LAS/LAS.py

#!/usr/bin/env python3.9

from threading import Thread
import configparser
import os
import time
import traceback
import sys
import json

import g_config
import common.sys_comm as sys_comm
from common.sys_comm import (
    LOGDBG, LOGINFO, LOGWARN, LOGERR, EC,
    get_utc_time_ms
)

import mqtt.mqtt_process as mp
from mqtt.mqtt_process import (
    MQTTClientThread, RobustMQTTClient, MQTTConsumerThread, g_mqtt_client, g_mqtt_consumer
)

import db.db_process as db_process
from db.db_process import db_req_que
from db.db_process import DBRequest_Async
from db.db_process import (
    db_execute_sync, db_execute_async
)
import db.db_sqls as sqls

import device.dev_mng as g_Dev
from device.dev_mng import (
    Device, g_dev_mgr, init_dev_mng
)

import core.alarm_plan_manager as ap_mgr
from core.alarm_plan_manager import (
    AlarmPlanManager,
    init_alarm_plan_mgr,
    start_alarm_plan_mgr,
    cb_handle_query_all_alarm_plan_info
)
from core.alarm_plan_dispatcher import (
    init_alarm_plan_disp,
    start_alarm_plan_dispatcher
)

import core.g_LAS as g_las


# 系统初始化
def sys_init():
    try:
        # 创建日志目录
        if not os.path.exists("./log/"):
            os.makedirs("./log/")
        print("create log dir succeed !")

        # 读取配置文件
        config = configparser.ConfigParser()
        with open('./conf.ini', 'r', encoding='utf-8') as f:
            config.read_file(f)
            if not (config.has_option('conf', 'module_name') and
                    config.has_option('conf', 'server_ip')):
                LOGDBG("sys_init failed, invalid conf.ini param")
                return 0
        LOGDBG("read conf.ini succeed !")

        server_ip = config["conf"]["server_ip"].strip()
        module_name = config["conf"]["module_name"].strip()
        sp_id = module_name + "_" + str(get_utc_time_ms())
        if g_config.init_g_sys_conf(server_ip, module_name, sp_id):
            print(f" ================ system init failed, invalid server_ip: {server_ip}")
            LOGERR(f" ================ system init failed, invalid server_ip: {server_ip}")
            return -1

        # 启动成功，打印系统信息
        module_name     = g_config.g_sys_conf["module_name"]
        platform        = g_config.g_sys_conf["platform"]
        host_ip         = g_config.g_sys_conf["host_ip"]
        service         = g_config.g_sys_conf["service"]["ip"]
        max_log_files   = sys_comm.g_log_conf["max_log_files"]
        max_log_size    = sys_comm.g_log_conf["max_log_size"]
        log_lvl         = sys_comm.g_log_conf["log_lvl"]
        sp_id           = g_config.g_sys_conf["sp_id"]

        print(f" ================ system init succeed !")
        print(f" ================ module         : {module_name}")
        print(f" ================ platform       : {platform}")
        print(f" ================ host_ip        : {host_ip}")
        print(f" ================ service        : {service}")
        print(f" ================ max_log_files  : {max_log_files}")
        print(f" ================ max_log_size   : {max_log_size}")
        print(f" ================ log_lvl        : {log_lvl}")
        print(f" ================ sp_id          : {sp_id}")
        print(f" ================ version        : v B1.0")

        LOGINFO(f" ================ system init succeed !")
        LOGINFO(f" ================ module         : {module_name}")
        LOGINFO(f" ================ platform       : {platform}")
        LOGINFO(f" ================ host_ip        : {host_ip}")
        print(f" ================ service        : {service}")
        LOGINFO(f" ================ max_log_files  : {max_log_files}")
        LOGINFO(f" ================ max_log_size   : {max_log_size}")
        LOGINFO(f" ================ log_lvl        : {log_lvl}")
        LOGINFO(f" ================ sp_id          : {sp_id}")
        LOGINFO(f" ================ version        : v B1.0")

        return 0

    except json.JSONDecodeError as e:
        tb_info = traceback.extract_tb(e.__traceback__)
        for frame in tb_info:
            LOGERR(f"[{frame.filename}:{frame.lineno}] @{frame.name}(), error:{e}, {e.doc}")
        return EC.EC_FAILED
    except Exception as e:
        tb_info = traceback.extract_tb(e.__traceback__)
        for frame in tb_info:
            LOGERR(f"[{frame.filename}:{frame.lineno}] @{frame.name}(), error: {e}")
        return EC.EC_FAILED


# 轮循执行一些任务
def run():
    # 轮循处理任务
    while True:
        time.sleep(1)


def query_events_expire_range():
    event_save_range = 90
    try:
        result = db_execute_sync(sql=sqls.sql_event_save_range, timeout=15)
        if result and len(result) == 1:
            row = result[0]
            param_value = row.get("param_value")
            if param_value is not None:   # 只要不是 None，就用数据库的值
                event_save_range = param_value
        else:
            LOGWARN("found invalid event_save_range, use default 90")

        return event_save_range

    except Exception as e:
        LOGERR(f"query event_save_range failed: {e}, use default 90")
        return EC.EC_FAILED


# 创建事件过期计划
def create_events_expire_plan():
    event_save_range = query_events_expire_range()
    if not event_save_range:
        return EC.EC_FAILED
    g_las.g_alarm_plan_mgr.create_clean_expire_events_task(event_save_range)
    return 0


# 主线程
def main_process():
    if not g_las.g_alarm_plan_mgr:
        LOGERR(f"error: g_alarm_plan_mgr not init")
        return EC.EC_FAILED
    if not g_las.g_alarm_plan_disp:
        LOGERR(f"error: g_alarm_plan_disp not init")
        return EC.EC_FAILED

    # 查询所有设备信息
    db_req_que.put(DBRequest_Async(sql=sqls.sql_query_all_dev_info,
                             callback=g_Dev.g_dev_mgr.cb_handle_query_all_dev_info))

    # 查询所有告警计划
    db_req_que.put(DBRequest_Async(sql=sqls.sql_query_all_alarm_plan,
                             callback=cb_handle_query_all_alarm_plan_info))

    # 创建任务：创建事件过期计划
    iRet = create_events_expire_plan()
    if iRet:
        LOGERR(f"create_events_expire_plan failed, process termination")
        return iRet

    # 轮循任务
    run()


def main():

    # 初始化
    if (0 != sys_init()):
        sys.exit(EC.EC_FAILED)

    # 初始化 dev_mng
    init_dev_mng()
    g_Dev.g_dev_mgr.start()

    # 初始化LAS
    init_alarm_plan_mgr()
    init_alarm_plan_disp()
    start_alarm_plan_dispatcher()   # 事件分发器
    start_alarm_plan_mgr()  # 告警计划管理器

    # 数据库线程
    db_thread = db_process.create_db_process()
    db_thread.start()

    # MQTT 消息线程
    mp.g_mqtt_client = RobustMQTTClient()
    mp.g_mqtt_client.start()
    mp.g_mqtt_consumer = MQTTConsumerThread()
    mp.g_mqtt_consumer.start()

    LOGDBG(f" ================ LAS start success ...")

    # 主线程
    if not main_process():
        LOGERR(f"main_process error, process termination")
        sys.exit(EC.EC_FAILED)

main()