# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# 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.
"""
Usage:
    Host a trained paddle model with one line command
    Example:
        python -m paddle_serving_server.web_serve --model ./serving_server_model --port 9292
"""
import argparse
from multiprocessing import Pool, Process
from plugin_service import PluginService

def parse_args():
    parser = argparse.ArgumentParser("web_serve")
    parser.add_argument("--thread", type=int, default=10, help="Concurrency of server")
    parser.add_argument("--model", type=str, default="", help="Model for serving")
    parser.add_argument("--port", type=int, default=9292, help="Port the server")
    parser.add_argument("--workdir", type=str, default="workdir", help="Working dir of current service")
    parser.add_argument("--device", type=str, default="cpu", help="Type of device")
    parser.add_argument("--name", type=str, default="default", help="Default service name")
    return parser.parse_args()

def start_web_service(args):
    model = args.model
    port = args.port
    name = args.name
    web_service = PluginService(name=name, model=model, port=port)
    web_service.start_service()

def start_standard_model(args):
    thread_num = args.thread
    model = args.model
    port = args.port
    workdir = args.workdir
    device = args.device

    if model == "":
        print("You must specify your serving model")
        exit(-1)

    import paddle_serving_server as serving
    op_maker = serving.OpMaker()
    read_op = op_maker.create('general_reader')
    general_infer_op = op_maker.create('general_infer')
    general_response_op = op_maker.create('general_response')

    op_seq_maker = serving.OpSeqMaker()
    op_seq_maker.add_op(read_op)
    op_seq_maker.add_op(general_infer_op)
    op_seq_maker.add_op(general_response_op)

    server = serving.Server()
    server.set_op_sequence(op_seq_maker.get_op_sequence())
    server.set_num_threads(thread_num)

    server.load_model_config(model)
    server.prepare_server(workdir=workdir, port=port + 1, device=device)
    server.run_server()

if __name__ == "__main__":
    args = parse_args()
    p_serving = Process(target=start_standard_model, args=(args,))
    p_web_service = Process(target=start_web_service, args=(args,))
    p_serving.start()
    p_web_service.start()
    p_web_service.join()
    p_serving.join()