94 lines
3.3 KiB
Python
94 lines
3.3 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import functools
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import inspect
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from oslo_utils import excutils
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import nova.conf
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from nova.notifications.objects import base
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from nova.notifications.objects import exception as exception_obj
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from nova.objects import fields
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from nova import rpc
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from nova import safe_utils
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CONF = nova.conf.CONF
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@rpc.if_notifications_enabled
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def _emit_versioned_exception_notification(context, exception, source):
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payload = exception_obj.ExceptionPayload.from_exception(exception)
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publisher = base.NotificationPublisher(host=CONF.host, source=source)
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event_type = base.EventType(
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object='compute',
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action=fields.NotificationAction.EXCEPTION,
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)
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notification = exception_obj.ExceptionNotification(
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publisher=publisher,
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event_type=event_type,
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priority=fields.NotificationPriority.ERROR,
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payload=payload,
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)
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notification.emit(context)
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def _emit_legacy_exception_notification(
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context, exception, service, function_name, args,
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):
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notifier = rpc.get_notifier(service)
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payload = {'exception': exception, 'args': args}
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notifier.error(context, function_name, payload)
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def wrap_exception(service, binary):
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"""This decorator wraps a method to catch any exceptions that may
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get thrown. It also optionally sends the exception to the notification
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system.
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"""
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def inner(f):
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def wrapped(self, context, *args, **kw):
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# Don't store self or context in the payload, it now seems to
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# contain confidential information.
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try:
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return f(self, context, *args, **kw)
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except Exception as exc:
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with excutils.save_and_reraise_exception():
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call_dict = _get_call_dict(f, self, context, *args, **kw)
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function_name = f.__name__
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_emit_legacy_exception_notification(
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context, exc, service, function_name, call_dict)
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_emit_versioned_exception_notification(
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context, exc, binary)
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return functools.wraps(f)(wrapped)
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return inner
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def _get_call_dict(function, self, context, *args, **kw):
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wrapped_func = safe_utils.get_wrapped_function(function)
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call_dict = inspect.getcallargs(wrapped_func, self,
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context, *args, **kw)
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# self can't be serialized and shouldn't be in the
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# payload
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call_dict.pop('self', None)
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# NOTE(gibi) remove context as well as it contains sensitive information
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# and it can also contain circular references
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call_dict.pop('context', None)
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return _cleanse_dict(call_dict)
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def _cleanse_dict(original):
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"""Strip all admin_password, new_pass, rescue_pass keys from a dict."""
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return {k: v for k, v in original.items() if "_pass" not in k}
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