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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))