def drain_queue(queue):
"""Strip a (declared) queue from all outstanding messages"""
if not queue:
return
if not queue in queues.QUEUES:
print "Queue %s not configured" % queue
return
print "Queue to be drained: %s" % queue
if not get_user_confirmation():
return
client = AMQPClient()
client.connect()
tag = client.basic_consume(queue=queue, callback=callbacks.dummy_proc)
print "Queue draining about to start, hit Ctrl+c when done"
time.sleep(2)
print "Queue draining starting"
num_processed = 0
while True:
client.basic_wait()
num_processed += 1
sys.stderr.write("Ignored %d messages\r" % num_processed)
client.basic_cancel(tag)
client.close()
def drain_queue(queue):
"""Strip a (declared) queue from all outstanding messages"""
if not queue:
return
if not queue in queues.QUEUES:
print "Queue %s not configured" % queue
return
print "Queue to be drained: %s" % queue
if not get_user_confirmation():
return
client = AMQPClient()
client.connect()
tag = client.basic_consume(queue=queue, callback=callbacks.dummy_proc)
print "Queue draining about to start, hit Ctrl+c when done"
time.sleep(2)
print "Queue draining starting"
num_processed = 0
while True:
client.basic_wait()
num_processed += 1
sys.stderr.write("Ignored %d messages\r" % num_processed)
client.basic_cancel(tag)
client.close()
def check_dispatcher_status(pid_file):
"""Check the status of a running snf-dispatcher process.
Check the status of a running snf-dispatcher process, the PID of which is
contained in the 'pid_file'. This function will send a 'status-check'
message to the running snf-dispatcher, wait for dispatcher's response and
pretty-print the results.
"""
dispatcher_pid = pidlockfile.read_pid_from_pidfile(pid_file)
if dispatcher_pid is None:
sys.stdout.write("snf-dispatcher with PID file '%s' is not running."
" PID file does not exist\n" % pid_file)
sys.exit(1)
sys.stdout.write("snf-dispatcher (PID: %s): running\n" % dispatcher_pid)
hostname = get_hostname()
local_queue = "snf:check_tool:%s:%s" % (hostname, os.getpid())
dispatcher_queue = queues.get_dispatcher_request_queue(
hostname, dispatcher_pid)
log_amqp.setLevel(logging.WARNING)
try:
client = AMQPClient(logger=log_amqp)
client.connect()
client.queue_declare(queue=local_queue, mirrored=False, exclusive=True)
client.basic_consume(queue=local_queue,
callback=lambda x, y: 0,
no_ack=True)
msg = json.dumps({"action": "status-check", "reply_to": local_queue})
client.basic_publish("", dispatcher_queue, msg)
except:
sys.stdout.write("Error while connecting with AMQP\nError:\n")
traceback.print_exc()
sys.exit(1)
sys.stdout.write("AMQP -> snf-dispatcher: ")
msg = client.basic_wait(timeout=CHECK_TOOL_ACK_TIMEOUT)
if msg is None:
sys.stdout.write("fail\n")
sys.stdout.write("ERROR: No reply from snf-dipatcher after '%s'"
" seconds.\n" % CHECK_TOOL_ACK_TIMEOUT)
sys.exit(1)
else:
try:
body = json.loads(msg["body"])
assert (body["action"] == "status-check"), "Invalid action"
assert (body["status"] == "started"), "Invalid status"
sys.stdout.write("ok\n")
except Exception as e:
sys.stdout.write("Received invalid msg from snf-dispatcher:"
" msg: %s error: %s\n" % (msg, e))
sys.exit(1)
msg = client.basic_wait(timeout=CHECK_TOOL_REPORT_TIMEOUT)
if msg is None:
sys.stdout.write("fail\n")
sys.stdout.write("ERROR: No status repot after '%s' seconds.\n" %
CHECK_TOOL_REPORT_TIMEOUT)
sys.exit(1)
sys.stdout.write("Backends:\n")
status = json.loads(msg["body"])["status"]
for backend, bstatus in sorted(status.items()):
sys.stdout.write(" * %s: \n" % backend)
sys.stdout.write(" snf-dispatcher -> ganeti: %s\n" % bstatus["RAPI"])
sys.stdout.write(" snf-ganeti-eventd -> AMQP: %s\n" %
bstatus["eventd"])
sys.exit(0)
def main():
parser = OptionParser()
parser.add_option('-v', '--verbose', action='store_true', default=False,
dest='verbose', help='Enable verbose logging')
parser.add_option('--host', default=BROKER_HOST, dest='host',
help='RabbitMQ host (default: %s)' % BROKER_HOST)
parser.add_option('--port', default=BROKER_PORT, dest='port',
help='RabbitMQ port (default: %s)' % BROKER_PORT, type='int')
parser.add_option('--user', default=BROKER_USER, dest='user',
help='RabbitMQ user (default: %s)' % BROKER_USER)
parser.add_option('--password', default=BROKER_PASSWORD, dest='password',
help='RabbitMQ password (default: %s)' % BROKER_PASSWORD)
parser.add_option('--vhost', default=BROKER_VHOST, dest='vhost',
help='RabbitMQ vhost (default: %s)' % BROKER_VHOST)
parser.add_option('--queue', default=CONSUMER_QUEUE, dest='queue',
help='RabbitMQ queue (default: %s)' % CONSUMER_QUEUE)
parser.add_option('--exchange', default=CONSUMER_EXCHANGE, dest='exchange',
help='RabbitMQ exchange (default: %s)' % CONSUMER_EXCHANGE)
parser.add_option('--key', default=CONSUMER_KEY, dest='key',
help='RabbitMQ key (default: %s)' % CONSUMER_KEY)
parser.add_option('--callback', default=None, dest='callback',
help='Callback function to consume messages')
parser.add_option('--test', action='store_true', default=False,
dest='test', help='Produce a dummy message for testing')
opts, args = parser.parse_args()
DEBUG = False
if opts.verbose:
DEBUG = True
logging.basicConfig(
format='%(asctime)s [%(levelname)s] %(name)s %(message)s',
datefmt='%Y-%m-%d %H:%M:%S',
level=logging.DEBUG if DEBUG else logging.INFO)
logger = logging.getLogger('dispatcher')
host = 'amqp://%s:%s@%s:%s' % (opts.user, opts.password, opts.host, opts.port)
queue = opts.queue
key = opts.key
exchange = opts.exchange
client = AMQPClient(hosts=[host])
client.connect()
if opts.test:
client.exchange_declare(exchange=exchange,
type='topic')
client.basic_publish(exchange=exchange,
routing_key=key,
body= json.dumps({"test": "0123456789"}))
client.close()
sys.exit()
callback = None
if opts.callback:
cb = opts.callback.rsplit('.', 1)
if len(cb) == 2:
__import__(cb[0])
cb_module = sys.modules[cb[0]]
callback = getattr(cb_module, cb[1])
def handle_message(client, msg):
logger.debug('%s', msg)
if callback:
callback(msg)
client.basic_ack(msg)
client.queue_declare(queue=queue)
client.queue_bind(queue=queue,
exchange=exchange,
routing_key=key)
client.basic_consume(queue=queue, callback=handle_message)
try:
while True:
client.basic_wait()
except KeyboardInterrupt:
pass
finally:
client.close()
def main():
parser = OptionParser()
parser.add_option('-v',
'--verbose',
action='store_true',
default=False,
dest='verbose',
help='Enable verbose logging')
parser.add_option('--host',
default=BROKER_HOST,
dest='host',
help='RabbitMQ host (default: %s)' % BROKER_HOST)
parser.add_option('--port',
default=BROKER_PORT,
dest='port',
help='RabbitMQ port (default: %s)' % BROKER_PORT,
type='int')
parser.add_option('--user',
default=BROKER_USER,
dest='user',
help='RabbitMQ user (default: %s)' % BROKER_USER)
parser.add_option('--password',
default=BROKER_PASSWORD,
dest='password',
help='RabbitMQ password (default: %s)' % BROKER_PASSWORD)
parser.add_option('--vhost',
default=BROKER_VHOST,
dest='vhost',
help='RabbitMQ vhost (default: %s)' % BROKER_VHOST)
parser.add_option('--queue',
default=CONSUMER_QUEUE,
dest='queue',
help='RabbitMQ queue (default: %s)' % CONSUMER_QUEUE)
parser.add_option('--exchange',
default=CONSUMER_EXCHANGE,
dest='exchange',
help='RabbitMQ exchange (default: %s)' %
CONSUMER_EXCHANGE)
parser.add_option('--key',
default=CONSUMER_KEY,
dest='key',
help='RabbitMQ key (default: %s)' % CONSUMER_KEY)
parser.add_option('--callback',
default=None,
dest='callback',
help='Callback function to consume messages')
parser.add_option('--test',
action='store_true',
default=False,
dest='test',
help='Produce a dummy message for testing')
opts, args = parser.parse_args()
DEBUG = False
if opts.verbose:
DEBUG = True
logging.basicConfig(
format='%(asctime)s [%(levelname)s] %(name)s %(message)s',
datefmt='%Y-%m-%d %H:%M:%S',
level=logging.DEBUG if DEBUG else logging.INFO)
logger = logging.getLogger('dispatcher')
host = 'amqp://%s:%s@%s:%s' % (opts.user, opts.password, opts.host,
opts.port)
queue = opts.queue
key = opts.key
exchange = opts.exchange
client = AMQPClient(hosts=[host])
client.connect()
if opts.test:
client.exchange_declare(exchange=exchange, type='topic')
client.basic_publish(exchange=exchange,
routing_key=key,
body=json.dumps({"test": "0123456789"}))
client.close()
sys.exit()
callback = None
if opts.callback:
cb = opts.callback.rsplit('.', 1)
if len(cb) == 2:
__import__(cb[0])
cb_module = sys.modules[cb[0]]
callback = getattr(cb_module, cb[1])
def handle_message(client, msg):
logger.debug('%s', msg)
if callback:
callback(msg)
client.basic_ack(msg)
client.queue_declare(queue=queue)
client.queue_bind(queue=queue, exchange=exchange, routing_key=key)
client.basic_consume(queue=queue, callback=handle_message)
try:
while True:
client.basic_wait()
except KeyboardInterrupt:
pass
finally:
client.close()
def check_dispatcher_status(pid_file):
"""Check the status of a running snf-dispatcher process.
Check the status of a running snf-dispatcher process, the PID of which is
contained in the 'pid_file'. This function will send a 'status-check'
message to the running snf-dispatcher, wait for dispatcher's response and
pretty-print the results.
"""
dispatcher_pid = pidlockfile.read_pid_from_pidfile(pid_file)
if dispatcher_pid is None:
sys.stdout.write("snf-dispatcher with PID file '%s' is not running."
" PID file does not exist\n" % pid_file)
sys.exit(1)
sys.stdout.write("snf-dispatcher (PID: %s): running\n" % dispatcher_pid)
hostname = get_hostname()
local_queue = "snf:check_tool:%s:%s" % (hostname, os.getpid())
dispatcher_queue = queues.get_dispatcher_request_queue(hostname,
dispatcher_pid)
log_amqp.setLevel(logging.WARNING)
try:
client = AMQPClient(logger=log_amqp)
client.connect()
client.queue_declare(queue=local_queue, mirrored=False, exclusive=True)
client.basic_consume(queue=local_queue, callback=lambda x, y: 0,
no_ack=True)
msg = json.dumps({"action": "status-check", "reply_to": local_queue})
client.basic_publish("", dispatcher_queue, msg)
except:
sys.stdout.write("Error while connecting with AMQP\nError:\n")
traceback.print_exc()
sys.exit(1)
sys.stdout.write("AMQP -> snf-dispatcher: ")
msg = client.basic_wait(timeout=CHECK_TOOL_ACK_TIMEOUT)
if msg is None:
sys.stdout.write("fail\n")
sys.stdout.write("ERROR: No reply from snf-dipatcher after '%s'"
" seconds.\n" % CHECK_TOOL_ACK_TIMEOUT)
sys.exit(1)
else:
try:
body = json.loads(msg["body"])
assert(body["action"] == "status-check"), "Invalid action"
assert(body["status"] == "started"), "Invalid status"
sys.stdout.write("ok\n")
except Exception as e:
sys.stdout.write("Received invalid msg from snf-dispatcher:"
" msg: %s error: %s\n" % (msg, e))
sys.exit(1)
msg = client.basic_wait(timeout=CHECK_TOOL_REPORT_TIMEOUT)
if msg is None:
sys.stdout.write("fail\n")
sys.stdout.write("ERROR: No status repot after '%s' seconds.\n"
% CHECK_TOOL_REPORT_TIMEOUT)
sys.exit(1)
sys.stdout.write("Backends:\n")
status = json.loads(msg["body"])["status"]
for backend, bstatus in sorted(status.items()):
sys.stdout.write(" * %s: \n" % backend)
sys.stdout.write(" snf-dispatcher -> ganeti: %s\n" %
bstatus["RAPI"])
sys.stdout.write(" snf-ganeti-eventd -> AMQP: %s\n" %
bstatus["eventd"])
sys.exit(0)
