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# ============LICENSE_START=======================================================
# org.onap.dcae
# ================================================================================
# Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
# ================================================================================
# 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.
# ============LICENSE_END=========================================================
#
# ECOMP is a trademark and service mark of AT&T Intellectual Property.
# -*- coding: utf-8 -*-
"""
Provides utilities for undeploying components
"""
from functools import partial
from dcae_cli.util.exc import DcaeException
import dcae_cli.util.profiles as profiles
from dcae_cli.util.cdap_util import undeploy_component as undeploy_cdap_component
from dcae_cli.util.discovery import get_healthy_instances, get_defective_instances, \
remove_config
from dcae_cli.util import docker_util as du
from dcae_cli.util.logger import get_logger
log = get_logger('Undeploy')
def _handler(undeploy_funcs, instances):
"""Handles the undeployment
Executes all undeployment functions for all instances and gathers up the
results. No short circuiting.
Args
----
undeploy_funcs: List of functions that have the following signature `fn: string->boolean`
the input is a fully qualified instance name and the return is True upon
success and False for failures
instances: List of fully qualified instance names
Returns
-------
(failures, results) where each are a list of tuples. Each tuple has the
structure: `(<instance name>, result of func 1, result of func 2, ..)`.
"""
if not instances:
return [], []
# Invoke all undeploy funcs for all instances
def invoke_undeploys(instance):
return tuple([ undeploy_func(instance) for undeploy_func in undeploy_funcs ])
results = [ (instance, ) + invoke_undeploys(instance) for instance in instances ]
# Determine failures
filter_failures_func = partial(filter, lambda result: not all(result[1:]))
failures = list(filter_failures_func(results))
return failures, results
def _handler_report(failures, results):
"""Reports the result of handling"""
if len(failures) > 0:
failed_names = [ result[0] for result in failures ]
log.warn("Could not completely undeploy: {0}".format(", ".join(failed_names)))
# This message captures a case where you are seeing a false negative. If
# you attempted to undeploy a component instance and it partially failed
# the first time but "succeeded" the second time, the second undeploy
# would get reported as a failure. The second undeploy would probably
# also be partial undeploy because the undeploy operation that succeeded
# the first time will fail the second time.
log.warn("NOTE: This could be expected since we are attempting to undeploy a component in a bad partial state")
elif len(results) == 0:
log.warn("No components found to undeploy")
else:
# This seems like important info so set it to warning so that it shows up
log.warn("Undeployed components: {0}".format(len(results)))
def undeploy_component(user, cname, cver, catalog):
'''Undeploys a component based on the component type'''
cname, cver = catalog.verify_component(cname, cver)
ctype = catalog.get_component_type(cname, cver)
profile = profiles.get_profile()
# Get *all* instances of the component whether running healthy or in a bad partial
# deployed state
instances = get_healthy_instances(user, cname, cver) + get_defective_instances(user, cname, cver)
if ctype == 'docker':
client = du.get_docker_client(profile)
image = catalog.get_docker_image(cname, cver)
undeploy_func = partial(du.undeploy_component, client, image)
elif ctype == 'cdap':
undeploy_func = partial(undeploy_cdap_component, profile)
else:
raise DcaeException("Unsupported component type for undeploy")
log.warn("Undeploying components: {0}".format(len(instances)))
_handler_report(*_handler([undeploy_func, remove_config], instances))
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