# Copyright (c) 2021 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.

import os
import sys
import shlex
import unittest
from paddle.fluid.tests.unittests.distributed_passes.dist_pass_test_base import (  # noqa: F401
    prepare_python_path_and_return_module, remove_path_if_exists)


class PsPassTestBase(unittest.TestCase):

    def init(self):
        self.config = {}
        self.config['ps_mode_config'] = ""
        self.config['worker_num'] = "1"
        self.config['server_num'] = "1"
        self.config['run_minimize'] = "0"
        self.config['run_single_pass'] = "0"
        self.config['run_the_one_ps'] = '0'
        self.config['debug_new_minimize'] = "0"
        self.config['debug_new_pass'] = "0"
        self.config['debug_the_one_ps'] = '0'
        self.config['log_dir'] = ""
        self.config['applied_pass_name'] = ""

    def setUp(self):
        print('Ps setUp...')

    def tearDown(self):
        print('Ps tearDown...')

    def ps_launch(self, ps_mode="cpu-ps"):
        if ps_mode == "cpu-ps" or ps_mode == 'heter-ps':
            os.environ['WITH_DISTRIBUTE'] = 'ON'

            cmd = [
                sys.executable,
                "-u",
            ] + [
                "-m", "launch", "--log_dir", self.config['log_dir'],
                "--worker_num", self.config['worker_num'], "--server_num",
                self.config['server_num']
            ]
            if ps_mode == 'heter-ps':
                os.environ['FLAGS_START_PORT'] = '12004'
                cmd += [
                    '--heter_worker_num', self.config['heter_worker_num'],
                    '--heter_devices', self.config['heter_devices']
                ]

            cmd += [
                "../ps/ps_dnn_trainer.py", "-m", self.config['ps_mode_config'],
                "--run_minimize", self.config['run_minimize'],
                "--run_single_pass", self.config['run_single_pass'],
                "--run_the_one_ps", self.config['run_the_one_ps'],
                "--debug_new_pass", self.config['debug_new_pass'],
                "--debug_new_minimize", self.config['debug_new_minimize'],
                "--applied_pass_name", self.config['applied_pass_name'],
                "--debug_the_one_ps", self.config['debug_the_one_ps']
            ]
        elif ps_mode == "gpu-ps":
            os.environ['FLAGS_LAUNCH_BARRIER'] = '0'
            os.environ['PADDLE_PSERVER_NUMS'] = '1'
            os.environ['PADDLE_TRAINERS_NUM'] = '1'
            os.environ['POD_IP'] = '127.0.0.1'
            os.environ['PADDLE_PSERVERS_IP_PORT_LIST'] = '127.0.0.1:29011'
            os.environ['PADDLE_PORT'] = '29011'
            os.environ['FLAGS_selected_gpus'] = '0,1,2,3,4,5,6,7'
            # pserver
            # os.environ['TRAINING_ROLE'] = 'PSERVER'

            # trainer
            os.environ['TRAINING_ROLE'] = 'TRAINER'
            os.environ['PADDLE_TRAINER_ID'] = '0'

            cmd = [
                sys.executable, "-u", "../ps/ps_dnn_trainer.py", "-m",
                self.config['ps_mode_config'], "--run_minimize",
                self.config['run_minimize'], "--run_single_pass",
                self.config['run_single_pass'], "--run_the_one_ps",
                self.config['run_the_one_ps'], "--debug_new_pass",
                self.config['debug_new_pass'], "--debug_new_minimize",
                self.config['debug_new_minimize'], "--applied_pass_name",
                self.config['applied_pass_name'], "--debug_the_one_ps",
                self.config['debug_the_one_ps']
            ]

        cmd = [shlex.quote(c) for c in cmd]
        prepare_python_path_and_return_module(__file__)
        exitcode = os.system(' '.join(cmd))
