Source code for heat.engine.api
#
# 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 import param_utils
from heat.common import template_format
from heat.common import timeutils as heat_timeutils
from heat.engine import constraints as constr
from heat.rpc import api as rpc_api
LOG = logging.getLogger(__name__)
[docs]
def extract_args(params):
"""Extract arguments passed as parameters and return them as a dictionary.
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('Timeout conversion failed')
else:
if timeout > 0:
kwargs[rpc_api.PARAM_TIMEOUT] = timeout
else:
raise ValueError(_('Invalid timeout value %s') % timeout)
for name in [rpc_api.PARAM_CONVERGE, rpc_api.PARAM_DISABLE_ROLLBACK]:
if name in params:
bool_value = param_utils.extract_bool(name, params[name])
kwargs[name] = bool_value
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
tags = params.get(rpc_api.PARAM_TAGS)
if tags is not None:
if not isinstance(tags, list):
raise ValueError(_('Invalid tags, not a list: %s') % tags)
for tag in tags:
if not isinstance(tag, str):
raise ValueError(_('Invalid tag, "%s" is not a string') % tag)
if len(tag) > 80:
raise ValueError(_('Invalid tag, "%s" is longer than 80 '
'characters') % tag)
# Comma is not allowed as per the API WG tagging guidelines
if ',' in tag:
raise ValueError(_('Invalid tag, "%s" contains a comma') % tag)
kwargs[rpc_api.PARAM_TAGS] = tags
return kwargs
def _parse_object_status(status):
"""Parse input status into action and status if possible.
This function parses a given string (or list of strings) and see if it
contains the action part. The action part is exacted if found.
:param status: A string or a list of strings where each string contains
a status to be checked.
:returns: (actions, statuses) tuple, where actions is a set of actions
extracted from the input status and statuses is a set of pure
object status.
"""
if not isinstance(status, list):
status = [status]
status_set = set()
action_set = set()
for val in status:
# Note: cannot reference Stack.STATUSES due to circular reference issue
for s in ('COMPLETE', 'FAILED', 'IN_PROGRESS'):
index = val.rfind(s)
if index != -1:
status_set.add(val[index:])
if index > 1:
action_set.add(val[:index - 1])
break
return action_set, status_set
[docs]
def translate_filters(params):
"""Translate filter names to their corresponding DB field names.
:param params: A dictionary containing keys from engine.api.STACK_KEYS
and other keys previously leaked to users.
:returns: A dict containing only valid DB filed names.
"""
key_map = {
rpc_api.STACK_NAME: 'name',
rpc_api.STACK_ACTION: 'action',
rpc_api.STACK_STATUS: 'status',
rpc_api.STACK_STATUS_DATA: 'status_reason',
rpc_api.STACK_DISABLE_ROLLBACK: 'disable_rollback',
rpc_api.STACK_TIMEOUT: 'timeout',
rpc_api.STACK_OWNER: 'username',
rpc_api.STACK_PARENT: 'owner_id',
rpc_api.STACK_USER_PROJECT_ID: 'stack_user_project_id'
}
for key, field in key_map.items():
value = params.pop(key, None)
if not value:
continue
fld_value = params.get(field, None)
if fld_value:
if not isinstance(fld_value, list):
fld_value = [fld_value]
if not isinstance(value, list):
value = [value]
value.extend(fld_value)
params[field] = value
# Deal with status which might be of form <ACTION>_<STATUS>, e.g.
# "CREATE_FAILED". Note this logic is still not ideal due to the fact
# that action and status are stored separately.
if 'status' in params:
a_set, s_set = _parse_object_status(params['status'])
statuses = sorted(s_set)
params['status'] = statuses[0] if len(statuses) == 1 else statuses
if a_set:
a = params.get('action', [])
action_set = set(a) if isinstance(a, list) else set([a])
actions = sorted(action_set.union(a_set))
params['action'] = actions[0] if len(actions) == 1 else actions
return params
[docs]
def format_stack_outputs(outputs, resolve_value=False):
"""Return a representation of the given output template.
Return a representation of the given output template for the given stack
that matches the API output expectations.
"""
return [format_stack_output(outputs[key], resolve_value=resolve_value)
for key in outputs]
[docs]
def format_stack_output(output_defn, resolve_value=True):
result = {
rpc_api.OUTPUT_KEY: output_defn.name,
rpc_api.OUTPUT_DESCRIPTION: output_defn.description(),
}
if resolve_value:
value = None
try:
value = output_defn.get_value()
except Exception as ex:
# We don't need error raising, just adding output_error to
# resulting dict.
result.update({rpc_api.OUTPUT_ERROR: str(ex)})
finally:
result.update({rpc_api.OUTPUT_VALUE: value})
return result
[docs]
def format_stack(stack, preview=False, resolve_outputs=True):
"""Return a representation of the given stack.
Return a representation of the given stack that matches the API output
expectations.
"""
updated_time = heat_timeutils.isotime(stack.updated_time)
created_time = heat_timeutils.isotime(stack.created_time or
timeutils.utcnow())
deleted_time = heat_timeutils.isotime(stack.deleted_time)
info = {
rpc_api.STACK_NAME: stack.name,
rpc_api.STACK_ID: dict(stack.identifier()),
rpc_api.STACK_CREATION_TIME: created_time,
rpc_api.STACK_UPDATED_TIME: updated_time,
rpc_api.STACK_DELETION_TIME: deleted_time,
rpc_api.STACK_NOTIFICATION_TOPICS: [], # TODO(therve) Not implemented
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,
rpc_api.STACK_TAGS: stack.tags,
}
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 (not (stack.action == stack.DELETE and stack.status == stack.COMPLETE)
and resolve_outputs):
info[rpc_api.STACK_OUTPUTS] = format_stack_outputs(stack.outputs,
resolve_value=True)
return info
[docs]
def format_stack_db_object(stack):
"""Return a summary representation of the given stack.
Given a stack versioned DB object, return a representation of the given
stack for a stack listing.
"""
updated_time = heat_timeutils.isotime(stack.updated_at)
created_time = heat_timeutils.isotime(stack.created_at)
deleted_time = heat_timeutils.isotime(stack.deleted_at)
tags = None
if stack.tags:
tags = [t.tag for t in stack.tags]
info = {
rpc_api.STACK_ID: dict(stack.identifier()),
rpc_api.STACK_NAME: stack.name,
rpc_api.STACK_DESCRIPTION: '',
rpc_api.STACK_ACTION: stack.action,
rpc_api.STACK_STATUS: stack.status,
rpc_api.STACK_STATUS_DATA: stack.status_reason,
rpc_api.STACK_CREATION_TIME: created_time,
rpc_api.STACK_UPDATED_TIME: updated_time,
rpc_api.STACK_DELETION_TIME: deleted_time,
rpc_api.STACK_OWNER: stack.username,
rpc_api.STACK_PARENT: stack.owner_id,
rpc_api.STACK_USER_PROJECT_ID: stack.stack_user_project_id,
rpc_api.STACK_TAGS: tags,
}
return info
[docs]
def format_resource_attributes(resource, with_attr=None):
resolver = resource.attributes
if not with_attr:
with_attr = []
# Always return live values for consistency
resolver.reset_resolved_values()
def resolve(attr, resolver):
try:
return resolver._resolver(attr)
except Exception:
return None
# if 'show' in attributes_schema, will resolve all attributes of resource
# including the ones are not represented in response of show API, such as
# 'console_urls' for nova server, user can view it by taking with_attr
# parameter
if 'show' in resolver:
show_attr = resolve('show', resolver)
# check if 'show' resolved to dictionary. so it's not None
if isinstance(show_attr, collections.abc.Mapping):
for a in with_attr:
if a not in show_attr:
show_attr[a] = resolve(a, resolver)
return show_attr
else:
# remove 'show' attribute if it's None or not a mapping
# then resolve all attributes manually
del resolver._attributes['show']
attributes = set(resolver) | set(with_attr)
return dict((attr, resolve(attr, resolver))
for attr in attributes)
[docs]
def format_resource_properties(resource):
def get_property(prop):
try:
return resource.properties[prop]
except (KeyError, ValueError):
LOG.exception("Error in fetching property %s of resource %s" %
(prop, resource.name))
return None
return dict((prop, get_property(prop))
for prop in resource.properties_schema.keys())
[docs]
def format_stack_resource(resource, detail=True, with_props=False,
with_attr=None):
"""Return a representation of the given resource.
Return a representation of the given resource that matches the API output
expectations.
"""
created_time = heat_timeutils.isotime(resource.created_time)
last_updated_time = heat_timeutils.isotime(
resource.updated_time or resource.created_time)
res = {
rpc_api.RES_UPDATED_TIME: last_updated_time,
rpc_api.RES_CREATION_TIME: created_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 resource.has_nested():
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()
if with_attr is not False:
res[rpc_api.RES_ATTRIBUTES] = format_resource_attributes(
resource, with_attr)
if with_props:
res[rpc_api.RES_PROPERTIES] = format_resource_properties(
resource)
return res
[docs]
def format_stack_preview(stack):
def format_resource(res):
if isinstance(res, list):
return list(map(format_resource, res))
return format_stack_resource(res, with_props=True)
fmt_stack = format_stack(stack, preview=True)
fmt_resources = list(map(format_resource, stack.preview_resources()))
fmt_stack['resources'] = fmt_resources
return fmt_stack
[docs]
def format_event(event, stack_identifier, root_stack_identifier=None,
include_rsrc_prop_data=True):
result = {
rpc_api.EVENT_ID: dict(event.identifier(stack_identifier)),
rpc_api.EVENT_STACK_ID: dict(stack_identifier),
rpc_api.EVENT_STACK_NAME: stack_identifier.stack_name,
rpc_api.EVENT_TIMESTAMP: heat_timeutils.isotime(event.created_at),
rpc_api.EVENT_RES_NAME: event.resource_name,
rpc_api.EVENT_RES_PHYSICAL_ID: event.physical_resource_id,
rpc_api.EVENT_RES_ACTION: event.resource_action,
rpc_api.EVENT_RES_STATUS: event.resource_status,
rpc_api.EVENT_RES_STATUS_DATA: event.resource_status_reason,
rpc_api.EVENT_RES_TYPE: event.resource_type,
}
if root_stack_identifier:
result[rpc_api.EVENT_ROOT_STACK_ID] = dict(root_stack_identifier)
if include_rsrc_prop_data:
result[rpc_api.EVENT_RES_PROPERTIES] = event.resource_properties
return result
[docs]
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'
updated_at = heat_timeutils.isotime(stack.updated_time)
result = {
rpc_api.NOTIFY_TENANT_ID: stack.context.project_id,
rpc_api.NOTIFY_USER_ID: stack.context.username,
# deprecated: please use rpc_api.NOTIFY_USERID for user id or
# rpc_api.NOTIFY_USERNAME for user name.
rpc_api.NOTIFY_USERID: stack.context.user_id,
rpc_api.NOTIFY_USERNAME: stack.context.username,
rpc_api.NOTIFY_STACK_ID: stack.id,
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: heat_timeutils.isotime(stack.created_time),
rpc_api.NOTIFY_TAGS: stack.tags,
rpc_api.NOTIFY_UPDATE_AT: updated_at
}
if stack.t is not None:
result[rpc_api.NOTIFY_DESCRIPTION] = stack.t[stack.t.DESCRIPTION]
return result
[docs]
def format_watch(watch):
updated_time = heat_timeutils.isotime(watch.updated_at or
timeutils.utcnow())
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: updated_time,
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: heat_timeutils.isotime(
watch.rule.get(rpc_api.RULE_STATE_UPDATED_TIME,
timeutils.utcnow())),
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
[docs]
def format_watch_data(wd, rule_names):
# 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("Unexpected number of keys in watch_data.data!")
return
result = {
rpc_api.WATCH_DATA_ALARM: rule_names.get(wd.watch_rule_id),
rpc_api.WATCH_DATA_METRIC: metric_name,
rpc_api.WATCH_DATA_TIME: heat_timeutils.isotime(wd.created_at),
rpc_api.WATCH_DATA_NAMESPACE: namespace,
rpc_api.WATCH_DATA: metric_data
}
return result
[docs]
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_default():
res[rpc_api.PARAM_DEFAULT] = param.default()
if param.user_value:
res[rpc_api.PARAM_VALUE] = param.user_value
if param.tags():
res[rpc_api.PARAM_TAG] = param.tags()
_build_parameter_constraints(res, param)
return res
def _build_parameter_constraints(res, param):
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.Modulo):
if c.step is not None:
res[rpc_api.PARAM_STEP] = c.step
if c.offset is not None:
res[rpc_api.PARAM_OFFSET] = c.offset
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)
[docs]
def format_software_config(sc, detail=True, include_project=False):
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_CREATION_TIME:
heat_timeutils.isotime(sc.created_at)
}
if detail:
result[rpc_api.SOFTWARE_CONFIG_CONFIG] = sc.config['config']
result[rpc_api.SOFTWARE_CONFIG_INPUTS] = sc.config['inputs']
result[rpc_api.SOFTWARE_CONFIG_OUTPUTS] = sc.config['outputs']
result[rpc_api.SOFTWARE_CONFIG_OPTIONS] = sc.config['options']
if include_project:
result[rpc_api.SOFTWARE_CONFIG_PROJECT] = sc.tenant
return result
[docs]
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:
heat_timeutils.isotime(sd.created_at),
}
if sd.updated_at:
result[rpc_api.SOFTWARE_DEPLOYMENT_UPDATED_TIME] = (
heat_timeutils.isotime(sd.updated_at))
return result
[docs]
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:
heat_timeutils.isotime(snapshot.created_at),
}
return result
