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lifecycle.py
# -*- coding: utf-8 -*- # Copyright 2013 Google Inc. 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. """Implementation of lifecycle configuration command for GCS buckets.""" from __future__ import absolute_import from __future__ import print_function from __future__ import division from __future__ import unicode_literals import sys from gslib import metrics from gslib.command import Command from gslib.command_argument import CommandArgument from gslib.cs_api_map import ApiSelector from gslib.exception import CommandException from gslib.exception import NO_URLS_MATCHED_TARGET from gslib.help_provider import CreateHelpText from gslib.storage_url import UrlsAreForSingleProvider from gslib.third_party.storage_apitools import storage_v1_messages as apitools_messages from gslib.utils.constants import NO_MAX from gslib.utils.shim_util import GcloudStorageMap from gslib.utils.translation_helper import LifecycleTranslation _GET_SYNOPSIS = """ gsutil lifecycle get gs://<bucket_name> """ _SET_SYNOPSIS = """ gsutil lifecycle set <config-json-file> gs://<bucket_name>... """ _SYNOPSIS = _GET_SYNOPSIS + _SET_SYNOPSIS.lstrip('\n') + '\n' _GET_DESCRIPTION = """ <B>GET</B> Gets the lifecycle management configuration for a given bucket. You can get the lifecycle management configuration for only one bucket at a time. To update the configuration, you can redirect the output of the ``get`` command into a file, edit the file, and then set it on the bucket using the ``set`` sub-command. """ _SET_DESCRIPTION = """ <B>SET</B> Sets the lifecycle management configuration on one or more buckets. The ``config-json-file`` specified on the command line should be a path to a local file containing the lifecycle configuration JSON document. """ _DESCRIPTION = """ You can use the ``lifecycle`` command to get or set lifecycle management policies for a given bucket. This command is supported for buckets only, not objects. For more information, see `Object Lifecycle Management <https://cloud.google.com/storage/docs/lifecycle>`_. The ``lifecycle`` command has two sub-commands: """ + _GET_DESCRIPTION + _SET_DESCRIPTION + """ <B>EXAMPLES</B> The following lifecycle management configuration JSON document specifies that all objects in this bucket that are more than 365 days old are deleted automatically: { "rule": [ { "action": {"type": "Delete"}, "condition": {"age": 365} } ] } The following empty lifecycle management configuration JSON document removes all lifecycle configuration for a bucket: {} """ _DETAILED_HELP_TEXT = CreateHelpText(_SYNOPSIS, _DESCRIPTION) _get_help_text = CreateHelpText(_GET_SYNOPSIS, _GET_DESCRIPTION) _set_help_text = CreateHelpText(_SET_SYNOPSIS, _SET_DESCRIPTION) class LifecycleCommand(Command): """Implementation of gsutil lifecycle command.""" # Command specification. See base class for documentation. command_spec = Command.CreateCommandSpec( 'lifecycle', command_name_aliases=['lifecycleconfig'], usage_synopsis=_SYNOPSIS, min_args=2, max_args=NO_MAX, supported_sub_args='', file_url_ok=True, provider_url_ok=False, urls_start_arg=1, gs_api_support=[ ApiSelector.JSON, ApiSelector.XML, ], gs_default_api=ApiSelector.JSON, argparse_arguments={ 'set': [ CommandArgument.MakeNFileURLsArgument(1), CommandArgument.MakeZeroOrMoreCloudBucketURLsArgument(), ], 'get': [CommandArgument.MakeNCloudBucketURLsArgument(1),] }) # Help specification. See help_provider.py for documentation. help_spec = Command.HelpSpec( help_name='lifecycle', help_name_aliases=[ 'getlifecycle', 'setlifecycle', ], help_type='command_help', help_one_line_summary=('Get or set lifecycle configuration for a bucket'), help_text=_DETAILED_HELP_TEXT, subcommand_help_text={ 'get': _get_help_text, 'set': _set_help_text, }, ) def get_gcloud_storage_args(self): if self.args[0] == 'set': gcloud_storage_map = GcloudStorageMap( gcloud_command={ 'set': GcloudStorageMap( gcloud_command=[ 'storage', 'buckets', 'update', '--lifecycle-file={}'.format(self.args[1]), ] + self.args[2:], # Adds target bucket URLs. flag_map={}, ), }, flag_map={}, ) # Don't trigger unneeded translation now that complete command is above. self.args = self.args[:1] else: gcloud_storage_map = GcloudStorageMap( gcloud_command={ 'get': GcloudStorageMap( gcloud_command=[ 'storage', 'buckets', 'describe', '--format=gsutiljson[key=lifecycle_config,empty=\' ' 'has no lifecycle configuration.\',empty_prefix_key=' 'storage_url]' ], flag_map={}, ), }, flag_map={}, ) return super().get_gcloud_storage_args(gcloud_storage_map) def _SetLifecycleConfig(self): """Sets lifecycle configuration for a Google Cloud Storage bucket.""" lifecycle_arg = self.args[0] url_args = self.args[1:] # Disallow multi-provider 'lifecycle set' requests. if not UrlsAreForSingleProvider(url_args): raise CommandException('"%s" command spanning providers not allowed.' % self.command_name) # Open, read and parse file containing JSON document. lifecycle_file = open(lifecycle_arg, 'r') lifecycle_txt = lifecycle_file.read() lifecycle_file.close() # Iterate over URLs, expanding wildcards and setting the lifecycle on each. some_matched = False for url_str in url_args: bucket_iter = self.GetBucketUrlIterFromArg(url_str, bucket_fields=['lifecycle']) for blr in bucket_iter: url = blr.storage_url some_matched = True self.logger.info('Setting lifecycle configuration on %s...', blr) if url.scheme == 's3': self.gsutil_api.XmlPassThroughSetLifecycle(lifecycle_txt, url, provider=url.scheme) else: lifecycle = LifecycleTranslation.JsonLifecycleToMessage(lifecycle_txt) bucket_metadata = apitools_messages.Bucket(lifecycle=lifecycle) self.gsutil_api.PatchBucket(url.bucket_name, bucket_metadata, provider=url.scheme, fields=['id']) if not some_matched: raise CommandException(NO_URLS_MATCHED_TARGET % list(url_args)) return 0 def _GetLifecycleConfig(self): """Gets lifecycle configuration for a Google Cloud Storage bucket.""" bucket_url, bucket_metadata = self.GetSingleBucketUrlFromArg( self.args[0], bucket_fields=['lifecycle']) if bucket_url.scheme == 's3': sys.stdout.write( self.gsutil_api.XmlPassThroughGetLifecycle( bucket_url, provider=bucket_url.scheme)) else: if bucket_metadata.lifecycle and bucket_metadata.lifecycle.rule: sys.stdout.write( LifecycleTranslation.JsonLifecycleFromMessage( bucket_metadata.lifecycle)) else: sys.stdout.write('%s has no lifecycle configuration.\n' % bucket_url) return 0 def RunCommand(self): """Command entry point for the lifecycle command.""" subcommand = self.args.pop(0) if subcommand == 'get': metrics.LogCommandParams(subcommands=[subcommand]) return self._GetLifecycleConfig() elif subcommand == 'set': metrics.LogCommandParams(subcommands=[subcommand]) return self._SetLifecycleConfig() else: raise CommandException('Invalid subcommand "%s" for the %s command.' % (subcommand, self.command_name))
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