deb-heat/heat/engine/api.py
Angus Salkeld a43a1a94ab Don't pass the parent_resource object into Stack()
The reason for doing this is, is the difficulty of passing this
via RPC.

- pass the parent_resource name in, not the object
- make parent_resource a property that is looked as needed

There are 3 things that use "parent_resource"
1. Fn::ResourceFacade - OK, no getting around this
2. root_stack - used for determining the total resources in a stack
   (TODO: this should use a db lookup)

part of blueprint decouple-nested
Change-Id: Ia70395716085729176d869bf7564170db76bc24f
2015-03-03 15:36:05 +10:00

431 lines
15 KiB
Python

#
# 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.
import collections
from oslo_log import log as logging
from oslo_utils import timeutils
from heat.common.i18n import _
from heat.common.i18n import _LE
from heat.common import param_utils
from heat.common import template_format
from heat.engine import constraints as constr
from heat.rpc import api as rpc_api
LOG = logging.getLogger(__name__)
def extract_args(params):
'''
Extract any arguments passed as parameters through the API and return them
as a dictionary. This allows us to filter the passed args and do type
conversion where appropriate
'''
kwargs = {}
timeout_mins = params.get(rpc_api.PARAM_TIMEOUT)
if timeout_mins not in ('0', 0, None):
try:
timeout = int(timeout_mins)
except (ValueError, TypeError):
LOG.exception(_LE('Timeout conversion failed'))
else:
if timeout > 0:
kwargs[rpc_api.PARAM_TIMEOUT] = timeout
else:
raise ValueError(_('Invalid timeout value %s') % timeout)
if rpc_api.PARAM_DISABLE_ROLLBACK in params:
disable_rollback = param_utils.extract_bool(
params[rpc_api.PARAM_DISABLE_ROLLBACK])
kwargs[rpc_api.PARAM_DISABLE_ROLLBACK] = disable_rollback
if rpc_api.PARAM_SHOW_DELETED in params:
params[rpc_api.PARAM_SHOW_DELETED] = param_utils.extract_bool(
params[rpc_api.PARAM_SHOW_DELETED])
adopt_data = params.get(rpc_api.PARAM_ADOPT_STACK_DATA)
if adopt_data:
try:
adopt_data = template_format.simple_parse(adopt_data)
except ValueError as exc:
raise ValueError(_('Invalid adopt data: %s') % exc)
kwargs[rpc_api.PARAM_ADOPT_STACK_DATA] = adopt_data
return kwargs
def format_stack_outputs(stack, outputs):
'''
Return a representation of the given output template for the given stack
that matches the API output expectations.
'''
def format_stack_output(k):
output = {
rpc_api.OUTPUT_DESCRIPTION: outputs[k].get('Description',
'No description given'),
rpc_api.OUTPUT_KEY: k,
rpc_api.OUTPUT_VALUE: stack.output(k)
}
if outputs[k].get('error_msg'):
output.update({rpc_api.OUTPUT_ERROR: outputs[k].get('error_msg')})
return output
return [format_stack_output(key) for key in outputs]
def format_stack(stack, preview=False):
'''
Return a representation of the given stack that matches the API output
expectations.
'''
updated_time = stack.updated_time and timeutils.isotime(stack.updated_time)
info = {
rpc_api.STACK_NAME: stack.name,
rpc_api.STACK_ID: dict(stack.identifier()),
rpc_api.STACK_CREATION_TIME: timeutils.isotime(stack.created_time),
rpc_api.STACK_UPDATED_TIME: updated_time,
rpc_api.STACK_NOTIFICATION_TOPICS: [], # TODO(?) Not implemented yet
rpc_api.STACK_PARAMETERS: stack.parameters.map(str),
rpc_api.STACK_DESCRIPTION: stack.t[stack.t.DESCRIPTION],
rpc_api.STACK_TMPL_DESCRIPTION: stack.t[stack.t.DESCRIPTION],
rpc_api.STACK_CAPABILITIES: [], # TODO(?) Not implemented yet
rpc_api.STACK_DISABLE_ROLLBACK: stack.disable_rollback,
rpc_api.STACK_TIMEOUT: stack.timeout_mins,
rpc_api.STACK_OWNER: stack.username,
rpc_api.STACK_PARENT: stack.owner_id,
rpc_api.STACK_USER_PROJECT_ID: stack.stack_user_project_id,
}
if not preview:
update_info = {
rpc_api.STACK_ACTION: stack.action or '',
rpc_api.STACK_STATUS: stack.status or '',
rpc_api.STACK_STATUS_DATA: stack.status_reason,
}
info.update(update_info)
# allow users to view the outputs of stacks
if (stack.action != stack.DELETE and stack.status != stack.IN_PROGRESS):
info[rpc_api.STACK_OUTPUTS] = format_stack_outputs(stack,
stack.outputs)
return info
def format_resource_attributes(resource, with_attr=None):
def resolve(attr, resolver):
try:
return resolver[attr]
except Exception:
return None
resolver = resource.attributes
if 'show' in resolver.keys():
show_attr = resolver['show']
if isinstance(show_attr, collections.Mapping):
resolver = show_attr
if not with_attr:
with_attr = []
attributes = set(resolver.keys() + with_attr)
return dict((attr, resolve(attr, resolver))
for attr in attributes)
def format_resource_properties(resource):
def get_property(prop):
try:
return resource.properties[prop]
except (KeyError, ValueError):
return None
return dict((prop, get_property(prop))
for prop in resource.properties_schema.keys())
def format_stack_resource(resource, detail=True, with_props=False,
with_attr=None):
'''
Return a representation of the given resource that matches the API output
expectations.
'''
last_updated_time = resource.updated_time or resource.created_time
res = {
rpc_api.RES_UPDATED_TIME: timeutils.isotime(last_updated_time),
rpc_api.RES_NAME: resource.name,
rpc_api.RES_PHYSICAL_ID: resource.resource_id or '',
rpc_api.RES_ACTION: resource.action,
rpc_api.RES_STATUS: resource.status,
rpc_api.RES_STATUS_DATA: resource.status_reason,
rpc_api.RES_TYPE: resource.type(),
rpc_api.RES_ID: dict(resource.identifier()),
rpc_api.RES_STACK_ID: dict(resource.stack.identifier()),
rpc_api.RES_STACK_NAME: resource.stack.name,
rpc_api.RES_REQUIRED_BY: resource.required_by(),
}
if (hasattr(resource, 'nested') and callable(resource.nested) and
resource.nested() is not None):
res[rpc_api.RES_NESTED_STACK_ID] = dict(resource.nested().identifier())
if resource.stack.parent_resource_name:
res[rpc_api.RES_PARENT_RESOURCE] = resource.stack.parent_resource_name
if detail:
res[rpc_api.RES_DESCRIPTION] = resource.t.description
res[rpc_api.RES_METADATA] = resource.metadata_get()
res[rpc_api.RES_SCHEMA_ATTRIBUTES] = format_resource_attributes(
resource, with_attr)
if with_props:
res[rpc_api.RES_SCHEMA_PROPERTIES] = format_resource_properties(
resource)
return res
def format_stack_preview(stack):
def format_resource(res):
if isinstance(res, list):
return map(format_resource, res)
return format_stack_resource(res, with_props=True)
fmt_stack = format_stack(stack, preview=True)
fmt_resources = map(format_resource, stack.preview_resources())
fmt_stack['resources'] = fmt_resources
return fmt_stack
def format_event(event):
stack_identifier = event.stack.identifier()
result = {
rpc_api.EVENT_ID: dict(event.identifier()),
rpc_api.EVENT_STACK_ID: dict(stack_identifier),
rpc_api.EVENT_STACK_NAME: stack_identifier.stack_name,
rpc_api.EVENT_TIMESTAMP: timeutils.isotime(event.timestamp),
rpc_api.EVENT_RES_NAME: event.resource_name,
rpc_api.EVENT_RES_PHYSICAL_ID: event.physical_resource_id,
rpc_api.EVENT_RES_ACTION: event.action,
rpc_api.EVENT_RES_STATUS: event.status,
rpc_api.EVENT_RES_STATUS_DATA: event.reason,
rpc_api.EVENT_RES_TYPE: event.resource_type,
rpc_api.EVENT_RES_PROPERTIES: event.resource_properties,
}
return result
def format_notification_body(stack):
# some other possibilities here are:
# - template name
# - template size
# - resource count
if stack.status is not None and stack.action is not None:
state = '_'.join(stack.state)
else:
state = 'Unknown'
result = {
rpc_api.NOTIFY_TENANT_ID: stack.context.tenant_id,
rpc_api.NOTIFY_USER_ID: stack.context.user,
rpc_api.NOTIFY_STACK_ID: stack.identifier().arn(),
rpc_api.NOTIFY_STACK_NAME: stack.name,
rpc_api.NOTIFY_STATE: state,
rpc_api.NOTIFY_STATE_REASON: stack.status_reason,
rpc_api.NOTIFY_CREATE_AT: timeutils.isotime(stack.created_time),
}
return result
def format_watch(watch):
result = {
rpc_api.WATCH_ACTIONS_ENABLED: watch.rule.get(
rpc_api.RULE_ACTIONS_ENABLED),
rpc_api.WATCH_ALARM_ACTIONS: watch.rule.get(
rpc_api.RULE_ALARM_ACTIONS),
rpc_api.WATCH_TOPIC: watch.rule.get(rpc_api.RULE_TOPIC),
rpc_api.WATCH_UPDATED_TIME: timeutils.isotime(watch.updated_at),
rpc_api.WATCH_DESCRIPTION: watch.rule.get(rpc_api.RULE_DESCRIPTION),
rpc_api.WATCH_NAME: watch.name,
rpc_api.WATCH_COMPARISON: watch.rule.get(rpc_api.RULE_COMPARISON),
rpc_api.WATCH_DIMENSIONS: watch.rule.get(
rpc_api.RULE_DIMENSIONS) or [],
rpc_api.WATCH_PERIODS: watch.rule.get(rpc_api.RULE_PERIODS),
rpc_api.WATCH_INSUFFICIENT_ACTIONS:
watch.rule.get(rpc_api.RULE_INSUFFICIENT_ACTIONS),
rpc_api.WATCH_METRIC_NAME: watch.rule.get(rpc_api.RULE_METRIC_NAME),
rpc_api.WATCH_NAMESPACE: watch.rule.get(rpc_api.RULE_NAMESPACE),
rpc_api.WATCH_OK_ACTIONS: watch.rule.get(rpc_api.RULE_OK_ACTIONS),
rpc_api.WATCH_PERIOD: watch.rule.get(rpc_api.RULE_PERIOD),
rpc_api.WATCH_STATE_REASON: watch.rule.get(rpc_api.RULE_STATE_REASON),
rpc_api.WATCH_STATE_REASON_DATA:
watch.rule.get(rpc_api.RULE_STATE_REASON_DATA),
rpc_api.WATCH_STATE_UPDATED_TIME: timeutils.isotime(
watch.rule.get(rpc_api.RULE_STATE_UPDATED_TIME)),
rpc_api.WATCH_STATE_VALUE: watch.state,
rpc_api.WATCH_STATISTIC: watch.rule.get(rpc_api.RULE_STATISTIC),
rpc_api.WATCH_THRESHOLD: watch.rule.get(rpc_api.RULE_THRESHOLD),
rpc_api.WATCH_UNIT: watch.rule.get(rpc_api.RULE_UNIT),
rpc_api.WATCH_STACK_ID: watch.stack_id
}
return result
def format_watch_data(wd):
# Demangle DB format data into something more easily used in the API
# We are expecting a dict with exactly two items, Namespace and
# a metric key
namespace = wd.data['Namespace']
metric = [(k, v) for k, v in wd.data.items() if k != 'Namespace']
if len(metric) == 1:
metric_name, metric_data = metric[0]
else:
LOG.error(_LE("Unexpected number of keys in watch_data.data!"))
return
result = {
rpc_api.WATCH_DATA_ALARM: wd.watch_rule.name,
rpc_api.WATCH_DATA_METRIC: metric_name,
rpc_api.WATCH_DATA_TIME: timeutils.isotime(wd.created_at),
rpc_api.WATCH_DATA_NAMESPACE: namespace,
rpc_api.WATCH_DATA: metric_data
}
return result
def format_validate_parameter(param):
"""
Format a template parameter for validate template API call
Formats a template parameter and its schema information from the engine's
internal representation (i.e. a Parameter object and its associated
Schema object) to a representation expected by the current API (for example
to be compatible to CFN syntax).
"""
# map of Schema object types to API expected types
schema_to_api_types = {
param.schema.STRING: rpc_api.PARAM_TYPE_STRING,
param.schema.NUMBER: rpc_api.PARAM_TYPE_NUMBER,
param.schema.LIST: rpc_api.PARAM_TYPE_COMMA_DELIMITED_LIST,
param.schema.MAP: rpc_api.PARAM_TYPE_JSON,
param.schema.BOOLEAN: rpc_api.PARAM_TYPE_BOOLEAN
}
res = {
rpc_api.PARAM_TYPE: schema_to_api_types.get(param.schema.type,
param.schema.type),
rpc_api.PARAM_DESCRIPTION: param.description(),
rpc_api.PARAM_NO_ECHO: 'true' if param.hidden() else 'false',
rpc_api.PARAM_LABEL: param.label()
}
if param.has_value():
res[rpc_api.PARAM_DEFAULT] = param.value()
constraint_description = []
# build constraints
for c in param.schema.constraints:
if isinstance(c, constr.Length):
if c.min is not None:
res[rpc_api.PARAM_MIN_LENGTH] = c.min
if c.max is not None:
res[rpc_api.PARAM_MAX_LENGTH] = c.max
elif isinstance(c, constr.Range):
if c.min is not None:
res[rpc_api.PARAM_MIN_VALUE] = c.min
if c.max is not None:
res[rpc_api.PARAM_MAX_VALUE] = c.max
elif isinstance(c, constr.AllowedValues):
res[rpc_api.PARAM_ALLOWED_VALUES] = list(c.allowed)
elif isinstance(c, constr.AllowedPattern):
res[rpc_api.PARAM_ALLOWED_PATTERN] = c.pattern
elif isinstance(c, constr.CustomConstraint):
res[rpc_api.PARAM_CUSTOM_CONSTRAINT] = c.name
if c.description:
constraint_description.append(c.description)
if constraint_description:
res[rpc_api.PARAM_CONSTRAINT_DESCRIPTION] = " ".join(
constraint_description)
return res
def format_software_config(sc):
if sc is None:
return
result = {
rpc_api.SOFTWARE_CONFIG_ID: sc.id,
rpc_api.SOFTWARE_CONFIG_NAME: sc.name,
rpc_api.SOFTWARE_CONFIG_GROUP: sc.group,
rpc_api.SOFTWARE_CONFIG_CONFIG: sc.config['config'],
rpc_api.SOFTWARE_CONFIG_INPUTS: sc.config['inputs'],
rpc_api.SOFTWARE_CONFIG_OUTPUTS: sc.config['outputs'],
rpc_api.SOFTWARE_CONFIG_OPTIONS: sc.config['options'],
rpc_api.SOFTWARE_CONFIG_CREATION_TIME: timeutils.isotime(
sc.created_at),
}
return result
def format_software_deployment(sd):
if sd is None:
return
result = {
rpc_api.SOFTWARE_DEPLOYMENT_ID: sd.id,
rpc_api.SOFTWARE_DEPLOYMENT_SERVER_ID: sd.server_id,
rpc_api.SOFTWARE_DEPLOYMENT_INPUT_VALUES: sd.input_values,
rpc_api.SOFTWARE_DEPLOYMENT_OUTPUT_VALUES: sd.output_values,
rpc_api.SOFTWARE_DEPLOYMENT_ACTION: sd.action,
rpc_api.SOFTWARE_DEPLOYMENT_STATUS: sd.status,
rpc_api.SOFTWARE_DEPLOYMENT_STATUS_REASON: sd.status_reason,
rpc_api.SOFTWARE_DEPLOYMENT_CONFIG_ID: sd.config.id,
rpc_api.SOFTWARE_DEPLOYMENT_CREATION_TIME: timeutils.isotime(
sd.created_at)
}
if sd.updated_at:
result[rpc_api.SOFTWARE_DEPLOYMENT_UPDATED_TIME] = timeutils.isotime(
sd.updated_at)
return result
def format_snapshot(snapshot):
if snapshot is None:
return
result = {
rpc_api.SNAPSHOT_ID: snapshot.id,
rpc_api.SNAPSHOT_NAME: snapshot.name,
rpc_api.SNAPSHOT_STATUS: snapshot.status,
rpc_api.SNAPSHOT_STATUS_REASON: snapshot.status_reason,
rpc_api.SNAPSHOT_DATA: snapshot.data,
rpc_api.SNAPSHOT_CREATION_TIME: timeutils.isotime(
snapshot.created_at),
}
return result