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web.py
# -*- coding: utf-8 -*- # Copyright 2012 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 website configuration command for buckets.""" from __future__ import absolute_import from __future__ import print_function from __future__ import division from __future__ import unicode_literals import sys from apitools.base.py import encoding 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.third_party.storage_apitools import storage_v1_messages as apitools_messages from gslib.utils.constants import NO_MAX from gslib.utils.shim_util import GcloudStorageFlag from gslib.utils.shim_util import GcloudStorageMap _SET_SYNOPSIS = """ gsutil web set [-m <main_page_suffix>] [-e <error_page>] gs://<bucket_name>... """ _GET_SYNOPSIS = """ gsutil web get gs://<bucket_name> """ _SYNOPSIS = _SET_SYNOPSIS + _GET_SYNOPSIS.lstrip('\n') _SET_DESCRIPTION = """ <B>SET</B> The ``gsutil web set`` command allows you to configure or disable the website configuration on your buckets. The ``set`` sub-command has the following options (omit both options to unset the configuration): <B>SET OPTIONS</B> -m <index.html> Specifies the object name to serve when a bucket listing is requested via a custom domain. -e <404.html> Specifies the error page to serve when a request is made for a non-existent object via a custom domain """ _GET_DESCRIPTION = """ <B>GET</B> The ``gsutil web get`` command retrieves the web semantics configuration for a bucket and displays a JSON representation of the configuration. In Google Cloud Storage, this would look like the following: { "notFoundPage": "404.html", "mainPageSuffix": "index.html" } """ _DESCRIPTION = """ Cloud Storage allows you to configure a bucket to behave like a static website when the bucket is accessed through a `custom domain <https://cloud.google.com/storage/docs/request-endpoints#custom-domains>`_. For example, if you set a ``main_page_suffix``, a subsequent GET bucket request through a custom domain serves the specified "main" page instead of performing the usual bucket listing. Similarly, if you set an ``error_page``, a subsequent GET object request through a custom domain for a non-existent object serves the specified error page instead of the standard Cloud Storage error. Requests to a bucket through other `endpoints <https://cloud.google.com/storage/docs/request-endpoints>`_ are unaffected by the bucket's website configuration. See `Static website examples and tips <https://cloud.google.com/storage/docs/static-website>`_ for additional examples and information. Notes: 1. Because the main page is only served when a bucket listing request is made via a custom domain endpoint, you can continue to use ``gsutil ls`` as you normally would for bucket listing. 2. The main_page_suffix applies to each subdirectory of the bucket. For example, with the main_page_suffix configured to be index.html, a GET request for ``http://www.example.com`` retrieves ``http://www.example.com/index.html`` but shows ``http://www.example.com`` as the URL to the requester, and a GET request for ``http://www.example.com/photos`` retrieves ``http://www.example.com/photos/index.html`` but shows ``http://www.example.com/photos`` as the URL to the requester. 3. There is just one 404.html page. For example, a GET request for ``http://www.example.com/photos/missing`` retrieves ``http://www.example.com/404.html``, not ``http://www.example.com/photos/404.html``. The web command has two sub-commands: """ + _SET_DESCRIPTION + _GET_DESCRIPTION _DETAILED_HELP_TEXT = CreateHelpText(_SYNOPSIS, _DESCRIPTION) _get_help_text = CreateHelpText(_GET_SYNOPSIS, _GET_DESCRIPTION) _set_help_text = CreateHelpText(_SET_SYNOPSIS, _SET_DESCRIPTION) class WebCommand(Command): """Implementation of gsutil web command.""" # Command specification. See base class for documentation. command_spec = Command.CreateCommandSpec( 'web', command_name_aliases=['setwebcfg', 'getwebcfg'], usage_synopsis=_SYNOPSIS, min_args=2, max_args=NO_MAX, supported_sub_args='m:e:', file_url_ok=False, provider_url_ok=False, urls_start_arg=1, gs_api_support=[ApiSelector.XML, ApiSelector.JSON], gs_default_api=ApiSelector.JSON, argparse_arguments={ 'set': [CommandArgument.MakeZeroOrMoreCloudBucketURLsArgument()], 'get': [CommandArgument.MakeNCloudBucketURLsArgument(1)], }, ) # Help specification. See help_provider.py for documentation. help_spec = Command.HelpSpec( help_name='web', help_name_aliases=['getwebcfg', 'setwebcfg'], help_type='command_help', help_one_line_summary=('Set a website configuration for a bucket'), help_text=_DETAILED_HELP_TEXT, subcommand_help_text={ 'get': _get_help_text, 'set': _set_help_text, }, ) gcloud_storage_map = GcloudStorageMap( gcloud_command={ 'get': GcloudStorageMap( gcloud_command=[ 'storage', 'buckets', 'describe', '--format=gsutiljson[key=website_config,empty=\' has ' 'no website configuration.\',empty_prefix_key=' 'storage_url]' ], flag_map={}, supports_output_translation=True, ), # "set" subcommand handled in get_gcloud_storage_args. }, flag_map={}, ) def get_gcloud_storage_args(self): if self.args[0] == 'set': set_command_map = GcloudStorageMap( gcloud_command={ 'set': GcloudStorageMap( gcloud_command=[ 'storage', 'buckets', 'update', ], flag_map={ '-e': GcloudStorageFlag('--web-error-page'), '-m': GcloudStorageFlag('--web-main-page-suffix'), }) }, flag_map={}, ) if not ('-e' in self.args or '-m' in self.args): set_command_map.gcloud_command['set'].gcloud_command += [ '--clear-web-error-page', '--clear-web-main-page-suffix' ] gcloud_storage_map = set_command_map else: gcloud_storage_map = WebCommand.gcloud_storage_map return super().get_gcloud_storage_args(gcloud_storage_map) def _GetWeb(self): """Gets website configuration for a bucket.""" bucket_url, bucket_metadata = self.GetSingleBucketUrlFromArg( self.args[0], bucket_fields=['website']) if bucket_url.scheme == 's3': sys.stdout.write( self.gsutil_api.XmlPassThroughGetWebsite(bucket_url, provider=bucket_url.scheme)) else: if bucket_metadata.website and (bucket_metadata.website.mainPageSuffix or bucket_metadata.website.notFoundPage): sys.stdout.write( str(encoding.MessageToJson(bucket_metadata.website)) + '\n') else: sys.stdout.write('%s has no website configuration.\n' % bucket_url) return 0 def _SetWeb(self): """Sets website configuration for a bucket.""" main_page_suffix = None error_page = None if self.sub_opts: for o, a in self.sub_opts: if o == '-m': main_page_suffix = a elif o == '-e': error_page = a url_args = self.args website = apitools_messages.Bucket.WebsiteValue( mainPageSuffix=main_page_suffix, notFoundPage=error_page) # Iterate over URLs, expanding wildcards and setting the website # configuration on each. some_matched = False for url_str in url_args: bucket_iter = self.GetBucketUrlIterFromArg(url_str, bucket_fields=['id']) for blr in bucket_iter: url = blr.storage_url some_matched = True self.logger.info('Setting website configuration on %s...', blr) bucket_metadata = apitools_messages.Bucket(website=website) 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 RunCommand(self): """Command entry point for the web command.""" action_subcommand = self.args.pop(0) self.ParseSubOpts(check_args=True) if action_subcommand == 'get': func = self._GetWeb elif action_subcommand == 'set': func = self._SetWeb else: raise CommandException( ('Invalid subcommand "%s" for the %s command.\n' 'See "gsutil help web".') % (action_subcommand, self.command_name)) # Commands with both suboptions and subcommands need to reparse for # suboptions, so we log again. metrics.LogCommandParams(subcommands=[action_subcommand], sub_opts=self.sub_opts) return func()
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