Python client.head_object函数代码示例

    def handleCopy(self, destPath, depthInfinity):
        dst = '/'.join(destPath.split('/')[2:])

        try:
            client.head_object(self.storage_url,
                               self.auth_token,
                               self.container,
                               dst,
                               http_conn=self.http_connection)
        except client.ClientException:
            pass

        headers = {'X-Copy-From': self.path}
        try:
            client.put_object(self.storage_url,
                              self.auth_token,
                              self.container,
                              dst,
                              headers=headers,
                              http_conn=self.http_connection)
            if self.environ.get("HTTP_OVERWRITE", '') != "T":
                raise DAVError(HTTP_CREATED)
            return True
        except client.ClientException:
            return False

def get_status(request, container, object_name):
    """Download an object from Swift
    :param container: container of swift where object is stored
    :param object_name: ID of object
    :return: object bytestream
    """
    try:
        if not request.session.get('storage_url') and not request.session.get('auth_token'):
            return Response('Please Contact your administrator', status=status.HTTP_401_UNAUTHORIZED)
        storage_url, auth_token = _get_auth_data(request.session)
        obj = {object_name: {}}
        # TODO: Currently using swift as first option, switch to in-memory
        headers = client.head_object(storage_url, auth_token, container, object_name)
        vid_format = 'mp4'
        id_header = 'x-object-meta-' + vid_format + '-id'
        if id_header in headers:
            video_headers = client.head_object(storage_url, auth_token, container, headers[id_header])
            obj[object_name][vid_format + 'status'] = video_headers['x-object-meta-status'] if 'x-object-meta-status' in video_headers else 0
        else:
            print "DOESN'T EXIST"
            # print video_keys
            obj[object_name]['status'] = 'DONE'
            return Response(obj, status=status.HTTP_200_OK)
        return Response(obj)
        # if object_name in video_keys:
        #     keys = video_keys[object_name]
        #     obj = {object_name: keys}
        #     print obj
        #     return Response(obj)
    except swift_exception.ClientException as e:
        print e
        return Response('Please Contact Your Administrator', status=status.HTTP_500_INTERNAL_SERVER_ERROR)
    except Exception as e:
        print e
        return Response(e.message, status=status.HTTP_500_INTERNAL_SERVER_ERROR)

    def getMember(self, objectname):
        """Get member for this ObjectCollection.

        Checks if requested name is a subdir (see above)
        """

        if self.prefix and self.prefix not in objectname:
            objectname = self.prefix + objectname
        if self.is_subdir(objectname):
            return ObjectCollection(self.container, self.environ,
                                    prefix=objectname)
        if self.environ.get('REQUEST_METHOD') in ['PUT']:
            return ObjectResource(self.container, objectname,
                                  self.environ, self.objects)
        try:
            client.head_object(self.storage_url,
                               self.auth_token,
                               self.container,
                               objectname,
                               http_conn=self.http_connection)
            return ObjectResource(self.container, objectname,
                                  self.environ, self.objects)
        except client.ClientException:
            pass
        return None

    def createCollection(self, name):
        """Create a pseudo-folder."""
        if self.path:
            tmp = self.path.split('/')
            name = '/'.join(tmp[2:]) + '/' + name
        name = name.strip('/')
        try:
            client.head_object(self.storage_url,
                               self.auth_token,
                               self.container,
                               name,
                               http_conn=self.http_connection)
            raise dav_error.DAVError(dav_error.HTTP_METHOD_NOT_ALLOWED)
        except client.ClientException:
            pass

        try:
            client.head_object(self.storage_url,
                               self.auth_token,
                               self.container,
                               name + '/',
                               http_conn=self.http_connection)
            raise dav_error.DAVError(dav_error.HTTP_METHOD_NOT_ALLOWED)
        except client.ClientException:
            pass

        client.put_object(self.storage_url,
                          self.auth_token,
                          self.container,
                          sanitize(name).rstrip('/') + '/',
                          content_type='application/directory',
                          http_conn=self.http_connection)

 def exists(self, name):
     """
     Returns True if a file referenced by the given name already exists in
     the storage system, or False if the name is available for a new file.
     """
     try:
         (host, port, path, is_ssl) = self.connection.connection_args
         storage_url = 'https://%s:%d/%s' % (host, port, path)
         head_object(storage_url, self.connection.token, self.container_name,
             name)
         return True
     except ClientException:
         return False

    def test_async_update_after_PUT(self):
        cpart, cnodes = self.container_ring.get_nodes(self.account, 'c1')
        client.put_container(self.url, self.token, 'c1',
                             headers={'X-Storage-Policy':
                                      self.policy.name})

        # put an object while one container server is stopped so that we force
        # an async update to it
        kill_server((cnodes[0]['ip'], cnodes[0]['port']), self.ipport2server)
        content = u'stuff'
        client.put_object(self.url, self.token, 'c1', 'o1', contents=content)
        meta = client.head_object(self.url, self.token, 'c1', 'o1')

        # re-start the container server and assert that it does not yet know
        # about the object
        start_server((cnodes[0]['ip'], cnodes[0]['port']), self.ipport2server)
        self.assertFalse(direct_client.direct_get_container(
            cnodes[0], cpart, self.account, 'c1')[1])

        # Run the object-updaters to be sure updates are done
        Manager(['object-updater']).once()

        # check the re-started container server has update with override values
        obj = direct_client.direct_get_container(
            cnodes[0], cpart, self.account, 'c1')[1][0]
        self.assertEqual(meta['etag'], obj['hash'])
        self.assertEqual(len(content), obj['bytes'])

def get_all(request, container):
    """ Returns List of all Objects present in specified container
    :param container: Name of Swift Container
    :return: meta data and id's of all the objects
    """
    try:
        response_dict = dict()
        storage_url, auth_token = _get_auth_data(request.session)
        data_container = client.get_container(storage_url, auth_token, container)
        for obj in data_container[1]:
            meta_object = client.head_object(storage_url, auth_token, container, obj['name'])
            if not meta_object['x-object-meta-deleted']:
                if meta_object['x-object-meta-type'] in ['thumbnail', 'original-thumbnail']:
                    if meta_object['x-object-meta-format'] not in response_dict:
                        form = meta_object['x-object-meta-format']
                        response_dict[form] = []
                    if meta_object['x-object-meta-format'] in response_dict:
                        new_obj = {'thumbnail_id': obj['name'],
                                   'name': meta_object['x-object-meta-name'],
                                   'type': meta_object['x-object-meta-type'],
                                   'resolution': meta_object['x-object-meta-resolution']}
                        if meta_object['x-object-meta-format'] is 'thumbnail':
                            new_obj['original_id'] = meta_object['x-object-meta-original']
                        response_dict[form].append(new_obj)
        return Response(response_dict)
    except swift_exception.ClientException as e:
        print e
        return Response('Please contact your admininstrator', status=status.HTTP_500_INTERNAL_SERVER_ERROR)
    except Exception as e:
        print e
        return Response('Please contact your admininstrator', status=status.HTTP_500_INTERNAL_SERVER_ERROR)

    def _check_node(self, node, part, etag, headers_post):
        # get fragment archive etag
        fragment_archive_etag = self.direct_get(node, part)

        # remove the .durable from the selected node
        part_dir = self.storage_dir('object', node, part=part)
        for dirs, subdirs, files in os.walk(part_dir):
            for fname in files:
                if fname.endswith('.durable'):
                    durable = os.path.join(dirs, fname)
                    os.remove(durable)
                    break
        try:
            os.remove(os.path.join(part_dir, 'hashes.pkl'))
        except OSError as e:
            if e.errno != errno.ENOENT:
                raise

        # fire up reconstructor to propogate the .durable
        self.reconstructor.once()

        # fragment is still exactly as it was before!
        self.assertEqual(fragment_archive_etag,
                         self.direct_get(node, part))

        # check meta
        meta = client.head_object(self.url, self.token,
                                  self.container_name,
                                  self.object_name)
        for key in headers_post:
            self.assertTrue(key in meta)
            self.assertEqual(meta[key], headers_post[key])

    def _test_sync(self, object_post_as_copy):
        source_container, dest_container = self._setup_synced_containers()

        # upload to source
        object_name = 'object-%s' % uuid.uuid4()
        put_headers = {'X-Object-Meta-Test': 'put_value'}
        client.put_object(self.url, self.token, source_container, object_name,
                          'test-body', headers=put_headers)

        # cycle container-sync
        Manager(['container-sync']).once()

        resp_headers, body = client.get_object(self.url, self.token,
                                               dest_container, object_name)
        self.assertEqual(body, 'test-body')
        self.assertIn('x-object-meta-test', resp_headers)
        self.assertEqual('put_value', resp_headers['x-object-meta-test'])

        # update metadata with a POST, using an internal client so we can
        # vary the object_post_as_copy setting - first use post-as-copy
        post_headers = {'Content-Type': 'image/jpeg',
                        'X-Object-Meta-Test': 'post_value'}
        int_client = self.make_internal_client(
            object_post_as_copy=object_post_as_copy)
        int_client.set_object_metadata(self.account, source_container,
                                       object_name, post_headers)
        # sanity checks...
        resp_headers = client.head_object(
            self.url, self.token, source_container, object_name)
        self.assertIn('x-object-meta-test', resp_headers)
        self.assertEqual('post_value', resp_headers['x-object-meta-test'])
        self.assertEqual('image/jpeg', resp_headers['content-type'])

        # cycle container-sync
        Manager(['container-sync']).once()

        # verify that metadata changes were sync'd
        resp_headers, body = client.get_object(self.url, self.token,
                                               dest_container, object_name)
        self.assertEqual(body, 'test-body')
        self.assertIn('x-object-meta-test', resp_headers)
        self.assertEqual('post_value', resp_headers['x-object-meta-test'])
        self.assertEqual('image/jpeg', resp_headers['content-type'])

        # delete the object
        client.delete_object(
            self.url, self.token, source_container, object_name)
        with self.assertRaises(ClientException) as cm:
            client.get_object(
                self.url, self.token, source_container, object_name)
        self.assertEqual(404, cm.exception.http_status)  # sanity check

        # cycle container-sync
        Manager(['container-sync']).once()

        # verify delete has been sync'd
        with self.assertRaises(ClientException) as cm:
            client.get_object(
                self.url, self.token, dest_container, object_name)
        self.assertEqual(404, cm.exception.http_status)  # sanity check

    def _check_node(self, node, part, etag, headers_post):
        # get fragment archive etag
        fragment_archive_etag = self.direct_get(node, part)

        # remove data from the selected node
        part_dir = self.storage_dir('object', node, part=part)
        shutil.rmtree(part_dir, True)

        # this node can't servce the data any more
        try:
            self.direct_get(node, part)
        except direct_client.DirectClientException as err:
            self.assertEqual(err.http_status, 404)
        else:
            self.fail('Node data on %r was not fully destoryed!' %
                      (node,))

        # make sure we can still GET the object and its correct, the
        # proxy is doing decode on remaining fragments to get the obj
        self.assertEqual(etag, self.proxy_get())

        # fire up reconstructor
        self.reconstructor.once()

        # fragment is rebuilt exactly as it was before!
        self.assertEqual(fragment_archive_etag,
                         self.direct_get(node, part))

        # check meta
        meta = client.head_object(self.url, self.token,
                                  self.container_name,
                                  self.object_name)
        for key in headers_post:
            self.assertTrue(key in meta)
            self.assertEqual(meta[key], headers_post[key])

    def get_headers(self):
        """Execute HEAD object request.

        Since this info is used in different methods (see below),
        do it once and then use this info.
        """

        if self.headers is None:
            data = self.objects.get(self.objectname)
            if data:
                self.headers = {'content-length': data.get('bytes'),
                                'etag': data.get('hash'),
                                'last_modified': data.get('last_modified'),
                                }
            else:
                try:
                    self.headers = client.head_object(
                        self.storage_url,
                        self.auth_token,
                        self.container,
                        self.objectname,
                        http_conn=self.http_connection)
                except client.ClientException:
                    self.headers = {}
                    pass

 def read_temp_url(url, token, container, object):
     head = swift_client.head_object(url=url, token=token, container=container, name=object)
     print head
     try:
         print  head['x-object-meta-tempurl']
         return head['x-object-meta-tempurl'], head['x-object-meta-tempurlexp']
     except KeyError:
         return False, False

    def test_put_ctype_replicated_when_subsequent_post(self):
        # primary half                     handoff half
        # ------------                     ------------
        # t0.data: ctype = foo
        #                                  t1.data: ctype = bar
        # t2.meta:
        #
        #              ...run replicator and expect...
        #
        #               t1.data: ctype = bar
        #               t2.meta:
        self.brain.put_container()

        # incomplete write
        self.brain.stop_handoff_half()
        self.container_brain.stop_handoff_half()
        self._put_object(headers={'Content-Type': 'foo'})
        self.brain.start_handoff_half()
        self.container_brain.start_handoff_half()

        # handoff write
        self.brain.stop_primary_half()
        self.container_brain.stop_primary_half()
        self._put_object(headers={'Content-Type': 'bar'})
        self.brain.start_primary_half()
        self.container_brain.start_primary_half()

        # metadata update with newest data unavailable
        self.brain.stop_handoff_half()
        self.container_brain.stop_handoff_half()
        self._post_object(headers={'X-Object-Meta-Color': 'Blue'})
        self.brain.start_handoff_half()
        self.container_brain.start_handoff_half()

        self.get_to_final_state()

        # check object metadata
        metadata = client.head_object(self.url, self.token,
                                      self.container_name,
                                      self.object_name)

        # check container listing metadata
        container_metadata, objs = client.get_container(self.url, self.token,
                                                        self.container_name)

        for obj in objs:
            if obj['name'] == self.object_name:
                break
        else:
            self.fail('obj not found in container listing')
        expected = 'bar'
        self.assertEqual(obj['content_type'], expected)
        self.assertEqual(metadata['x-object-meta-color'], 'Blue')
        self._assert_object_metadata_matches_listing(obj, metadata)
        self._assert_consistent_container_dbs()
        self._assert_consistent_object_metadata()
        self._assert_consistent_suffix_hashes()

def _set_headers(storage_url, auth_token, container, object_name, deleted, request):
    try:
        try:
            header = client.head_object(storage_url, auth_token, container, object_name)
        except swift_exception.ClientException as e:
            storage_url, auth_token = _reauthorize(request)
            header = client.head_object(storage_url, auth_token, container, object_name)

        new_header = {'X-Object-Meta-Deleted': deleted,
                      'X-Object-Meta-Format': header['x-object-meta-format'],
                      'X-Object-Meta-Resolution': header['x-object-meta-resolution'],
                      'X-Object-Meta-Name': header['x-object-meta-name'],
                      'X-Object-Meta-Type': header['x-object-meta-type']
                      }
        copy_of = None
        if (header['x-object-meta-format'] in video_types) and (header['x-object-meta-type'] == 'original'):
            new_header['X-Object-Meta-Mp4-Id'] = header['x-object-meta-mp4-id']

        if 'x-object-meta-status' in header:
            new_header['X-Object-Meta-Status'] = header['x-object-meta-status']

        if header['x-object-meta-type'] == 'thumbnail':
            new_header['X-Object-Meta-Original'] = header['x-object-meta-original']
            copy_of = header['x-object-meta-original']
        if header['x-object-meta-type'] == 'original':
            new_header['X-Object-Meta-Thumb'] = header['x-object-meta-thumb']
            if container == 'Video':
                copy_of = [header['x-object-meta-thumb'], header['x-object-meta-mp4-id']]
            else:
                copy_of = header['x-object-meta-thumb']
            if 'x-object-meta-preview-id' in header:
                new_header['X-Object-Meta-Preview-Id'] = header['x-object-meta-preview-id']
                copy_of = [header['x-object-meta-thumb'], header['x-object-meta-preview-id']]
        try:
            client.post_object(storage_url, auth_token, container, object_name, headers=new_header)
        except swift_exception.ClientException as e:
            storage_url, auth_token = _reauthorize(request)
            client.post_object(storage_url, auth_token, container, object_name, headers=new_header)
        return copy_of
    except swift_exception.ClientException as e:
        raise e
    except Exception as e:
        raise e

    def test_post_ctype_replicated_when_previous_incomplete_puts(self):
        # primary half                     handoff half
        # ------------                     ------------
        # t0.data: ctype = foo
        #                                  t1.data: ctype = bar
        # t2.meta: ctype = baz
        #
        #              ...run replicator and expect...
        #
        #               t1.data:
        #               t2.meta: ctype = baz
        self.brain.put_container()

        # incomplete write to primary half
        self.brain.stop_handoff_half()
        self.container_brain.stop_handoff_half()
        self._put_object(headers={'Content-Type': 'foo'})
        self.brain.start_handoff_half()
        self.container_brain.start_handoff_half()

        # handoff write
        self.brain.stop_primary_half()
        self.container_brain.stop_primary_half()
        self._put_object(headers={'Content-Type': 'bar'})
        self.brain.start_primary_half()
        self.container_brain.start_primary_half()

        # content-type update to primary half
        self.brain.stop_handoff_half()
        self.container_brain.stop_handoff_half()
        self._post_object(headers={'Content-Type': 'baz'})
        self.brain.start_handoff_half()
        self.container_brain.start_handoff_half()

        self.get_to_final_state()

        # check object metadata
        metadata = client.head_object(self.url, self.token,
                                      self.container_name,
                                      self.object_name)

        # check container listing metadata
        container_metadata, objs = client.get_container(self.url, self.token,
                                                        self.container_name)

        for obj in objs:
            if obj['name'] == self.object_name:
                break
        expected = 'baz'
        self.assertEqual(obj['content_type'], expected)
        self._assert_object_metadata_matches_listing(obj, metadata)
        self._assert_consistent_container_dbs()
        self._assert_consistent_object_metadata()
        self._assert_consistent_suffix_hashes()