kytos-ng / mef_eline

        evc.sync()

        return jsonify("Operation successful"), 201

    @rest("v2/evc/metadata/<key>", methods=["DELETE"])

    @validate(spec)

    def bulk_delete_metadata(self, data, key):

        """Delete metada from a bulk of EVCs"""

        circuit_ids = data.pop("circuit_ids", None)

        if circuit_ids is None:

            raise BadRequest("The key 'circuit_ids' is missing.")

        self.mongo_controller.update_evcs(circuit_ids, {key: ""}, "del")

        fail_evcs = []

        for _id in circuit_ids:

            try:

                evc = self.circuits[_id]

                evc.remove_metadata(key)

            except KeyError:

                fail_evcs.append(_id)

        if fail_evcs:

            return jsonify(fail_evcs), 404

        return jsonify("Operation successful"), 200

    @rest("v2/evc/<circuit_id>/metadata/<key>", methods=["DELETE"])

    def delete_metadata(self, circuit_id, key):

        except KeyError as error:

            raise NotFound(f"circuit_id {circuit_id} not found.") from error

    @rest("v2/evc/metadata", methods=["POST"])

    @validate(spec)

    def bulk_add_metadata(self, data):

        """Add metadata to a bulk of EVCs."""

        circuit_ids = data.pop("circuit_ids", None)

        if circuit_ids is None:

            raise BadRequest("The key 'circuit_ids' is missing.")

        self.mongo_controller.update_evcs(circuit_ids, data, "add")

        fail_evcs = []

        for _id in circuit_ids:

            try:

                evc = self.circuits[_id]

                evc.extend_metadata(data)

            except KeyError:

                fail_evcs.append(_id)

        if fail_evcs:

            return jsonify(fail_evcs), 404

        return jsonify("Operation successful"), 201

    @rest("v2/evc/<circuit_id>/metadata", methods=["POST"])

    def add_metadata(self, circuit_id):