OpenStack Orchestration (Heat)
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heat/heat/rpc/client.py

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28 KiB

#
# Copyright 2012, Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Client side of the heat engine RPC API.
"""
from heat.common import messaging
from heat.rpc import api as rpc_api
class EngineClient(object):
'''Client side of the heat engine rpc API.
API version history::
1.0 - Initial version.
1.1 - Add support_status argument to list_resource_types()
1.4 - Add support for service list
1.9 - Add template_type option to generate_template()
1.10 - Add support for software config list
1.11 - Add support for template versions list
'''
BASE_RPC_API_VERSION = '1.0'
def __init__(self):
self._client = messaging.get_rpc_client(
topic=rpc_api.ENGINE_TOPIC,
version=self.BASE_RPC_API_VERSION)
@staticmethod
def make_msg(method, **kwargs):
return method, kwargs
def call(self, ctxt, msg, version=None):
method, kwargs = msg
if version is not None:
client = self._client.prepare(version=version)
else:
client = self._client
return client.call(ctxt, method, **kwargs)
def cast(self, ctxt, msg, version=None):
method, kwargs = msg
if version is not None:
client = self._client.prepare(version=version)
else:
client = self._client
return client.cast(ctxt, method, **kwargs)
def local_error_name(self, error):
"""
Returns the name of the error with any _Remote postfix removed.
:param error: Remote raised error to derive the name from.
"""
error_name = error.__class__.__name__
return error_name.split('_Remote')[0]
def ignore_error_named(self, error, name):
"""
Raises the error unless its local name matches the supplied name
:param error: Remote raised error to derive the local name from.
:param name: Name to compare local name to.
"""
if self.local_error_name(error) != name:
raise error
def identify_stack(self, ctxt, stack_name):
"""
The identify_stack method returns the full stack identifier for a
single, live stack given the stack name.
:param ctxt: RPC context.
:param stack_name: Name of the stack you want to see,
or None to see all
"""
return self.call(ctxt, self.make_msg('identify_stack',
stack_name=stack_name))
def list_stacks(self, ctxt, limit=None, marker=None, sort_keys=None,
sort_dir=None, filters=None, tenant_safe=True,
show_deleted=False, show_nested=False, show_hidden=False,
tags=None, tags_any=None, not_tags=None,
not_tags_any=None):
"""
The list_stacks method returns attributes of all stacks. It supports
pagination (``limit`` and ``marker``), sorting (``sort_keys`` and
``sort_dir``) and filtering (``filters``) of the results.
:param ctxt: RPC context.
:param limit: the number of stacks to list (integer or string)
:param marker: the ID of the last item in the previous page
:param sort_keys: an array of fields used to sort the list
:param sort_dir: the direction of the sort ('asc' or 'desc')
:param filters: a dict with attribute:value to filter the list
:param tenant_safe: if true, scope the request by the current tenant
:param show_deleted: if true, show soft-deleted stacks
:param show_nested: if true, show nested stacks
:param show_hidden: if true, show hidden stacks
:param tags: show stacks containing these tags, combine multiple
tags using the boolean AND expression
:param tags_any: show stacks containing these tags, combine multiple
tags using the boolean OR expression
:param not_tags: show stacks not containing these tags, combine
multiple tags using the boolean AND expression
:param not_tags_any: show stacks not containing these tags, combine
multiple tags using the boolean OR expression
:returns: a list of stacks
"""
return self.call(ctxt,
self.make_msg('list_stacks', limit=limit,
sort_keys=sort_keys, marker=marker,
sort_dir=sort_dir, filters=filters,
tenant_safe=tenant_safe,
show_deleted=show_deleted,
show_nested=show_nested,
show_hidden=show_hidden,
tags=tags, tags_any=tags_any,
not_tags=not_tags,
not_tags_any=not_tags_any),
version='1.8')
def count_stacks(self, ctxt, filters=None, tenant_safe=True,
show_deleted=False, show_nested=False, show_hidden=False,
tags=None, tags_any=None, not_tags=None,
not_tags_any=None):
"""
Return the number of stacks that match the given filters
:param ctxt: RPC context.
:param filters: a dict of ATTR:VALUE to match against stacks
:param tenant_safe: if true, scope the request by the current tenant
:param show_deleted: if true, count will include the deleted stacks
:param show_nested: if true, count will include nested stacks
:param show_hidden: if true, count will include hidden stacks
:param tags: count stacks containing these tags, combine multiple tags
using the boolean AND expression
:param tags_any: count stacks containing these tags, combine multiple
tags using the boolean OR expression
:param not_tags: count stacks not containing these tags, combine
multiple tags using the boolean AND expression
:param not_tags_any: count stacks not containing these tags, combine
multiple tags using the boolean OR expression
:returns: a integer representing the number of matched stacks
"""
return self.call(ctxt, self.make_msg('count_stacks',
filters=filters,
tenant_safe=tenant_safe,
show_deleted=show_deleted,
show_nested=show_nested,
show_hidden=show_hidden,
tags=tags,
tags_any=tags_any,
not_tags=not_tags,
not_tags_any=not_tags_any),
version='1.8')
def show_stack(self, ctxt, stack_identity):
"""
Return detailed information about one or all stacks.
:param ctxt: RPC context.
:param stack_identity: Name of the stack you want to show, or None to
show all
"""
return self.call(ctxt, self.make_msg('show_stack',
stack_identity=stack_identity))
def preview_stack(self, ctxt, stack_name, template, params, files, args):
"""
Simulates a new stack using the provided template.
Note that at this stage the template has already been fetched from the
heat-api process if using a template-url.
:param ctxt: RPC context.
:param stack_name: Name of the stack you want to create.
:param template: Template of stack you want to create.
:param params: Stack Input Params/Environment
:param files: files referenced from the environment.
:param args: Request parameters/args passed from API
"""
return self.call(ctxt,
self.make_msg('preview_stack', stack_name=stack_name,
template=template,
params=params, files=files, args=args))
def create_stack(self, ctxt, stack_name, template, params, files, args):
"""
The create_stack method creates a new stack using the template
provided.
Note that at this stage the template has already been fetched from the
heat-api process if using a template-url.
:param ctxt: RPC context.
:param stack_name: Name of the stack you want to create.
:param template: Template of stack you want to create.
:param params: Stack Input Params/Environment
:param files: files referenced from the environment.
:param args: Request parameters/args passed from API
"""
return self._create_stack(ctxt, stack_name, template, params, files,
args)
def _create_stack(self, ctxt, stack_name, template, params, files, args,
owner_id=None, nested_depth=0, user_creds_id=None,
stack_user_project_id=None, parent_resource_name=None):
"""
Internal create_stack interface for engine-to-engine communication via
RPC. Allows some additional options which should not be exposed to
users via the API:
:param owner_id: parent stack ID for nested stacks
:param nested_depth: nested depth for nested stacks
:param user_creds_id: user_creds record for nested stack
:param stack_user_project_id: stack user project for nested stack
:param parent_resource_name: the parent resource name
"""
return self.call(
ctxt, self.make_msg('create_stack', stack_name=stack_name,
template=template,
params=params, files=files, args=args,
owner_id=owner_id,
nested_depth=nested_depth,
user_creds_id=user_creds_id,
stack_user_project_id=stack_user_project_id,
parent_resource_name=parent_resource_name),
version='1.8')
def update_stack(self, ctxt, stack_identity, template, params,
files, args):
"""
The update_stack method updates an existing stack based on the
provided template and parameters.
Note that at this stage the template has already been fetched from the
heat-api process if using a template-url.
:param ctxt: RPC context.
:param stack_name: Name of the stack you want to create.
:param template: Template of stack you want to create.
:param params: Stack Input Params/Environment
:param files: files referenced from the environment.
:param args: Request parameters/args passed from API
"""
return self.call(ctxt, self.make_msg('update_stack',
stack_identity=stack_identity,
template=template,
params=params,
files=files,
args=args))
def validate_template(self, ctxt, template, params=None):
"""
The validate_template method uses the stack parser to check
the validity of a template.
:param ctxt: RPC context.
:param template: Template of stack you want to create.
:param params: Stack Input Params/Environment
"""
return self.call(ctxt, self.make_msg('validate_template',
template=template,
params=params))
def authenticated_to_backend(self, ctxt):
"""
Verify that the credentials in the RPC context are valid for the
current cloud backend.
:param ctxt: RPC context.
"""
return self.call(ctxt, self.make_msg('authenticated_to_backend'))
def get_template(self, ctxt, stack_identity):
"""
Get the template.
:param ctxt: RPC context.
:param stack_name: Name of the stack you want to see.
"""
return self.call(ctxt, self.make_msg('get_template',
stack_identity=stack_identity))
def delete_stack(self, ctxt, stack_identity, cast=True):
"""
The delete_stack method deletes a given stack.
:param ctxt: RPC context.
:param stack_identity: Name of the stack you want to delete.
:param cast: cast the message or use call (default: True)
"""
rpc_method = self.cast if cast else self.call
return rpc_method(ctxt,
self.make_msg('delete_stack',
stack_identity=stack_identity))
def abandon_stack(self, ctxt, stack_identity):
"""
The abandon_stack method deletes a given stack but
resources would not be deleted.
:param ctxt: RPC context.
:param stack_identity: Name of the stack you want to abandon.
"""
return self.call(ctxt,
self.make_msg('abandon_stack',
stack_identity=stack_identity))
def list_resource_types(self, ctxt, support_status=None):
"""
Get a list of valid resource types.
:param ctxt: RPC context.
"""
return self.call(ctxt, self.make_msg('list_resource_types',
support_status=support_status),
version='1.1')
def list_template_versions(self, ctxt):
"""
Get a list of available template versions
:param ctxt: RPC context.
"""
return self.call(ctxt, self.make_msg('list_template_versions'),
version='1.11')
def resource_schema(self, ctxt, type_name):
"""
Get the schema for a resource type.
:param ctxt: RPC context.
"""
return self.call(ctxt, self.make_msg('resource_schema',
type_name=type_name))
def generate_template(self, ctxt, type_name, template_type='cfn'):
"""
Generate a template based on the specified type.
:param ctxt: RPC context.
:param type_name: The resource type name to generate a template for.
:param template_type: the template type to generate, cfn or hot.
"""
return self.call(ctxt, self.make_msg('generate_template',
type_name=type_name,
template_type=template_type),
version='1.9')
def list_events(self, ctxt, stack_identity, filters=None, limit=None,
marker=None, sort_keys=None, sort_dir=None,):
"""
The list_events method lists all events associated with a given stack.
It supports pagination (``limit`` and ``marker``),
sorting (``sort_keys`` and ``sort_dir``) and filtering(filters)
of the results.
:param ctxt: RPC context.
:param stack_identity: Name of the stack you want to get events for
:param filters: a dict with attribute:value to filter the list
:param limit: the number of events to list (integer or string)
:param marker: the ID of the last event in the previous page
:param sort_keys: an array of fields used to sort the list
:param sort_dir: the direction of the sort ('asc' or 'desc').
"""
return self.call(ctxt, self.make_msg('list_events',
stack_identity=stack_identity,
filters=filters,
limit=limit,
marker=marker,
sort_keys=sort_keys,
sort_dir=sort_dir))
def describe_stack_resource(self, ctxt, stack_identity, resource_name,
with_attr=None):
"""
Get detailed resource information about a particular resource.
:param ctxt: RPC context.
:param stack_identity: Name of the stack.
:param resource_name: the Resource.
"""
return self.call(ctxt,
self.make_msg('describe_stack_resource',
stack_identity=stack_identity,
resource_name=resource_name,
with_attr=with_attr),
version='1.2')
def find_physical_resource(self, ctxt, physical_resource_id):
"""
Return an identifier for the resource with the specified physical
resource ID.
:param ctxt RPC context.
:param physcial_resource_id The physical resource ID to look up.
"""
return self.call(ctxt,
self.make_msg(
'find_physical_resource',
physical_resource_id=physical_resource_id))
def describe_stack_resources(self, ctxt, stack_identity, resource_name):
"""
Get detailed resource information about one or more resources.
:param ctxt: RPC context.
:param stack_identity: Name of the stack.
:param resource_name: the Resource.
"""
return self.call(ctxt, self.make_msg('describe_stack_resources',
stack_identity=stack_identity,
resource_name=resource_name))
def list_stack_resources(self, ctxt, stack_identity, nested_depth=0):
"""
List the resources belonging to a stack.
:param ctxt: RPC context.
:param stack_identity: Name of the stack.
:param nested_depth: Levels of nested stacks of which list resources.
"""
return self.call(ctxt, self.make_msg('list_stack_resources',
stack_identity=stack_identity,
nested_depth=nested_depth))
def stack_suspend(self, ctxt, stack_identity):
return self.call(ctxt, self.make_msg('stack_suspend',
stack_identity=stack_identity))
def stack_resume(self, ctxt, stack_identity):
return self.call(ctxt, self.make_msg('stack_resume',
stack_identity=stack_identity))
def stack_check(self, ctxt, stack_identity):
return self.call(ctxt, self.make_msg('stack_check',
stack_identity=stack_identity))
def stack_cancel_update(self, ctxt, stack_identity):
return self.call(ctxt, self.make_msg('stack_cancel_update',
stack_identity=stack_identity))
def resource_signal(self, ctxt, stack_identity, resource_name, details,
sync_call=False):
"""
Generate an alarm on the resource.
:param ctxt: RPC context.
:param stack_identity: Name of the stack.
:param resource_name: the Resource.
:param details: the details of the signal.
"""
return self.call(ctxt, self.make_msg('resource_signal',
stack_identity=stack_identity,
resource_name=resource_name,
details=details,
sync_call=sync_call),
version='1.3')
def create_watch_data(self, ctxt, watch_name, stats_data):
'''
This could be used by CloudWatch and WaitConditions
and treat HA service events like any other CloudWatch.
:param ctxt: RPC context.
:param watch_name: Name of the watch/alarm
:param stats_data: The data to post.
'''
return self.call(ctxt, self.make_msg('create_watch_data',
watch_name=watch_name,
stats_data=stats_data))
def show_watch(self, ctxt, watch_name):
"""
The show_watch method returns the attributes of one watch
or all watches if no watch_name is passed
:param ctxt: RPC context.
:param watch_name: Name of the watch/alarm you want to see,
or None to see all
"""
return self.call(ctxt, self.make_msg('show_watch',
watch_name=watch_name))
def show_watch_metric(self, ctxt, metric_namespace=None, metric_name=None):
"""
The show_watch_metric method returns the datapoints associated
with a specified metric, or all metrics if no metric_name is passed
:param ctxt: RPC context.
:param metric_namespace: Name of the namespace you want to see,
or None to see all
:param metric_name: Name of the metric you want to see,
or None to see all
"""
return self.call(ctxt, self.make_msg('show_watch_metric',
metric_namespace=metric_namespace,
metric_name=metric_name))
def set_watch_state(self, ctxt, watch_name, state):
'''
Temporarily set the state of a given watch
:param ctxt: RPC context.
:param watch_name: Name of the watch
:param state: State (must be one defined in WatchRule class)
'''
return self.call(ctxt, self.make_msg('set_watch_state',
watch_name=watch_name,
state=state))
def get_revision(self, ctxt):
return self.call(ctxt, self.make_msg('get_revision'))
def show_software_config(self, cnxt, config_id):
return self.call(cnxt, self.make_msg('show_software_config',
config_id=config_id))
def list_software_configs(self, cnxt, limit=None, marker=None,
tenant_safe=True):
return self.call(cnxt,
self.make_msg('list_software_configs',
limit=limit,
marker=marker,
tenant_safe=tenant_safe),
version='1.10')
def create_software_config(self, cnxt, group, name, config,
inputs=None, outputs=None, options=None):
inputs = inputs or []
outputs = outputs or []
options = options or {}
return self.call(cnxt, self.make_msg('create_software_config',
group=group,
name=name,
config=config,
inputs=inputs,
outputs=outputs,
options=options))
def delete_software_config(self, cnxt, config_id):
return self.call(cnxt, self.make_msg('delete_software_config',
config_id=config_id))
def list_software_deployments(self, cnxt, server_id=None):
return self.call(cnxt, self.make_msg('list_software_deployments',
server_id=server_id))
def metadata_software_deployments(self, cnxt, server_id):
return self.call(cnxt, self.make_msg('metadata_software_deployments',
server_id=server_id))
def show_software_deployment(self, cnxt, deployment_id):
return self.call(cnxt, self.make_msg('show_software_deployment',
deployment_id=deployment_id))
def create_software_deployment(self, cnxt, server_id, config_id=None,
input_values=None, action='INIT',
status='COMPLETE', status_reason='',
stack_user_project_id=None):
input_values = input_values or {}
return self.call(cnxt, self.make_msg(
'create_software_deployment',
server_id=server_id,
config_id=config_id,
input_values=input_values,
action=action,
status=status,
status_reason=status_reason,
stack_user_project_id=stack_user_project_id))
def update_software_deployment(self, cnxt, deployment_id,
config_id=None, input_values=None,
output_values=None, action=None,
status=None, status_reason=None,
updated_at=None):
return self.call(
cnxt, self.make_msg('update_software_deployment',
deployment_id=deployment_id,
config_id=config_id,
input_values=input_values,
output_values=output_values,
action=action,
status=status,
status_reason=status_reason,
updated_at=updated_at),
version='1.5')
def delete_software_deployment(self, cnxt, deployment_id):
return self.call(cnxt, self.make_msg('delete_software_deployment',
deployment_id=deployment_id))
def signal_software_deployment(self, cnxt, deployment_id, details,
updated_at=None):
return self.call(
cnxt, self.make_msg('signal_software_deployment',
deployment_id=deployment_id,
details=details,
updated_at=updated_at),
version='1.6')
def stack_snapshot(self, ctxt, stack_identity, name):
return self.call(ctxt, self.make_msg('stack_snapshot',
stack_identity=stack_identity,
name=name))
def show_snapshot(self, cnxt, stack_identity, snapshot_id):
return self.call(cnxt, self.make_msg('show_snapshot',
stack_identity=stack_identity,
snapshot_id=snapshot_id))
def delete_snapshot(self, cnxt, stack_identity, snapshot_id):
return self.call(cnxt, self.make_msg('delete_snapshot',
stack_identity=stack_identity,
snapshot_id=snapshot_id))
def stack_list_snapshots(self, cnxt, stack_identity):
return self.call(cnxt, self.make_msg('stack_list_snapshots',
stack_identity=stack_identity))
def stack_restore(self, cnxt, stack_identity, snapshot_id):
return self.call(cnxt, self.make_msg('stack_restore',
stack_identity=stack_identity,
snapshot_id=snapshot_id))
def list_services(self, cnxt):
return self.call(cnxt, self.make_msg('list_services'), version='1.4')