310 lines
9.5 KiB
Python
Executable File
310 lines
9.5 KiB
Python
Executable File
#!/usr/bin/python
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# -*- coding: UTF-8 -*-
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import sys
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import json
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import os
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import smtplib
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import time
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from email.mime.text import MIMEText
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from email.header import Header
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# 希望的demo实现效果：
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# 1. 从stdin拿到告警信息之后，格式化为一个有缩进的json写入一个临时文件
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# 2. 文件路径和名字是.alerts/${timestamp}_${ruleid}
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# 3. 调用SMTP服务器发送告警，微信、钉钉、飞书、slack、jira、短信、电话等等留给社区实现
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# 脚本二开指南
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# 1. 可以根据下面的TEST_ALERT_JSON 中的结构修改脚本发送逻辑，定制化告警格式格式如下
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"""
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[告警类型：prometheus]
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[规则名称：a]
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[是否已恢复：已触发]
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[告警级别：1]
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[触发时间：2021-07-02 16:05:14]
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[可读表达式：go_goroutines>0]
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[当前值：[vector={__name__="go_goroutines", instance="localhost:9090", job="prometheus"}]: [value=33.000000]]
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[标签组：instance=localhost:9090 job=prometheus]
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"""
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# 2. 每个告警会以json文件的格式存储在LOCAL_EVENT_FILE_DIR 下面，文件名为 filename = '%d_%d_%d' % (rule_id, event_id, trigger_time)
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# 3. 告警通道需要自行定义Send类中的send_xxx同名方法，反射调用：举例 event.notify_channels = [qq dingding] 则需要Send类中 有 send_qq send_dingding方法
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# 4. im发群信息，比如钉钉发群信息需要群的webhook机器人 token，这个信息可以在user的contacts map中，各个send_方法处理即可
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# 5. 用户创建一个虚拟的用户保存上述im群 的机器人token信息 user的contacts map中
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import requests
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mail_host = "smtp.163.com"
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mail_port = 994
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mail_user = "ulricqin"
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mail_pass = "password"
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mail_from = "ulricqin@163.com"
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# just for test
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mail_body = """
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<p>邮件发送测试</p>
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<p><a href="https://www.baidu.com">baidu</a></p>
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"""
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# 本地告警event json存储目录
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LOCAL_EVENT_FILE_DIR = ".alerts"
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NOTIFY_CHANNELS_SPLIT_STR = " "
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# dingding 群机器人token 配置字段
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DINGTALK_ROBOT_TOKEN_NAME = "dingtalk_robot_token"
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DINGTALK_API = "https://oapi.dingtalk.com/robot/send"
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# stdin 告警json实例
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TEST_ALERT_JSON = {
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"event": {
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"alert_duration": 10,
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"notify_channels": "dingtalk",
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"res_classpaths": "",
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"id": 4,
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"notify_group_objs": None,
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"rule_note": "",
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"history_points": [
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{
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"metric": "go_goroutines",
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"points": [
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{
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"t": 1625213114,
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"v": 33.0
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}
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],
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"tags": {
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"instance": "localhost:9090",
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"job": "prometheus"
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}
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}
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],
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"priority": 1,
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"last_sent": True,
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"tag_map": {
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"instance": "localhost:9090",
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"job": "prometheus"
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},
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"hash_id": "ecb258d2ca03454ee390a352913c461b",
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"status": 0,
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"tags": "instance=localhost:9090 job=prometheus",
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"trigger_time": 1625213114,
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"res_ident": "",
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"rule_name": "a",
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"is_prome_pull": 1,
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"notify_users": "1",
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"notify_groups": "",
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"runbook_url": "",
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"values": "[vector={__name__=\"go_goroutines\", instance=\"localhost:9090\", job=\"prometheus\"}]: [value=33.000000]",
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"readable_expression": "go_goroutines>0",
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"notify_user_objs": None,
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"is_recovery": 0,
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"rule_id": 1
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},
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"rule": {
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"alert_duration": 10,
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"notify_channels": "dingtalk",
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"enable_stime": "00:00",
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"id": 1,
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"note": "",
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"create_by": "root",
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"append_tags": "",
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"priority": 1,
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"update_by": "root",
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"type": 1,
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"status": 0,
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"recovery_notify": 0,
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"enable_days_of_week": "1 2 3 4 5 6 7",
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"callbacks": "localhost:10000",
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"notify_users": "1",
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"notify_groups": "",
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"runbook_url": "",
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"name": "a",
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"update_at": 1625211576,
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"create_at": 1625211576,
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"enable_etime": "23:59",
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"group_id": 1,
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"expression": {
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"evaluation_interval": 4,
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"promql": "go_goroutines>0"
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}
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},
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"users": [
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{
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"username": "root",
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"status": 0,
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"contacts": {
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"dingtalk_robot_token": "xxxxxx"
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},
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"create_by": "system",
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"update_at": 1625211432,
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"create_at": 1624871926,
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"email": "",
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"phone": "",
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"role": "Admin",
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"update_by": "root",
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"portrait": "",
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"nickname": "\u8d85\u7ba1",
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"id": 1
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}
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]
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}
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def main():
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payload = json.load(sys.stdin)
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trigger_time = payload['event']['trigger_time']
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event_id = payload['event']['id']
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rule_id = payload['rule']['id']
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notify_channels = payload['event'].get('notify_channels').strip().split(NOTIFY_CHANNELS_SPLIT_STR)
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if len(notify_channels) == 0:
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msg = "notify_channels_empty"
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print(msg)
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return
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# 持久化到本地json文件
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persist(payload, rule_id, event_id, trigger_time)
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# 生成告警内容
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alert_content = content_gen(payload)
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for ch in notify_channels:
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send_func_name = "send_{}".format(ch.strip())
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has_func = hasattr(Send, send_func_name)
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if not has_func:
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msg = "[send_func_name_err][func_not_found_in_Send_class:{}]".format(send_func_name)
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print(msg)
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continue
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send_func = getattr(Send, send_func_name)
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send_func(alert_content, payload)
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def content_gen(payload):
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# 生成格式化告警内容
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text = ""
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event_obj = payload.get("event")
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rule_type = event_obj.get("is_prome_pull")
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type_str_m = {1: "prometheus", 0: "n9e"}
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rule_type = type_str_m.get(rule_type)
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text += "[告警类型：{}]\n".format(rule_type)
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rule_name = event_obj.get("rule_name")
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text += "[规则名称：{}]\n".format(rule_name)
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is_recovery = event_obj.get("is_recovery")
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is_recovery_str_m = {1: "已恢复", 0: "已触发"}
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is_recovery = is_recovery_str_m.get(is_recovery)
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text += "[是否已恢复：{}]\n".format(is_recovery)
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priority = event_obj.get("priority")
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text += "[告警级别：{}]\n".format(priority)
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trigger_time = event_obj.get("trigger_time")
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text += "[触发时间：{}]\n".format(time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(int(trigger_time))))
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readable_expression = event_obj.get("readable_expression")
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text += "[可读表达式：{}]\n".format(readable_expression)
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values = event_obj.get("values")
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text += "[当前值：{}]\n".format(values)
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tags = event_obj.get("tags")
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text += "[标签组：{}]\n".format(tags)
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print(text)
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return text
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def persist(payload, rule_id, event_id, trigger_time):
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if not os.path.exists(LOCAL_EVENT_FILE_DIR):
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os.makedirs(LOCAL_EVENT_FILE_DIR)
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filename = '%d_%d_%d' % (rule_id, event_id, trigger_time)
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filepath = os.path.join(LOCAL_EVENT_FILE_DIR, filename)
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with open(filepath, 'w') as f:
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f.write(json.dumps(payload, indent=4))
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class Send(object):
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@classmethod
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def send_mail(cls, payload):
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users = payload.get("event").get("users")
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emails = [x.get("email") for x in users]
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if not emails:
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print("[emails_empty]")
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return
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recipients = emails
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message = MIMEText(mail_body, 'html', 'utf-8')
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message['From'] = mail_from
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message['To'] = ", ".join(recipients)
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message["Subject"] = "n9e alert"
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smtp = smtplib.SMTP_SSL(mail_host, mail_port)
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smtp.login(mail_user, mail_pass)
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smtp.sendmail(mail_from, recipients, message.as_string())
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smtp.close()
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print("send_mail_success")
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@classmethod
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def send_wecom(cls, payload):
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print("send_wecom")
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@classmethod
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def send_dingtalk(cls, alert_content, payload):
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# 钉钉发群信息需要群的webhook机器人 token，这个信息可以在user的contacts map中
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users = payload.get("users")
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for u in users:
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contacts = u.get("contacts")
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dingtalk_robot_token = contacts.get(DINGTALK_ROBOT_TOKEN_NAME, "")
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if dingtalk_robot_token == "":
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print("dingtalk_robot_token_not_found")
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continue
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dingtalk_api_url = "{}?access_token={}".format(DINGTALK_API, dingtalk_robot_token)
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atMobiles = [u.get("phone")]
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headers = {'Content-Type': 'application/json;charset=utf-8'}
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payload = {
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"msgtype": "text",
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"text": {
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"content": alert_content
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},
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"at": {
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"atMobiles": atMobiles,
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"isAtAll": False
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}
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}
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res = requests.post(dingtalk_api_url, json.dumps(payload), headers=headers)
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print(res.status_code)
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print(res.text)
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print("send_dingtalk")
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def mail_test():
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print("mail_test_todo")
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recipients = ["ulricqin@qq.com", "ulric@163.com"]
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message = MIMEText(mail_body, 'html', 'utf-8')
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message['From'] = mail_from
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message['To'] = ", ".join(recipients)
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message["Subject"] = "n9e alert"
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smtp = smtplib.SMTP_SSL(mail_host, mail_port)
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smtp.login(mail_user, mail_pass)
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smtp.sendmail(mail_from, recipients, message.as_string())
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smtp.close()
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print("mail_test_done")
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if __name__ == "__main__":
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if len(sys.argv) == 1:
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main()
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elif sys.argv[1] == "mail":
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mail_test()
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else:
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print("I am confused")
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