server-deploy/longvideo_quick_restart_with_ess.py

import logging
import requests
import time
import docker
import asyncio
import sys

import longvideo_config
import utils

from concurrent.futures import ThreadPoolExecutor

logging.basicConfig(level=logging.INFO,
                    format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
                    datefmt='%a, %d %b %Y %H:%M:%S')

health_instances = []
ess_instances = []


def server_health_check(client, instance_id):
    """
    服务健康检查
    :param client: 客户端连接
    :param instance_id: instanceId
    :return:
    """
    global health_instances
    ip_address = utils.get_ip_address(client=client, instance_id=instance_id)
    while True:
        health_check_url = f"http://{ip_address}:8080/longvideoapi/test"
        try:
            http_code = requests.get(health_check_url).status_code
        except:
            logging.info("images is downloading")
            http_code = 0

        if http_code == 200:
            health_instances.append((instance_id, ip_address))
            break
        else:
            time.sleep(10)


def restart(slb_client, instance_id, image_name):
    """重启容器并探活"""
    # 1. 获取ip
    ip_address = utils.get_ip_address(client=slb_client, instance_id=instance_id)
    logging.info(f"ip address：{instance_id}/{ip_address}")
    # 3. 重启容器
    docker_client = docker.DockerClient(base_url=f'tcp://{ip_address}:2375', timeout=60)
    image_id = docker_client.containers.get(image_name)
    image_id.restart()
    logging.info(f"docker restart finished, ip address：{instance_id}/{ip_address}")
    time.sleep(5)
    # 4. 探活
    server_health_check(slb_client, instance_id)
    logging.info(f"health check finished, ip address：{instance_id}/{ip_address}")


async def server_restart_all(slb_client, instance_id_list, image_name, max_workers):
    try:
        # 1. 摘流量
        utils.set_instance_weight_process_with_slbs(client=slb_client,
                                                    slb_id_list=longvideo_config.slb_id_list,
                                                    instance_id_list=instance_id_list,
                                                    weight_list=[(0, 15)])
        logging.info(f"set weight with 0 finished.")

        # 2. 异步重启 & 探活
        global health_instances
        loop = asyncio.get_running_loop()
        executor = ThreadPoolExecutor(max_workers=max_workers)
        tasks = [
            loop.run_in_executor(executor, restart, *args) for args in
            [(slb_client, instance_id, image_name) for instance_id in instance_id_list]
        ]
        await asyncio.wait(tasks)
        logging.info(f"health instances count: {len(health_instances)}, {health_instances}")

        # 3. 挂载流量
        if len(health_instances) == len(instance_id_list):
            time.sleep(10)
            add_weight_list = [(10, 5), (20, 5), (40, 5), (60, 5), (80, 5), (100, 5)]
            utils.set_instance_weight_process_with_slbs(client=slb_client,
                                                        slb_id_list=longvideo_config.slb_id_list,
                                                        instance_id_list=[instance[0] for instance in health_instances],
                                                        weight_list=add_weight_list)
            logging.info(f"set weight finished instance count: {len(health_instances)}, {health_instances}")
        else:
            logging.info(f"ess count: {len(instance_id_list)}, "
                         f"health count: {len(health_instances)}")
            sys.exit()

    except Exception as e:
        logging.error(f"server restart fail!")
        logging.error(e)


async def ess_instance(create_client, slb_client, ess_count, max_workers, version):
    """
    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
    :param version: 版本标记
    :return:
    """
    # 1. 购买机器并启动
    ess_instance_ids = utils.create_multiple_instances(
        amount=ess_count,
        client=create_client,
        **longvideo_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, **longvideo_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(longvideo_config.start_sh['target_dir'], longvideo_config.start_sh['name'])
    server_start_commend = f"sh {server_start_sh} {version}"
    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 = []
    loop = asyncio.get_running_loop()
    executor = ThreadPoolExecutor(max_workers=max_workers)
    tasks = [
        loop.run_in_executor(executor, server_health_check, *args) for args in
        [(slb_client, instance_id) 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) == len(ess_instance_ids):
        # 所有机器探活成功
        time.sleep(10)
        utils.add_backend_servers_with_slbs(client=slb_client,
                                            slb_id_list=longvideo_config.slb_id_list,
                                            instances=health_instances)
        health_instance_ids = [instance_id for instance_id, _ in health_instances]
        add_weight_list = [(10, 5), (20, 5), (40, 5), (60, 5), (80, 5), (100, 5)]
        utils.set_instance_weight_process_with_slbs(client=slb_client,
                                                    slb_id_list=longvideo_config.slb_id_list,
                                                    instance_id_list=health_instance_ids,
                                                    weight_list=add_weight_list)
        global ess_instances
        ess_instances.extend(health_instance_ids)
        logging.info(f"ess count: {ess_count}, "
                     f"create count: {len(ess_instance_ids)}, "
                     f"finished count: {len(health_instance_ids)}")
    else:
        logging.info(f"ess count: {ess_count}, "
                     f"create count: {len(ess_instance_ids)}, "
                     f"health count: {len(health_instances)}")
        sys.exit()


def remove_instances(create_client, slb_client, instance_ids):
    """
    停止并释放机器
    :param create_client:
    :param slb_client:
    :param instance_ids: instanceId type-list
    :return: None
    """
    # 1. 摘流量
    utils.set_instance_weight_process_with_slbs(client=slb_client,
                                                slb_id_list=longvideo_config.slb_id_list,
                                                instance_id_list=instance_ids,
                                                weight_list=[(0, 20)])
    logging.info(f"set weight = 0 finished, instances: {instance_ids}")
    time.sleep(10)
    # 2.移除slb
    utils.remove_backend_servers_with_slbs(client=slb_client,
                                           slb_id_list=longvideo_config.slb_id_list,
                                           instances=instance_ids)
    # 3. 停止机器
    utils.stop_instances(client=create_client, instance_ids=instance_ids)
    logging.info(f"instances stop finished, instances: {instance_ids}")
    # 4. 判断机器运行状态是否为Stopped
    while True:
        response = utils.get_instances_status(client=create_client, instance_ids=instance_ids)
        if response.get('Code') is None:
            instances_list = response.get('InstanceStatuses').get('InstanceStatus')
            # logging.info(instances_list)
            stopped_instances = [instance.get('InstanceId') for instance in instances_list
                                 if instance.get('Status') == 'Stopped']
            if len(stopped_instances) == len(instance_ids):
                logging.info(f"instances stopped status set success, instances: {stopped_instances}")
                break
            else:
                logging.info(f"stopped instances count = {len(stopped_instances)}, instances: {stopped_instances}")
                time.sleep(5)
        else:
            logging.error(response)
            sys.exit()
    # 5. 释放机器
    response = utils.release_instances(client=create_client, instance_ids=stopped_instances)
    if response.get('Code') is None:
        logging.info(f"release instances finished, instances: {stopped_instances}")
    else:
        logging.error(f"release instances fail!!!")
        sys.exit()


def main():
    try:
        slb_client = utils.connect_client(access_key_id=longvideo_config.slb_client_params['access_key_id'],
                                          access_key_secret=longvideo_config.slb_client_params['access_key_secret'],
                                          region_id=longvideo_config.slb_client_params['region_id'])
        create_client = utils.connect_client(access_key_id=longvideo_config.create_client_params['access_key_id'],
                                             access_key_secret=longvideo_config.create_client_params[
                                                 'access_key_secret'],
                                             region_id=longvideo_config.create_client_params['region_id'])

        # 1. 获取slb下所有机器
        online_instance_ids = utils.get_instance_ids(client=slb_client, slb_id=longvideo_config.slb_id_list[0])
        online_instance_count = len(online_instance_ids)
        logging.info(f"online instance count: {online_instance_count}.")
        logging.info(f"online instance ids: {online_instance_ids}")

        # 2. 扩容机器并启动新服务 扩容数量：线上机器数量
        logging.info(f"ess instances start ...")
        ess_instance_count = online_instance_count
        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=ess_instance_count, version='latest'))
        logging.info(f"ess instances end!")

        # 3. 重启线上原有服务器
        image_name = 'longvideoapi'
        asyncio.run(server_restart_all(slb_client=slb_client, instance_id_list=online_instance_ids,
                                       image_name=image_name, max_workers=online_instance_count))
        logging.info(f"server restart finished!")

        # 4. 停止并释放扩容机器
        logging.info(f"stop & release instances start ...")
        remove_instances(create_client=create_client, slb_client=slb_client, instance_ids=ess_instances)
        logging.info(f"stop & release instances end!")
    except Exception as e:
        logging.error(e)


if __name__ == '__main__':
    main()