def register(self, proxy, in_addr, zmq_type_in, out_addr=None,
zmq_type_out=None, in_bind=True, out_bind=True,
subscribe=None):
LOG.info(_("Registering reactor"))
if zmq_type_in not in (zmq.PULL, zmq.SUB):
raise RPCException("Bad input socktype")
# Items push in.
inq = ZmqSocket(in_addr, zmq_type_in, bind=in_bind,
subscribe=subscribe)
self.proxies[inq] = proxy
self.sockets.append(inq)
LOG.info(_("In reactor registered"))
if not out_addr:
return
if zmq_type_out not in (zmq.PUSH, zmq.PUB):
raise RPCException("Bad output socktype")
# Items push out.
outq = ZmqSocket(out_addr, zmq_type_out, bind=out_bind)
self.mapping[inq] = outq
self.mapping[outq] = inq
self.sockets.append(outq)
LOG.info(_("Out reactor registered"))
def ssh_execute(ssh,
cmd,
process_input=None,
addl_env=None,
check_exit_code=True):
LOG.debug(_('Running cmd (SSH): %s'), cmd)
if addl_env:
raise InvalidArgumentError(_('Environment not supported over SSH'))
if process_input:
# This is (probably) fixable if we need it...
raise InvalidArgumentError(_('process_input not supported over SSH'))
stdin_stream, stdout_stream, stderr_stream = ssh.exec_command(cmd)
channel = stdout_stream.channel
# NOTE(justinsb): This seems suspicious...
# ...other SSH clients have buffering issues with this approach
stdout = stdout_stream.read()
stderr = stderr_stream.read()
stdin_stream.close()
exit_status = channel.recv_exit_status()
# exit_status == -1 if no exit code was returned
if exit_status != -1:
LOG.debug(_('Result was %s') % exit_status)
if check_exit_code and exit_status != 0:
raise ProcessExecutionError(exit_code=exit_status,
stdout=stdout,
stderr=stderr,
cmd=cmd)
return (stdout, stderr)
def _parse_check(rule):
"""
Parse a single base check rule into an appropriate Check object.
"""
# Handle the special checks
if rule == '!':
return FalseCheck()
elif rule == '@':
return TrueCheck()
try:
kind, match = rule.split(':', 1)
except Exception:
LOG.exception(_("Failed to understand rule %(rule)s") % locals())
# If the rule is invalid, we'll fail closed
return FalseCheck()
# Find what implements the check
if kind in _checks:
return _checks[kind](kind, match)
elif None in _checks:
return _checks[None](kind, match)
else:
LOG.error(_("No handler for matches of kind %s") % kind)
return FalseCheck()
def consume(self, sock):
#TODO(ewindisch): use zero-copy (i.e. references, not copying)
data = sock.recv()
LOG.debug(_("CONSUMER RECEIVED DATA: %s"), data)
if sock in self.mapping:
LOG.debug(_("ROUTER RELAY-OUT %(data)s") % {'data': data})
self.mapping[sock].send(data)
return
proxy = self.proxies[sock]
if data[2] == 'cast': # Legacy protocol
packenv = data[3]
ctx, msg = _deserialize(packenv)
request = rpc_common.deserialize_msg(msg)
ctx = RpcContext.unmarshal(ctx)
elif data[2] == 'impl_zmq_v2':
packenv = data[4:]
msg = unflatten_envelope(packenv)
request = rpc_common.deserialize_msg(msg)
# Unmarshal only after verifying the message.
ctx = RpcContext.unmarshal(data[3])
else:
LOG.error(_("ZMQ Envelope version unsupported or unknown."))
return
self.pool.spawn_n(self.process, proxy, ctx, request)
def _multi_send(method,
context,
topic,
msg,
timeout=None,
envelope=False,
_msg_id=None):
"""Wraps the sending of messages.
Dispatches to the matchmaker and sends message to all relevant hosts.
"""
conf = CONF
LOG.debug("%(msg)s" % {'msg': ' '.join(map(pformat, (topic, msg)))})
queues = _get_matchmaker().queues(topic)
LOG.debug("Sending message(s) to: %s", queues)
# Don't stack if we have no matchmaker results
if not queues:
LOG.warn(_("No matchmaker results. Not casting."))
# While not strictly a timeout, callers know how to handle
# this exception and a timeout isn't too big a lie.
raise rpc_common.Timeout(_("No match from matchmaker."))
# This supports brokerless fanout (addresses > 1)
for queue in queues:
(_topic, ip_addr) = queue
_addr = "tcp://%s:%s" % (ip_addr, conf.rpc_zmq_port)
if method.__name__ == '_cast':
eventlet.spawn_n(method, _addr, context, _topic, msg, timeout,
envelope, _msg_id)
return
return method(_addr, context, _topic, msg, timeout, envelope)
def load_xcat_resp(message):
"""Abstract information from xCat REST response body.
As default, xCat response will in format of JSON and can be
converted to Python dictionary, would looks like:
{"data": [{"info": [info,]}, {"data": [data,]}, ..., {"error": [error,]}]}
Returns a Python dictionary, looks like:
{'info': [info,],
'data': [data,],
'error': [error,]}
"""
resp_list = jsonloads(message)['data']
keys = constants.XCAT_RESPONSE_KEYS
resp = {}
try:
for k in keys:
resp[k] = []
for d in resp_list:
for k in keys:
if d.get(k) is not None:
resp[k].append(d.get(k))
except Exception:
LOG.error(_("Invalid data returned from xCat: %s") % message)
raise exception.zVMInvalidxCatResponseDataError(msg=message)
if not verify_xcat_resp(resp):
LOG.error(_("Error returned from xCAT: %s") % message)
raise exception.zVMInvalidxCatResponseDataError(msg=message)
else:
return resp
def publisher(waiter):
LOG.info(_("Creating proxy for topic: %s"), topic)
try:
# The topic is received over the network,
# don't trust this input.
if self.badchars.search(topic) is not None:
emsg = _("Topic contained dangerous characters.")
LOG.warn(emsg)
raise RPCException(emsg)
out_sock = ZmqSocket("ipc://%s/zmq_topic_%s" %
(ipc_dir, topic),
sock_type,
bind=True)
except RPCException:
waiter.send_exception(*sys.exc_info())
return
self.topic_proxy[topic] = eventlet.queue.LightQueue(
CONF.rpc_zmq_topic_backlog)
self.sockets.append(out_sock)
# It takes some time for a pub socket to open,
# before we can have any faith in doing a send() to it.
if sock_type == zmq.PUB:
eventlet.sleep(.5)
waiter.send(True)
while (True):
data = self.topic_proxy[topic].get()
out_sock.send(data, copy=False)
def _wait_child(self):
try:
# Don't block if no child processes have exited
pid, status = os.waitpid(0, os.WNOHANG)
if not pid:
return None
except OSError as exc:
if exc.errno not in (errno.EINTR, errno.ECHILD):
raise
return None
if os.WIFSIGNALED(status):
sig = os.WTERMSIG(status)
LOG.info(_('Child %(pid)d killed by signal %(sig)d'),
dict(pid=pid, sig=sig))
else:
code = os.WEXITSTATUS(status)
LOG.info(_('Child %(pid)s exited with status %(code)d'),
dict(pid=pid, code=code))
if pid not in self.children:
LOG.warning(_('pid %d not in child list'), pid)
return None
wrap = self.children.pop(pid)
wrap.children.remove(pid)
return wrap
def _inner():
if initial_delay:
greenthread.sleep(initial_delay)
try:
while self._running:
start = timeutils.utcnow()
self.f(*self.args, **self.kw)
end = timeutils.utcnow()
if not self._running:
break
delay = interval - timeutils.delta_seconds(start, end)
if delay <= 0:
LOG.warn(_('task run outlasted interval by %s sec') %
-delay)
greenthread.sleep(delay if delay > 0 else 0)
except LoopingCallDone as e:
self.stop()
done.send(e.retvalue)
except Exception:
LOG.exception(_('in fixed duration looping call'))
done.send_exception(*sys.exc_info())
return
else:
done.send(True)
def _connect(self, params):
"""Connect to rabbit. Re-establish any queues that may have
been declared before if we are reconnecting. Exceptions should
be handled by the caller.
"""
if self.connection:
LOG.info(_("Reconnecting to AMQP server on "
"%(hostname)s:%(port)d") % params)
try:
self.connection.release()
except self.connection_errors:
pass
# Setting this in case the next statement fails, though
# it shouldn't be doing any network operations, yet.
self.connection = None
self.connection = kombu.connection.BrokerConnection(**params)
self.connection_errors = self.connection.connection_errors
if self.memory_transport:
# Kludge to speed up tests.
self.connection.transport.polling_interval = 0.0
self.consumer_num = itertools.count(1)
self.connection.connect()
self.channel = self.connection.channel()
# work around 'memory' transport bug in 1.1.3
if self.memory_transport:
self.channel._new_queue('ae.undeliver')
for consumer in self.consumers:
consumer.reconnect(self.channel)
LOG.info(_('Connected to AMQP server on %(hostname)s:%(port)d') %
params)
def sync_portforwards(self, context, **kwargs):
host = kwargs["host"]
adminContext = neutron_context.get_admin_context()
portforwards = self.get_portforwards(adminContext)
router_ids = None
l3plugin = manager.NeutronManager.get_service_plugins()[
plugin_constants.L3_ROUTER_NAT]
if not l3plugin:
routers = {}
LOG.error(
_('No plugin for L3 routing registered! Will reply '
'to l3 agent with empty router dictionary.'))
elif utils.is_extension_supported(
l3plugin, constants.L3_AGENT_SCHEDULER_EXT_ALIAS):
if cfg.CONF.router_auto_schedule:
l3plugin.auto_schedule_routers(context, host, router_ids)
routers = l3plugin.list_active_sync_routers_on_active_l3_agent(
context, host, router_ids)
else:
routers = l3plugin.get_sync_data(context, router_ids)
plugin = manager.NeutronManager.get_plugin()
if utils.is_extension_supported(plugin,
constants.PORT_BINDING_EXT_ALIAS):
self._ensure_host_set_on_ports(context, plugin, host, routers)
found_router_ids = []
for router in routers:
found_router_ids.append(router["id"])
portforwards = [
portforward for portforward in portforwards
if portforward["router_id"] in found_router_ids
]
LOG.debug(_("portforwards returned to port forward agent:\n %s"),
jsonutils.dumps(portforwards, indent=5))
return portforwards
def _parse_check(rule):
"""
Parse a single base check rule into an appropriate Check object.
"""
# Handle the special checks
if rule == '!':
return FalseCheck()
elif rule == '@':
return TrueCheck()
try:
kind, match = rule.split(':', 1)
except Exception:
LOG.exception(_("Failed to understand rule %(rule)s") % locals())
# If the rule is invalid, we'll fail closed
return FalseCheck()
# Find what implements the check
if kind in _checks:
return _checks[kind](kind, match)
elif None in _checks:
return _checks[None](kind, match)
else:
LOG.error(_("No handler for matches of kind %s") % kind)
return FalseCheck()
def load_xcat_resp(message):
"""Abstract information from xCat REST response body.
As default, xCat response will in format of JSON and can be
converted to Python dictionary, would looks like:
{"data": [{"info": [info,]}, {"data": [data,]}, ..., {"error": [error,]}]}
Returns a Python dictionary, looks like:
{'info': [info,],
'data': [data,],
'error': [error,]}
"""
resp_list = jsonloads(message)['data']
keys = constants.XCAT_RESPONSE_KEYS
resp = {}
try:
for k in keys:
resp[k] = []
for d in resp_list:
for k in keys:
if d.get(k) is not None:
resp[k].append(d.get(k))
except Exception:
LOG.error(_("Invalid data returned from xCat: %s") % message)
raise exception.zVMInvalidxCatResponseDataError(msg=message)
if not verify_xcat_resp(resp):
LOG.error(_("Error returned from xCAT: %s") % message)
raise exception.zVMInvalidxCatResponseDataError(msg=message)
else:
return resp
def wait(self):
"""Loop waiting on children to die and respawning as necessary."""
LOG.debug(_('Full set of CONF:'))
CONF.log_opt_values(LOG, std_logging.DEBUG)
while True:
self.handle_signal()
self._respawn_children()
if self.sigcaught:
signame = _signo_to_signame(self.sigcaught)
LOG.info(_('Caught %s, stopping children'), signame)
if not _is_sighup_and_daemon(self.sigcaught):
break
for pid in self.children:
os.kill(pid, signal.SIGHUP)
self.running = True
self.sigcaught = None
for pid in self.children:
try:
os.kill(pid, signal.SIGTERM)
except OSError as exc:
if exc.errno != errno.ESRCH:
raise
# Wait for children to die
if self.children:
LOG.info(_('Waiting on %d children to exit'), len(self.children))
while self.children:
self._wait_child()
def ssh_execute(ssh, cmd, process_input=None,
addl_env=None, check_exit_code=True):
LOG.debug(_('Running cmd (SSH): %s'), cmd)
if addl_env:
raise InvalidArgumentError(_('Environment not supported over SSH'))
if process_input:
# This is (probably) fixable if we need it...
raise InvalidArgumentError(_('process_input not supported over SSH'))
stdin_stream, stdout_stream, stderr_stream = ssh.exec_command(cmd)
channel = stdout_stream.channel
# NOTE(justinsb): This seems suspicious...
# ...other SSH clients have buffering issues with this approach
stdout = stdout_stream.read()
stderr = stderr_stream.read()
stdin_stream.close()
exit_status = channel.recv_exit_status()
# exit_status == -1 if no exit code was returned
if exit_status != -1:
LOG.debug(_('Result was %s') % exit_status)
if check_exit_code and exit_status != 0:
raise ProcessExecutionError(exit_code=exit_status,
stdout=stdout,
stderr=stderr,
cmd=cmd)
return (stdout, stderr)
def run_periodic_tasks(self, context, raise_on_error=False):
"""Tasks to be run at a periodic interval."""
idle_for = DEFAULT_INTERVAL
for task_name, task in self._periodic_tasks:
full_task_name = '.'.join([self.__class__.__name__, task_name])
now = timeutils.utcnow()
spacing = self._periodic_spacing[task_name]
last_run = self._periodic_last_run[task_name]
# If a periodic task is _nearly_ due, then we'll run it early
if spacing is not None and last_run is not None:
due = last_run + datetime.timedelta(seconds=spacing)
if not timeutils.is_soon(due, 0.2):
idle_for = min(idle_for, timeutils.delta_seconds(now, due))
continue
if spacing is not None:
idle_for = min(idle_for, spacing)
LOG.debug(_("Running periodic task %(full_task_name)s"), locals())
self._periodic_last_run[task_name] = timeutils.utcnow()
try:
task(self, context)
except Exception as e:
if raise_on_error:
raise
LOG.exception(_("Error during %(full_task_name)s: %(e)s"),
locals())
time.sleep(0)
return idle_for
def _connect(self, params):
"""Connect to rabbit. Re-establish any queues that may have
been declared before if we are reconnecting. Exceptions should
be handled by the caller.
"""
if self.connection:
LOG.info(
_("Reconnecting to AMQP server on "
"%(hostname)s:%(port)d") % params)
try:
self.connection.release()
except self.connection_errors:
pass
# Setting this in case the next statement fails, though
# it shouldn't be doing any network operations, yet.
self.connection = None
self.connection = kombu.connection.BrokerConnection(**params)
self.connection_errors = self.connection.connection_errors
if self.memory_transport:
# Kludge to speed up tests.
self.connection.transport.polling_interval = 0.0
self.consumer_num = itertools.count(1)
self.connection.connect()
self.channel = self.connection.channel()
# work around 'memory' transport bug in 1.1.3
if self.memory_transport:
self.channel._new_queue('ae.undeliver')
for consumer in self.consumers:
consumer.reconnect(self.channel)
LOG.info(
_('Connected to AMQP server on %(hostname)s:%(port)d') % params)
def _wait_for_exit_or_signal(self, ready_callback=None):
status = None
signo = 0
LOG.debug(_('Full set of CONF:'))
CONF.log_opt_values(LOG, std_logging.DEBUG)
try:
if ready_callback:
ready_callback()
super(ServiceLauncher, self).wait()
except SignalExit as exc:
signame = _signo_to_signame(exc.signo)
LOG.info(_('Caught %s, exiting'), signame)
status = exc.code
signo = exc.signo
except SystemExit as exc:
status = exc.code
finally:
self.stop()
if rpc:
try:
rpc.cleanup()
except Exception:
# We're shutting down, so it doesn't matter at this point.
LOG.exception(_('Exception during rpc cleanup.'))
return status, signo
def _get_response(self, ctx, proxy, topic, data):
"""Process a curried message and cast the result to topic."""
LOG.debug(_("Running func with context: %s"), ctx.to_dict())
data.setdefault('version', None)
data.setdefault('args', {})
try:
result = proxy.dispatch(ctx, data['version'], data['method'],
data.get('namespace'), **data['args'])
return ConsumerBase.normalize_reply(result, ctx.replies)
except greenlet.GreenletExit:
# ignore these since they are just from shutdowns
pass
except rpc_common.ClientException as e:
LOG.debug(
_("Expected exception during message handling (%s)") %
e._exc_info[1])
return {
'exc':
rpc_common.serialize_remote_exception(e._exc_info,
log_failure=False)
}
except Exception:
LOG.error(_("Exception during message handling"))
return {
'exc': rpc_common.serialize_remote_exception(sys.exc_info())
}
def _start_child(self, wrap):
if len(wrap.forktimes) > wrap.workers:
# Limit ourselves to one process a second (over the period of
# number of workers * 1 second). This will allow workers to
# start up quickly but ensure we don't fork off children that
# die instantly too quickly.
if time.time() - wrap.forktimes[0] < wrap.workers:
LOG.info(_('Forking too fast, sleeping'))
time.sleep(1)
wrap.forktimes.pop(0)
wrap.forktimes.append(time.time())
pid = os.fork()
if pid == 0:
launcher = self._child_process(wrap.service)
while True:
self._child_process_handle_signal()
status, signo = self._child_wait_for_exit_or_signal(launcher)
if not _is_sighup_and_daemon(signo):
break
launcher.restart()
os._exit(status)
LOG.info(_('Started child %d'), pid)
wrap.children.add(pid)
self.children[pid] = wrap
return pid
def consume_in_thread(self):
"""Runs the ZmqProxy service."""
ipc_dir = CONF.rpc_zmq_ipc_dir
consume_in = "tcp://%s:%s" % \
(CONF.rpc_zmq_bind_address,
CONF.rpc_zmq_port)
consumption_proxy = InternalContext(None)
try:
os.makedirs(ipc_dir)
except os.error:
if not os.path.isdir(ipc_dir):
with excutils.save_and_reraise_exception():
LOG.error(
_("Required IPC directory does not exist at"
" %s") % (ipc_dir, ))
try:
self.register(consumption_proxy,
consume_in,
zmq.PULL,
out_bind=True)
except zmq.ZMQError:
if os.access(ipc_dir, os.X_OK):
with excutils.save_and_reraise_exception():
LOG.error(
_("Permission denied to IPC directory at"
" %s") % (ipc_dir, ))
with excutils.save_and_reraise_exception():
LOG.error(
_("Could not create ZeroMQ receiver daemon. "
"Socket may already be in use."))
super(ZmqProxy, self).consume_in_thread()
def wait(self):
"""Loop waiting on children to die and respawning as necessary."""
LOG.debug(_('Full set of CONF:'))
CONF.log_opt_values(LOG, std_logging.DEBUG)
while True:
self.handle_signal()
self._respawn_children()
if self.sigcaught:
signame = _signo_to_signame(self.sigcaught)
LOG.info(_('Caught %s, stopping children'), signame)
if not _is_sighup_and_daemon(self.sigcaught):
break
for pid in self.children:
os.kill(pid, signal.SIGHUP)
self.running = True
self.sigcaught = None
for pid in self.children:
try:
os.kill(pid, signal.SIGTERM)
except OSError as exc:
if exc.errno != errno.ESRCH:
raise
# Wait for children to die
if self.children:
LOG.info(_('Waiting on %d children to exit'), len(self.children))
while self.children:
self._wait_child()
def consume(self, sock):
#TODO(ewindisch): use zero-copy (i.e. references, not copying)
data = sock.recv()
LOG.debug(_("CONSUMER RECEIVED DATA: %s"), data)
proxy = self.proxies[sock]
if data[2] == 'cast': # Legacy protocol
packenv = data[3]
ctx, msg = _deserialize(packenv)
request = rpc_common.deserialize_msg(msg)
ctx = RpcContext.unmarshal(ctx)
elif data[2] == 'impl_zmq_v2':
packenv = data[4:]
msg = unflatten_envelope(packenv)
request = rpc_common.deserialize_msg(msg)
# Unmarshal only after verifying the message.
ctx = RpcContext.unmarshal(data[3])
else:
LOG.error(_("ZMQ Envelope version unsupported or unknown."))
return
self.pool.spawn_n(self.process, proxy, ctx, request)
def create_consumer(self, topic, proxy, fanout=False):
# Register with matchmaker.
_get_matchmaker().register(topic, CONF.rpc_zmq_host)
# Subscription scenarios
if fanout:
sock_type = zmq.SUB
subscribe = ('', fanout)[type(fanout) == str]
topic = 'fanout~' + topic.split('.', 1)[0]
else:
sock_type = zmq.PULL
subscribe = None
topic = '.'.join((topic.split('.', 1)[0], CONF.rpc_zmq_host))
if topic in self.topics:
LOG.info(_("Skipping topic registration. Already registered."))
return
# Receive messages from (local) proxy
inaddr = "ipc://%s/zmq_topic_%s" % \
(CONF.rpc_zmq_ipc_dir, topic)
LOG.debug(_("Consumer is a zmq.%s"), ['PULL',
'SUB'][sock_type == zmq.SUB])
self.reactor.register(proxy,
inaddr,
sock_type,
subscribe=subscribe,
in_bind=False)
self.topics.append(topic)
def consume_in_thread(self):
"""Runs the ZmqProxy service."""
ipc_dir = CONF.rpc_zmq_ipc_dir
consume_in = "tcp://%s:%s" % \
(CONF.rpc_zmq_bind_address,
CONF.rpc_zmq_port)
consumption_proxy = InternalContext(None)
try:
os.makedirs(ipc_dir)
except os.error:
if not os.path.isdir(ipc_dir):
with excutils.save_and_reraise_exception():
LOG.error(_("Required IPC directory does not exist at"
" %s") % (ipc_dir, ))
try:
self.register(consumption_proxy,
consume_in,
zmq.PULL)
except zmq.ZMQError:
if os.access(ipc_dir, os.X_OK):
with excutils.save_and_reraise_exception():
LOG.error(_("Permission denied to IPC directory at"
" %s") % (ipc_dir, ))
with excutils.save_and_reraise_exception():
LOG.error(_("Could not create ZeroMQ receiver daemon. "
"Socket may already be in use."))
super(ZmqProxy, self).consume_in_thread()
def create_xcat_mgt_network(self, zhcp, mgt_ip, mgt_mask, mgt_vswitch):
url = self._xcat_url.xdsh("/%s" % zhcp)
xdsh_commands = ('command=smcli Virtual_Network_Adapter_Query'
' -T %s -v 0800') % self._xcat_node_name
body = [xdsh_commands]
result = xcatutils.xcat_request("PUT", url, body)['data'][0][0]
code = result.split("\n")
# return code 212: Adapter does not exist
new_nic = ''
if len(code) == 4 and code[1].split(': ')[2] == '212':
new_nic = ('vmcp define nic 0800 type qdio\n' +
'vmcp couple 0800 system %s\n' % (mgt_vswitch))
elif len(code) == 7:
status = code[4].split(': ')[2]
if status == 'Coupled and active':
# we just assign the IP/mask,
# no matter if it is assigned or not
LOG.info(_("Assign IP for NIC 800."))
else:
LOG.error(_("NIC 800 staus is unknown."))
return
else:
raise exception.zvmException(msg="Unknown information from SMAPI")
url = self._xcat_url.xdsh("/%s") % self._xcat_node_name
cmd = new_nic + ('/usr/bin/perl /usr/sbin/sspqeth2.pl ' +
'-a %s -d 0800 0801 0802 -e eth2 -m %s -g %s' %
(mgt_ip, mgt_mask, mgt_ip))
xdsh_commands = 'command=%s' % cmd
body = [xdsh_commands]
xcatutils.xcat_request("PUT", url, body)
def __call__(self, message_data):
"""Consumer callback to call a method on a proxy object.
Parses the message for validity and fires off a thread to call the
proxy object method.
Message data should be a dictionary with two keys:
method: string representing the method to call
args: dictionary of arg: value
Example: {'method': 'echo', 'args': {'value': 42}}
"""
# It is important to clear the context here, because at this point
# the previous context is stored in local.store.context
if hasattr(local.store, 'context'):
del local.store.context
rpc_common._safe_log(LOG.debug, _('received %s'), message_data)
self.msg_id_cache.check_duplicate_message(message_data)
ctxt = unpack_context(self.conf, message_data)
method = message_data.get('method')
args = message_data.get('args', {})
version = message_data.get('version')
namespace = message_data.get('namespace')
if not method:
LOG.warn(_('no method for message: %s') % message_data)
ctxt.reply(_('No method for message: %s') % message_data,
connection_pool=self.connection_pool)
return
self.pool.spawn_n(self._process_data, ctxt, version, method, namespace,
args)
def _wait_for_exit_or_signal(self, ready_callback=None):
status = None
signo = 0
LOG.debug(_('Full set of CONF:'))
CONF.log_opt_values(LOG, std_logging.DEBUG)
try:
if ready_callback:
ready_callback()
super(ServiceLauncher, self).wait()
except SignalExit as exc:
signame = _signo_to_signame(exc.signo)
LOG.info(_('Caught %s, exiting'), signame)
status = exc.code
signo = exc.signo
except SystemExit as exc:
status = exc.code
finally:
self.stop()
if rpc:
try:
rpc.cleanup()
except Exception:
# We're shutting down, so it doesn't matter at this point.
LOG.exception(_('Exception during rpc cleanup.'))
return status, signo
def _inner():
if initial_delay:
greenthread.sleep(initial_delay)
try:
while self._running:
idle = self.f(*self.args, **self.kw)
if not self._running:
break
if periodic_interval_max is not None:
idle = min(idle, periodic_interval_max)
LOG.debug(
_('Dynamic looping call sleeping for %.02f '
'seconds'), idle)
greenthread.sleep(idle)
except LoopingCallDone as e:
self.stop()
done.send(e.retvalue)
except Exception:
LOG.exception(_('in dynamic looping call'))
done.send_exception(*sys.exc_info())
return
else:
done.send(True)
def publisher(waiter):
LOG.info(_("Creating proxy for topic: %s"), topic)
try:
# The topic is received over the network,
# don't trust this input.
if self.badchars.search(topic) is not None:
emsg = _("Topic contained dangerous characters.")
LOG.warn(emsg)
raise RPCException(emsg)
out_sock = ZmqSocket("ipc://%s/zmq_topic_%s" %
(ipc_dir, topic),
sock_type, bind=True)
except RPCException:
waiter.send_exception(*sys.exc_info())
return
self.topic_proxy[topic] = eventlet.queue.LightQueue(
CONF.rpc_zmq_topic_backlog)
self.sockets.append(out_sock)
# It takes some time for a pub socket to open,
# before we can have any faith in doing a send() to it.
if sock_type == zmq.PUB:
eventlet.sleep(.5)
waiter.send(True)
while(True):
data = self.topic_proxy[topic].get()
out_sock.send(data, copy=False)
def wait(self):
"""Loop waiting on children to die and respawning as necessary."""
LOG.debug(_('Full set of CONF:'))
CONF.log_opt_values(LOG, std_logging.DEBUG)
while self.running:
wrap = self._wait_child()
if not wrap:
# Yield to other threads if no children have exited
# Sleep for a short time to avoid excessive CPU usage
# (see bug #1095346)
eventlet.greenthread.sleep(.01)
continue
while self.running and len(wrap.children) < wrap.workers:
self._start_child(wrap)
if self.sigcaught:
signame = {signal.SIGTERM: 'SIGTERM',
signal.SIGINT: 'SIGINT'}[self.sigcaught]
LOG.info(_('Caught %s, stopping children'), signame)
for pid in self.children:
try:
os.kill(pid, signal.SIGTERM)
except OSError as exc:
if exc.errno != errno.ESRCH:
raise
# Wait for children to die
if self.children:
LOG.info(_('Waiting on %d children to exit'), len(self.children))
while self.children:
self._wait_child()
def run_periodic_tasks(self, context, raise_on_error=False):
"""Tasks to be run at a periodic interval."""
idle_for = DEFAULT_INTERVAL
for task_name, task in self._periodic_tasks:
full_task_name = '.'.join([self.__class__.__name__, task_name])
now = timeutils.utcnow()
spacing = self._periodic_spacing[task_name]
last_run = self._periodic_last_run[task_name]
# If a periodic task is _nearly_ due, then we'll run it early
if spacing is not None and last_run is not None:
due = last_run + datetime.timedelta(seconds=spacing)
if not timeutils.is_soon(due, 0.2):
idle_for = min(idle_for, timeutils.delta_seconds(now, due))
continue
if spacing is not None:
idle_for = min(idle_for, spacing)
LOG.debug(_("Running periodic task %(full_task_name)s"),
{"full_task_name": full_task_name})
self._periodic_last_run[task_name] = timeutils.utcnow()
try:
task(self, context)
except Exception as e:
if raise_on_error:
raise
LOG.exception(_("Error during %(full_task_name)s: %(e)s"),
{"full_task_name": full_task_name, "e": e})
time.sleep(0)
return idle_for
def _wait_child(self):
try:
# Don't block if no child processes have exited
pid, status = os.waitpid(0, os.WNOHANG)
if not pid:
return None
except OSError as exc:
if exc.errno not in (errno.EINTR, errno.ECHILD):
raise
return None
if os.WIFSIGNALED(status):
sig = os.WTERMSIG(status)
LOG.info(_('Child %(pid)d killed by signal %(sig)d'),
dict(pid=pid, sig=sig))
else:
code = os.WEXITSTATUS(status)
LOG.info(_('Child %(pid)s exited with status %(code)d'),
dict(pid=pid, code=code))
if pid not in self.children:
LOG.warning(_('pid %d not in child list'), pid)
return None
wrap = self.children.pop(pid)
wrap.children.remove(pid)
return wrap
def _inner():
if initial_delay:
greenthread.sleep(initial_delay)
try:
while self._running:
start = timeutils.utcnow()
self.f(*self.args, **self.kw)
end = timeutils.utcnow()
if not self._running:
break
delay = interval - timeutils.delta_seconds(start, end)
print "## delay=%s" % delay
if delay <= 0:
LOG.warn(
_('task run outlasted interval by %s sec') %
-delay)
greenthread.sleep(delay if delay > 0 else 0)
except LoopingCallDone as e:
print "#### exception=%s" % e.retvalue
self.stop()
done.send(e.retvalue)
except Exception:
LOG.exception(_('in fixed duration looping call'))
done.send_exception(*sys.exc_info())
return
else:
done.send(True)
def create_xcat_mgt_network(self, zhcp, mgt_ip, mgt_mask, mgt_vswitch):
url = self._xcat_url.xdsh("/%s" % zhcp)
xdsh_commands = ('command=smcli Virtual_Network_Adapter_Query'
' -T %s -v 0800') % self._xcat_node_name
body = [xdsh_commands]
result = xcatutils.xcat_request("PUT", url, body)['data'][0][0]
code = result.split("\n")
# return code 212: Adapter does not exist
new_nic = ''
if len(code) == 4 and code[1].split(': ')[2] == '212':
new_nic = ('vmcp define nic 0800 type qdio\n' +
'vmcp couple 0800 system %s\n' % (mgt_vswitch))
elif len(code) == 7:
status = code[4].split(': ')[2]
if status == 'Coupled and active':
# we just assign the IP/mask,
# no matter if it is assigned or not
LOG.info(_("Assign IP for NIC 800."))
else:
LOG.error(_("NIC 800 staus is unknown."))
return
else:
raise exception.zvmException(
msg="Unknown information from SMAPI")
url = self._xcat_url.xdsh("/%s") % self._xcat_node_name
cmd = new_nic + ('/usr/bin/perl /usr/sbin/sspqeth2.pl ' +
'-a %s -d 0800 0801 0802 -e eth2 -m %s -g %s'
% (mgt_ip, mgt_mask, mgt_ip))
xdsh_commands = 'command=%s' % cmd
body = [xdsh_commands]
xcatutils.xcat_request("PUT", url, body)
def _start_child(self, wrap):
if len(wrap.forktimes) > wrap.workers:
# Limit ourselves to one process a second (over the period of
# number of workers * 1 second). This will allow workers to
# start up quickly but ensure we don't fork off children that
# die instantly too quickly.
if time.time() - wrap.forktimes[0] < wrap.workers:
LOG.info(_('Forking too fast, sleeping'))
time.sleep(1)
wrap.forktimes.pop(0)
wrap.forktimes.append(time.time())
pid = os.fork()
if pid == 0:
launcher = self._child_process(wrap.service)
while True:
self._child_process_handle_signal()
status, signo = self._child_wait_for_exit_or_signal(launcher)
if not _is_sighup_and_daemon(signo):
break
launcher.restart()
os._exit(status)
LOG.info(_('Started child %d'), pid)
wrap.children.add(pid)
self.children[pid] = wrap
return pid
def _callback_handler(self, message, callback):
"""Call callback with deserialized message.
Messages that are processed without exception are ack'ed.
If the message processing generates an exception, it will be
ack'ed if ack_on_error=True. Otherwise it will be .requeue()'ed.
"""
try:
msg = rpc_common.deserialize_msg(message.payload)
callback(msg)
except Exception:
if self.ack_on_error:
LOG.exception(
_("Failed to process message"
" ... skipping it."))
message.ack()
else:
LOG.exception(
_("Failed to process message"
" ... will requeue."))
message.requeue()
else:
message.ack()
def __init__(self, addr, zmq_type, bind=True, subscribe=None):
self.sock = _get_ctxt().socket(zmq_type)
self.addr = addr
self.type = zmq_type
self.subscriptions = []
# Support failures on sending/receiving on wrong socket type.
self.can_recv = zmq_type in (zmq.PULL, zmq.SUB)
self.can_send = zmq_type in (zmq.PUSH, zmq.PUB)
self.can_sub = zmq_type in (zmq.SUB, )
# Support list, str, & None for subscribe arg (cast to list)
do_sub = {
list: subscribe,
str: [subscribe],
type(None): []
}[type(subscribe)]
for f in do_sub:
self.subscribe(f)
str_data = {'addr': addr, 'type': self.socket_s(),
'subscribe': subscribe, 'bind': bind}
LOG.debug(_("Connecting to %(addr)s with %(type)s"), str_data)
LOG.debug(_("-> Subscribed to %(subscribe)s"), str_data)
LOG.debug(_("-> bind: %(bind)s"), str_data)
try:
if bind:
self.sock.bind(addr)
else:
self.sock.connect(addr)
except Exception:
raise RPCException(_("Could not open socket."))
def _process_data(self, ctxt, version, method, namespace, args):
"""Process a message in a new thread.
If the proxy object we have has a dispatch method
(see rpc.dispatcher.RpcDispatcher), pass it the version,
method, and args and let it dispatch as appropriate. If not, use
the old behavior of magically calling the specified method on the
proxy we have here.
"""
ctxt.update_store()
try:
rval = self.proxy.dispatch(ctxt, version, method, namespace, **args)
# Check if the result was a generator
if inspect.isgenerator(rval):
for x in rval:
ctxt.reply(x, None, connection_pool=self.connection_pool)
else:
ctxt.reply(rval, None, connection_pool=self.connection_pool)
# This final None tells multicall that it is done.
ctxt.reply(ending=True, connection_pool=self.connection_pool)
except rpc_common.ClientException as e:
LOG.debug(_("Expected exception during message handling (%s)") % e._exc_info[1])
ctxt.reply(None, e._exc_info, connection_pool=self.connection_pool, log_failure=False)
except Exception:
# sys.exc_info() is deleted by LOG.exception().
exc_info = sys.exc_info()
LOG.error(_("Exception during message handling"), exc_info=exc_info)
ctxt.reply(None, exc_info, connection_pool=self.connection_pool)
def _process_data(self, ctxt, version, method, namespace, args):
"""Process a message in a new thread.
If the proxy object we have has a dispatch method
(see rpc.dispatcher.RpcDispatcher), pass it the version,
method, and args and let it dispatch as appropriate. If not, use
the old behavior of magically calling the specified method on the
proxy we have here.
"""
ctxt.update_store()
try:
rval = self.proxy.dispatch(ctxt, version, method, namespace,
**args)
# Check if the result was a generator
if inspect.isgenerator(rval):
for x in rval:
ctxt.reply(x, None, connection_pool=self.connection_pool)
else:
ctxt.reply(rval, None, connection_pool=self.connection_pool)
# This final None tells multicall that it is done.
ctxt.reply(ending=True, connection_pool=self.connection_pool)
except rpc_common.ClientException as e:
LOG.debug(
_('Expected exception during message handling (%s)') %
e._exc_info[1])
ctxt.reply(None,
e._exc_info,
connection_pool=self.connection_pool,
log_failure=False)
except Exception:
# sys.exc_info() is deleted by LOG.exception().
exc_info = sys.exc_info()
LOG.error(_('Exception during message handling'),
exc_info=exc_info)
ctxt.reply(None, exc_info, connection_pool=self.connection_pool)
def __call__(self, message_data):
"""Consumer callback to call a method on a proxy object.
Parses the message for validity and fires off a thread to call the
proxy object method.
Message data should be a dictionary with two keys:
method: string representing the method to call
args: dictionary of arg: value
Example: {'method': 'echo', 'args': {'value': 42}}
"""
# It is important to clear the context here, because at this point
# the previous context is stored in local.store.context
if hasattr(local.store, "context"):
del local.store.context
rpc_common._safe_log(LOG.debug, _("received %s"), message_data)
self.msg_id_cache.check_duplicate_message(message_data)
ctxt = unpack_context(self.conf, message_data)
method = message_data.get("method")
args = message_data.get("args", {})
version = message_data.get("version")
namespace = message_data.get("namespace")
if not method:
LOG.warn(_("no method for message: %s") % message_data)
ctxt.reply(_("No method for message: %s") % message_data, connection_pool=self.connection_pool)
return
self.pool.spawn_n(self._process_data, ctxt, version, method, namespace, args)
def create_consumer(self, topic, proxy, fanout=False):
# Register with matchmaker.
_get_matchmaker().register(topic, CONF.rpc_zmq_host)
# Subscription scenarios
if fanout:
sock_type = zmq.SUB
subscribe = ('', fanout)[type(fanout) == str]
topic = 'fanout~' + topic.split('.', 1)[0]
else:
sock_type = zmq.PULL
subscribe = None
topic = '.'.join((topic.split('.', 1)[0], CONF.rpc_zmq_host))
if topic in self.topics:
LOG.info(_("Skipping topic registration. Already registered."))
return
# Receive messages from (local) proxy
inaddr = "ipc://%s/zmq_topic_%s" % \
(CONF.rpc_zmq_ipc_dir, topic)
LOG.debug(_("Consumer is a zmq.%s"),
['PULL', 'SUB'][sock_type == zmq.SUB])
self.reactor.register(proxy, inaddr, sock_type,
subscribe=subscribe, in_bind=False)
self.topics.append(topic)
def _multi_send(method, context, topic, msg, timeout=None,
envelope=False, _msg_id=None):
"""Wraps the sending of messages.
Dispatches to the matchmaker and sends message to all relevant hosts.
"""
conf = CONF
LOG.debug(_("%(msg)s") % {'msg': ' '.join(map(pformat, (topic, msg)))})
queues = _get_matchmaker().queues(topic)
LOG.debug(_("Sending message(s) to: %s"), queues)
# Don't stack if we have no matchmaker results
if not queues:
LOG.warn(_("No matchmaker results. Not casting."))
# While not strictly a timeout, callers know how to handle
# this exception and a timeout isn't too big a lie.
raise rpc_common.Timeout(_("No match from matchmaker."))
# This supports brokerless fanout (addresses > 1)
for queue in queues:
(_topic, ip_addr) = queue
_addr = "tcp://%s:%s" % (ip_addr, conf.rpc_zmq_port)
if method.__name__ == '_cast':
eventlet.spawn_n(method, _addr, context,
_topic, msg, timeout, envelope,
_msg_id)
return
return method(_addr, context, _topic, msg, timeout,
envelope)
def _error_callback(exc):
if isinstance(exc, qpid_exceptions.Empty):
LOG.debug(_('Timed out waiting for RPC response: %s') %
str(exc))
raise rpc_common.Timeout()
else:
LOG.exception(_('Failed to consume message from queue: %s') %
str(exc))
def _error_callback(exc):
if isinstance(exc, qpid_exceptions.Empty):
LOG.debug(
_('Timed out waiting for RPC response: %s') % str(exc))
raise rpc_common.Timeout()
else:
LOG.exception(
_('Failed to consume message from queue: %s') % str(exc))
def inner(*args, **kwargs):
try:
with lock(name, lock_file_prefix, external, lock_path):
LOG.debug(_('Got semaphore / lock "%(function)s"'),
{'function': f.__name__})
return f(*args, **kwargs)
finally:
LOG.debug(_('Semaphore / lock released "%(function)s"'),
{'function': f.__name__})
def add_vswitch(self, zhcp, name, rdev,
controller='*',
connection=1, queue_mem=8, router=0, network_type=2, vid=0,
port_type=1, update=1, gvrp=2, native_vid=1):
'''
connection:0-unspecified 1-Actice 2-non-Active
router:0-unspecified 1-nonrouter 2-prirouter
type:0-unspecified 1-IP 2-ethernet
vid:1-4094 for access port defaut vlan
port_type:0-unspecified 1-access 2-trunk
update:0-unspecified 1-create 2-create and add to system
configuration file
gvrp:0-unspecified 1-gvrp 2-nogvrp
'''
if (self._does_vswitch_exist(zhcp, name)):
LOG.info(_('Vswitch %s already exists.'), name)
return
# if vid = 0, port_type, gvrp and native_vlanid are not
# allowed to specified
if not len(vid):
vid = 0
port_type = 0
gvrp = 0
native_vid = -1
else:
vid = str(vid[0][0]) + '-' + str(vid[0][1])
userid = self.get_zhcp_userid(zhcp)
url = self._xcat_url.xdsh("/%s" % zhcp)
commands = '/opt/zhcp/bin/smcli Virtual_Network_Vswitch_Create'
commands += " -T %s" % userid
commands += ' -n %s' % name
if rdev:
commands += " -r %s" % rdev.replace(',', ' ')
#commands += " -a %s" % osa_name
if controller != '*':
commands += " -i %s" % controller
commands += " -c %s" % connection
commands += " -q %s" % queue_mem
commands += " -e %s" % router
commands += " -t %s" % network_type
commands += " -v %s" % vid
commands += " -p %s" % port_type
commands += " -u %s" % update
commands += " -G %s" % gvrp
commands += " -V %s" % native_vid
xdsh_commands = 'command=%s' % commands
body = [xdsh_commands]
result = xcatutils.xcat_request("PUT", url, body)
if (result['errorcode'][0][0] != '0') or \
(not self._does_vswitch_exist(zhcp, name)):
raise exception.zvmException(
msg=("switch: %s add failed, %s") %
(name, result['data'][0][0]))
LOG.info(_('Created vswitch %s done.'), name)
def _error_callback(exc):
if isinstance(exc, socket.timeout):
LOG.debug(_('Timed out waiting for RPC response: %s') %
str(exc))
raise rpc_common.Timeout()
else:
LOG.exception(_('Failed to consume message from queue: %s') %
str(exc))
info['do_consume'] = True
def _error_callback(exc):
if isinstance(exc, socket.timeout):
LOG.debug(
_('Timed out waiting for RPC response: %s') % str(exc))
raise rpc_common.Timeout()
else:
LOG.exception(
_('Failed to consume message from queue: %s') % str(exc))
info['do_consume'] = True
def reconnect(self):
"""Handles reconnecting and re-establishing queues.
Will retry up to self.max_retries number of times.
self.max_retries = 0 means to retry forever.
Sleep between tries, starting at self.interval_start
seconds, backing off self.interval_stepping number of seconds
each attempt.
"""
attempt = 0
while True:
params = self.params_list[attempt % len(self.params_list)]
attempt += 1
try:
self._connect(params)
return
except (IOError, self.connection_errors) as e:
pass
except Exception as e:
# NOTE(comstud): Unfortunately it's possible for amqplib
# to return an error not covered by its transport
# connection_errors in the case of a timeout waiting for
# a protocol response. (See paste link in LP888621)
# So, we check all exceptions for 'timeout' in them
# and try to reconnect in this case.
if 'timeout' not in str(e):
raise
log_info = {}
log_info['err_str'] = str(e)
log_info['max_retries'] = self.max_retries
log_info.update(params)
if self.max_retries and attempt == self.max_retries:
LOG.error(
_('Unable to connect to AMQP server on '
'%(hostname)s:%(port)d after %(max_retries)d '
'tries: %(err_str)s') % log_info)
# NOTE(comstud): Copied from original code. There's
# really no better recourse because if this was a queue we
# need to consume on, we have no way to consume anymore.
sys.exit(1)
if attempt == 1:
sleep_time = self.interval_start or 1
elif attempt > 1:
sleep_time += self.interval_stepping
if self.interval_max:
sleep_time = min(sleep_time, self.interval_max)
log_info['sleep_time'] = sleep_time
LOG.error(
_('AMQP server on %(hostname)s:%(port)d is '
'unreachable: %(err_str)s. Trying again in '
'%(sleep_time)d seconds.') % log_info)
time.sleep(sleep_time)
def _process_data(self, message_data):
msg_id = message_data.pop('_msg_id', None)
waiter = self._call_waiters.get(msg_id)
if not waiter:
LOG.warn(_('No calling threads waiting for msg_id : %(msg_id)s'
', message : %(data)s'), {'msg_id': msg_id,
'data': message_data})
LOG.warn(_('_call_waiters: %s') % str(self._call_waiters))
else:
waiter.put(message_data)
def re_grant_user(self, zhcp):
"""Grant user again after z/VM is re-IPLed"""
ports_info = self._get_userid_vswitch_vlan_id_mapping(zhcp)
records_num = 0
cmd = ''
def run_command(command):
xdsh_commands = 'command=%s' % command
body = [xdsh_commands]
url = self._xcat_url.xdsh("/%s" % zhcp)
xcatutils.xcat_request("PUT", url, body)
for (port_id, port) in ports_info.items():
if port['userid'] is None or port['vswitch'] is None:
continue
if len(port['userid']) == 0 or len(port['vswitch']) == 0:
continue
cmd += '/opt/zhcp/bin/smcli '
cmd += 'Virtual_Network_Vswitch_Set_Extended '
cmd += '-T %s ' % port['userid']
cmd += '-k switch_name=%s ' % port['vswitch']
cmd += '-k grant_userid=%s' % port['userid']
try:
if int(port['vlan_id']) in range(1, 4094):
cmd += ' -k user_vlan_id=%s\n' % port['vlan_id']
else:
cmd += '\n'
except ValueError:
# just in case there are bad records of vlan info which
# could be a string
LOG.warn(_("Unknown vlan '%(vlan)s' for user %(user)s."), {
'vlan': port['vlan_id'],
'user': port['userid']
})
cmd += '\n'
continue
records_num += 1
if records_num >= self._MAX_REGRANT_USER_NUMBER:
try:
commands = 'echo -e "#!/bin/sh\n%s" > grant.sh' % cmd[:-1]
run_command(commands)
commands = 'sh grant.sh;rm -f grant.sh'
run_command(commands)
records_num = 0
cmd = ''
except Exception:
LOG.warn(_("Grant user failed"))
if len(cmd) > 0:
commands = 'echo -e "#!/bin/sh\n%s" > grant.sh' % cmd[:-1]
run_command(commands)
commands = 'sh grant.sh;rm -f grant.sh'
run_command(commands)
return ports_info
def notify(context, publisher_id, event_type, priority, payload):
"""Sends a notification using the specified driver
:param publisher_id: the source worker_type.host of the message
:param event_type: the literal type of event (ex. Instance Creation)
:param priority: patterned after the enumeration of Python logging
levels in the set (DEBUG, WARN, INFO, ERROR, CRITICAL)
:param payload: A python dictionary of attributes
Outgoing message format includes the above parameters, and appends the
following:
message_id
a UUID representing the id for this notification
timestamp
the GMT timestamp the notification was sent at
The composite message will be constructed as a dictionary of the above
attributes, which will then be sent via the transport mechanism defined
by the driver.
Message example::
{'message_id': str(uuid.uuid4()),
'publisher_id': 'compute.host1',
'timestamp': timeutils.utcnow(),
'priority': 'WARN',
'event_type': 'compute.create_instance',
'payload': {'instance_id': 12, ... }}
"""
if priority not in log_levels:
raise BadPriorityException(
_('%s not in valid priorities') % priority)
# Ensure everything is JSON serializable.
payload = jsonutils.to_primitive(payload, convert_instances=True)
msg = dict(message_id=str(uuid.uuid4()),
publisher_id=publisher_id,
event_type=event_type,
priority=priority,
payload=payload,
timestamp=str(timeutils.utcnow()))
for driver in _get_drivers():
try:
driver.notify(context, msg)
except Exception as e:
LOG.exception(_("Problem '%(e)s' attempting to "
"send to notification system. "
"Payload=%(payload)s")
% dict(e=e, payload=payload))
def reconnect(self):
"""Handles reconnecting and re-establishing queues.
Will retry up to self.max_retries number of times.
self.max_retries = 0 means to retry forever.
Sleep between tries, starting at self.interval_start
seconds, backing off self.interval_stepping number of seconds
each attempt.
"""
attempt = 0
while True:
params = self.params_list[attempt % len(self.params_list)]
attempt += 1
try:
self._connect(params)
return
except (IOError, self.connection_errors) as e:
pass
except Exception as e:
# NOTE(comstud): Unfortunately it's possible for amqplib
# to return an error not covered by its transport
# connection_errors in the case of a timeout waiting for
# a protocol response. (See paste link in LP888621)
# So, we check all exceptions for 'timeout' in them
# and try to reconnect in this case.
if 'timeout' not in str(e):
raise
log_info = {}
log_info['err_str'] = str(e)
log_info['max_retries'] = self.max_retries
log_info.update(params)
if self.max_retries and attempt == self.max_retries:
LOG.error(_('Unable to connect to AMQP server on '
'%(hostname)s:%(port)d after %(max_retries)d '
'tries: %(err_str)s') % log_info)
# NOTE(comstud): Copied from original code. There's
# really no better recourse because if this was a queue we
# need to consume on, we have no way to consume anymore.
sys.exit(1)
if attempt == 1:
sleep_time = self.interval_start or 1
elif attempt > 1:
sleep_time += self.interval_stepping
if self.interval_max:
sleep_time = min(sleep_time, self.interval_max)
log_info['sleep_time'] = sleep_time
LOG.error(_('AMQP server on %(hostname)s:%(port)d is '
'unreachable: %(err_str)s. Trying again in '
'%(sleep_time)d seconds.') % log_info)
time.sleep(sleep_time)
def _process_data(self, message_data):
msg_id = message_data.pop("_msg_id", None)
waiter = self._call_waiters.get(msg_id)
if not waiter:
LOG.warn(
_("No calling threads waiting for msg_id : %(msg_id)s" ", message : %(data)s"),
{"msg_id": msg_id, "data": message_data},
)
LOG.warn(_("_call_waiters: %s") % str(self._call_waiters))
else:
waiter.put(message_data)
def re_grant_user(self, zhcp):
"""Grant user again after z/VM is re-IPLed"""
ports_info = self._get_userid_vswitch_vlan_id_mapping(zhcp)
records_num = 0
cmd = ''
def run_command(command):
xdsh_commands = 'command=%s' % command
body = [xdsh_commands]
url = self._xcat_url.xdsh("/%s" % zhcp)
xcatutils.xcat_request("PUT", url, body)
for (port_id, port) in ports_info.items():
if port['userid'] is None or port['vswitch'] is None:
continue
if len(port['userid']) == 0 or len(port['vswitch']) == 0:
continue
cmd += '/opt/zhcp/bin/smcli '
cmd += 'Virtual_Network_Vswitch_Set_Extended '
cmd += '-T %s ' % port['userid']
cmd += '-k switch_name=%s ' % port['vswitch']
cmd += '-k grant_userid=%s' % port['userid']
try:
if int(port['vlan_id']) in range(1, 4094):
cmd += ' -k user_vlan_id=%s\n' % port['vlan_id']
else:
cmd += '\n'
except ValueError:
# just in case there are bad records of vlan info which
# could be a string
LOG.warn(_("Unknown vlan '%(vlan)s' for user %(user)s."),
{'vlan': port['vlan_id'], 'user': port['userid']})
cmd += '\n'
continue
records_num += 1
if records_num >= self._MAX_REGRANT_USER_NUMBER:
try:
commands = 'echo -e "#!/bin/sh\n%s" > grant.sh' % cmd[:-1]
run_command(commands)
commands = 'sh grant.sh;rm -f grant.sh'
run_command(commands)
records_num = 0
cmd = ''
except Exception:
LOG.warn(_("Grant user failed"))
if len(cmd) > 0:
commands = 'echo -e "#!/bin/sh\n%s" > grant.sh' % cmd[:-1]
run_command(commands)
commands = 'sh grant.sh;rm -f grant.sh'
run_command(commands)
return ports_info
def notify(context, publisher_id, event_type, priority, payload):
"""Sends a notification using the specified driver
:param publisher_id: the source worker_type.host of the message
:param event_type: the literal type of event (ex. Instance Creation)
:param priority: patterned after the enumeration of Python logging
levels in the set (DEBUG, WARN, INFO, ERROR, CRITICAL)
:param payload: A python dictionary of attributes
Outgoing message format includes the above parameters, and appends the
following:
message_id
a UUID representing the id for this notification
timestamp
the GMT timestamp the notification was sent at
The composite message will be constructed as a dictionary of the above
attributes, which will then be sent via the transport mechanism defined
by the driver.
Message example::
{'message_id': str(uuid.uuid4()),
'publisher_id': 'compute.host1',
'timestamp': timeutils.utcnow(),
'priority': 'WARN',
'event_type': 'compute.create_instance',
'payload': {'instance_id': 12, ... }}
"""
if priority not in log_levels:
raise BadPriorityException(_('%s not in valid priorities') % priority)
# Ensure everything is JSON serializable.
payload = jsonutils.to_primitive(payload, convert_instances=True)
msg = dict(message_id=str(uuid.uuid4()),
publisher_id=publisher_id,
event_type=event_type,
priority=priority,
payload=payload,
timestamp=str(timeutils.utcnow()))
for driver in _get_drivers():
try:
driver.notify(context, msg)
except Exception as e:
LOG.exception(
_("Problem '%(e)s' attempting to "
"send to notification system. "
"Payload=%(payload)s") % dict(e=e, payload=payload))
def _process_data(self, message_data):
msg_id = message_data.pop('_msg_id', None)
waiter = self._call_waiters.get(msg_id)
if not waiter:
LOG.warn(
_('No calling threads waiting for msg_id : %(msg_id)s'
', message : %(data)s'), {
'msg_id': msg_id,
'data': message_data
})
LOG.warn(_('_call_waiters: %s') % str(self._call_waiters))
else:
waiter.put(message_data)
def __init__(self, info=None, topic=None, method=None):
"""Initiates Timeout object.
:param info: Extra info to convey to the user
:param topic: The topic that the rpc call was sent to
:param rpc_method_name: The name of the rpc method being
called
"""
self.info = info
self.topic = topic
self.method = method
super(Timeout, self).__init__(None,
info=info or _('<unknown>'),
topic=topic or _('<unknown>'),
method=method or _('<unknown>'))
