Synnefo » ./kamaki

# Copyright 2011-2013 GRNET S.A. All rights reserved.

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# or implied, of GRNET S.A.command

from time import localtime, strftime

from io import StringIO

from pydoc import pager

from os import path, walk, makedirs

from kamaki.clients.pithos import PithosClient, ClientError

from kamaki.cli import command

from kamaki.cli.command_tree import CommandTree

from kamaki.cli.commands import (

    _command_init, errors, addLogSettings, DontRaiseKeyError, _optional_json,

    _name_filter, _optional_output_cmd)

from kamaki.cli.errors import (

    CLIBaseUrlError, CLIError, CLIInvalidArgument, raiseCLIError,

    CLISyntaxError)

from kamaki.cli.argument import (

    FlagArgument, IntArgument, ValueArgument, DateArgument, KeyValueArgument,

    ProgressBarArgument, RepeatableArgument, DataSizeArgument)

from kamaki.cli.utils import (

    format_size, bold, get_path_size, guess_mime_type)

file_cmds = CommandTree('file', 'Pithos+/Storage object level API commands')

container_cmds = CommandTree(

    'container', 'Pithos+/Storage container level API commands')

sharer_cmds = CommandTree('sharer', 'Pithos+/Storage sharers')

group_cmds = CommandTree('group', 'Pithos+/Storage user groups')

_commands = [file_cmds, container_cmds, sharer_cmds, group_cmds]

class _pithos_init(_command_init):

    """Initilize a pithos+ client

    There is always a default account (current user uuid)

    There is always a default container (pithos)

    """

    @DontRaiseKeyError

    def _custom_container(self):

        return self.config.get_cloud(self.cloud, 'pithos_container')

    @DontRaiseKeyError

    def _custom_uuid(self):

        return self.config.get_cloud(self.cloud, 'pithos_uuid')

    def _set_account(self):

        self.account = self._custom_uuid()

        if self.account:

            return

        astakos = getattr(self, 'auth_base', None)

        if astakos:

            self.account = astakos.user_term('id', self.token)

        else:

            raise CLIBaseUrlError(service='astakos')

    @errors.generic.all

    @addLogSettings

    def _run(self):

        cloud = getattr(self, 'cloud', None)

        if cloud:

            self.base_url = self._custom_url('pithos')

        else:

            self.cloud = 'default'

        self.token = self._custom_token('pithos')

        self.container = self._custom_container() or 'pithos'

        astakos = getattr(self, 'auth_base', None)

        if astakos:

            self.token = self.token or astakos.token

            if not self.base_url:

                pithos_endpoints = astakos.get_service_endpoints(

                    self._custom_type('pithos') or 'object-store',

                    self._custom_version('pithos') or '')

                self.base_url = pithos_endpoints['publicURL']

        else:

            raise CLIBaseUrlError(service='astakos')

        self._set_account()

        self.client = PithosClient(

            self.base_url, self.token, self.account, self.container)

    def main(self):

        self._run()

class _pithos_account(_pithos_init):

    """Setup account"""

    def __init__(self, arguments={}, auth_base=None, cloud=None):

        super(_pithos_account, self).__init__(arguments, auth_base, cloud)

        self['account'] = ValueArgument(

            'Use (a different) user uuid', ('-A', '--account'))

    def print_objects(self, object_list):

        for index, obj in enumerate(object_list):

            pretty_obj = obj.copy()

            index += 1

            empty_space = ' ' * (len(str(len(object_list))) - len(str(index)))

            if 'subdir' in obj:

                continue

            if self._is_dir(obj):

                size = 'D'

            else:

                size = format_size(obj['bytes'])

                pretty_obj['bytes'] = '%s (%s)' % (obj['bytes'], size)

            oname = obj['name'] if self['more'] else bold(obj['name'])

            prfx = ('%s%s. ' % (empty_space, index)) if self['enum'] else ''

            if self['detail']:

                self.writeln('%s%s' % (prfx, oname))

                self.print_dict(pretty_obj, exclude=('name'))

                self.writeln()

            else:

                oname = '%s%9s %s' % (prfx, size, oname)

                oname += '/' if self._is_dir(obj) else u''

                self.writeln(oname)

    @staticmethod

    def _is_dir(remote_dict):

        return 'application/directory' == remote_dict.get(

            'content_type', remote_dict.get('content-type', ''))

    def _run(self):

        super(_pithos_account, self)._run()

        self.client.account = self['account'] or getattr(

            self, 'account', getattr(self.client, 'account', None))

class _pithos_container(_pithos_account):

    """Setup container"""

    def __init__(self, arguments={}, auth_base=None, cloud=None):

        super(_pithos_container, self).__init__(arguments, auth_base, cloud)

        self['container'] = ValueArgument(

            'Use this container (default: pithos)', ('-C', '--container'))

    @staticmethod

    def _resolve_pithos_url(url):

        """Match urls of one of the following formats:

        pithos://ACCOUNT/CONTAINER/OBJECT_PATH

        /CONTAINER/OBJECT_PATH

        return account, container, path

        """

        account, container, obj_path, prefix = '', '', url, 'pithos://'

        if url.startswith(prefix):

            account, sep, url = url[len(prefix):].partition('/')

            url = '/%s' % url

        if url.startswith('/'):

            container, sep, obj_path = url[1:].partition('/')

        return account, container, obj_path

    def _run(self, url=None):

        acc, con, self.path = self._resolve_pithos_url(url or '')

        #  self.account = acc or getattr(self, 'account', '')

        super(_pithos_container, self)._run()

        self.container = con or self['container'] or getattr(

            self, 'container', None) or getattr(self.client, 'container', '')

        self.client.account = acc or self.client.account

        self.client.container = self.container

@command(file_cmds)

class file_info(_pithos_container, _optional_json):

    """Get information/details about a file"""

    arguments = dict(

        object_version=ValueArgument(

            'download a file of a specific version', '--object-version'),

        hashmap=FlagArgument(

            'Get file hashmap instead of details', '--hashmap'),

        matching_etag=ValueArgument(

            'show output if ETags match', '--if-match'),

        non_matching_etag=ValueArgument(

            'show output if ETags DO NOT match', '--if-none-match'),

        modified_since_date=DateArgument(

            'show output modified since then', '--if-modified-since'),

        unmodified_since_date=DateArgument(

            'show output unmodified since then', '--if-unmodified-since'),

        sharing=FlagArgument(

            'show object permissions and sharing information', '--sharing'),

        metadata=FlagArgument('show only object metadata', '--metadata'),

        versions=FlagArgument(

            'show the list of versions for the file', '--object-versions')

    )

    def version_print(self, versions):

        return {'/%s/%s' % (self.container, self.path): [

            dict(version_id=vitem[0], created=strftime(

                '%d-%m-%Y %H:%M:%S',

                localtime(float(vitem[1])))) for vitem in versions]}

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    @errors.pithos.object_path

    def _run(self):

        if self['hashmap']:

            r = self.client.get_object_hashmap(

                self.path,

                version=self['object_version'],

                if_match=self['matching_etag'],

                if_none_match=self['non_matching_etag'],

                if_modified_since=self['modified_since_date'],

                if_unmodified_since=self['unmodified_since_date'])

        elif self['sharing']:

            r = self.client.get_object_sharing(self.path)

            r['public url'] = self.client.get_object_info(

                self.path, version=self['object_version']).get(

                    'x-object-public', None)

        elif self['metadata']:

            r, preflen = dict(), len('x-object-meta-')

            for k, v in self.client.get_object_meta(self.path).items():

                r[k[preflen:]] = v

        elif self['versions']:

            r = self.version_print(

                self.client.get_object_versionlist(self.path))

        else:

            r = self.client.get_object_info(

                self.path, version=self['object_version'])

        self._print(r, self.print_dict)

    def main(self, path_or_url):

        super(self.__class__, self)._run(path_or_url)

        self._run()

@command(file_cmds)

class file_list(_pithos_container, _optional_json, _name_filter):

    """List all objects in a container or a directory object"""

    arguments = dict(

        detail=FlagArgument('detailed output', ('-l', '--list')),

        limit=IntArgument('limit number of listed items', ('-n', '--number')),

        marker=ValueArgument('output greater that marker', '--marker'),

        delimiter=ValueArgument('show output up to delimiter', '--delimiter'),

        meta=ValueArgument(

            'show output with specified meta keys', '--meta',

            default=[]),

        if_modified_since=ValueArgument(

            'show output modified since then', '--if-modified-since'),

        if_unmodified_since=ValueArgument(

            'show output not modified since then', '--if-unmodified-since'),

        until=DateArgument('show metadata until then', '--until'),

        format=ValueArgument(

            'format to parse until data (default: d/m/Y H:M:S )', '--format'),

        shared_by_me=FlagArgument(

            'show only files shared to other users', '--shared-by-me'),

        public=FlagArgument('show only published objects', '--public'),

        more=FlagArgument('read long results', '--more'),

        enum=FlagArgument('Enumerate results', '--enumerate'),

        recursive=FlagArgument(

            'Recursively list containers and their contents',

            ('-R', '--recursive'))

    )

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    @errors.pithos.object_path

    def _run(self):

        r = self.client.container_get(

            limit=False if self['more'] else self['limit'],

            marker=self['marker'],

            prefix=self['name_pref'],

            delimiter=self['delimiter'],

            path=self.path or '',

            show_only_shared=self['shared_by_me'],

            public=self['public'],

            if_modified_since=self['if_modified_since'],

            if_unmodified_since=self['if_unmodified_since'],

            until=self['until'],

            meta=self['meta'])

        files = self._filter_by_name(r.json)

        if self['more']:

            outbu, self._out = self._out, StringIO()

        try:

            if self['json_output'] or self['output_format']:

                self._print(files)

            else:

                self.print_objects(files)

        finally:

            if self['more']:

                pager(self._out.getvalue())

                self._out = outbu

    def main(self, path_or_url=''):

        super(self.__class__, self)._run(path_or_url)

        self._run()

@command(file_cmds)

class file_modify(_pithos_container):

    """Modify the attributes of a file or directory object"""

    arguments = dict(

        publish=FlagArgument(

            'Make an object public (returns the public URL)', '--publish'),

        unpublish=FlagArgument(

            'Make an object unpublic', '--unpublish'),

        uuid_for_read_permission=RepeatableArgument(

            'Give read access to user/group (can be repeated, accumulative). '

            'Format for users: UUID . Format for groups: UUID:GROUP . '

            'Use * for all users/groups', '--read-permission'),

        uuid_for_write_permission=RepeatableArgument(

            'Give write access to user/group (can be repeated, accumulative). '

            'Format for users: UUID . Format for groups: UUID:GROUP . '

            'Use * for all users/groups', '--write-permission'),

        no_permissions=FlagArgument('Remove permissions', '--no-permissions'),

        metadata_to_set=KeyValueArgument(

            'Add metadata (KEY=VALUE) to an object (can be repeated)',

            '--metadata-add'),

        metadata_key_to_delete=RepeatableArgument(

            'Delete object metadata (can be repeated)', '--metadata-del'),

    )

    required = [

        'publish', 'unpublish', 'uuid_for_read_permission', 'metadata_to_set',

        'uuid_for_write_permission', 'no_permissions',

        'metadata_key_to_delete']

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    @errors.pithos.object_path

    def _run(self):

        if self['publish']:

            self.writeln(self.client.publish_object(self.path))

        if self['unpublish']:

            self.client.unpublish_object(self.path)

        if self['uuid_for_read_permission'] or self[

                'uuid_for_write_permission']:

            perms = self.client.get_object_sharing(self.path)

            read, write = perms.get('read', ''), perms.get('write', '')

            read = read.split(',') if read else []

            write = write.split(',') if write else []

            read += (self['uuid_for_read_permission'] or [])

            write += (self['uuid_for_write_permission'] or [])

            self.client.set_object_sharing(

                self.path, read_permission=read, write_permission=write)

            self.print_dict(self.client.get_object_sharing(self.path))

        if self['no_permissions']:

            self.client.del_object_sharing(self.path)

        metadata = self['metadata_to_set'] or dict()

        for k in (self['metadata_key_to_delete'] or []):

            metadata[k] = ''

        if metadata:

            self.client.set_object_meta(self.path, metadata)

            self.print_dict(self.client.get_object_meta(self.path))

    def main(self, path_or_url):

        super(self.__class__, self)._run(path_or_url)

        if self['publish'] and self['unpublish']:

            raise CLIInvalidArgument(

                'Arguments %s and %s cannot be used together' % (

                    self.arguments['publish'].lvalue,

                    self.arguments['publish'].lvalue))

        if self['no_permissions'] and (

                self['uuid_for_read_permission'] or self[

                    'uuid_for_write_permission']):

            raise CLIInvalidArgument(

                '%s cannot be used with other permission arguments' % (

                    self.arguments['no_permissions'].lvalue))

        self._run()

@command(file_cmds)

class file_create(_pithos_container, _optional_output_cmd):

    """Create an empty file"""

    arguments = dict(

        content_type=ValueArgument(

            'Set content type (default: application/octet-stream)',

            '--content-type',

            default='application/octet-stream')

    )

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    def _run(self):

        self._optional_output(

            self.client.create_object(self.path, self['content_type']))

    def main(self, path_or_url):

        super(self.__class__, self)._run(path_or_url)

        self._run()

@command(file_cmds)

class file_mkdir(_pithos_container, _optional_output_cmd):

    """Create a directory: /file create --content-type='applcation/directory'

    """

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    def _run(self):

        self._optional_output(self.client.create_directory(self.path))

    def main(self, path_or_url):

        super(self.__class__, self)._run(path_or_url)

        self._run()

@command(file_cmds)

class file_delete(_pithos_container):

    """Delete a file or directory object"""

    arguments = dict(

        until_date=DateArgument('remove history until then', '--until'),

        yes=FlagArgument('Do not prompt for permission', '--yes'),

        recursive=FlagArgument(

            'If a directory, empty first', ('-r', '--recursive')),

        delimiter=ValueArgument(

            'delete objects prefixed with <object><delimiter>', '--delimiter')

    )

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    @errors.pithos.object_path

    def _run(self):

        if self.path:

            if self['yes'] or self.ask_user(

                    'Delete /%s/%s ?' % (self.container, self.path)):

                self.client.del_object(

                    self.path,

                    until=self['until_date'],

                    delimiter='/' if self['recursive'] else self['delimiter'])

            else:

                self.error('Aborted')

        else:

            if self['yes'] or self.ask_user(

                    'Empty container /%s ?' % self.container):

                self.client.container_delete(self.container, delimiter='/')

            else:

                self.error('Aborted')

    def main(self, path_or_url):

        super(self.__class__, self)._run(path_or_url)

        self._run()

class _source_destination(_pithos_container, _optional_output_cmd):

    sd_arguments = dict(

        destination_user_uuid=ValueArgument(

            'default: current user uuid', '--to-account'),

        destination_container=ValueArgument(

            'default: pithos', '--to-container'),

        source_prefix=FlagArgument(

            'Transfer all files that are prefixed with SOURCE PATH If the '

            'destination path is specified, replace SOURCE_PATH with '

            'DESTINATION_PATH',

            ('-r', '--recursive')),

        force=FlagArgument(

            'Overwrite destination objects, if needed', ('-f', '--force')),

        source_version=ValueArgument(

            'The version of the source object', '--source-version')

    )

    def __init__(self, arguments={}, auth_base=None, cloud=None):

        self.arguments.update(arguments)

        self.arguments.update(self.sd_arguments)

        super(_source_destination, self).__init__(

            self.arguments, auth_base, cloud)

    def _report_transfer(self, src, dst, transfer_name):

        if not dst:

            if transfer_name in ('move', ):

                self.error('  delete source directory %s' % src)

            return

        dst_prf = '' if self.account == self.dst_client.account else (

                'pithos://%s' % self.dst_client.account)

        if src:

            src_prf = '' if self.account == self.dst_client.account else (

                    'pithos://%s' % self.account)

            self.error('  %s %s/%s/%s\n  -->  %s/%s/%s' % (

                transfer_name,

                src_prf, self.container, src,

                dst_prf, self.dst_client.container, dst))

        else:

            self.error('  mkdir %s/%s/%s' % (

                dst_prf, self.dst_client.container, dst))

    @errors.generic.all

    @errors.pithos.account

    def _src_dst(self, version=None):

        """Preconditions:

        self.account, self.container, self.path

        self.dst_acc, self.dst_con, self.dst_path

        They should all be configured properly

        :returns: [(src_path, dst_path), ...], if src_path is None, create

            destination directory

        """

        src_objects, dst_objects, pairs = dict(), dict(), []

        try:

            for obj in self.dst_client.list_objects(

                    prefix=self.dst_path or self.path or '/'):

                dst_objects[obj['name']] = obj

        except ClientError as ce:

            if ce.status in (404, ):

                raise CLIError(

                    'Destination container pithos://%s/%s not found' % (

                        self.dst_client.account, self.dst_client.container))

            raise ce

        if self['source_prefix']:

            #  Copy and replace prefixes

            for src_obj in self.client.list_objects(prefix=self.path):

                src_objects[src_obj['name']] = src_obj

            for src_path, src_obj in src_objects.items():

                dst_path = '%s%s' % (

                    self.dst_path or self.path, src_path[len(self.path):])

                dst_obj = dst_objects.get(dst_path, None)

                if self['force'] or not dst_obj:

                    #  Just do it

                    pairs.append((

                        None if self._is_dir(src_obj) else src_path, dst_path))

                    if self._is_dir(src_obj):

                        pairs.append((self.path or dst_path, None))

                elif not (self._is_dir(dst_obj) and self._is_dir(src_obj)):

                    raise CLIError(

                        'Destination object exists', importance=2, details=[

                            'Failed while transfering:',

                            '    pithos://%s/%s/%s' % (

                                    self.account,

                                    self.container,

                                    src_path),

                            '--> pithos://%s/%s/%s' % (

                                    self.dst_client.account,

                                    self.dst_client.container,

                                    dst_path),

                            'Use %s to transfer overwrite' % (

                                    self.arguments['force'].lvalue)])

        else:

            #  One object transfer

            try:

                src_version_arg = self.arguments.get('source_version', None)

                src_obj = self.client.get_object_info(

                    self.path,

                    version=src_version_arg.value if src_version_arg else None)

            except ClientError as ce:

                if ce.status in (204, ):

                    raise CLIError(

                        'Missing specific path container %s' % self.container,

                        importance=2, details=[

                            'To transfer container contents %s' % (

                                self.arguments['source_prefix'].lvalue)])

                raise

            dst_path = self.dst_path or self.path

            dst_obj = dst_objects.get(dst_path or self.path, None)

            if self['force'] or not dst_obj:

                pairs.append(

                    (None if self._is_dir(src_obj) else self.path, dst_path))

                if self._is_dir(src_obj):

                    pairs.append((self.path or dst_path, None))

            elif self._is_dir(src_obj):

                raise CLIError(

                    'Cannot transfer an application/directory object',

                    importance=2, details=[

                        'The object pithos://%s/%s/%s is a directory' % (

                            self.account,

                            self.container,

                            self.path),

                        'To recursively copy a directory, use',

                        '  %s' % self.arguments['source_prefix'].lvalue,

                        'To create a file, use',

                        '  /file create  (general purpose)',

                        '  /file mkdir   (a directory object)'])

            else:

                raise CLIError(

                    'Destination object exists',

                    importance=2, details=[

                        'Failed while transfering:',

                        '    pithos://%s/%s/%s' % (

                                self.account,

                                self.container,

                                self.path),

                        '--> pithos://%s/%s/%s' % (

                                self.dst_client.account,

                                self.dst_client.container,

                                dst_path),

                        'Use %s to transfer overwrite' % (

                                self.arguments['force'].lvalue)])

        return pairs

    def _run(self, source_path_or_url, destination_path_or_url=''):

        super(_source_destination, self)._run(source_path_or_url)

        dst_acc, dst_con, dst_path = self._resolve_pithos_url(

            destination_path_or_url)

        self.dst_client = PithosClient(

            base_url=self.client.base_url, token=self.client.token,

            container=self[

                'destination_container'] or dst_con or self.client.container,

            account=self[

                'destination_user_uuid'] or dst_acc or self.account)

        self.dst_path = dst_path or self.path

@command(file_cmds)

class file_copy(_source_destination):

    """Copy objects, even between different accounts or containers"""

    arguments = dict(

        public=ValueArgument('publish new object', '--public'),

        content_type=ValueArgument(

            'change object\'s content type', '--content-type'),

        source_version=ValueArgument(

            'The version of the source object', '--object-version')

    )

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    @errors.pithos.account

    def _run(self):

        for src, dst in self._src_dst(self['source_version']):

            self._report_transfer(src, dst, 'copy')

            if src and dst:

                self.dst_client.copy_object(

                    src_container=self.client.container,

                    src_object=src,

                    dst_container=self.dst_client.container,

                    dst_object=dst,

                    source_account=self.client.account,

                    source_version=self['source_version'],

                    public=self['public'],

                    content_type=self['content_type'])

            elif dst:

                self.dst_client.create_directory(dst)

    def main(self, source_path_or_url, destination_path_or_url=None):

        super(file_copy, self)._run(

            source_path_or_url, destination_path_or_url or '')

        self._run()

@command(file_cmds)

class file_move(_source_destination):

    """Move objects, even between different accounts or containers"""

    arguments = dict(

        public=ValueArgument('publish new object', '--public'),

        content_type=ValueArgument(

            'change object\'s content type', '--content-type')

    )

    @errors.generic.all

    @errors.pithos.connection

    @errors.pithos.container

    @errors.pithos.account

    def _run(self):

        for src, dst in self._src_dst():

            self._report_transfer(src, dst, 'move')

            if src and dst:

                self.dst_client.move_object(

                    src_container=self.client.container,

                    src_object=src,

                    dst_container=self.dst_client.container,

                    dst_object=dst,

                    source_account=self.account,

                    public=self['public'],

                    content_type=self['content_type'])

            elif dst:

                self.dst_client.create_directory(dst)

            else:

                self.client.del_object(src)

    def main(self, source_path_or_url, destination_path_or_url=None):

        super(file_move, self)._run(

            source_path_or_url, destination_path_or_url or '')

        self._run()

@command(file_cmds)

class file_append(_pithos_container, _optional_output_cmd):

    """Append local file to (existing) remote object

    The remote object should exist.