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# -*- coding: utf-8 -*-
# Copyright 2021 Google LLC 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.
"""This module provides the autoclass command to gsutil."""
from __future__ import absolute_import
from __future__ import print_function
import textwrap
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 import text_util
from gslib.utils.constants import NO_MAX
from gslib.utils.shim_util import GcloudStorageMap
from gslib.utils import shim_util
_SET_SYNOPSIS = """
gsutil autoclass set (on|off) gs://<bucket_name>...
"""
_GET_SYNOPSIS = """
gsutil autoclass get gs://<bucket_name>...
"""
_SYNOPSIS = _SET_SYNOPSIS + _GET_SYNOPSIS.lstrip('\n')
_SET_DESCRIPTION = """
<B>SET</B>
The ``set`` sub-command requires an additional sub-command, either ``on``
or ``off``, which enables or disables Autoclass for the specified
bucket(s).
"""
_GET_DESCRIPTION = """
<B>GET</B>
The ``get`` sub-command gets the current Autoclass configuration for a
bucket. The returned configuration has the following fields:
``enabled``: a boolean field indicating whether the feature is on or off.
``toggleTime``: a timestamp indicating when the enabled field was set.
"""
_DESCRIPTION = """
The `Autoclass <https://cloud.google.com/storage/docs/autoclass>`_
feature automatically selects the best storage class for objects based
on access patterns. This command has two sub-commands, ``get`` and
``set``.
""" + _GET_DESCRIPTION + _SET_DESCRIPTION
_DETAILED_HELP_TEXT = CreateHelpText(_SYNOPSIS, _DESCRIPTION)
_set_help_text = CreateHelpText(_SET_SYNOPSIS, _SET_DESCRIPTION)
_get_help_text = CreateHelpText(_GET_SYNOPSIS, _GET_DESCRIPTION)
_GCLOUD_FORMAT_STRING = ('--format=value[separator="' +
shim_util.get_format_flag_newline() + '"](' +
'format("gs://{}:", name),' +
' format(" Enabled: {}",' +
'autoclass.enabled.yesno(True, False)),' +
' format(" Toggle Time: {}",' +
'autoclass.toggleTime))')
class AutoclassCommand(Command):
"""Implements the gsutil autoclass command."""
command_spec = Command.CreateCommandSpec(
'autoclass',
command_name_aliases=[],
usage_synopsis=_SYNOPSIS,
min_args=2,
max_args=NO_MAX,
supported_sub_args='',
file_url_ok=False,
provider_url_ok=False,
urls_start_arg=2,
gs_api_support=[ApiSelector.JSON],
gs_default_api=ApiSelector.JSON,
argparse_arguments={
'get': [CommandArgument.MakeNCloudURLsArgument(1),],
'set': [
CommandArgument('mode', choices=['on', 'off']),
CommandArgument.MakeZeroOrMoreCloudBucketURLsArgument()
],
})
# Help specification. See help_provider.py for documentation.
help_spec = Command.HelpSpec(
help_name='autoclass',
help_name_aliases=[],
help_type='command_help',
help_one_line_summary='Configure Autoclass feature',
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', 'list', _GCLOUD_FORMAT_STRING,
'--raw'
],
flag_map={},
supports_output_translation=True,
),
'set':
GcloudStorageMap(
gcloud_command={
'on':
GcloudStorageMap(
gcloud_command=[
'storage',
'buckets',
'update',
'--enable-autoclass',
],
flag_map={},
),
'off':
GcloudStorageMap(
gcloud_command=[
'storage',
'buckets',
'update',
'--no-enable-autoclass',
],
flag_map={},
),
},
flag_map={},
)
},
flag_map={},
)
def _get_autoclass(self, blr):
"""Gets the autoclass setting for a bucket."""
bucket_url = blr.storage_url
bucket_metadata = self.gsutil_api.GetBucket(bucket_url.bucket_name,
fields=['autoclass'],
provider=bucket_url.scheme)
bucket = str(bucket_url).rstrip('/')
if bucket_metadata.autoclass:
enabled = getattr(bucket_metadata.autoclass, 'enabled', False)
toggle_time = getattr(bucket_metadata.autoclass, 'toggleTime', None)
else:
enabled = False
toggle_time = None
print('{}:\n'
' Enabled: {}\n'
' Toggle Time: {}'.format(bucket, enabled, toggle_time))
def _set_autoclass(self, blr, setting_arg):
"""Turns autoclass on or off for a bucket."""
bucket_url = blr.storage_url
autoclass_config = apitools_messages.Bucket.AutoclassValue()
autoclass_config.enabled = (setting_arg == 'on')
bucket_metadata = apitools_messages.Bucket(autoclass=autoclass_config)
print('Setting Autoclass %s for %s' %
(setting_arg, str(bucket_url).rstrip('/')))
self.gsutil_api.PatchBucket(bucket_url.bucket_name,
bucket_metadata,
fields=['autoclass'],
provider=bucket_url.scheme)
return 0
def _autoclass(self):
"""Handles autoclass command on Cloud Storage buckets."""
subcommand = self.args.pop(0)
if subcommand not in ('get', 'set'):
raise CommandException('autoclass only supports get|set')
subcommand_func = None
subcommand_args = []
setting_arg = None
if subcommand == 'get':
subcommand_func = self._get_autoclass
elif subcommand == 'set':
subcommand_func = self._set_autoclass
setting_arg = self.args.pop(0)
text_util.InsistOnOrOff(setting_arg,
'Only on and off values allowed for set option')
subcommand_args.append(setting_arg)
if self.gsutil_api.GetApiSelector('gs') != ApiSelector.JSON:
raise CommandException('\n'.join(
textwrap.wrap(('The "%s" command can only be with the Cloud Storage '
'JSON API.') % self.command_name)))
# Iterate over bucket args, performing the specified subsubcommand.
some_matched = False
url_args = self.args
if not url_args:
self.RaiseWrongNumberOfArgumentsException()
for url_str in url_args:
# Throws a CommandException if the argument is not a bucket.
bucket_iter = self.GetBucketUrlIterFromArg(url_str)
for bucket_listing_ref in bucket_iter:
if self.gsutil_api.GetApiSelector(
bucket_listing_ref.storage_url.scheme) != ApiSelector.JSON:
raise CommandException('\n'.join(
textwrap.wrap(('The "%s" command can only be used for GCS '
'Buckets.') % self.command_name)))
some_matched = True
subcommand_func(bucket_listing_ref, *subcommand_args)
if not some_matched:
raise CommandException(NO_URLS_MATCHED_TARGET % list(url_args))
return 0
def RunCommand(self):
"""Command entry point for the autoclass command."""
action_subcommand = self.args[0]
self.ParseSubOpts(check_args=True)
if action_subcommand == 'get' or action_subcommand == 'set':
metrics.LogCommandParams(sub_opts=self.sub_opts)
metrics.LogCommandParams(subcommands=[action_subcommand])
return self._autoclass()
else:
raise CommandException('Invalid subcommand "%s", use get|set instead.' %
action_subcommand)