import sys
import os
import asyncio
import logging
import time

import utils
import rov_server_config

from concurrent.futures import ThreadPoolExecutor


health_instances = []
ess_instances = []


async def ess_instance(create_client, slb_client, ess_count, max_workers):
    """
    扩容机器并运行新服务
    :param create_client: 购买机器客户端连接
    :param slb_client: 修改负载均衡权限
    :param ess_count: 扩容数量
    :param max_workers: 线程数
    :return:
    """
    # 1. 购买机器并启动
    ess_instance_ids = utils.create_multiple_instances(
        amount=ess_count,
        client=create_client,
        **rov_server_config.instance_config,
    )
    time.sleep(60)

    # 2. 发送启动脚本到机器上
    utils.send_file_to_ecs(client=create_client, instance_id_list=ess_instance_ids, **rov_server_config.start_sh)
    logging.info(f"send start shell file finished, instances: {ess_instance_ids}")
    # 3. 启动服务
    server_start_sh = os.path.join(rov_server_config.start_sh['target_dir'], rov_server_config.start_sh['name'])
    server_start_commend = f"sh {server_start_sh}"
    utils.run_command(client=create_client, instance_ids=ess_instance_ids, command=server_start_commend)
    # 4. 异步探活
    global health_instances
    health_instances = []
    max_wait_time = 120
    loop = asyncio.get_running_loop()
    executor = ThreadPoolExecutor(max_workers=max_workers)
    tasks = [
        loop.run_in_executor(executor, utils.rov_server_health_check, *args) for args in
        [(slb_client, instance_id, max_wait_time) for instance_id in ess_instance_ids]
    ]
    await asyncio.wait(tasks)
    logging.info(f"health instances count: {len(health_instances)}, {health_instances}")
    # 5. 挂载流量
    if len(health_instances) > 0:
        # 所有机器探活成功
        time.sleep(60)
        add_weight_list = [(10, 30), (20, 20), (40, 10), (60, 10), (80, 10), (100, 10)]
        # utils.set_instance_weight_process(client=slb_client,
        #                                   slb_id=rov_server_config.slb_id,
        #                                   instance_id_list=ess_instance_ids,
        #                                   weight_list=add_weight_list)
        global ess_instances
        ess_instances.extend(ess_instance_ids)
        logging.info(f"ess count: {ess_count}, "
                     f"create count: {len(ess_instance_ids)}, "
                     f"finished count: {len(health_instances)}")
    else:
        logging.info(f"ess count: {ess_count}, "
                     f"create count: {len(ess_instance_ids)}, "
                     f"health count: {len(health_instances)}")
        sys.exit()


def main():
    try:
        slb_client = utils.connect_client(access_key_id=rov_server_config.slb_client_params['access_key_id'],
                                          access_key_secret=rov_server_config.slb_client_params['access_key_secret'],
                                          region_id=rov_server_config.slb_client_params['region_id'])
        create_client = utils.connect_client(access_key_id=rov_server_config.create_client_params['access_key_id'],
                                             access_key_secret=rov_server_config.create_client_params['access_key_secret'],
                                             region_id=rov_server_config.create_client_params['region_id'])
        # 获取批量创建ECS实例的数量
        ess_instance_count = int(sys.argv[1])
        # 扩容机器并启动服务
        logging.info(f"ess instances start ...")
        logging.info(f"ess instance count: {ess_instance_count}")
        asyncio.run(ess_instance(create_client=create_client, slb_client=slb_client,
                                 ess_count=ess_instance_count, max_workers=2))
        logging.info(f"ess instances end!")
    except Exception as e:
        logging.error(e)


if __name__ == '__main__':
    main()