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Diffstat (limited to 'mod/onboardingapi/dcae_cli/util/undeploy.py')
| -rw-r--r-- | mod/onboardingapi/dcae_cli/util/undeploy.py | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/mod/onboardingapi/dcae_cli/util/undeploy.py b/mod/onboardingapi/dcae_cli/util/undeploy.py new file mode 100644 index 0000000..1ce4d76 --- /dev/null +++ b/mod/onboardingapi/dcae_cli/util/undeploy.py @@ -0,0 +1,111 @@ +# ============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)) |