def start_router_component(self, id, config, details=None):
"""
Start an app component in this router worker.
:param id: The ID of the component to start.
:type id: str
:param config: The component configuration.
:type config: obj
"""
self.log.debug("{}.start_router_component".format(self.__class__.__name__),
id=id, config=config)
# prohibit starting a component twice
#
if id in self.components:
emsg = "Could not start component: a component with ID '{}'' is already running (or starting)".format(id)
self.log.error(emsg)
raise ApplicationError(u'crossbar.error.already_running', emsg)
# check configuration
#
try:
checkconfig.check_router_component(config)
except Exception as e:
emsg = "Invalid router component configuration: {}".format(e)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
else:
self.log.debug("Starting {type}-component on router.",
type=config['type'])
# resolve references to other entities
#
references = {}
for ref in config.get('references', []):
ref_type, ref_id = ref.split(':')
if ref_type == u'connection':
if ref_id in self._connections:
references[ref] = self._connections[ref_id]
else:
emsg = "cannot resolve reference '{}' - no '{}' with ID '{}'".format(ref, ref_type, ref_id)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
else:
emsg = "cannot resolve reference '{}' - invalid reference type '{}'".format(ref, ref_type)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
# create component config
#
realm = config['realm']
extra = config.get('extra', None)
component_config = ComponentConfig(realm=realm, extra=extra)
create_component = _appsession_loader(config)
# .. and create and add an WAMP application session to
# run the component next to the router
#
try:
session = create_component(component_config)
# any exception spilling out from user code in onXXX handlers is fatal!
def panic(fail, msg):
self.log.error(
"Fatal error in component: {msg} - {log_failure.value}",
msg=msg, log_failure=fail
)
session.disconnect()
session._swallow_error = panic
except Exception:
self.log.error(
"Component instantiation failed",
log_failure=Failure(),
)
raise
self.components[id] = RouterComponent(id, config, session)
self._router_session_factory.add(session, authrole=config.get('role', u'anonymous'))
self.log.debug("Added component {id}", id=id)
def start_router_component(self, id, config, details=None):
"""
Dynamically start an application component to run next to the router in "embedded mode".
:param id: The ID of the component to start.
:type id: str
:param config: The component configuration.
:type config: obj
"""
if self.debug:
log.msg(
"{}.start_router_component".format(self.__class__.__name__),
id, config)
## prohibit starting a component twice
##
if id in self.components:
emsg = "ERROR: could not start component - a component with ID '{}'' is already running (or starting)".format(
id)
log.msg(emsg)
raise ApplicationError('crossbar.error.already_running', emsg)
## check configuration
##
try:
checkconfig.check_router_component(config)
except Exception as e:
emsg = "ERROR: invalid router component configuration ({})".format(
e)
log.msg(emsg)
raise ApplicationError("crossbar.error.invalid_configuration",
emsg)
else:
if self.debug:
log.msg("Starting {}-component on router.".format(
config['type']))
realm = config['realm']
cfg = ComponentConfig(realm=realm, extra=config.get('extra', None))
if config['type'] == 'class':
try:
klassname = config['classname']
if self.debug:
log.msg("Starting class '{}'".format(klassname))
c = klassname.split('.')
module_name, klass_name = '.'.join(c[:-1]), c[-1]
module = importlib.import_module(module_name)
make = getattr(module, klass_name)
except Exception as e:
emsg = "Failed to import class '{}' - {}".format(klassname, e)
log.msg(emsg)
raise ApplicationError("crossbar.error.class_import_failed",
emsg)
elif config['type'] == 'wamplet':
try:
dist = config['package']
name = config['entrypoint']
if self.debug:
log.msg("Starting WAMPlet '{}/{}'".format(dist, name))
## make is supposed to make instances of ApplicationSession
make = pkg_resources.load_entry_point(
dist, 'autobahn.twisted.wamplet', name)
except Exception as e:
emsg = "Failed to import wamplet '{}/{}' - {}".format(
dist, name, e)
log.msg(emsg)
raise ApplicationError("crossbar.error.class_import_failed",
emsg)
else:
raise ApplicationError(
"crossbar.error.invalid_configuration",
"invalid component type '{}'".format(config['type']))
## .. and create and add an WAMP application session to
## run the component next to the router
##
try:
session = make(cfg)
except Exception as e:
raise ApplicationError("crossbar.error.class_import_failed",
str(e))
if not isinstance(session, ApplicationSession):
raise ApplicationError(
"crossbar.error.class_import_failed",
"session not derived of ApplicationSession")
self.components[id] = RouterComponent(id, config, session)
self.session_factory.add(session,
authrole=config.get('role', 'anonymous'))
def start_router_component(self, id, config, details=None):
"""
Dynamically start an application component to run next to the router in "embedded mode".
:param id: The ID of the component to start.
:type id: str
:param config: The component configuration.
:type config: obj
"""
self.log.debug("{}.start_router_component".format(self.__class__.__name__),
id=id, config=config)
# prohibit starting a component twice
#
if id in self.components:
emsg = "Could not start component: a component with ID '{}'' is already running (or starting)".format(id)
self.log.error(emsg)
raise ApplicationError(u'crossbar.error.already_running', emsg)
# check configuration
#
try:
checkconfig.check_router_component(config)
except Exception as e:
emsg = "Invalid router component configuration: {}".format(e)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
else:
self.log.debug("Starting {type}-component on router.",
type=config['type'])
# resolve references to other entities
#
references = {}
for ref in config.get('references', []):
ref_type, ref_id = ref.split(':')
if ref_type == u'connection':
if ref_id in self._connections:
references[ref] = self._connections[ref_id]
else:
emsg = "cannot resolve reference '{}' - no '{}' with ID '{}'".format(ref, ref_type, ref_id)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
else:
emsg = "cannot resolve reference '{}' - invalid reference type '{}'".format(ref, ref_type)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
# create component config
#
realm = config['realm']
extra = config.get('extra', None)
component_config = ComponentConfig(realm=realm, extra=extra)
create_component = _appsession_loader(config)
# .. and create and add an WAMP application session to
# run the component next to the router
#
try:
session = create_component(component_config)
# any exception spilling out from user code in onXXX handlers is fatal!
def panic(fail, msg):
self.log.error("Fatal error in component: {} - {}".format(msg, fail.value))
session.disconnect()
session._swallow_error = panic
except Exception as e:
msg = "{}".format(e).strip()
self.log.error("Component instantiation failed:\n\n{err}", err=msg)
raise
self.components[id] = RouterComponent(id, config, session)
self._router_session_factory.add(session, authrole=config.get('role', u'anonymous'))
self.log.debug("Added component {id}", id=id)
def start_router_component(self, id, config, details=None):
"""
Start an app component in this router worker.
:param id: The ID of the component to start.
:type id: str
:param config: The component configuration.
:type config: obj
"""
self.log.debug("{}.start_router_component".format(
self.__class__.__name__),
id=id,
config=config)
# prohibit starting a component twice
#
if id in self.components:
emsg = "Could not start component: a component with ID '{}'' is already running (or starting)".format(
id)
self.log.error(emsg)
raise ApplicationError(u'crossbar.error.already_running', emsg)
# check configuration
#
try:
checkconfig.check_router_component(config)
except Exception as e:
emsg = "Invalid router component configuration: {}".format(e)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration",
emsg)
else:
self.log.debug("Starting {type}-component on router.",
type=config['type'])
# resolve references to other entities
#
references = {}
for ref in config.get('references', []):
ref_type, ref_id = ref.split(':')
if ref_type == u'connection':
if ref_id in self._connections:
references[ref] = self._connections[ref_id]
else:
emsg = "cannot resolve reference '{}' - no '{}' with ID '{}'".format(
ref, ref_type, ref_id)
self.log.error(emsg)
raise ApplicationError(
u"crossbar.error.invalid_configuration", emsg)
else:
emsg = "cannot resolve reference '{}' - invalid reference type '{}'".format(
ref, ref_type)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration",
emsg)
# create component config
#
realm = config['realm']
extra = config.get('extra', None)
component_config = ComponentConfig(realm=realm, extra=extra)
create_component = _appsession_loader(config)
# .. and create and add an WAMP application session to
# run the component next to the router
#
try:
session = create_component(component_config)
# any exception spilling out from user code in onXXX handlers is fatal!
def panic(fail, msg):
self.log.error(
"Fatal error in component: {msg} - {log_failure.value}",
msg=msg,
log_failure=fail)
session.disconnect()
session._swallow_error = panic
except Exception:
self.log.error(
"Component instantiation failed",
log_failure=Failure(),
)
raise
def publish_stopped(session, details):
topic = self._uri_prefix + '.container.on_component_stop'
event = {u'id': id}
session.publish(topic,
event,
options=PublishOptions(exclude=details.caller))
return event
def publish_started(session, details):
topic = self._uri_prefix + '.container.on_component_start'
event = {u'id': id}
session.publish(topic,
event,
options=PublishOptions(exclude=details.caller))
return event
session.on('join', publish_started)
session.on('leave', publish_stopped)
self.components[id] = RouterComponent(id, config, session)
self._router_session_factory.add(session,
authrole=config.get(
'role', u'anonymous'))
self.log.debug("Added component {id}", id=id)
def start_router_component(self, id, config, details=None):
"""
Dynamically start an application component to run next to the router in "embedded mode".
:param id: The ID of the component to start.
:type id: str
:param config: The component configuration.
:type config: obj
"""
if self.debug:
log.msg("{}.start_router_component".format(self.__class__.__name__), id, config)
# prohibit starting a component twice
#
if id in self.components:
emsg = "ERROR: could not start component - a component with ID '{}'' is already running (or starting)".format(id)
log.msg(emsg)
raise ApplicationError('crossbar.error.already_running', emsg)
# check configuration
#
try:
checkconfig.check_router_component(config)
except Exception as e:
emsg = "ERROR: invalid router component configuration ({})".format(e)
log.msg(emsg)
raise ApplicationError("crossbar.error.invalid_configuration", emsg)
else:
if self.debug:
log.msg("Starting {}-component on router.".format(config['type']))
realm = config['realm']
cfg = ComponentConfig(realm=realm, extra=config.get('extra', None))
if config['type'] == 'class':
try:
klassname = config['classname']
if self.debug:
log.msg("Starting class '{}'".format(klassname))
c = klassname.split('.')
module_name, klass_name = '.'.join(c[:-1]), c[-1]
module = importlib.import_module(module_name)
make = getattr(module, klass_name)
except Exception as e:
emsg = "Failed to import class '{}' - {}".format(klassname, e)
log.msg(emsg)
log.msg("PYTHONPATH: {}".format(sys.path))
raise ApplicationError("crossbar.error.class_import_failed", emsg)
elif config['type'] == 'wamplet':
try:
dist = config['package']
name = config['entrypoint']
if self.debug:
log.msg("Starting WAMPlet '{}/{}'".format(dist, name))
# make is supposed to make instances of ApplicationSession
make = pkg_resources.load_entry_point(dist, 'autobahn.twisted.wamplet', name)
except Exception as e:
emsg = "Failed to import wamplet '{}/{}' - {}".format(dist, name, e)
log.msg(emsg)
raise ApplicationError("crossbar.error.class_import_failed", emsg)
else:
raise ApplicationError("crossbar.error.invalid_configuration", "invalid component type '{}'".format(config['type']))
# .. and create and add an WAMP application session to
# run the component next to the router
#
try:
session = make(cfg)
except Exception as e:
raise ApplicationError("crossbar.error.class_import_failed", str(e))
if not isinstance(session, ApplicationSession):
raise ApplicationError("crossbar.error.class_import_failed", "session not derived of ApplicationSession")
self.components[id] = RouterComponent(id, config, session)
self.session_factory.add(session, authrole=config.get('role', u'anonymous'))
def start_router_component(self, id, config, details=None):
"""
Start an app component in this router worker.
:param id: The ID of the component to start.
:type id: str
:param config: The component configuration.
:type config: obj
"""
self.log.debug("{}.start_router_component".format(self.__class__.__name__),
id=id, config=config)
# prohibit starting a component twice
#
if id in self.components:
emsg = "Could not start component: a component with ID '{}'' is already running (or starting)".format(id)
self.log.error(emsg)
raise ApplicationError(u'crossbar.error.already_running', emsg)
# check configuration
#
try:
checkconfig.check_router_component(config)
except Exception as e:
emsg = "Invalid router component configuration: {}".format(e)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
else:
self.log.debug("Starting {type}-component on router.",
type=config['type'])
# resolve references to other entities
#
references = {}
for ref in config.get('references', []):
ref_type, ref_id = ref.split(':')
if ref_type == u'connection':
if ref_id in self._connections:
references[ref] = self._connections[ref_id]
else:
emsg = "cannot resolve reference '{}' - no '{}' with ID '{}'".format(ref, ref_type, ref_id)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
else:
emsg = "cannot resolve reference '{}' - invalid reference type '{}'".format(ref, ref_type)
self.log.error(emsg)
raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
# create component config
#
realm = config['realm']
extra = config.get('extra', None)
component_config = ComponentConfig(realm=realm, extra=extra)
create_component = _appsession_loader(config)
# .. and create and add an WAMP application session to
# run the component next to the router
#
try:
session = create_component(component_config)
# any exception spilling out from user code in onXXX handlers is fatal!
def panic(fail, msg):
self.log.error(
"Fatal error in component: {msg} - {log_failure.value}",
msg=msg, log_failure=fail
)
session.disconnect()
session._swallow_error = panic
except Exception:
self.log.error(
"Component instantiation failed",
log_failure=Failure(),
)
raise
# Note that 'join' is fired to listeners *before* onJoin runs,
# so if you do 'yield self.leave()' in onJoin we'll still
# publish "started" before "stopped".
def publish_stopped(session, stop_details):
self.log.info(
"stopped component: {session} id={session_id}",
session=class_name(session),
session_id=session._session_id,
)
topic = self._uri_prefix + '.container.on_component_stop'
event = {u'id': id}
caller = details.caller if details else None
self.publish(topic, event, options=PublishOptions(exclude=caller))
return event
def publish_started(session, start_details):
self.log.info(
"started component: {session} id={session_id}",
session=class_name(session),
session_id=session._session_id,
)
topic = self._uri_prefix + '.container.on_component_start'
event = {u'id': id}
caller = details.caller if details else None
self.publish(topic, event, options=PublishOptions(exclude=caller))
return event
session.on('leave', publish_stopped)
session.on('join', publish_started)
self.components[id] = RouterComponent(id, config, session)
self._router_session_factory.add(session, authrole=config.get('role', u'anonymous'))
self.log.debug(
"Added component {id} (type '{name}')",
id=id,
name=class_name(session),
)
