499 lines
22 KiB
Python
499 lines
22 KiB
Python
#
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# Copyright 2012, Red Hat, Inc.
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#
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# 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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"""
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Client side of the heat engine RPC API.
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"""
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from heat.common import messaging
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from heat.rpc import api
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class EngineClient(object):
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'''Client side of the heat engine rpc API.
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API version history::
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1.0 - Initial version.
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1.1 - Add support_status argument to list_resource_types()
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'''
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BASE_RPC_API_VERSION = '1.0'
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def __init__(self):
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self._client = messaging.get_rpc_client(
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topic=api.ENGINE_TOPIC,
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version=self.BASE_RPC_API_VERSION)
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@staticmethod
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def make_msg(method, **kwargs):
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return method, kwargs
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def call(self, ctxt, msg, version=None):
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method, kwargs = msg
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if version is not None:
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client = self._client.prepare(version=version)
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else:
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client = self._client
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return client.call(ctxt, method, **kwargs)
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def cast(self, ctxt, msg, version=None):
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method, kwargs = msg
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if version is not None:
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client = self._client.prepare(version=version)
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else:
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client = self._client
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return client.cast(ctxt, method, **kwargs)
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def identify_stack(self, ctxt, stack_name):
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"""
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The identify_stack method returns the full stack identifier for a
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single, live stack given the stack name.
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:param ctxt: RPC context.
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:param stack_name: Name of the stack you want to see,
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or None to see all
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"""
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return self.call(ctxt, self.make_msg('identify_stack',
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stack_name=stack_name))
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def list_stacks(self, ctxt, limit=None, marker=None, sort_keys=None,
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sort_dir=None, filters=None, tenant_safe=True,
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show_deleted=False):
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"""
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The list_stacks method returns attributes of all stacks. It supports
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pagination (``limit`` and ``marker``), sorting (``sort_keys`` and
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``sort_dir``) and filtering (``filters``) of the results.
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:param ctxt: RPC context.
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:param limit: the number of stacks to list (integer or string)
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:param marker: the ID of the last item in the previous page
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:param sort_keys: an array of fields used to sort the list
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:param sort_dir: the direction of the sort ('asc' or 'desc')
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:param filters: a dict with attribute:value to filter the list
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:param tenant_safe: if true, scope the request by the current tenant
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:param show_deleted: if true, show soft-deleted stacks
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:returns: a list of stacks
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"""
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return self.call(ctxt,
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self.make_msg('list_stacks', limit=limit,
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sort_keys=sort_keys, marker=marker,
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sort_dir=sort_dir, filters=filters,
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tenant_safe=tenant_safe,
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show_deleted=show_deleted))
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def count_stacks(self, ctxt, filters=None, tenant_safe=True,
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show_deleted=False):
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"""
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Return the number of stacks that match the given filters
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:param ctxt: RPC context.
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:param filters: a dict of ATTR:VALUE to match against stacks
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:param tenant_safe: if true, scope the request by the current tenant
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:param show_deleted: if true, count will include the deleted stacks
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:returns: a integer representing the number of matched stacks
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"""
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return self.call(ctxt, self.make_msg('count_stacks',
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filters=filters,
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tenant_safe=tenant_safe,
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show_deleted=show_deleted))
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def show_stack(self, ctxt, stack_identity):
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"""
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Return detailed information about one or all stacks.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack you want to show, or None to
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show all
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"""
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return self.call(ctxt, self.make_msg('show_stack',
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stack_identity=stack_identity))
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def preview_stack(self, ctxt, stack_name, template, params, files, args):
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"""
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Simulates a new stack using the provided template.
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Note that at this stage the template has already been fetched from the
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heat-api process if using a template-url.
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:param ctxt: RPC context.
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:param stack_name: Name of the stack you want to create.
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:param template: Template of stack you want to create.
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:param params: Stack Input Params/Environment
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:param files: files referenced from the environment.
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:param args: Request parameters/args passed from API
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"""
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return self.call(ctxt,
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self.make_msg('preview_stack', stack_name=stack_name,
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template=template,
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params=params, files=files, args=args))
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def create_stack(self, ctxt, stack_name, template, params, files, args):
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"""
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The create_stack method creates a new stack using the template
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provided.
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Note that at this stage the template has already been fetched from the
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heat-api process if using a template-url.
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:param ctxt: RPC context.
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:param stack_name: Name of the stack you want to create.
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:param template: Template of stack you want to create.
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:param params: Stack Input Params/Environment
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:param files: files referenced from the environment.
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:param args: Request parameters/args passed from API
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"""
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return self.call(ctxt,
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self.make_msg('create_stack', stack_name=stack_name,
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template=template,
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params=params, files=files, args=args))
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def update_stack(self, ctxt, stack_identity, template, params,
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files, args):
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"""
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The update_stack method updates an existing stack based on the
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provided template and parameters.
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Note that at this stage the template has already been fetched from the
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heat-api process if using a template-url.
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:param ctxt: RPC context.
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:param stack_name: Name of the stack you want to create.
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:param template: Template of stack you want to create.
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:param params: Stack Input Params/Environment
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:param files: files referenced from the environment.
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:param args: Request parameters/args passed from API
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"""
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return self.call(ctxt, self.make_msg('update_stack',
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stack_identity=stack_identity,
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template=template,
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params=params,
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files=files,
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args=args))
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def validate_template(self, ctxt, template, params=None):
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"""
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The validate_template method uses the stack parser to check
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the validity of a template.
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:param ctxt: RPC context.
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:param template: Template of stack you want to create.
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:param params: Stack Input Params/Environment
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"""
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return self.call(ctxt, self.make_msg('validate_template',
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template=template,
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params=params))
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def authenticated_to_backend(self, ctxt):
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"""
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Verify that the credentials in the RPC context are valid for the
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current cloud backend.
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:param ctxt: RPC context.
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"""
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return self.call(ctxt, self.make_msg('authenticated_to_backend'))
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def get_template(self, ctxt, stack_identity):
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"""
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Get the template.
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:param ctxt: RPC context.
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:param stack_name: Name of the stack you want to see.
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"""
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return self.call(ctxt, self.make_msg('get_template',
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stack_identity=stack_identity))
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def delete_stack(self, ctxt, stack_identity, cast=True):
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"""
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The delete_stack method deletes a given stack.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack you want to delete.
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:param cast: cast the message or use call (default: True)
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"""
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rpc_method = self.cast if cast else self.call
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return rpc_method(ctxt,
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self.make_msg('delete_stack',
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stack_identity=stack_identity))
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def abandon_stack(self, ctxt, stack_identity):
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"""
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The abandon_stack method deletes a given stack but
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resources would not be deleted.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack you want to abandon.
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"""
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return self.call(ctxt,
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self.make_msg('abandon_stack',
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stack_identity=stack_identity))
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def list_resource_types(self, ctxt, support_status=None):
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"""
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Get a list of valid resource types.
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:param ctxt: RPC context.
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"""
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return self.call(ctxt, self.make_msg('list_resource_types',
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support_status=support_status),
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version='1.1')
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def resource_schema(self, ctxt, type_name):
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"""
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Get the schema for a resource type.
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:param ctxt: RPC context.
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"""
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return self.call(ctxt, self.make_msg('resource_schema',
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type_name=type_name))
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def generate_template(self, ctxt, type_name):
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"""
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Generate a template based on the specified type.
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:param ctxt: RPC context.
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:param type_name: The resource type name to generate a template for.
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"""
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return self.call(ctxt, self.make_msg('generate_template',
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type_name=type_name))
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def list_events(self, ctxt, stack_identity, filters=None, limit=None,
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marker=None, sort_keys=None, sort_dir=None,):
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"""
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The list_events method lists all events associated with a given stack.
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It supports pagination (``limit`` and ``marker``),
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sorting (``sort_keys`` and ``sort_dir``) and filtering(filters)
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of the results.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack you want to get events for
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:param filters: a dict with attribute:value to filter the list
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:param limit: the number of events to list (integer or string)
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:param marker: the ID of the last event in the previous page
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:param sort_keys: an array of fields used to sort the list
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:param sort_dir: the direction of the sort ('asc' or 'desc').
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"""
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return self.call(ctxt, self.make_msg('list_events',
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stack_identity=stack_identity,
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filters=filters,
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limit=limit,
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marker=marker,
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sort_keys=sort_keys,
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sort_dir=sort_dir))
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def describe_stack_resource(self, ctxt, stack_identity, resource_name):
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"""
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Get detailed resource information about a particular resource.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack.
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:param resource_name: the Resource.
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"""
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return self.call(ctxt, self.make_msg('describe_stack_resource',
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stack_identity=stack_identity,
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resource_name=resource_name))
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def find_physical_resource(self, ctxt, physical_resource_id):
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"""
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Return an identifier for the resource with the specified physical
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resource ID.
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:param ctxt RPC context.
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:param physcial_resource_id The physical resource ID to look up.
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"""
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return self.call(ctxt,
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self.make_msg(
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'find_physical_resource',
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physical_resource_id=physical_resource_id))
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def describe_stack_resources(self, ctxt, stack_identity, resource_name):
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"""
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Get detailed resource information about one or more resources.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack.
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:param resource_name: the Resource.
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"""
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return self.call(ctxt, self.make_msg('describe_stack_resources',
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stack_identity=stack_identity,
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resource_name=resource_name))
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def list_stack_resources(self, ctxt, stack_identity, nested_depth=0):
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"""
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List the resources belonging to a stack.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack.
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:param nested_depth: Levels of nested stacks of which list resources.
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"""
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return self.call(ctxt, self.make_msg('list_stack_resources',
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stack_identity=stack_identity,
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nested_depth=nested_depth))
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def stack_suspend(self, ctxt, stack_identity):
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return self.call(ctxt, self.make_msg('stack_suspend',
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stack_identity=stack_identity))
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def stack_resume(self, ctxt, stack_identity):
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return self.call(ctxt, self.make_msg('stack_resume',
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stack_identity=stack_identity))
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def metadata_update(self, ctxt, stack_identity, resource_name, metadata):
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"""
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Update the metadata for the given resource.
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"""
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return self.call(ctxt, self.make_msg('metadata_update',
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stack_identity=stack_identity,
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resource_name=resource_name,
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metadata=metadata))
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def resource_signal(self, ctxt, stack_identity, resource_name, details):
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"""
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Generate an alarm on the resource.
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:param ctxt: RPC context.
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:param stack_identity: Name of the stack.
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:param resource_name: the Resource.
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:param details: the details of the signal.
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"""
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return self.call(ctxt, self.make_msg('resource_signal',
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stack_identity=stack_identity,
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resource_name=resource_name,
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details=details))
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def create_watch_data(self, ctxt, watch_name, stats_data):
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'''
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This could be used by CloudWatch and WaitConditions
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and treat HA service events like any other CloudWatch.
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:param ctxt: RPC context.
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:param watch_name: Name of the watch/alarm
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:param stats_data: The data to post.
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'''
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return self.call(ctxt, self.make_msg('create_watch_data',
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watch_name=watch_name,
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stats_data=stats_data))
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def show_watch(self, ctxt, watch_name):
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"""
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The show_watch method returns the attributes of one watch
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or all watches if no watch_name is passed
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:param ctxt: RPC context.
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:param watch_name: Name of the watch/alarm you want to see,
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or None to see all
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"""
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return self.call(ctxt, self.make_msg('show_watch',
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watch_name=watch_name))
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def show_watch_metric(self, ctxt, metric_namespace=None, metric_name=None):
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"""
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The show_watch_metric method returns the datapoints associated
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with a specified metric, or all metrics if no metric_name is passed
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:param ctxt: RPC context.
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:param metric_namespace: Name of the namespace you want to see,
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or None to see all
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:param metric_name: Name of the metric you want to see,
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or None to see all
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"""
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return self.call(ctxt, self.make_msg('show_watch_metric',
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metric_namespace=metric_namespace,
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metric_name=metric_name))
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def set_watch_state(self, ctxt, watch_name, state):
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'''
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Temporarily set the state of a given watch
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:param ctxt: RPC context.
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:param watch_name: Name of the watch
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:param state: State (must be one defined in WatchRule class)
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'''
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return self.call(ctxt, self.make_msg('set_watch_state',
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watch_name=watch_name,
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state=state))
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def get_revision(self, ctxt):
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return self.call(ctxt, self.make_msg('get_revision'))
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def show_software_config(self, cnxt, config_id):
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return self.call(cnxt, self.make_msg('show_software_config',
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config_id=config_id))
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def create_software_config(self, cnxt, group, name, config,
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inputs=None, outputs=None, options=None):
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inputs = inputs or []
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outputs = outputs or []
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options = options or {}
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return self.call(cnxt, self.make_msg('create_software_config',
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group=group,
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name=name,
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config=config,
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inputs=inputs,
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outputs=outputs,
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options=options))
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def delete_software_config(self, cnxt, config_id):
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return self.call(cnxt, self.make_msg('delete_software_config',
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config_id=config_id))
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def list_software_deployments(self, cnxt, server_id=None):
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return self.call(cnxt, self.make_msg('list_software_deployments',
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server_id=server_id))
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def metadata_software_deployments(self, cnxt, server_id):
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return self.call(cnxt, self.make_msg('metadata_software_deployments',
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server_id=server_id))
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def show_software_deployment(self, cnxt, deployment_id):
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return self.call(cnxt, self.make_msg('show_software_deployment',
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deployment_id=deployment_id))
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def create_software_deployment(self, cnxt, server_id, config_id=None,
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input_values=None, action='INIT',
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status='COMPLETE', status_reason='',
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stack_user_project_id=None):
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input_values = input_values or {}
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return self.call(cnxt, self.make_msg(
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'create_software_deployment',
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server_id=server_id,
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config_id=config_id,
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input_values=input_values,
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action=action,
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status=status,
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status_reason=status_reason,
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stack_user_project_id=stack_user_project_id))
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def update_software_deployment(self, cnxt, deployment_id,
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config_id=None, input_values=None,
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output_values=None, action=None,
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status=None, status_reason=None):
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return self.call(cnxt, self.make_msg('update_software_deployment',
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deployment_id=deployment_id,
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config_id=config_id,
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input_values=input_values,
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output_values=output_values,
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action=action,
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status=status,
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status_reason=status_reason))
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def delete_software_deployment(self, cnxt, deployment_id):
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return self.call(cnxt, self.make_msg('delete_software_deployment',
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deployment_id=deployment_id))
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def stack_snapshot(self, ctxt, stack_identity, name):
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return self.call(ctxt, self.make_msg('stack_snapshot',
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stack_identity=stack_identity,
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name=name))
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def show_snapshot(self, cnxt, stack_identity, snapshot_id):
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return self.call(cnxt, self.make_msg('show_snapshot',
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stack_identity=stack_identity,
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snapshot_id=snapshot_id))
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def delete_snapshot(self, cnxt, stack_identity, snapshot_id):
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return self.call(cnxt, self.make_msg('delete_snapshot',
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stack_identity=stack_identity,
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snapshot_id=snapshot_id))
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