Synnefo » ./kamaki

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

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from kamaki.clients import Client, ClientError

from kamaki.clients.utils import path4url

def _format_image_headers(headers):

    reply = dict(properties=dict())

    meta_prefix = 'x-image-meta-'

    property_prefix = 'x-image-meta-property-'

    for key, val in headers.items():

        key = key.lower()

        if key.startswith(property_prefix):

            key = key[len(property_prefix):].upper().replace('-', '_')

            reply['properties'][key] = val

        elif key.startswith(meta_prefix):

            key = key[len(meta_prefix):]

            reply[key] = val

    return reply

class ImageClient(Client):

    """Synnefo Plankton API client"""

    def __init__(self, base_url, token):

        super(ImageClient, self).__init__(base_url, token)

    def list_public(self, detail=False, filters={}, order=''):

        """

        :param detail: (bool)

        :param filters: (dict) request filters

        :param order: (str) order listing by field (default is ascending, - for

            descending)

        :returns: (list) id,name + full image info if detail

        """

        path = path4url('images', 'detail') if detail else (

            path4url('images') + '/')

        async_params = {}

        if isinstance(filters, dict):

            for key, value in filters.items():

                if value:

                    async_params[key] = value

        if order.startswith('-'):

            async_params['sort_dir'] = 'desc'

            order = order[1:]

        else:

            async_params['sort_dir'] = 'asc'

        if order:

            async_params['sort_key'] = order

        r = self.get(path, async_params=async_params, success=200)

        return r.json

    def get_meta(self, image_id):

        """

        :param image_id: (string)

        :returns: (list) image metadata (key:val)

        """

        path = path4url('images', image_id)

        r = self.head(path, success=200)

        return _format_image_headers(r.headers)

    def register(self, name, location, params={}, properties={}):

        """Register an image that is uploaded at location

        :param name: (str)

        :param location: (str) pithos://<account>/<container>/<path>

        :param params: (dict) image metadata (X-Image-Meta) can be id, store,

            disc_format, container_format, size, checksum, is_public, owner

        :param properties: (dict) image properties (X-Image-Meta-Property)

        :returns: (dict) metadata of the created image

        """

        path = path4url('images') + '/'

        self.set_header('X-Image-Meta-Name', name)

        self.set_header('X-Image-Meta-Location', location)

        async_headers = {}

        for key, val in params.items():

            if key in ('store', 'disk_format', 'container_format',

                       'size', 'checksum', 'is_public', 'owner') and val:

                key = 'x-image-meta-' + key.replace('_', '-')

                async_headers[key] = val

        for key, val in properties.items():

            async_headers['x-image-meta-property-%s' % key] = val

        r = self.post(path, success=200, async_headers=async_headers)

        return _format_image_headers(r.headers)

    def unregister(self, image_id):

        """Unregister an image

        :param image_id: (str)

        :returns: (dict) response headers

        """

        path = path4url('images', image_id)

        r = self.delete(path, success=204)

        return r.headers

    def list_members(self, image_id):

        """

        :param image_id: (str)

        :returns: (list) users who can use current user's images

        """

        path = path4url('images', image_id, 'members')

        r = self.get(path, success=200)

        return r.json['members']

    def list_shared(self, member):

        """

        :param member: (str) sharers account

        :returns: (list) images shared by member

        """

        path = path4url('shared-images', member)

        #self.set_param('format', 'json')

        r = self.get(path, success=200)

        return r.json['shared_images']

    def add_member(self, image_id, member):

        """

        :param image_id: (str)

        :param member: (str) user to allow access to current user's images

        """

        path = path4url('images', image_id, 'members', member)

        self.set_header('Content-Length', len(member))

        r = self.put(path, success=204)

        return r.headers

    def remove_member(self, image_id, member):

        """

        :param image_id: (str)

        :param member: (str) user to deprive from current user's images

        """

        path = path4url('images', image_id, 'members', member)

        r = self.delete(path, success=204)

        return r.headers

    def set_members(self, image_id, members):

        """

        :param image_id: (str)

        :param members: (list) user to deprive from current user's images

        """

        path = path4url('images', image_id, 'members')

        req = {'memberships': [{'member_id': member} for member in members]}

        r = self.put(path, json=req, success=204)

        return r.headers