(self):
self.enqueue_event(Event(event = Event._EV_STOP))
#end shutdown
def set_admin_state(self, down):
if down == True:
self.enqueue_event(Event(event = Event._EV_STOP))
else:
self.enqueue_event(Event(event = Event._EV_START))
#end set_admin_state
def connect_count(self):
return self._connects
#end connect_count
def active_collector(self):
return self._active_collector
#end active_collector
def backup_collector(self):
return self._backup_collector
#end backup_collector
def enqueue_event(self, event):
self._event_queue.enqueue(event)
#end enqueue_event
def on_session_event(self, session, event):
if session is not self._session:
self._logger.error("Ignore session event [%d] received for old session" % (event))
return
if SandeshSession.SESSION_ESTABLISHED == event:
self._logger.info("Session Event: TCP Connected")
self.enqueue_event(Event(event = Event._EV_TCP_CONNECTED,
session = session))
elif SandeshSession.SESSION_ERROR == event:
self._logger.error("Session Event: TCP Connect Fail")
self.enqueue_event(Event(event = Event._EV_TCP_CONNECT_FAIL,
session = session))
elif SandeshSession.SESSION_CLOSE == event:
self._logger.error("Session Event: TCP Connection Closed")
self.enqueue_event(Event(event = Event._EV_TCP_CLOSE,
session = session))
else:
self._logger.error("Received unknown session event [%d]" % (event))
#end on_session_event
def on_sandesh_ctrl_msg_receive(self, session, sandesh_ctrl, collector):
if sandesh_ctrl.success == True:
self.enqueue_event(Event(event = Event._EV_SANDESH_CTRL_MESSAGE_RECV,
session = session,
msg = sandesh_ctrl,
source = collector))
else:
# Negotiation with the Collector failed, reset the
# connection and retry after sometime.
self._logger.error("Negotiation with the Collector %s failed." % (collector))
self._session.close()
#end on_sandesh_ctrl_msg_receive
def on_sandesh_uve_msg_send(self, sandesh_uve):
self.enqueue_event(Event(event = Event._EV_SANDESH_UVE_SEND,
msg = sandesh_uve))
#end on_sandesh_uve_msg_send
# Private functions
def _create_session(self):
assert self._session is None
self._session = SandeshSession(self._connection.sandesh_instance(),
self._active_collector,
self.on_session_event,
self._connection._receive_sandesh_msg)
#end _create_session
def _delete_session(self):
if self._session:
self._session.close()
self._session = None
self._connection.reset_collector()
#end _delete_session
def _start_idle_hold_timer(self):
if self._idle_hold_timer is None:
if self._IDLE_HOLD_TIME:
self._idle_hold_timer = gevent.spawn_later(self._IDLE_HOLD_TIME,
self._idle_hold_timer_expiry_handler)
else:
self.enqueue_event(Event(event = Event._EV_IDLE_HOLD_TIMER_EXPIRED))
#end _start_idle_hold_timer
def _cancel_idle_hold_timer(self):
if self._idle_hold_timer is not None:
gevent.kill(self._idle_hold_timer)
self._idle_hold_timer = None
#end _cancel_idle_hold_timer
def _idle_hold_timer_expiry_handler(self):
self._idle_hold_timer = None
self.enqueue_event(Event(event = Event._EV_IDLE_HOLD_TIMER_EXPIRED))
#end _idle_hold_timer_expiry_handler
def _start_connect_timer(self):
if self._connect_timer is None:
self._connect_timer = gevent.spawn_later(self._CONNECT_TIME,
self._connect_timer_expiry_handler,
self._session)
#end _start_connect_timer
def _cancel_connect_timer(self):
if self._connect_timer is not None:
gevent.kill(self._connect_timer)
self._connect_timer = None
#end _cancel_connect_timer
def _connect_timer_expiry_handler(self, session):
self._connect_timer = None
self.enqueue_event(Event(event = Event._EV_CONNECT_TIMER_EXPIRED,
session = session))
#end _connect_timer_expiry_handler
def _is_ready_to_dequeue_event(self):
return True
#end _is_ready_to_dequeue_event
def _dequeue_event(self, event):
self._logger.info("Processing event[%s] in state[%s]" \
% (event.event, self._fsm.current))
if event.session is not None and event.session is not self._session:
self._logger.info("Ignore event [%s] received for old session" \
% (event.event))
return
if event.event == Event._EV_COLLECTOR_CHANGE:
old_active_collector = self._active_collector
self._active_collector = event.primary_collector
self._backup_collector = event.secondary_collector
if old_active_collector == self._active_collector:
self._logger.info("No change in active collector. Ignore event [%s]" \
% (event.event))
return
if event.event == Event._EV_SANDESH_UVE_SEND:
if self._fsm.current == State._ESTABLISHED or self._fsm.current == State._CLIENT_INIT:
self._connection.handle_sandesh_uve_msg(event.msg)
else:
self._logger.info("Discarding event[%s] in state[%s]" \
% (event.event, self._fsm.current))
elif event.event == Event._EV_SANDESH_CTRL_MESSAGE_RECV and \
self._fsm.current == State._ESTABLISHED:
self._connection.handle_sandesh_ctrl_msg(event.msg)
elif self._fsm.cannot(event.event) is True:
self._logger.info("Unconsumed event[%s] in state[%s]" \
% (event.event, self._fsm.current))
else:
prev_state = self.state()
getattr(self._fsm, event.event)(sm = self, sm_event = event)
# Log state transition
self._logger.info("Sandesh Client: Event[%s] => State[%s] -> State[%s]" \
% (event.event, prev_state, self.state()))
def WorkQueueSubmitThread(task_queue=multiprocessing.Queue(),
queue_lock=threading.Lock(),
launch_cmd=None,
env=None,
collector_queue=multiprocessing.Queue(),
see_worker_output=False,
data_dir=".",
full=False,
cancel_value=multiprocessing.Value('i', 1),
port=WORK_QUEUE_DEFAULT_PORT,
wq_log_dir=None,
project_password=None,
project_password_file=None,
project_name=None):
logger.debug("Starting WorkQueue Submit/Wait Process")
orig_ppid = os.getppid()
wq_tasks = set()
continue_running = True
if wq_log_dir is not None:
wq_debug_log = os.path.join(wq_log_dir, "debug")
cctools_debug_flags_set("all")
cctools_debug_config_file(wq_debug_log)
logger.debug("Creating Workqueue Object")
try:
q = WorkQueue(port)
except Exception as e:
logger.error("Unable to create Workqueue object: {}", format(e))
raise e
if project_name:
q.specify_name(project_name)
if project_password:
q.specify_password(project_password)
elif project_password_file:
q.specify_password_file(project_password_file)
# Only write Logs when the log_dir is specified, which is most likely always will be
if wq_log_dir is not None:
wq_master_log = os.path.join(wq_log_dir, "master_log")
wq_trans_log = os.path.join(wq_log_dir, "transaction_log")
if full:
wq_resource_log = os.path.join(wq_log_dir, "resource_logs")
q.enable_monitoring_full(dirname=wq_resource_log)
q.specify_log(wq_master_log)
q.specify_transactions_log(wq_trans_log)
while (continue_running):
# Monitor the Task Queue
ppid = os.getppid()
if ppid != orig_ppid:
continue_running = False
continue
# Submit Tasks
while task_queue.qsize() > 0:
if cancel_value.value == 0:
continue_running = False
break
try:
# item = task_queue.get_nowait()
item = task_queue.get(timeout=1)
logger.debug("Removing task from queue")
except queue.Empty:
continue
parsl_id = item["task_id"]
function_data_loc = item["data_loc"]
function_result_loc = item["result_loc"]
function_result_loc_remote = function_result_loc.split("/")[-1]
function_data_loc_remote = function_data_loc.split("/")[-1]
input_files = item["input_files"]
output_files = item["output_files"]
std_files = item["std_files"]
full_script_name = workqueue_worker.__file__
script_name = full_script_name.split("/")[-1]
remapping_string = ""
std_string = ""
logger.debug("looking at input")
for item in input_files:
if item[3] == "std":
std_string += "mv " + item[1] + " " + item[0] + "; "
else:
remapping_string += item[0] + ":" + item[1] + ","
logger.debug(remapping_string)
logger.debug("looking at output")
for item in output_files:
remapping_string += item[0] + ":" + item[1] + ","
logger.debug(remapping_string)
if len(input_files) + len(output_files) > 0:
remapping_string = "-r " + remapping_string
remapping_string = remapping_string[:-1]
logger.debug(launch_cmd)
command_str = launch_cmd.format(
input_file=function_data_loc_remote,
output_file=function_result_loc_remote,
remapping_string=remapping_string)
logger.debug(command_str)
command_str = std_string + command_str
logger.debug(command_str)
logger.debug("Sending task {} with command: {}".format(
parsl_id, command_str))
try:
t = Task(command_str)
except Exception as e:
logger.error("Unable to create task: {}".format(e))
continue
if env is not None:
for var in env:
t.specify_environment_variable(var, env[var])
t.specify_file(full_script_name,
script_name,
WORK_QUEUE_INPUT,
cache=True)
t.specify_file(function_result_loc,
function_result_loc_remote,
WORK_QUEUE_OUTPUT,
cache=False)
t.specify_file(function_data_loc,
function_data_loc_remote,
WORK_QUEUE_INPUT,
cache=False)
t.specify_tag(str(parsl_id))
for item in input_files:
t.specify_file(item[0],
item[1],
WORK_QUEUE_INPUT,
cache=item[2])
for item in output_files:
t.specify_file(item[0],
item[1],
WORK_QUEUE_OUTPUT,
cache=item[2])
for item in std_files:
t.specify_file(item[0],
item[1],
WORK_QUEUE_OUTPUT,
cache=item[2])
logger.debug("Submitting task {} to workqueue".format(parsl_id))
try:
wq_id = q.submit(t)
wq_tasks.add(wq_id)
except Exception as e:
logger.error("Unable to create task: {}".format(e))
msg = {
"tid": parsl_id,
"result_received": False,
"reason": "Workqueue Task Start Failure",
"status": 1
}
collector_queue.put_nowait(msg)
continue
logger.debug("Task {} submitted workqueue with id {}".format(
parsl_id, wq_id))
if cancel_value.value == 0:
continue_running = False
# Wait for Tasks
task_found = True
# If the queue is not empty wait on the workqueue queue for a task
if not q.empty() and continue_running:
while task_found is True:
if cancel_value.value == 0:
continue_running = False
task_found = False
continue
t = q.wait(1)
if t is None:
task_found = False
continue
else:
parsl_tid = t.tag
logger.debug(
"Completed workqueue task {}, parsl task {}".format(
t.id, parsl_tid))
status = t.return_status
task_result = t.result
msg = None
if status != 0 or (task_result != WORK_QUEUE_RESULT_SUCCESS
and task_result !=
WORK_QUEUE_RESULT_OUTPUT_MISSING):
if task_result == WORK_QUEUE_RESULT_SUCCESS:
logger.debug(
"Workqueue task {} failed with status {}".
format(t.id, status))
reason = "Wrapper Script Failure: "
if status == 1:
reason += "command line parsing"
if status == 2:
reason += "problem loading function data"
if status == 3:
reason += "problem remapping file names"
if status == 4:
reason += "problem writing out function result"
reason += "\nTrace:\n" + t.output
logger.debug(
"Workqueue runner script failed for task {} because {}\n"
.format(parsl_tid, reason))
else:
reason = "Workqueue system failure\n"
msg = {
"tid": parsl_tid,
"result_received": False,
"reason": reason,
"status": status
}
collector_queue.put_nowait(msg)
else:
if see_worker_output:
print(t.output)
result_loc = os.path.join(
data_dir,
"task_" + str(parsl_tid) + "_function_result")
logger.debug(
"Looking for result in {}".format(result_loc))
f = open(result_loc, "rb")
result = pickle.load(f)
f.close()
msg = {
"tid": parsl_tid,
"result_received": True,
"result": result
}
wq_tasks.remove(t.id)
collector_queue.put_nowait(msg)
if continue_running is False:
logger.debug("Exiting WorkQueue Master Thread event loop")
break
for wq_task in wq_tasks:
logger.debug("Cancelling Workqueue Task {}".format(wq_task))
q.cancel_by_taskid(wq_task)
logger.debug("Exiting WorkQueue Monitoring Process")
return 0
def _work_queue_submit_wait(task_queue=multiprocessing.Queue(),
launch_cmd=None,
env=None,
collector_queue=multiprocessing.Queue(),
data_dir=".",
full=False,
shared_fs=False,
autolabel=False,
autolabel_window=None,
autocategory=False,
should_stop=None,
port=WORK_QUEUE_DEFAULT_PORT,
wq_log_dir=None,
project_password_file=None,
project_name=None):
"""Thread to handle Parsl app submissions to the Work Queue objects.
Takes in Parsl functions submitted using submit(), and creates a
Work Queue task with the appropriate specifications, which is then
submitted to Work Queue. After tasks are completed, processes the
exit status and exit code of the task, and sends results to the
Work Queue collector thread.
To avoid python's global interpreter lock with work queue's wait, this
function should be launched as a process, not as a lightweight thread. This
means that any communication should be done using the multiprocessing
module capabilities, rather than shared memory.
"""
logger.debug("Starting WorkQueue Submit/Wait Process")
# Enable debugging flags and create logging file
wq_debug_log = None
if wq_log_dir is not None:
logger.debug("Setting debugging flags and creating logging file")
wq_debug_log = os.path.join(wq_log_dir, "debug_log")
# Create WorkQueue queue object
logger.debug("Creating WorkQueue Object")
try:
logger.debug("Listening on port {}".format(port))
q = WorkQueue(port, debug_log=wq_debug_log)
except Exception as e:
logger.error("Unable to create WorkQueue object: {}".format(e))
raise e
# Specify WorkQueue queue attributes
if project_name:
q.specify_name(project_name)
if project_password_file:
q.specify_password_file(project_password_file)
if autolabel:
q.enable_monitoring()
if autolabel_window is not None:
q.tune('category-steady-n-tasks', autolabel_window)
# Only write logs when the wq_log_dir is specified, which it most likely will be
if wq_log_dir is not None:
wq_master_log = os.path.join(wq_log_dir, "master_log")
wq_trans_log = os.path.join(wq_log_dir, "transaction_log")
if full:
wq_resource_log = os.path.join(wq_log_dir, "resource_logs")
q.enable_monitoring_full(dirname=wq_resource_log)
q.specify_log(wq_master_log)
q.specify_transactions_log(wq_trans_log)
orig_ppid = os.getppid()
result_file_of_task_id = {
} # Mapping taskid -> result file for active tasks.
while not should_stop.value:
# Monitor the task queue
ppid = os.getppid()
if ppid != orig_ppid:
logger.debug("new Process")
break
# Submit tasks
while task_queue.qsize() > 0 and not should_stop.value:
# Obtain task from task_queue
try:
task = task_queue.get(timeout=1)
logger.debug("Removing task from queue")
except queue.Empty:
continue
pkg_pfx = ""
if task.env_pkg is not None:
pkg_pfx = "./{} -e {} ".format(
os.path.basename(package_run_script),
os.path.basename(task.env_pkg))
# Create command string
logger.debug(launch_cmd)
command_str = launch_cmd.format(
package_prefix=pkg_pfx,
mapping=os.path.basename(task.map_file),
function=os.path.basename(task.function_file),
result=os.path.basename(task.result_file))
logger.debug(command_str)
# Create WorkQueue task for the command
logger.debug("Sending task {} with command: {}".format(
task.id, command_str))
try:
t = Task(command_str)
except Exception as e:
logger.error("Unable to create task: {}".format(e))
collector_queue.put_nowait(
WqTaskToParsl(
id=task.id,
result_received=False,
result=None,
reason="task could not be created by work queue",
status=-1))
continue
t.specify_category(task.category)
if autolabel:
q.specify_category_mode(
task.category, WORK_QUEUE_ALLOCATION_MODE_MAX_THROUGHPUT)
# Specify environment variables for the task
if env is not None:
for var in env:
t.specify_environment_variable(var, env[var])
if task.env_pkg is not None:
t.specify_input_file(package_run_script, cache=True)
t.specify_input_file(task.env_pkg, cache=True)
# Specify script, and data/result files for task
t.specify_input_file(exec_parsl_function.__file__, cache=True)
t.specify_input_file(task.function_file, cache=False)
t.specify_input_file(task.map_file, cache=False)
t.specify_output_file(task.result_file, cache=False)
t.specify_tag(str(task.id))
result_file_of_task_id[str(task.id)] = task.result_file
logger.debug("Parsl ID: {}".format(task.id))
# Specify input/output files that need to be staged.
# Absolute paths are assumed to be in shared filesystem, and thus
# not staged by work queue.
if not shared_fs:
for spec in task.input_files:
if spec.stage:
t.specify_input_file(spec.parsl_name,
spec.parsl_name,
cache=spec.cache)
for spec in task.output_files:
if spec.stage:
t.specify_output_file(spec.parsl_name,
spec.parsl_name,
cache=spec.cache)
# Submit the task to the WorkQueue object
logger.debug("Submitting task {} to WorkQueue".format(task.id))
try:
wq_id = q.submit(t)
except Exception as e:
logger.error(
"Unable to submit task to work queue: {}".format(e))
collector_queue.put_nowait(
WqTaskToParsl(
id=task.id,
result_received=False,
result=None,
reason="task could not be submited to work queue",
status=-1))
continue
logger.debug("Task {} submitted to WorkQueue with id {}".format(
task.id, wq_id))
# If the queue is not empty wait on the WorkQueue queue for a task
task_found = True
if not q.empty():
while task_found and not should_stop.value:
# Obtain the task from the queue
t = q.wait(1)
if t is None:
task_found = False
continue
# When a task is found:
parsl_id = t.tag
logger.debug(
"Completed WorkQueue task {}, parsl task {}".format(
t.id, t.tag))
result_file = result_file_of_task_id.pop(t.tag)
# A tasks completes 'succesfully' if it has result file,
# and it can be loaded. This may mean that the 'success' is
# an exception.
logger.debug("Looking for result in {}".format(result_file))
try:
with open(result_file, "rb") as f_in:
result = pickle.load(f_in)
logger.debug("Found result in {}".format(result_file))
collector_queue.put_nowait(
WqTaskToParsl(id=parsl_id,
result_received=True,
result=result,
reason=None,
status=t.return_status))
# If a result file could not be generated, explain the
# failure according to work queue error codes. We generate
# an exception and wrap it with RemoteExceptionWrapper, to
# match the positive case.
except Exception as e:
reason = _explain_work_queue_result(t)
logger.debug(
"Did not find result in {}".format(result_file))
logger.debug(
"Wrapper Script status: {}\nWorkQueue Status: {}".
format(t.return_status, t.result))
logger.debug(
"Task with id parsl {} / wq {} failed because:\n{}".
format(parsl_id, t.id, reason))
collector_queue.put_nowait(
WqTaskToParsl(id=parsl_id,
result_received=False,
result=e,
reason=reason,
status=t.return_status))
logger.debug("Exiting WorkQueue Monitoring Process")
return 0
def __init__(self, connection, logger, primary_collector,
secondary_collector):
def _update_connection_state(e, status):
from connection_info import ConnectionState
from gen_py.process_info.ttypes import ConnectionType
collector_addr = e.sm._active_collector
if collector_addr is None:
collector_addr = ''
ConnectionState.update(conn_type = ConnectionType.COLLECTOR,
name = '',
status = status,
server_addrs = [collector_addr],
message = '%s to %s on %s' % (e.src, e.dst, e.event))
#end _update_connection_state
def _connection_state_up(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.UP)
#end _connection_state_up
def _connection_state_down(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.DOWN)
#end _connection_state_down
def _connection_state_init(e):
from gen_py.process_info.ttypes import ConnectionStatus
_update_connection_state(e, ConnectionStatus.INIT)
#end _connection_state_init
def _on_idle(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# Reset active and backup collector
self._active_collector = self._connection.primary_collector()
self._backup_collector = self._connection.secondary_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._disable != True:
e.sm._start_idle_hold_timer()
# update connection state
_connection_state_down(e)
#end _on_idle
def _on_disconnect(e):
# update connection state
_connection_state_down(e)
#end _on_disconnect
def _on_connect(e):
if e.sm._idle_hold_timer is not None:
e.sm._cancel_idle_hold_timer()
e.sm._connection.reset_collector()
# clean up existing connection
e.sm._delete_session()
if e.sm._active_collector is not None:
# update connection state
_connection_state_init(e)
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event = Event._EV_COLLECTOR_UNKNOWN))
#end _on_connect
def _on_connect_to_backup(e):
if e.sm._connect_timer is not None:
e.sm._cancel_connect_timer()
# clean up existing connection
e.sm._delete_session()
# try to connect to the backup collector, if known
if e.sm._backup_collector is not None:
e.sm._active_collector, e.sm._backup_collector = \
e.sm._backup_collector, e.sm._active_collector
# update connection state
_connection_state_init(e)
e.sm._create_session()
e.sm._start_connect_timer()
e.sm._session.connect()
else:
e.sm.enqueue_event(Event(event = Event._EV_BACKUP_COLLECTOR_UNKNOWN))
#end _on_connect_to_backup
def _on_client_init(e):
e.sm._connects += 1
gevent.spawn(e.sm._session.read)
e.sm._connection.handle_initialized(e.sm._connects)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_init(e)
#end _on_client_init
def _on_established(e):
e.sm._cancel_connect_timer()
e.sm._connection.set_collector(e.sm_event.source)
e.sm._connection.handle_sandesh_ctrl_msg(e.sm_event.msg)
e.sm._connection.sandesh_instance().send_generator_info()
# update connection state
_connection_state_up(e)
#end _on_established
# FSM - Fysom
self._fsm = Fysom({
'initial': {'state' : State._IDLE,
'event' : Event._EV_START,
'defer' : True
},
'events': [
# _IDLE
{'name' : Event._EV_IDLE_HOLD_TIMER_EXPIRED,
'src' : State._IDLE,
'dst' : State._CONNECT
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._IDLE,
'dst' : State._CONNECT
},
{'name' : Event._EV_START,
'src' : State._IDLE,
'dst' : State._CONNECT
},
# _DISCONNECT
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._DISCONNECT,
'dst' : State._CONNECT
},
# _CONNECT
{'name' : Event._EV_COLLECTOR_UNKNOWN,
'src' : State._CONNECT,
'dst' : State._DISCONNECT
},
{'name' : Event._EV_TCP_CONNECT_FAIL,
'src' : State._CONNECT,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CONNECT,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CONNECT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECTED,
'src' : State._CONNECT,
'dst' : State._CLIENT_INIT
},
# _CONNECT_TO_BACKUP
{'name' : Event._EV_BACKUP_COLLECTOR_UNKNOWN,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECT_FAIL,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CONNECTED,
'src' : State._CONNECT_TO_BACKUP,
'dst' : State._CLIENT_INIT
},
# _CLIENT_INIT
{'name' : Event._EV_CONNECT_TIMER_EXPIRED,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_TCP_CLOSE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._CLIENT_INIT,
'dst' : State._IDLE
},
{'name' : Event._EV_SANDESH_CTRL_MESSAGE_RECV,
'src' : State._CLIENT_INIT,
'dst' : State._ESTABLISHED
},
# _ESTABLISHED
{'name' : Event._EV_TCP_CLOSE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT_TO_BACKUP
},
{'name' : Event._EV_STOP,
'src' : State._ESTABLISHED,
'dst' : State._IDLE
},
{'name' : Event._EV_COLLECTOR_CHANGE,
'src' : State._ESTABLISHED,
'dst' : State._CONNECT
}
],
'callbacks': {
'on' + State._IDLE : _on_idle,
'on' + State._CONNECT : _on_connect,
'on' + State._CONNECT_TO_BACKUP : _on_connect_to_backup,
'on' + State._CLIENT_INIT : _on_client_init,
'on' + State._ESTABLISHED : _on_established,
}
})
self._connection = connection
self._session = None
self._connects = 0
self._disable = False
self._idle_hold_timer = None
self._connect_timer = None
self._active_collector = primary_collector
self._backup_collector = secondary_collector
self._logger = logger
self._event_queue = WorkQueue(self._dequeue_event,
self._is_ready_to_dequeue_event)