def release(self):
try:
self.unlock()
self.lockfile.close()
LOG.debug('Released file lock "%s"', self.fname)
except IOError:
LOG.exception(_LE("Could not release the acquired lock `%s`"),
self.fname)
def release(self):
try:
self.unlock()
self.lockfile.close()
LOG.debug('Released file lock "%s"', self.fname)
except IOError:
LOG.exception(_LE("Could not release the acquired lock `%s`"),
self.fname)
def _publish(self, payload):
"""Publishes a payload to the passed exchange. If it encounters a
failure, will store the payload for later.
:param Payload payload: The payload to send.
"""
LOG.debug(
_("Sending message to %(name)s [%(topic)s]") % {
'name': self._exchange_name,
'topic': payload.topic
})
# First check, are we closing?
if self._closing:
LOG.warning(_LW("Cannot send message, publisher is closing."))
if payload not in self._pending:
self._pending.append(payload)
return
# Second check, are we open?
if not self._open:
LOG.debug(_("Cannot send message, publisher is connecting."))
if payload not in self._pending:
self._pending.append(payload)
self._reconnect()
return
# Third check, are we in a sane state? This should never happen,
# but just in case...
if not self._connection or not self._channel:
LOG.error(
_LE("Cannot send message, publisher is "
"an unexpected state."))
if payload not in self._pending:
self._pending.append(payload)
self._reconnect()
return
# Try to send a message. If we fail, schedule a reconnect and store
# the message.
try:
self._channel.basic_publish(
self._exchange_name, payload.topic,
json.dumps(payload.payload, ensure_ascii=False),
self._properties)
if payload in self._pending:
self._pending.remove(payload)
return True
except ConnectionClosed as cc:
LOG.warning(_LW("Attempted to send message on closed connection."))
LOG.debug(cc)
self._open = False
if payload not in self._pending:
self._pending.append(payload)
self._reconnect()
return False
def _publish(self, payload):
"""Publishes a payload to the passed exchange. If it encounters a
failure, will store the payload for later.
:param Payload payload: The payload to send.
"""
LOG.debug(_("Sending message to %(name)s [%(topic)s]") %
{'name': self._exchange_name, 'topic': payload.topic})
# First check, are we closing?
if self._closing:
LOG.warning(_LW("Cannot send message, publisher is closing."))
if payload not in self._pending:
self._pending.append(payload)
return
# Second check, are we open?
if not self._open:
LOG.debug(_("Cannot send message, publisher is connecting."))
if payload not in self._pending:
self._pending.append(payload)
self._reconnect()
return
# Third check, are we in a sane state? This should never happen,
# but just in case...
if not self._connection or not self._channel:
LOG.error(_LE("Cannot send message, publisher is "
"an unexpected state."))
if payload not in self._pending:
self._pending.append(payload)
self._reconnect()
return
# Try to send a message. If we fail, schedule a reconnect and store
# the message.
try:
self._channel.basic_publish(self._exchange_name,
payload.topic,
json.dumps(payload.payload,
ensure_ascii=False),
self._properties)
if payload in self._pending:
self._pending.remove(payload)
return True
except ConnectionClosed as cc:
LOG.warning(_LW("Attempted to send message on closed connection."))
LOG.debug(cc)
self._open = False
if payload not in self._pending:
self._pending.append(payload)
self._reconnect()
return False
def load_preferences(ext, defaults):
"""Load all plugin default preferences into our cache.
:param ext: The extension that's handling this event.
:param defaults: The current dict of default preferences.
"""
plugin_defaults = ext.obj.get_default_preferences()
for key in plugin_defaults:
if key in defaults:
# Let's not error out here.
LOG.error(_LE("Duplicate preference key %s found.") % (key,))
else:
defaults[key] = plugin_defaults[key]
