Synnefo » ./kamaki

# Copyright 2012-2013 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

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# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.command

from json import load, dumps

from os import path

from logging import getLogger

from kamaki.cli import command

from kamaki.cli.command_tree import CommandTree

from kamaki.cli.utils import print_dict, print_json, filter_dicts_by_dict

from kamaki.clients.image import ImageClient

from kamaki.clients.pithos import PithosClient

from kamaki.clients.astakos import AstakosClient

from kamaki.clients import ClientError

from kamaki.cli.argument import FlagArgument, ValueArgument, KeyValueArgument

from kamaki.cli.argument import IntArgument, ProgressBarArgument

from kamaki.cli.commands.cyclades import _init_cyclades

from kamaki.cli.errors import raiseCLIError, CLIBaseUrlError

from kamaki.cli.commands import _command_init, errors, addLogSettings

from kamaki.cli.commands import _optional_output_cmd, _optional_json

image_cmds = CommandTree(

    'image',

    'Cyclades/Plankton API image commands\n'

    'image compute:\tCyclades/Compute API image commands')

_commands = [image_cmds]

howto_image_file = [

    'Kamaki commands to:',

    ' get current user id: /user authenticate',

    ' check available containers: /file list',

    ' create a new container: /file create <container>',

    ' check container contents: /file list <container>',

    ' upload files: /file upload <image file> <container>']

about_image_id = ['To see a list of available image ids: /image list']

log = getLogger(__name__)

class _init_image(_command_init):

    @errors.generic.all

    @addLogSettings

    def _run(self):

        if getattr(self, 'cloud', None):

            img_url = self._custom_url('image') or self._custom_url('plankton')

            if img_url:

                token = self._custom_token('image')\

                    or self._custom_token('plankton')\

                    or self.config.get_cloud(self.cloud, 'token')

                self.client = ImageClient(base_url=img_url, token=token)

                return

        if getattr(self, 'auth_base', False):

            plankton_endpoints = self.auth_base.get_service_endpoints(

                self._custom_type('image') or self._custom_type(

                    'plankton') or 'image',

                self._custom_version('image') or self._custom_version(

                    'plankton') or '')

            base_url = plankton_endpoints['publicURL']

            token = self.auth_base.token

        else:

            raise CLIBaseUrlError(service='plankton')

        self.client = ImageClient(base_url=base_url, token=token)

    def main(self):

        self._run()

# Plankton Image Commands

def _validate_image_meta(json_dict, return_str=False):

    """

    :param json_dict" (dict) json-formated, of the form

        {"key1": "val1", "key2": "val2", ...}

    :param return_str: (boolean) if true, return a json dump

    :returns: (dict) if return_str is not True, else return str

    :raises TypeError, AttributeError: Invalid json format

    :raises AssertionError: Valid json but invalid image properties dict

    """

    json_str = dumps(json_dict, indent=2)

    for k, v in json_dict.items():

        if k.lower() == 'properties':

            for pk, pv in v.items():

                prop_ok = not (isinstance(pv, dict) or isinstance(pv, list))

                assert prop_ok, 'Invalid property value for key %s' % pk

                key_ok = not (' ' in k or '-' in k)

                assert key_ok, 'Invalid property key %s' % k

            continue

        meta_ok = not (isinstance(v, dict) or isinstance(v, list))

        assert meta_ok, 'Invalid value for meta key %s' % k

        meta_ok = ' ' not in k

        assert meta_ok, 'Invalid meta key [%s]' % k

        json_dict[k] = '%s' % v

    return json_str if return_str else json_dict

def _load_image_meta(filepath):

    """

    :param filepath: (str) the (relative) path of the metafile

    :returns: (dict) json_formated

    :raises TypeError, AttributeError: Invalid json format

    :raises AssertionError: Valid json but invalid image properties dict

    """

    with open(path.abspath(filepath)) as f:

        meta_dict = load(f)

        try:

            return _validate_image_meta(meta_dict)

        except AssertionError:

            log.debug('Failed to load properties from file %s' % filepath)

            raise

def _validate_image_location(location):

    """

    :param location: (str) pithos://<user-id>/<container>/<image-path>

    :returns: (<user-id>, <container>, <image-path>)

    :raises AssertionError: if location is invalid

    """

    prefix = 'pithos://'

    msg = 'Invalid prefix for location %s , try: %s' % (location, prefix)

    assert location.startswith(prefix), msg

    service, sep, rest = location.partition('://')

    assert sep and rest, 'Location %s is missing user-id' % location

    uuid, sep, rest = rest.partition('/')

    assert sep and rest, 'Location %s is missing container' % location

    container, sep, img_path = rest.partition('/')

    assert sep and img_path, 'Location %s is missing image path' % location

    return uuid, container, img_path

@command(image_cmds)

class image_list(_init_image, _optional_json):

    """List images accessible by user"""

    PERMANENTS = (

        'id', 'name',

        'status', 'container_format', 'disk_format', 'size')

    arguments = dict(

        detail=FlagArgument('show detailed output', ('-l', '--details')),

        container_format=ValueArgument(

            'filter by container format',

            '--container-format'),

        disk_format=ValueArgument('filter by disk format', '--disk-format'),

        name=ValueArgument('filter by name', '--name'),

        name_pref=ValueArgument(

            'filter by name prefix (case insensitive)',

            '--name-prefix'),

        name_suff=ValueArgument(

            'filter by name suffix (case insensitive)',

            '--name-suffix'),

        name_like=ValueArgument(

            'print only if name contains this (case insensitive)',

            '--name-like'),

        size_min=IntArgument('filter by minimum size', '--size-min'),

        size_max=IntArgument('filter by maximum size', '--size-max'),

        status=ValueArgument('filter by status', '--status'),

        owner=ValueArgument('filter by owner', '--owner'),

        owner_name=ValueArgument('filter by owners username', '--owner-name'),

        order=ValueArgument(

            'order by FIELD ( - to reverse order)',

            '--order',

            default=''),

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

        more=FlagArgument(

            'output results in pages (-n to set items per page, default 10)',

            '--more'),

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

        prop=KeyValueArgument('filter by property key=value', ('--property')),

        prop_like=KeyValueArgument(

            'fliter by property key=value where value is part of actual value',

            ('--property-like')),

    )

    def _filtered_by_owner(self, images):

        ouuid = self['owner'] or self._username2uuid(self['owner_name'])

        return filter_dicts_by_dict(images, dict(owner=ouuid))

    def _filtered_by_name(self, images):

        np, ns, nl = self['name_pref'], self['name_suff'], self['name_like']

        return [img for img in images if (

            (not np) or img['name'].lower().startswith(np.lower())) and (

            (not ns) or img['name'].lower().endswith(ns.lower())) and (

            (not nl) or nl.lower() in img['name'].lower())]

    def _add_owner_name(self, images):

        uuids = self._uuids2usernames(

            list(set([img['owner'] for img in images])))

        for img in images:

            img['owner'] += ' (%s)' % uuids[img['owner']]

        return images

    def _filtered_by_properties(self, images):

        new_images = []

        # def like_properties(props):

        #     plike = self['prop_like']

        #     for k, v in plike.items():

        #         likestr = props.get(k, '').lower()

        #         if v.lower() not in likestr:

        #             return False

        #     return True

        for img in images:

            props = [dict(img['properties'])]

            if self['prop']:

                props = filter_dicts_by_dict(props, self['prop'])

            if props and self['prop_like']:

                props = filter_dicts_by_dict(

                    props, self['prop_like'], exact_match=False)

            if props:

                new_images.append(img)

            #if (

            #        self['prop'] and set(

            #            self['prop'].items()).difference(props.items())) or (

            #        self['prop_like'] and not like_properties(props)):

            #    continue

            #new_images.append(img)

        return new_images

    @errors.generic.all

    @errors.cyclades.connection

    def _run(self):

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

        filters = {}

        for arg in set([

                'container_format',

                'disk_format',

                'name',

                'size_min',

                'size_max',

                'status']).intersection(self.arguments):

            filters[arg] = self[arg]

        order = self['order']

        detail = self['detail'] or (

            self['prop'] or self['prop_like']) or (

            self['owner'] or self['owner_name'])

        images = self.client.list_public(detail, filters, order)

        if self['owner'] or self['owner_name']:

            images = self._filtered_by_owner(images)

        if self['prop'] or self['prop_like']:

            images = self._filtered_by_properties(images)

        images = self._filtered_by_name(images)

        if self['detail'] and not self['json_output']:

            images = self._add_owner_name(images)

        elif detail and not self['detail']:

            for img in images:

                for key in set(img).difference(self.PERMANENTS):

                    img.pop(key)

        kwargs = dict(with_enumeration=self['enum'])

        if self['more']:

            kwargs['page_size'] = self['limit'] or 10

        elif self['limit']:

            images = images[:self['limit']]

        self._print(images, **kwargs)

    def main(self):

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

        self._run()

@command(image_cmds)

class image_meta(_init_image, _optional_json):

    """Get image metadata

    Image metadata include:

    - image file information (location, size, etc.)

    - image information (id, name, etc.)

    - image os properties (os, fs, etc.)

    """

    @errors.generic.all

    @errors.plankton.connection

    @errors.plankton.id

    def _run(self, image_id):

        self._print([self.client.get_meta(image_id)])

    def main(self, image_id):

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

        self._run(image_id=image_id)

@command(image_cmds)

class image_register(_init_image, _optional_json):

    """(Re)Register an image"""

    container_info_cache = {}

    arguments = dict(

        checksum=ValueArgument('set image checksum', '--checksum'),

        container_format=ValueArgument(

            'set container format',

            '--container-format'),

        disk_format=ValueArgument('set disk format', '--disk-format'),

        owner=ValueArgument('set image owner (admin only)', '--owner'),

        properties=KeyValueArgument(

            'add property in key=value form (can be repeated)',

            ('-p', '--property')),

        is_public=FlagArgument('mark image as public', '--public'),

        size=IntArgument('set image size', '--size'),

        metafile=ValueArgument(

            'Load metadata from a json-formated file <img-file>.meta :'

            '{"key1": "val1", "key2": "val2", ..., "properties: {...}"}',

            ('--metafile')),

        metafile_force=FlagArgument(

            'Store remote metadata object, even if it already exists',

            ('-f', '--force')),

        no_metafile_upload=FlagArgument(

            'Do not store metadata in remote meta file',

            ('--no-metafile-upload')),

        container=ValueArgument(

            'Pithos+ container containing the image file',

            ('-C', '--container')),

        uuid=ValueArgument('Custom user uuid', '--uuid'),

        local_image_path=ValueArgument(

            'Local image file path to upload and register '

            '(still need target file in the form container:remote-path )',

            '--upload-image-file'),

        progress_bar=ProgressBarArgument(

            'Do not use progress bar', '--no-progress-bar', default=False)

    )

    def _get_user_id(self):

        atoken = self.client.token

        if getattr(self, 'auth_base', False):

            return self.auth_base.term('id', atoken)

        else:

            astakos_url = self.config.get('user', 'url')\

                or self.config.get('astakos', 'url')

            if not astakos_url:

                raise CLIBaseUrlError(service='astakos')

            user = AstakosClient(astakos_url, atoken)

            return user.term('id')

    def _get_pithos_client(self, container):

        if self['no_metafile_upload']:

            return None

        ptoken = self.client.token

        if getattr(self, 'auth_base', False):

            pithos_endpoints = self.auth_base.get_service_endpoints(

                'object-store')

            purl = pithos_endpoints['publicURL']

        else:

            purl = self.config.get_cloud('pithos', 'url')

        if not purl:

            raise CLIBaseUrlError(service='pithos')

        return PithosClient(purl, ptoken, self._get_user_id(), container)

    def _store_remote_metafile(self, pclient, remote_path, metadata):

        return pclient.upload_from_string(

            remote_path, _validate_image_meta(metadata, return_str=True),

            container_info_cache=self.container_info_cache)

    def _load_params_from_file(self, location):

        params, properties = dict(), dict()

        pfile = self['metafile']

        if pfile:

            try:

                for k, v in _load_image_meta(pfile).items():

                    key = k.lower().replace('-', '_')

                    if k == 'properties':

                        for pk, pv in v.items():

                            properties[pk.upper().replace('-', '_')] = pv

                    elif key == 'name':

                            continue

                    elif key == 'location':

                        if location:

                            continue

                        location = v

                    else:

                        params[key] = v

            except Exception as e:

                raiseCLIError(e, 'Invalid json metadata config file')

        return params, properties, location

    def _load_params_from_args(self, params, properties):

        for key in set([

                'checksum',

                'container_format',

                'disk_format',

                'owner',

                'size',

                'is_public']).intersection(self.arguments):

            params[key] = self[key]

        for k, v in self['properties'].items():

            properties[k.upper().replace('-', '_')] = v

    def _validate_location(self, location):

        if not location:

            raiseCLIError(

                'No image file location provided',

                importance=2, details=[

                    'An image location is needed. Image location format:',

                    '  pithos://<user-id>/<container>/<path>',

                    ' where an image file at the above location must exist.'

                    ] + howto_image_file)

        try:

            return _validate_image_location(location)

        except AssertionError as ae:

            raiseCLIError(

                ae, 'Invalid image location format',

                importance=1, details=[

                    'Valid image location format:',

                    '  pithos://<user-id>/<container>/<img-file-path>'

                    ] + howto_image_file)

    def _mine_location(self, container_path):

        uuid = self['uuid'] or self._get_user_id()

        if self['container']:

            return uuid, self['container'], container_path

        container, sep, path = container_path.partition(':')

        if not (bool(container) and bool(path)):

            raiseCLIError(

                'Incorrect container-path format', importance=1, details=[

                'Use : to seperate container form path',

                '  <container>:<image-path>',

                'OR',

                'Use -C to specifiy a container',

                '  -C <container> <image-path>'] + howto_image_file)

        return uuid, container, path

    @errors.generic.all

    @errors.plankton.connection

    def _run(self, name, uuid, container, img_path):

        if self['local_image_path']:

            with open(self['local_image_path']) as f:

                pithos = self._get_pithos_client(container)

                (pbar, upload_cb) = self._safe_progress_bar('Uploading')

                if pbar:

                    hash_bar = pbar.clone()

                    hash_cb = hash_bar.get_generator('Calculating hashes')

                pithos.upload_object(

                    img_path, f,

                    hash_cb=hash_cb, upload_cb=upload_cb,

                    container_info_cache=self.container_info_cache)

                pbar.finish()

        location = 'pithos://%s/%s/%s' % (uuid, container, img_path)

        (params, properties, new_loc) = self._load_params_from_file(location)

        if location != new_loc:

            uuid, container, img_path = self._validate_location(new_loc)

        self._load_params_from_args(params, properties)

        pclient = self._get_pithos_client(container)

        #check if metafile exists

        meta_path = '%s.meta' % img_path

        if pclient and not self['metafile_force']:

            try:

                pclient.get_object_info(meta_path)

                raiseCLIError(

                    'Metadata file %s:%s already exists, abort' % (

                        container, meta_path),

                    details=['Registration ABORTED', 'Try -f to overwrite'])

            except ClientError as ce:

                if ce.status != 404:

                    raise

        #register the image

        try:

            r = self.client.register(name, location, params, properties)

        except ClientError as ce:

            if ce.status in (400, ):

                raiseCLIError(

                    ce, 'Nonexistent image file location %s' % location,

                    details=[

                        'Make sure the image file exists'] + howto_image_file)

            raise

        self._print(r, print_dict)

        #upload the metadata file

        if pclient:

            try:

                meta_headers = pclient.upload_from_string(

                    meta_path, dumps(r, indent=2),

                    container_info_cache=self.container_info_cache)

            except TypeError:

                print('Failed to dump metafile %s:%s' % (container, meta_path))

                return

            if self['json_output']:

                print_json(dict(

                    metafile_location='%s:%s' % (container, meta_path),

                    headers=meta_headers))

            else:

                print('Metadata file uploaded as %s:%s (version %s)' % (

                    container, meta_path, meta_headers['x-object-version']))

    def main(self, name, container___image_path):

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

        self._run(name, *self._mine_location(container___image_path))

@command(image_cmds)

class image_unregister(_init_image, _optional_output_cmd):

    """Unregister an image (does not delete the image file)"""

    @errors.generic.all

    @errors.plankton.connection

    @errors.plankton.id

    def _run(self, image_id):

        self._optional_output(self.client.unregister(image_id))

    def main(self, image_id):

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

        self._run(image_id=image_id)

@command(image_cmds)

class image_shared(_init_image, _optional_json):

    """List images shared by a member"""

    @errors.generic.all

    @errors.plankton.connection

    def _run(self, member):

        self._print(self.client.list_shared(member), title=('image_id',))

    def main(self, member):

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

        self._run(member)

@command(image_cmds)

class image_members(_init_image):

    """Manage members. Members of an image are users who can modify it"""

@command(image_cmds)

class image_members_list(_init_image, _optional_json):

    """List members of an image"""

    @errors.generic.all

    @errors.plankton.connection

    @errors.plankton.id

    def _run(self, image_id):

        self._print(self.client.list_members(image_id), title=('member_id',))

    def main(self, image_id):

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

        self._run(image_id=image_id)

@command(image_cmds)

class image_members_add(_init_image, _optional_output_cmd):

    """Add a member to an image"""

    @errors.generic.all

    @errors.plankton.connection

    @errors.plankton.id

    def _run(self, image_id=None, member=None):

            self._optional_output(self.client.add_member(image_id, member))

    def main(self, image_id, member):

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

        self._run(image_id=image_id, member=member)

@command(image_cmds)

class image_members_delete(_init_image, _optional_output_cmd):

    """Remove a member from an image"""

    @errors.generic.all

    @errors.plankton.connection

    @errors.plankton.id

    def _run(self, image_id=None, member=None):

            self._optional_output(self.client.remove_member(image_id, member))

    def main(self, image_id, member):

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

        self._run(image_id=image_id, member=member)

@command(image_cmds)

class image_members_set(_init_image, _optional_output_cmd):

    """Set the members of an image"""

    @errors.generic.all

    @errors.plankton.connection

    @errors.plankton.id

    def _run(self, image_id, members):

            self._optional_output(self.client.set_members(image_id, members))

    def main(self, image_id, *members):

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

        self._run(image_id=image_id, members=members)

# Compute Image Commands

@command(image_cmds)

class image_compute(_init_cyclades):

    """Cyclades/Compute API image commands"""

@command(image_cmds)

class image_compute_list(_init_cyclades, _optional_json):

    """List images"""

    PERMANENTS = ('id', 'name')

    arguments = dict(

        detail=FlagArgument('show detailed output', ('-l', '--details')),

        limit=IntArgument('limit number listed images', ('-n', '--number')),

        more=FlagArgument(

            'output results in pages (-n to set items per page, default 10)',

            '--more'),

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

        meta=KeyValueArgument(

            'filter by metadata key=value (can be repeated)', ('--metadata')),

        meta_like=KeyValueArgument(

            'filter by metadata key=value (can be repeated)',

            ('--metadata-like'))

    )

    def _filter_by_metadata(self, images):

        new_images = []

        for img in images:

            meta = [dict(img['metadata'])]

            if self['meta']:

                meta = filter_dicts_by_dict(meta, self['meta'])

            if meta and self['meta_like']:

                meta = filter_dicts_by_dict(

                    meta, self['meta_like'], exact_match=False)

            if meta:

                new_images.append(img)

        return new_images

    def _add_name(self, images, key='user_id'):

        uuids = self._uuids2usernames(

            list(set([img[key] for img in images])))

        for img in images:

            img[key] += ' (%s)' % uuids[img[key]]

        return images

    @errors.generic.all

    @errors.cyclades.connection

    def _run(self):

        withmeta = bool(self['meta'] or self['meta_like'])

        detail = self['detail'] or withmeta

        images = self.client.list_images(detail)

        if withmeta:

            images = self._filter_by_metadata(images)

        if self['detail'] and not self['json_output']:

            images = self._add_name(self._add_name(images, 'tenant_id'))

        kwargs = dict(with_enumeration=self['enum'])

        if self['more']:

            kwargs['page_size'] = self['limit'] or 10

        elif self['limit']:

            images = images[:self['limit']]

        self._print(images, **kwargs)

    def main(self):

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

        self._run()

@command(image_cmds)

class image_compute_info(_init_cyclades, _optional_json):

    """Get detailed information on an image"""

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    def _run(self, image_id):

        image = self.client.get_image_details(image_id)

        self._print(image, print_dict)

    def main(self, image_id):

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

        self._run(image_id=image_id)

@command(image_cmds)

class image_compute_delete(_init_cyclades, _optional_output_cmd):

    """Delete an image (WARNING: image file is also removed)"""

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    def _run(self, image_id):

        self._optional_output(self.client.delete_image(image_id))

    def main(self, image_id):

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

        self._run(image_id=image_id)

@command(image_cmds)

class image_compute_properties(_init_cyclades):

    """Manage properties related to OS installation in an image"""

@command(image_cmds)

class image_compute_properties_list(_init_cyclades, _optional_json):

    """List all image properties"""

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    def _run(self, image_id):

        self._print(self.client.get_image_metadata(image_id), print_dict)

    def main(self, image_id):

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

        self._run(image_id=image_id)

@command(image_cmds)

class image_compute_properties_get(_init_cyclades, _optional_json):

    """Get an image property"""

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    @errors.plankton.metadata

    def _run(self, image_id, key):

        self._print(self.client.get_image_metadata(image_id, key), print_dict)

    def main(self, image_id, key):

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

        self._run(image_id=image_id, key=key)

@command(image_cmds)

class image_compute_properties_add(_init_cyclades, _optional_json):

    """Add a property to an image"""

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    @errors.plankton.metadata

    def _run(self, image_id, key, val):

        self._print(

            self.client.create_image_metadata(image_id, key, val), print_dict)

    def main(self, image_id, key, val):

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

        self._run(image_id=image_id, key=key, val=val)

@command(image_cmds)

class image_compute_properties_set(_init_cyclades, _optional_json):

    """Add / update a set of properties for an image

    proeprties must be given in the form key=value, e.v.

    /image compute properties set <image-id> key1=val1 key2=val2

    """

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    def _run(self, image_id, keyvals):

        meta = dict()

        for keyval in keyvals:

            key, val = keyval.split('=')

            meta[key] = val

        self._print(

            self.client.update_image_metadata(image_id, **meta), print_dict)

    def main(self, image_id, *key_equals_value):

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

        self._run(image_id=image_id, keyvals=key_equals_value)

@command(image_cmds)

class image_compute_properties_delete(_init_cyclades, _optional_output_cmd):

    """Delete a property from an image"""

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    @errors.plankton.metadata

    def _run(self, image_id, key):

        self._optional_output(self.client.delete_image_metadata(image_id, key))

    def main(self, image_id, key):

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

        self._run(image_id=image_id, key=key)