def revert(self, context, resource, result, **kwargs):
if isinstance(result, ft.Failure):
LOG.error(_LE("Error when deleting resource: %s"), resource.id)
return
resource.deleted_at = None
resource.store(context)
def revert(self, context, resource, result, **kwargs):
if isinstance(result, ft.Failure):
LOG.error(_LE("Error when creating resource: %s"),
resource.to_dict())
return
resource.delete(context, soft_delete=False)
def ActionProc(context, action_id):
'''Action process.'''
action = Action.load(context, action_id=action_id)
if action is None:
LOG.error(_LE('Action "%s" could not be found.'), action_id)
return False
reason = 'Action completed'
success = True
try:
result, reason = action.execute()
except Exception as ex:
result = action.RES_ERROR
reason = six.text_type(ex)
LOG.exception(_('Unexpected exception occurred during action '
'%(action)s (%(id)s) execution: %(reason)s'),
{'action': action.action, 'id': action.id,
'reason': reason})
success = False
finally:
# NOTE: locks on action is eventually released here by status update
action.set_status(result, reason)
return success
def service_manage_report(self):
admin_context = bilean_context.get_admin_context()
try:
db_api.service_update(admin_context, self.engine_id)
except Exception as ex:
LOG.error(_LE('Service %(id)s update failed: %(error)s'),
{'id': self.engine_id, 'error': six.text_type(ex)})
def rule_create(self, cnxt, name, spec, metadata=None):
if len(rule_base.Rule.load_all(cnxt, filters={'name': name})) > 0:
msg = _("The rule (%(name)s) already exists."
) % {"name": name}
raise exception.BileanBadRequest(msg=msg)
type_name, version = schema.get_spec_version(spec)
try:
plugin = environment.global_env().get_rule(type_name)
except exception.RuleTypeNotFound:
msg = _("The specified rule type (%(type)s) is not supported."
) % {"type": type_name}
raise exception.BileanBadRequest(msg=msg)
LOG.info(_LI("Creating rule type: %(type)s, name: %(name)s."),
{'type': type_name, 'name': name})
rule = plugin(name, spec, metadata=metadata)
try:
rule.validate()
except exception.InvalidSpec as ex:
msg = six.text_type(ex)
LOG.error(_LE("Failed in creating rule: %s"), msg)
raise exception.BileanBadRequest(msg=msg)
rule.store(cnxt)
LOG.info(_LI("Rule %(name)s is created: %(id)s."),
{'name': name, 'id': rule.id})
return rule.to_dict()
def _create_auth_plugin(self):
if self.auth_token_info:
auth_ref = access.AccessInfo.factory(body=self.auth_token_info,
auth_token=self.auth_token)
return access_plugin.AccessInfoPlugin(
auth_url=self.keystone_v3_endpoint, auth_ref=auth_ref)
if self.auth_token:
# FIXME(jamielennox): This is broken but consistent. If you
# only have a token but don't load a service catalog then
# url_for wont work. Stub with the keystone endpoint so at
# least it might be right.
return token_endpoint.Token(endpoint=self.keystone_v3_endpoint,
token=self.auth_token)
if self.password:
return v3.Password(username=self.username,
password=self.password,
project_id=self.tenant_id,
user_domain_id='default',
auth_url=self.keystone_v3_endpoint)
LOG.error(
_LE("Keystone v3 API connection failed, no password "
"trust or auth_token!"))
raise exception.AuthorizationFailure()
def rule_create(self, cnxt, name, spec, metadata=None):
if len(plugin_base.Rule.load_all(cnxt, filters={'name': name})) > 0:
msg = _("The rule (%(name)s) already exists."
) % {"name": name}
raise exception.BileanBadRequest(msg=msg)
type_name, version = schema.get_spec_version(spec)
try:
plugin = environment.global_env().get_plugin(type_name)
except exception.RuleTypeNotFound:
msg = _("The specified rule type (%(type)s) is not supported."
) % {"type": type_name}
raise exception.BileanBadRequest(msg=msg)
LOG.info(_LI("Creating rule type: %(type)s, name: %(name)s."),
{'type': type_name, 'name': name})
rule = plugin.RuleClass(name, spec, metadata=metadata)
try:
rule.validate()
except exception.InvalidSpec as ex:
msg = six.text_type(ex)
LOG.error(_LE("Failed in creating rule: %s"), msg)
raise exception.BileanBadRequest(msg=msg)
rule.store(cnxt)
LOG.info(_LI("Rule %(name)s is created: %(id)s."),
{'name': name, 'id': rule.id})
return rule.to_dict()
def _create_auth_plugin(self):
if self.auth_token_info:
auth_ref = access.AccessInfo.factory(body=self.auth_token_info,
auth_token=self.auth_token)
return access_plugin.AccessInfoPlugin(
auth_url=self.keystone_v3_endpoint,
auth_ref=auth_ref)
if self.auth_token:
# FIXME(jamielennox): This is broken but consistent. If you
# only have a token but don't load a service catalog then
# url_for wont work. Stub with the keystone endpoint so at
# least it might be right.
return token_endpoint.Token(endpoint=self.keystone_v3_endpoint,
token=self.auth_token)
if self.password:
return v3.Password(username=self.username,
password=self.password,
project_id=self.tenant_id,
user_domain_id='default',
auth_url=self.keystone_v3_endpoint)
LOG.error(_LE("Keystone v3 API connection failed, no password "
"trust or auth_token!"))
raise exception.AuthorizationFailure()
def revert(self, context, resource, resource_bak, result, **kwargs):
if isinstance(result, ft.Failure):
LOG.error(_LE("Error when updating resource: %s"), resource.id)
return
# restore resource
res = plugin_base.Resource.from_dict(resource_bak)
res.store(context)
def kill_children(self, *args):
"""Kills the entire process group."""
LOG.error(_LE('SIGTERM received'))
signal.signal(signal.SIGTERM, signal.SIG_IGN)
signal.signal(signal.SIGINT, signal.SIG_IGN)
self.running = False
os.killpg(0, signal.SIGTERM)
def kill_children(self, *args):
"""Kills the entire process group."""
LOG.error(_LE('SIGTERM received'))
signal.signal(signal.SIGTERM, signal.SIG_IGN)
signal.signal(signal.SIGINT, signal.SIG_IGN)
self.running = False
os.killpg(0, signal.SIGTERM)
def execute(self):
"""Wrapper of action execution."""
action_name = self.action.lower()
method_name = "do_" + action_name
method = getattr(self, method_name, None)
if method is None:
LOG.error(_LE('Unsupported action: %s.') % self.action)
return None
return method()
def revert(self, context, user_obj, user_bak, resource, result,
*args, **kwargs):
if isinstance(result, ft.Failure):
LOG.error(_LE("Error when updating user: %s"), user_obj.id)
return
# Restore user
user = user_mod.User.from_dict(user_bak)
user.store(context)
def execute(self):
"""Wrapper of action execution."""
action_name = self.action.lower()
method_name = "do_" + action_name
method = getattr(self, method_name, None)
if method is None:
LOG.error(_LE('Unsupported action: %s.') % self.action)
return None
return method()
def revert(self, context, resource, result, *args, **kwargs):
if isinstance(result, ft.Failure):
LOG.error(_LE("Error when storing consumption of resource: %s"),
resource.id)
return
consumption = resource.consumption
if consumption is not None:
consumption.delete(context)
def revert(self, context, user_bak, result, **kwargs):
if isinstance(result, ft.Failure):
LOG.error(_LE("Error when settling account for user: %s"),
user_bak.get('id'))
return
# Restore user
user = user_mod.User.from_dict(user_bak)
user.store(context)
def topics_and_exchanges(self):
topics_exchanges = set()
plugins = environment.global_env().get_plugins()
for plugin in plugins:
try:
topic_exchanges = plugin.get_notification_topics_exchanges()
for plugin_topic in topic_exchanges:
if isinstance(plugin_topic, basestring):
raise Exception(
_LE("Plugin %s should return a list of topic "
"exchange pairs") % plugin.__class__.__name__)
topics_exchanges.add(plugin_topic)
except Exception as e:
LOG.error(_LE("Failed to retrieve notification topic(s) "
"and exchanges from bilean plugin "
"%(ext)s: %(e)s") %
{'ext': plugin.__name__, 'e': e})
return topics_exchanges
def user_delete(self, cnxt, user_id):
"""Delete a specify user according to the notification."""
LOG.info(_LI('Deleging user: %s'), user_id)
user = user_mod.User.load(cnxt, user_id=user_id)
if user.status in [user.ACTIVE, user.WARNING]:
LOG.error(_LE("User (%s) is in use, can not delete."), user_id)
return
user_mod.User.delete(cnxt, user_id=user_id)
bilean_scheduler.notify(bilean_scheduler.DELETE_JOBS,
user=user.to_dict())
def _stop_rpc_server(self):
# Stop RPC connection to prevent new requests
LOG.info(_LI("Stopping engine service..."))
try:
self._rpc_server.stop()
self._rpc_server.wait()
LOG.info(_LI('Engine service stopped successfully'))
except Exception as ex:
LOG.error(_LE('Failed to stop engine service: %s'),
six.text_type(ex))
def _stop_rpc_server(self):
# Stop RPC connection to prevent new requests
LOG.info(_LI("Stopping engine service..."))
try:
self._rpc_server.stop()
self._rpc_server.wait()
LOG.info(_LI('Engine service stopped successfully'))
except Exception as ex:
LOG.error(_LE('Failed to stop engine service: %s'),
six.text_type(ex))
def do_settle_account(self):
try:
flow_engine = bilean_flow.get_settle_account_flow(
self.context, self.target, task=self.inputs.get('task'))
with bilean_flow.DynamicLogListener(flow_engine, logger=LOG):
flow_engine.run()
except Exception as ex:
LOG.error(_LE("Faied to execute action(%(action_id)s), error: "
"%(error_msg)s"), {"action_id": self.id,
"error_msg": six.text_type(ex)})
return self.RES_ERROR, _('Settle account failed.')
return self.RES_OK, _('Settle account successfully.')
def _verify_and_respawn_children(self, pid, status):
if len(self.stale_children) == 0:
LOG.debug('No stale children')
if os.WIFEXITED(status) and os.WEXITSTATUS(status) != 0:
LOG.error(_LE('Not respawning child %d, cannot '
'recover from termination'), pid)
if not self.children and not self.stale_children:
LOG.info(_LI('All workers have terminated. Exiting'))
self.running = False
else:
if len(self.children) < self.conf.workers:
self.run_child()
def error(context, entity, action, status=None, status_reason=None,
timestamp=None):
timestamp = timestamp or timeutils.utcnow()
event = Event(timestamp, logging.ERROR, entity,
action=action, status=status, status_reason=status_reason,
user_id=context.project)
event.store(context)
LOG.error(_LE('%(name)s [%(id)s] %(action)s - %(status)s: %(reason)s'),
{'name': event.obj_name,
'id': event.obj_id and event.obj_id[:8],
'action': action,
'status': status,
'reason': status_reason})
def user_lock_acquire(context, user_id, action_id, engine=None,
forced=False):
"""Try to lock the specified user.
:param context: the context used for DB operations;
:param user_id: ID of the user to be locked.
:param action_id: ID of the action that attempts to lock the user.
:param engine: ID of the engine that attempts to lock the user.
:param forced: set to True to cancel current action that owns the lock,
if any.
:returns: True if lock is acquired, or False otherwise.
"""
owner = db_api.user_lock_acquire(user_id, action_id)
if action_id == owner:
return True
retries = cfg.CONF.lock_retry_times
retry_interval = cfg.CONF.lock_retry_interval
while retries > 0:
sleep(retry_interval)
LOG.debug(_('Acquire lock for user %s again'), user_id)
owner = db_api.user_lock_acquire(user_id, action_id)
if action_id == owner:
return True
retries = retries - 1
if forced:
owner = db_api.user_lock_steal(user_id, action_id)
return action_id == owner
action = db_api.action_get(context, owner)
if (action and action.owner and action.owner != engine and
is_engine_dead(context, action.owner)):
LOG.info(_LI('The user %(u)s is locked by dead action %(a)s, '
'try to steal the lock.'), {
'u': user_id,
'a': owner
})
reason = _('Engine died when executing this action.')
db_api.action_mark_failed(context, action.id, time.time(),
reason=reason)
db_api.user_lock_steal(user_id, action_id)
return True
LOG.error(_LE('User is already locked by action %(old)s, '
'action %(new)s failed grabbing the lock'),
{'old': owner, 'new': action_id})
return False
def _verify_and_respawn_children(self, pid, status):
if len(self.stale_children) == 0:
LOG.debug('No stale children')
if os.WIFEXITED(status) and os.WEXITSTATUS(status) != 0:
LOG.error(
_LE('Not respawning child %d, cannot '
'recover from termination'), pid)
if not self.children and not self.stale_children:
LOG.info(_LI('All workers have terminated. Exiting'))
self.running = False
else:
if len(self.children) < self.conf.workers:
self.run_child()
def do_delete_resource(self):
try:
resource_id = self.inputs.get('resource_id')
resource = plugin_base.Resource.load(
self.context, resource_id=resource_id)
except exception.ResourceNotFound:
LOG.error(_LE('The resource(%s) trying to delete not found.'),
resource_id)
return self.RES_ERROR, _('Resource not found.')
try:
flow_engine = bilean_flow.get_delete_resource_flow(
self.context, self.target, resource)
with bilean_flow.DynamicLogListener(flow_engine, logger=LOG):
flow_engine.run()
except Exception as ex:
LOG.error(_LE("Faied to execute action(%(action_id)s), error: "
"%(error_msg)s"), {"action_id": self.id,
"error_msg": six.text_type(ex)})
return self.RES_ERROR, _('Resource deletion failed.')
LOG.info(_LI('Successfully deleted resource: %s'), resource.id)
return self.RES_OK, _('Resource deletion successfully.')
def do_create_resource(self):
resource = plugin_base.Resource.from_dict(self.inputs)
try:
flow_engine = bilean_flow.get_create_resource_flow(
self.context, self.target, resource)
with bilean_flow.DynamicLogListener(flow_engine, logger=LOG):
flow_engine.run()
except Exception as ex:
LOG.error(_LE("Faied to execute action(%(action_id)s), error: "
"%(error_msg)s"), {"action_id": self.id,
"error_msg": six.text_type(ex)})
return self.RES_ERROR, _('Resource creation failed.')
return self.RES_OK, _('Resource creation successfully.')
def process_identity_notification(self, notification):
"""Convert notification to user."""
user_id = notification['payload'].get('resource_info')
if not user_id:
LOG.error(_LE("Cannot retrieve user_id from notification: %s"),
notification)
return oslo_messaging.NotificationResult.HANDLED
action = self._get_action(notification['event_type'])
if action:
act = notify_action.UserAction(self.cnxt, action, user_id)
LOG.info(_LI("Notify engine to %(action)s user: %(user)s") %
{'action': action, 'user': user_id})
act.execute()
return oslo_messaging.NotificationResult.HANDLED
def __init__(self, **kwargs):
self.kwargs = kwargs
try:
self.message = self.msg_fmt % kwargs
except KeyError:
# exc_info = sys.exc_info()
# if kwargs doesn't match a variable in the message
# log the issue and the kwargs
LOG.exception(_LE('Exception in string format operation'))
for name, value in six.iteritems(kwargs):
LOG.error("%s: %s" % (name, value)) # noqa
if _FATAL_EXCEPTION_FORMAT_ERRORS:
raise
def __init__(self, **kwargs):
self.kwargs = kwargs
try:
self.message = self.msg_fmt % kwargs
except KeyError:
# exc_info = sys.exc_info()
# if kwargs doesn't match a variable in the message
# log the issue and the kwargs
LOG.exception(_LE('Exception in string format operation'))
for name, value in six.iteritems(kwargs):
LOG.error("%s: %s" % (name, value)) # noqa
if _FATAL_EXCEPTION_FORMAT_ERRORS:
raise
def read_global_environment(self):
'''Read and parse global environment files.'''
cfg.CONF.import_opt('environment_dir', 'bilean.common.config')
env_dir = cfg.CONF.environment_dir
try:
files = glob.glob(os.path.join(env_dir, '*'))
except OSError as ex:
LOG.error(_LE('Failed to read %s'), env_dir)
LOG.exception(ex)
return
for fname in files:
try:
with open(fname) as f:
LOG.info(_LI('Loading environment from %s'), fname)
self.load(self.parse(f.read()))
except ValueError as vex:
LOG.error(_LE('Failed to parse %s'), fname)
LOG.exception(six.text_type(vex))
except IOError as ioex:
LOG.error(_LE('Failed to read %s'), fname)
LOG.exception(six.text_type(ioex))
def read_global_environment(self):
'''Read and parse global environment files.'''
cfg.CONF.import_opt('environment_dir', 'bilean.common.config')
env_dir = cfg.CONF.environment_dir
try:
files = glob.glob(os.path.join(env_dir, '*'))
except OSError as ex:
LOG.error(_LE('Failed to read %s'), env_dir)
LOG.exception(ex)
return
for fname in files:
try:
with open(fname) as f:
LOG.info(_LI('Loading environment from %s'), fname)
self.load(self.parse(f.read()))
except ValueError as vex:
LOG.error(_LE('Failed to parse %s'), fname)
LOG.exception(six.text_type(vex))
except IOError as ioex:
LOG.error(_LE('Failed to read %s'), fname)
LOG.exception(six.text_type(ioex))
def do_delete(self, context, timestamp=None, ignore_missing=True,
timeout=None):
'''Delete resource from other services.'''
# Delete resource from db and generate consumption
self.delete(context, timestamp=timestamp)
self.consumption.store(context)
# Delete resource from cinder
cinderclient = driver_base.BileanDriver().block_store()
try:
cinderclient.volume_delete(self.id, ignore_missing=ignore_missing)
except Exception as ex:
LOG.error(_LE('Error: %s'), six.text_type(ex))
return False
return True
def execute(self, context, resource, **kwargs):
user = user_mod.User.load(context, user_id=resource.user_id)
pid = user.policy_id
try:
if pid:
policy = policy_mod.Policy.load(context, policy_id=pid)
else:
policy = policy_mod.Policy.load_default(context)
except exception.PolicyNotFound as e:
LOG.error(_LE("Error when find policy: %s"), e)
if policy is not None:
rule = policy.find_rule(context, resource.resource_type)
# Update resource with rule_id and rate
resource.rule_id = rule.id
resource.rate = utils.make_decimal(rule.get_price(resource))
resource.store(context)
def do_delete(self, context, timestamp=None, ignore_missing=True,
timeout=None):
'''Delete resource from other services.'''
# Delete resource from db and generate consumption
self.delete(context, timestamp=timestamp)
self.consumption.store(context)
# Delete resource from nova
novaclient = driver_base.BileanDriver().compute()
try:
novaclient.server_delete(self.id, ignore_missing=ignore_missing)
novaclient.wait_for_server_delete(self.id, timeout=timeout)
except Exception as ex:
LOG.error(_LE('Error: %s'), six.text_type(ex))
return False
return True
def process_identity_notification(self, notification):
"""Convert notifcation to user."""
user_id = notification['payload'].get('resource_info', None)
if not user_id:
LOG.error(_LE("Cannot retrieve user_id from notification: %s"),
notification)
return oslo_messaging.NotificationResult.HANDLED
action = self._get_action(notification['event_type'])
if action:
act = notify_action.UserAction(self.cnxt, action, user_id)
LOG.info(
_("Notify engine to %(action)s user: %(user)s") % {
'action': action,
'user': user_id
})
act.execute()
return oslo_messaging.NotificationResult.HANDLED
def execute(self, **kwargs):
"""Interface function for action execution.
:param dict kwargs: Parameters provided to the action, if any.
:returns: A tuple containing the result and the related reason.
"""
try:
res = bilean_lock.user_lock_acquire(self.context, self.target,
self.id, self.owner)
if not res:
LOG.error(_LE('Failed grabbing the lock for user: %s'),
self.target)
res = self.RES_ERROR
reason = _('Failed in locking user')
else:
res, reason = self._execute()
finally:
bilean_lock.user_lock_release(self.target, self.id)
return res, reason
def log_exception(err, exc_info):
args = {'exc_info': exc_info} if cfg.CONF.verbose or cfg.CONF.debug else {}
LOG.error(_LE("Unexpected error occurred serving API: %s"), err, **args)
def hup(self, *args):
"""Reloads configuration files with zero down time."""
LOG.error(_LE('SIGHUP received'))
signal.signal(signal.SIGHUP, signal.SIG_IGN)
raise exception.SIGHUPInterrupt
def log_exception(err, exc_info):
args = {'exc_info': exc_info} if cfg.CONF.verbose or cfg.CONF.debug else {}
LOG.error(_LE("Unexpected error occurred serving API: %s"), err, **args)
def __call__(self, request):
"""WSGI method that controls (de)serialization and method dispatch."""
action_args = self.get_action_args(request.environ)
action = action_args.pop('action', None)
status_code = action_args.pop('success', None)
try:
deserialized_request = self.dispatch(self.deserializer,
action, request)
action_args.update(deserialized_request)
LOG.debug(('Calling %(controller)s : %(action)s'),
{'controller': self.controller, 'action': action})
action_result = self.dispatch(self.controller, action,
request, **action_args)
except TypeError as err:
LOG.error(_LE('Exception handling resource: %s') % err)
msg = _('The server could not comply with the request since '
'it is either malformed or otherwise incorrect.')
err = webob.exc.HTTPBadRequest(msg)
http_exc = translate_exception(err, request.best_match_language())
# NOTE(luisg): We disguise HTTP exceptions, otherwise they will be
# treated by wsgi as responses ready to be sent back and they
# won't make it into the pipeline app that serializes errors
raise exception.HTTPExceptionDisguise(http_exc)
except webob.exc.HTTPException as err:
if not isinstance(err, webob.exc.HTTPError):
# Some HTTPException are actually not errors, they are
# responses ready to be sent back to the users, so we don't
# create error log, but disguise and translate them to meet
# openstacksdk's need.
http_exc = translate_exception(err,
request.best_match_language())
raise exception.HTTPExceptionDisguise(http_exc)
if isinstance(err, webob.exc.HTTPServerError):
LOG.error(
_LE("Returning %(code)s to user: %(explanation)s"),
{'code': err.code, 'explanation': err.explanation})
http_exc = translate_exception(err, request.best_match_language())
raise exception.HTTPExceptionDisguise(http_exc)
except exception.BileanException as err:
raise translate_exception(err, request.best_match_language())
except Exception as err:
log_exception(err, sys.exc_info())
raise translate_exception(err, request.best_match_language())
serializer = self.serializer or serializers.JSONResponseSerializer()
try:
response = webob.Response(request=request)
# Customize status code if default (200) should be overridden
if status_code is not None:
response.status_code = int(status_code)
# Customize 'location' header if provided
if action_result and isinstance(action_result, dict):
location = action_result.pop('location', None)
if location:
response.location = '/v1%s' % location
if not action_result:
action_result = None
self.dispatch(serializer, action, response, action_result)
return response
# return unserializable result (typically an exception)
except Exception:
return action_result
def __call__(self, request):
"""WSGI method that controls (de)serialization and method dispatch."""
action_args = self.get_action_args(request.environ)
action = action_args.pop('action', None)
status_code = action_args.pop('success', None)
try:
deserialized_request = self.dispatch(self.deserializer, action,
request)
action_args.update(deserialized_request)
LOG.debug(('Calling %(controller)s : %(action)s'), {
'controller': self.controller,
'action': action
})
action_result = self.dispatch(self.controller, action, request,
**action_args)
except TypeError as err:
LOG.error(_LE('Exception handling resource: %s') % err)
msg = _('The server could not comply with the request since '
'it is either malformed or otherwise incorrect.')
err = webob.exc.HTTPBadRequest(msg)
http_exc = translate_exception(err, request.best_match_language())
# NOTE(luisg): We disguise HTTP exceptions, otherwise they will be
# treated by wsgi as responses ready to be sent back and they
# won't make it into the pipeline app that serializes errors
raise exception.HTTPExceptionDisguise(http_exc)
except webob.exc.HTTPException as err:
if not isinstance(err, webob.exc.HTTPError):
# Some HTTPException are actually not errors, they are
# responses ready to be sent back to the users, so we don't
# create error log, but disguise and translate them to meet
# openstacksdk's need.
http_exc = translate_exception(err,
request.best_match_language())
raise exception.HTTPExceptionDisguise(http_exc)
if isinstance(err, webob.exc.HTTPServerError):
LOG.error(_LE("Returning %(code)s to user: %(explanation)s"), {
'code': err.code,
'explanation': err.explanation
})
http_exc = translate_exception(err, request.best_match_language())
raise exception.HTTPExceptionDisguise(http_exc)
except exception.BileanException as err:
raise translate_exception(err, request.best_match_language())
except Exception as err:
log_exception(err, sys.exc_info())
raise translate_exception(err, request.best_match_language())
serializer = self.serializer or serializers.JSONResponseSerializer()
try:
response = webob.Response(request=request)
# Customize status code if default (200) should be overridden
if status_code is not None:
response.status_code = int(status_code)
# Customize 'location' header if provided
if action_result and isinstance(action_result, dict):
location = action_result.pop('location', None)
if location:
response.location = '/v1%s' % location
if not action_result:
action_result = None
self.dispatch(serializer, action, response, action_result)
return response
# return unserializable result (typically an exception)
except Exception:
return action_result