helpers.py

# Copyright 2024 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Helpers for tests"""

import logging
from typing import List

import proto

from google.protobuf import duration_pb2
from google.protobuf import timestamp_pb2
from google.protobuf.json_format import MessageToJson


class Genre(proto.Enum):
    GENRE_UNSPECIFIED = 0
    CLASSICAL = 1
    JAZZ = 2
    ROCK = 3


class Composer(proto.Message):
    given_name = proto.Field(proto.STRING, number=1)
    family_name = proto.Field(proto.STRING, number=2)
    relateds = proto.RepeatedField(proto.STRING, number=3)
    indices = proto.MapField(proto.STRING, proto.STRING, number=4)


class Song(proto.Message):
    composer = proto.Field(Composer, number=1)
    title = proto.Field(proto.STRING, number=2)
    lyrics = proto.Field(proto.STRING, number=3)
    year = proto.Field(proto.INT32, number=4)
    genre = proto.Field(Genre, number=5)
    is_five_mins_longer = proto.Field(proto.BOOL, number=6)
    score = proto.Field(proto.DOUBLE, number=7)
    likes = proto.Field(proto.INT64, number=8)
    duration = proto.Field(duration_pb2.Duration, number=9)
    date_added = proto.Field(timestamp_pb2.Timestamp, number=10)


class EchoResponse(proto.Message):
    content = proto.Field(proto.STRING, number=1)


def parse_responses(response_message_cls, all_responses: List[proto.Message]) -> bytes:
    # json.dumps returns a string surrounded with quotes that need to be stripped
    # in order to be an actual JSON.
    json_responses = [
        (
            response_message_cls.to_json(response).strip('"')
            if issubclass(response_message_cls, proto.Message)
            else MessageToJson(response).strip('"')
        )
        for response in all_responses
    ]
    logging.info(f"Sending JSON stream: {json_responses}")
    ret_val = "[{}]".format(",".join(json_responses))
    return bytes(ret_val, "utf-8")