e426a015ee
This patch set adds hostname field to Audit and Action Plan objects to track services which execute these objects. Change-Id: I786e419952925c380c969b12cc60f9a1004af96b Partially-Implements: blueprint support-watcher-ha-active-active-mode
658 lines
24 KiB
Python
658 lines
24 KiB
Python
# -*- encoding: utf-8 -*-
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# Copyright 2013 Red Hat, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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In the Watcher system, an :ref:`Audit <audit_definition>` is a request for
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optimizing a :ref:`Cluster <cluster_definition>`.
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The optimization is done in order to satisfy one :ref:`Goal <goal_definition>`
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on a given :ref:`Cluster <cluster_definition>`.
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For each :ref:`Audit <audit_definition>`, the Watcher system generates an
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:ref:`Action Plan <action_plan_definition>`.
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To see the life-cycle and description of an :ref:`Audit <audit_definition>`
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states, visit :ref:`the Audit State machine <audit_state_machine>`.
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"""
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import datetime
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import pecan
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from pecan import rest
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import wsme
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from wsme import types as wtypes
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import wsmeext.pecan as wsme_pecan
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from oslo_log import log
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from watcher._i18n import _
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from watcher.api.controllers import base
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from watcher.api.controllers import link
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from watcher.api.controllers.v1 import collection
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from watcher.api.controllers.v1 import types
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from watcher.api.controllers.v1 import utils as api_utils
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from watcher.common import exception
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from watcher.common import policy
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from watcher.common import utils
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from watcher.decision_engine import rpcapi
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from watcher import objects
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LOG = log.getLogger(__name__)
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class AuditPostType(wtypes.Base):
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name = wtypes.wsattr(wtypes.text, mandatory=False)
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audit_template_uuid = wtypes.wsattr(types.uuid, mandatory=False)
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goal = wtypes.wsattr(wtypes.text, mandatory=False)
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strategy = wtypes.wsattr(wtypes.text, mandatory=False)
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audit_type = wtypes.wsattr(wtypes.text, mandatory=True)
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state = wsme.wsattr(wtypes.text, readonly=True,
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default=objects.audit.State.PENDING)
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parameters = wtypes.wsattr({wtypes.text: types.jsontype}, mandatory=False,
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default={})
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interval = wsme.wsattr(types.interval_or_cron, mandatory=False)
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scope = wtypes.wsattr(types.jsontype, readonly=True)
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auto_trigger = wtypes.wsattr(bool, mandatory=False)
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hostname = wtypes.wsattr(wtypes.text, readonly=True, mandatory=False)
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def as_audit(self, context):
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audit_type_values = [val.value for val in objects.audit.AuditType]
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if self.audit_type not in audit_type_values:
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raise exception.AuditTypeNotFound(audit_type=self.audit_type)
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if (self.audit_type == objects.audit.AuditType.ONESHOT.value and
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self.interval not in (wtypes.Unset, None)):
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raise exception.AuditIntervalNotAllowed(audit_type=self.audit_type)
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if (self.audit_type == objects.audit.AuditType.CONTINUOUS.value and
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self.interval in (wtypes.Unset, None)):
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raise exception.AuditIntervalNotSpecified(
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audit_type=self.audit_type)
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# If audit_template_uuid was provided, we will provide any
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# variables not included in the request, but not override
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# those variables that were included.
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if self.audit_template_uuid:
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try:
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audit_template = objects.AuditTemplate.get(
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context, self.audit_template_uuid)
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except exception.AuditTemplateNotFound:
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raise exception.Invalid(
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message=_('The audit template UUID or name specified is '
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'invalid'))
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at2a = {
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'goal': 'goal_id',
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'strategy': 'strategy_id',
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'scope': 'scope',
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}
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to_string_fields = set(['goal', 'strategy'])
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for k in at2a:
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if not getattr(self, k):
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try:
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at_attr = getattr(audit_template, at2a[k])
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if at_attr and (k in to_string_fields):
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at_attr = str(at_attr)
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setattr(self, k, at_attr)
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except AttributeError:
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pass
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# Note: If audit name was not provided, used a default name
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if not self.name:
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if self.strategy:
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strategy = objects.Strategy.get(context, self.strategy)
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self.name = "%s-%s" % (strategy.name,
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datetime.datetime.utcnow().isoformat())
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elif self.audit_template_uuid:
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audit_template = objects.AuditTemplate.get(
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context, self.audit_template_uuid)
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self.name = "%s-%s" % (audit_template.name,
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datetime.datetime.utcnow().isoformat())
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else:
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goal = objects.Goal.get(context, self.goal)
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self.name = "%s-%s" % (goal.name,
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datetime.datetime.utcnow().isoformat())
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# No more than 63 characters
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if len(self.name) > 63:
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LOG.warning("Audit: %s length exceeds 63 characters",
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self.name)
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self.name = self.name[0:63]
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return Audit(
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name=self.name,
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audit_type=self.audit_type,
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parameters=self.parameters,
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goal_id=self.goal,
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strategy_id=self.strategy,
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interval=self.interval,
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scope=self.scope,
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auto_trigger=self.auto_trigger)
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class AuditPatchType(types.JsonPatchType):
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@staticmethod
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def mandatory_attrs():
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return ['/audit_template_uuid', '/type']
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@staticmethod
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def validate(patch):
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def is_new_state_none(p):
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return p.path == '/state' and p.op == 'replace' and p.value is None
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serialized_patch = {'path': patch.path,
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'op': patch.op,
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'value': patch.value}
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if (patch.path in AuditPatchType.mandatory_attrs() or
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is_new_state_none(patch)):
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msg = _("%(field)s can't be updated.")
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raise exception.PatchError(
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patch=serialized_patch,
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reason=msg % dict(field=patch.path))
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return types.JsonPatchType.validate(patch)
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class Audit(base.APIBase):
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"""API representation of an audit.
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This class enforces type checking and value constraints, and converts
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between the internal object model and the API representation of an audit.
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"""
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_goal_uuid = None
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_goal_name = None
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_strategy_uuid = None
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_strategy_name = None
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def _get_goal(self, value):
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if value == wtypes.Unset:
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return None
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goal = None
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try:
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if utils.is_uuid_like(value) or utils.is_int_like(value):
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goal = objects.Goal.get(
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pecan.request.context, value)
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else:
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goal = objects.Goal.get_by_name(
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pecan.request.context, value)
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except exception.GoalNotFound:
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pass
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if goal:
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self.goal_id = goal.id
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return goal
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def _get_goal_uuid(self):
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return self._goal_uuid
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def _set_goal_uuid(self, value):
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if value and self._goal_uuid != value:
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self._goal_uuid = None
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goal = self._get_goal(value)
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if goal:
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self._goal_uuid = goal.uuid
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def _get_goal_name(self):
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return self._goal_name
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def _set_goal_name(self, value):
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if value and self._goal_name != value:
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self._goal_name = None
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goal = self._get_goal(value)
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if goal:
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self._goal_name = goal.name
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def _get_strategy(self, value):
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if value == wtypes.Unset:
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return None
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strategy = None
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try:
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if utils.is_uuid_like(value) or utils.is_int_like(value):
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strategy = objects.Strategy.get(
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pecan.request.context, value)
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else:
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strategy = objects.Strategy.get_by_name(
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pecan.request.context, value)
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except exception.StrategyNotFound:
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pass
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if strategy:
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self.strategy_id = strategy.id
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return strategy
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def _get_strategy_uuid(self):
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return self._strategy_uuid
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def _set_strategy_uuid(self, value):
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if value and self._strategy_uuid != value:
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self._strategy_uuid = None
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strategy = self._get_strategy(value)
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if strategy:
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self._strategy_uuid = strategy.uuid
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def _get_strategy_name(self):
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return self._strategy_name
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def _set_strategy_name(self, value):
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if value and self._strategy_name != value:
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self._strategy_name = None
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strategy = self._get_strategy(value)
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if strategy:
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self._strategy_name = strategy.name
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uuid = types.uuid
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"""Unique UUID for this audit"""
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name = wtypes.text
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"""Name of this audit"""
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audit_type = wtypes.text
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"""Type of this audit"""
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state = wtypes.text
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"""This audit state"""
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goal_uuid = wsme.wsproperty(
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wtypes.text, _get_goal_uuid, _set_goal_uuid, mandatory=True)
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"""Goal UUID the audit refers to"""
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goal_name = wsme.wsproperty(
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wtypes.text, _get_goal_name, _set_goal_name, mandatory=False)
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"""The name of the goal this audit refers to"""
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strategy_uuid = wsme.wsproperty(
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wtypes.text, _get_strategy_uuid, _set_strategy_uuid, mandatory=False)
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"""Strategy UUID the audit refers to"""
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strategy_name = wsme.wsproperty(
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wtypes.text, _get_strategy_name, _set_strategy_name, mandatory=False)
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"""The name of the strategy this audit refers to"""
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parameters = {wtypes.text: types.jsontype}
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"""The strategy parameters for this audit"""
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links = wsme.wsattr([link.Link], readonly=True)
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"""A list containing a self link and associated audit links"""
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interval = wsme.wsattr(wtypes.text, mandatory=False)
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"""Launch audit periodically (in seconds)"""
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scope = wsme.wsattr(types.jsontype, mandatory=False)
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"""Audit Scope"""
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auto_trigger = wsme.wsattr(bool, mandatory=False, default=False)
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"""Autoexecute action plan once audit is succeeded"""
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next_run_time = wsme.wsattr(datetime.datetime, mandatory=False)
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"""The next time audit launch"""
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hostname = wsme.wsattr(wtypes.text, mandatory=False)
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"""Hostname the audit is running on"""
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def __init__(self, **kwargs):
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self.fields = []
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fields = list(objects.Audit.fields)
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for k in fields:
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# Skip fields we do not expose.
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if not hasattr(self, k):
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continue
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self.fields.append(k)
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setattr(self, k, kwargs.get(k, wtypes.Unset))
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self.fields.append('goal_id')
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self.fields.append('strategy_id')
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fields.append('goal_uuid')
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setattr(self, 'goal_uuid', kwargs.get('goal_id',
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wtypes.Unset))
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fields.append('goal_name')
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setattr(self, 'goal_name', kwargs.get('goal_id',
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wtypes.Unset))
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fields.append('strategy_uuid')
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setattr(self, 'strategy_uuid', kwargs.get('strategy_id',
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wtypes.Unset))
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fields.append('strategy_name')
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setattr(self, 'strategy_name', kwargs.get('strategy_id',
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wtypes.Unset))
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@staticmethod
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def _convert_with_links(audit, url, expand=True):
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if not expand:
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audit.unset_fields_except(['uuid', 'name', 'audit_type', 'state',
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'goal_uuid', 'interval', 'scope',
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'strategy_uuid', 'goal_name',
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'strategy_name', 'auto_trigger',
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'next_run_time'])
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audit.links = [link.Link.make_link('self', url,
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'audits', audit.uuid),
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link.Link.make_link('bookmark', url,
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'audits', audit.uuid,
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bookmark=True)
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]
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return audit
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@classmethod
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def convert_with_links(cls, rpc_audit, expand=True):
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audit = Audit(**rpc_audit.as_dict())
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return cls._convert_with_links(audit, pecan.request.host_url, expand)
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@classmethod
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def sample(cls, expand=True):
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sample = cls(uuid='27e3153e-d5bf-4b7e-b517-fb518e17f34c',
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name='My Audit',
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audit_type='ONESHOT',
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state='PENDING',
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created_at=datetime.datetime.utcnow(),
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deleted_at=None,
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updated_at=datetime.datetime.utcnow(),
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interval='7200',
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scope=[],
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auto_trigger=False,
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next_run_time=datetime.datetime.utcnow())
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sample.goal_id = '7ae81bb3-dec3-4289-8d6c-da80bd8001ae'
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sample.strategy_id = '7ae81bb3-dec3-4289-8d6c-da80bd8001ff'
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return cls._convert_with_links(sample, 'http://localhost:9322', expand)
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class AuditCollection(collection.Collection):
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"""API representation of a collection of audits."""
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audits = [Audit]
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"""A list containing audits objects"""
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def __init__(self, **kwargs):
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super(AuditCollection, self).__init__()
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self._type = 'audits'
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@staticmethod
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def convert_with_links(rpc_audits, limit, url=None, expand=False,
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**kwargs):
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collection = AuditCollection()
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collection.audits = [Audit.convert_with_links(p, expand)
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for p in rpc_audits]
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collection.next = collection.get_next(limit, url=url, **kwargs)
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return collection
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@classmethod
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def sample(cls):
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sample = cls()
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sample.audits = [Audit.sample(expand=False)]
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return sample
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class AuditsController(rest.RestController):
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"""REST controller for Audits."""
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def __init__(self):
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super(AuditsController, self).__init__()
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self.dc_client = rpcapi.DecisionEngineAPI()
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from_audits = False
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"""A flag to indicate if the requests to this controller are coming
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from the top-level resource Audits."""
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_custom_actions = {
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'detail': ['GET'],
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}
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def _get_audits_collection(self, marker, limit,
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sort_key, sort_dir, expand=False,
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resource_url=None, goal=None,
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strategy=None):
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additional_fields = ["goal_uuid", "goal_name", "strategy_uuid",
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"strategy_name"]
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api_utils.validate_sort_key(
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sort_key, list(objects.Audit.fields) + additional_fields)
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limit = api_utils.validate_limit(limit)
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api_utils.validate_sort_dir(sort_dir)
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marker_obj = None
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if marker:
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marker_obj = objects.Audit.get_by_uuid(pecan.request.context,
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marker)
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filters = {}
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if goal:
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if utils.is_uuid_like(goal):
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filters['goal_uuid'] = goal
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else:
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# TODO(michaelgugino): add method to get goal by name.
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filters['goal_name'] = goal
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if strategy:
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if utils.is_uuid_like(strategy):
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filters['strategy_uuid'] = strategy
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else:
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# TODO(michaelgugino): add method to get goal by name.
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filters['strategy_name'] = strategy
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need_api_sort = api_utils.check_need_api_sort(sort_key,
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additional_fields)
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sort_db_key = (sort_key if not need_api_sort
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else None)
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audits = objects.Audit.list(pecan.request.context,
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limit,
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marker_obj, sort_key=sort_db_key,
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sort_dir=sort_dir, filters=filters)
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audits_collection = AuditCollection.convert_with_links(
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audits, limit, url=resource_url, expand=expand,
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sort_key=sort_key, sort_dir=sort_dir)
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if need_api_sort:
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api_utils.make_api_sort(audits_collection.audits, sort_key,
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sort_dir)
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return audits_collection
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@wsme_pecan.wsexpose(AuditCollection, types.uuid, int, wtypes.text,
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wtypes.text, wtypes.text, wtypes.text, int)
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def get_all(self, marker=None, limit=None, sort_key='id', sort_dir='asc',
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goal=None, strategy=None):
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"""Retrieve a list of audits.
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:param marker: pagination marker for large data sets.
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:param limit: maximum number of resources to return in a single result.
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:param sort_key: column to sort results by. Default: id.
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:param sort_dir: direction to sort. "asc" or "desc". Default: asc.
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:param goal: goal UUID or name to filter by
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:param strategy: strategy UUID or name to filter by
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"""
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context = pecan.request.context
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policy.enforce(context, 'audit:get_all',
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action='audit:get_all')
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return self._get_audits_collection(marker, limit, sort_key,
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sort_dir, goal=goal,
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strategy=strategy)
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@wsme_pecan.wsexpose(AuditCollection, wtypes.text, types.uuid, int,
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wtypes.text, wtypes.text)
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def detail(self, goal=None, marker=None, limit=None,
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sort_key='id', sort_dir='asc'):
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"""Retrieve a list of audits with detail.
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:param goal: goal UUID or name to filter by
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:param marker: pagination marker for large data sets.
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:param limit: maximum number of resources to return in a single result.
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|
:param sort_key: column to sort results by. Default: id.
|
|
:param sort_dir: direction to sort. "asc" or "desc". Default: asc.
|
|
"""
|
|
context = pecan.request.context
|
|
policy.enforce(context, 'audit:detail',
|
|
action='audit:detail')
|
|
# NOTE(lucasagomes): /detail should only work agaist collections
|
|
parent = pecan.request.path.split('/')[:-1][-1]
|
|
if parent != "audits":
|
|
raise exception.HTTPNotFound
|
|
|
|
expand = True
|
|
resource_url = '/'.join(['audits', 'detail'])
|
|
return self._get_audits_collection(marker, limit,
|
|
sort_key, sort_dir, expand,
|
|
resource_url,
|
|
goal=goal)
|
|
|
|
@wsme_pecan.wsexpose(Audit, wtypes.text)
|
|
def get_one(self, audit):
|
|
"""Retrieve information about the given audit.
|
|
|
|
:param audit: UUID or name of an audit.
|
|
"""
|
|
if self.from_audits:
|
|
raise exception.OperationNotPermitted
|
|
|
|
context = pecan.request.context
|
|
rpc_audit = api_utils.get_resource('Audit', audit)
|
|
policy.enforce(context, 'audit:get', rpc_audit, action='audit:get')
|
|
|
|
return Audit.convert_with_links(rpc_audit)
|
|
|
|
@wsme_pecan.wsexpose(Audit, body=AuditPostType, status_code=201)
|
|
def post(self, audit_p):
|
|
"""Create a new audit.
|
|
|
|
:param audit_p: an audit within the request body.
|
|
"""
|
|
context = pecan.request.context
|
|
policy.enforce(context, 'audit:create',
|
|
action='audit:create')
|
|
audit = audit_p.as_audit(context)
|
|
|
|
if self.from_audits:
|
|
raise exception.OperationNotPermitted
|
|
|
|
if not audit._goal_uuid:
|
|
raise exception.Invalid(
|
|
message=_('A valid goal_id or audit_template_id '
|
|
'must be provided'))
|
|
|
|
strategy_uuid = audit.strategy_uuid
|
|
no_schema = True
|
|
if strategy_uuid is not None:
|
|
# validate parameter when predefined strategy in audit template
|
|
strategy = objects.Strategy.get(pecan.request.context,
|
|
strategy_uuid)
|
|
schema = strategy.parameters_spec
|
|
if schema:
|
|
# validate input parameter with default value feedback
|
|
no_schema = False
|
|
utils.StrictDefaultValidatingDraft4Validator(schema).validate(
|
|
audit.parameters)
|
|
|
|
if no_schema and audit.parameters:
|
|
raise exception.Invalid(_('Specify parameters but no predefined '
|
|
'strategy for audit, or no '
|
|
'parameter spec in predefined strategy'))
|
|
|
|
audit_dict = audit.as_dict()
|
|
|
|
new_audit = objects.Audit(context, **audit_dict)
|
|
new_audit.create()
|
|
|
|
# Set the HTTP Location Header
|
|
pecan.response.location = link.build_url('audits', new_audit.uuid)
|
|
|
|
# trigger decision-engine to run the audit
|
|
if new_audit.audit_type == objects.audit.AuditType.ONESHOT.value:
|
|
self.dc_client.trigger_audit(context, new_audit.uuid)
|
|
|
|
return Audit.convert_with_links(new_audit)
|
|
|
|
@wsme.validate(types.uuid, [AuditPatchType])
|
|
@wsme_pecan.wsexpose(Audit, wtypes.text, body=[AuditPatchType])
|
|
def patch(self, audit, patch):
|
|
"""Update an existing audit.
|
|
|
|
:param audit: UUID or name of an audit.
|
|
:param patch: a json PATCH document to apply to this audit.
|
|
"""
|
|
if self.from_audits:
|
|
raise exception.OperationNotPermitted
|
|
|
|
context = pecan.request.context
|
|
audit_to_update = api_utils.get_resource(
|
|
'Audit', audit, eager=True)
|
|
policy.enforce(context, 'audit:update', audit_to_update,
|
|
action='audit:update')
|
|
|
|
try:
|
|
audit_dict = audit_to_update.as_dict()
|
|
|
|
initial_state = audit_dict['state']
|
|
new_state = api_utils.get_patch_value(patch, 'state')
|
|
if not api_utils.check_audit_state_transition(
|
|
patch, initial_state):
|
|
error_message = _("State transition not allowed: "
|
|
"(%(initial_state)s -> %(new_state)s)")
|
|
raise exception.PatchError(
|
|
patch=patch,
|
|
reason=error_message % dict(
|
|
initial_state=initial_state, new_state=new_state))
|
|
|
|
audit = Audit(**api_utils.apply_jsonpatch(audit_dict, patch))
|
|
except api_utils.JSONPATCH_EXCEPTIONS as e:
|
|
raise exception.PatchError(patch=patch, reason=e)
|
|
|
|
# Update only the fields that have changed
|
|
for field in objects.Audit.fields:
|
|
try:
|
|
patch_val = getattr(audit, field)
|
|
except AttributeError:
|
|
# Ignore fields that aren't exposed in the API
|
|
continue
|
|
if patch_val == wtypes.Unset:
|
|
patch_val = None
|
|
if audit_to_update[field] != patch_val:
|
|
audit_to_update[field] = patch_val
|
|
|
|
audit_to_update.save()
|
|
return Audit.convert_with_links(audit_to_update)
|
|
|
|
@wsme_pecan.wsexpose(None, wtypes.text, status_code=204)
|
|
def delete(self, audit):
|
|
"""Delete an audit.
|
|
|
|
:param audit: UUID or name of an audit.
|
|
"""
|
|
context = pecan.request.context
|
|
audit_to_delete = api_utils.get_resource(
|
|
'Audit', audit, eager=True)
|
|
policy.enforce(context, 'audit:delete', audit_to_delete,
|
|
action='audit:delete')
|
|
|
|
initial_state = audit_to_delete.state
|
|
new_state = objects.audit.State.DELETED
|
|
if not objects.audit.AuditStateTransitionManager(
|
|
).check_transition(initial_state, new_state):
|
|
raise exception.DeleteError(
|
|
state=initial_state)
|
|
|
|
audit_to_delete.soft_delete()
|