| # -*- coding: utf-8 -*- |
| # Copyright 2011 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 Unix-like mv command for cloud storage providers.""" |
| |
| from __future__ import absolute_import |
| |
| from gslib.command import Command |
| from gslib.command_argument import CommandArgument |
| from gslib.commands.cp import CP_SUB_ARGS |
| from gslib.cs_api_map import ApiSelector |
| from gslib.exception import CommandException |
| from gslib.storage_url import StorageUrlFromString |
| from gslib.util import NO_MAX |
| |
| |
| _SYNOPSIS = """ |
| gsutil mv [-p] src_url dst_url |
| gsutil mv [-p] src_url... dst_url |
| gsutil mv [-p] -I dst_url |
| """ |
| |
| _DETAILED_HELP_TEXT = (""" |
| <B>SYNOPSIS</B> |
| """ + _SYNOPSIS + """ |
| |
| |
| <B>DESCRIPTION</B> |
| The gsutil mv command allows you to move data between your local file |
| system and the cloud, move data within the cloud, and move data between |
| cloud storage providers. For example, to move all objects from a |
| bucket to a local directory you could use: |
| |
| gsutil mv gs://my_bucket dir |
| |
| Similarly, to move all objects from a local directory to a bucket you could |
| use: |
| |
| gsutil mv ./dir gs://my_bucket |
| |
| |
| <B>RENAMING BUCKET SUBDIRECTORIES</B> |
| You can use the gsutil mv command to rename subdirectories. For example, |
| the command: |
| |
| gsutil mv gs://my_bucket/olddir gs://my_bucket/newdir |
| |
| would rename all objects and subdirectories under gs://my_bucket/olddir to be |
| under gs://my_bucket/newdir, otherwise preserving the subdirectory structure. |
| |
| If you do a rename as specified above and you want to preserve ACLs, you |
| should use the -p option (see OPTIONS). |
| |
| Note that when using mv to rename bucket subdirectories you cannot specify |
| the source URL using wildcards. You need to spell out the complete name: |
| |
| gsutil mv gs://my_bucket/olddir gs://my_bucket/newdir |
| |
| If you have a large number of files to move you might want to use the |
| gsutil -m option, to perform a multi-threaded/multi-processing move: |
| |
| gsutil -m mv gs://my_bucket/olddir gs://my_bucket/newdir |
| |
| |
| <B>NON-ATOMIC OPERATION</B> |
| Unlike the case with many file systems, the gsutil mv command does not |
| perform a single atomic operation. Rather, it performs a copy from source |
| to destination followed by removing the source for each object. |
| |
| |
| <B>CHARGES FOR MOVING NEARLINE OBJECTS</B> |
| If you move a Nearline storage class object, deletion and data retrieval |
| charges apply, because gsutil actually copies the original object and deletes |
| the original. See the `documentation |
| <https://cloud.google.com/storage/pricing>`_ for pricing details. |
| |
| |
| <B>OPTIONS</B> |
| All options that are available for the gsutil cp command are also available |
| for the gsutil mv command (except for the -R flag, which is implied by the |
| gsutil mv command). Please see the OPTIONS sections of "gsutil help cp" |
| for more information. |
| |
| """) |
| |
| |
| class MvCommand(Command): |
| """Implementation of gsutil mv command. |
| |
| Note that there is no atomic rename operation - this command is simply |
| a shorthand for 'cp' followed by 'rm'. |
| """ |
| |
| # Command specification. See base class for documentation. |
| command_spec = Command.CreateCommandSpec( |
| 'mv', |
| command_name_aliases=['move', 'ren', 'rename'], |
| usage_synopsis=_SYNOPSIS, |
| min_args=1, |
| max_args=NO_MAX, |
| # Flags for mv are passed through to cp. |
| supported_sub_args=CP_SUB_ARGS, |
| file_url_ok=True, |
| provider_url_ok=False, |
| urls_start_arg=0, |
| gs_api_support=[ApiSelector.XML, ApiSelector.JSON], |
| gs_default_api=ApiSelector.JSON, |
| argparse_arguments=[ |
| CommandArgument.MakeZeroOrMoreCloudOrFileURLsArgument() |
| ] |
| ) |
| # Help specification. See help_provider.py for documentation. |
| help_spec = Command.HelpSpec( |
| help_name='mv', |
| help_name_aliases=['move', 'rename'], |
| help_type='command_help', |
| help_one_line_summary='Move/rename objects and/or subdirectories', |
| help_text=_DETAILED_HELP_TEXT, |
| subcommand_help_text={}, |
| ) |
| |
| def RunCommand(self): |
| """Command entry point for the mv command.""" |
| # Check each source arg up, refusing to delete a bucket src URL (force users |
| # to explicitly do that as a separate operation). |
| for arg_to_check in self.args[0:-1]: |
| url = StorageUrlFromString(arg_to_check) |
| if url.IsCloudUrl() and (url.IsBucket() or url.IsProvider()): |
| raise CommandException('You cannot move a source bucket using the mv ' |
| 'command. If you meant to move\nall objects in ' |
| 'the bucket, you can use a command like:\n' |
| '\tgsutil mv %s/* %s' % |
| (arg_to_check, self.args[-1])) |
| |
| # Insert command-line opts in front of args so they'll be picked up by cp |
| # and rm commands (e.g., for -p option). Use undocumented (internal |
| # use-only) cp -M option, which causes each original object to be deleted |
| # after successfully copying to its destination, and also causes naming |
| # behavior consistent with Unix mv naming behavior (see comments in |
| # ConstructDstUrl). |
| unparsed_args = ['-M'] |
| if self.recursion_requested: |
| unparsed_args.append('-R') |
| unparsed_args.extend(self.unparsed_args) |
| self.command_runner.RunNamedCommand( |
| 'cp', args=unparsed_args, headers=self.headers, debug=self.debug, |
| trace_token=self.trace_token, |
| parallel_operations=self.parallel_operations) |
| |
| return 0 |