Swagger(OpenAPI)是一个强大的API文档和测试工具,也可以用于监控API的运行状态。以下是利用Swagger监控Linux环境下API运行状态的方案:
# 使用Node.js安装
npm install swagger-ui-express
# 或者使用Docker
docker pull swaggerapi/swagger-ui
docker run -p 8080:8080 swaggerapi/swagger-ui
const express = require('express');
const swaggerUi = require('swagger-ui-express');
const YAML = require('yamljs');
const swaggerDocument = YAML.load('./api.yaml');
const app = express();
app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerDocument));
在API中添加健康检查端点:
paths:
/health:
get:
tags:
- Monitoring
summary: API健康状态检查
responses:
200:
description: API运行正常
content:
application/json:
schema:
type: object
properties:
status:
type: string
uptime:
type: number
timestamp:
type: string
/metrics:
get:
tags:
- Monitoring
summary: API性能指标
responses:
200:
description: 返回性能指标
content:
application/json:
schema:
type: object
properties:
memoryUsage:
type: object
cpuUsage:
type: object
responseTimes:
type: array
items:
type: object
可以在Swagger UI中设置定期自动测试API端点:
paths:
/metrics/prometheus:
get:
tags:
- Monitoring
summary: Prometheus格式的指标
responses:
200:
description: Prometheus格式的指标数据
content:
text/plain:
schema:
type: string
在Swagger文档中添加告警条件说明:
x-alerts:
- condition: response_time > 500ms
severity: warning
message: API响应时间超过阈值
- condition: http_status == 500
severity: critical
message: API返回服务器错误
paths:
/logs:
get:
tags:
- Monitoring
summary: 获取API请求日志
parameters:
- name: limit
in: query
schema:
type: integer
responses:
200:
description: 请求日志列表
content:
application/json:
schema:
type: array
items:
type: object
properties:
timestamp:
type: string
method:
type: string
path:
type: string
status:
type: integer
duration:
type: number
/system:
get:
tags:
- Monitoring
summary: 系统资源使用情况
responses:
200:
description: 系统资源信息
content:
application/json:
schema:
type: object
properties:
cpu:
type: object
memory:
type: object
disk:
type: object
network:
type: object
可以将Swagger与以下工具集成创建可视化监控仪表板:
通过以上方法,您可以充分利用Swagger工具链来全面监控Linux环境下API的运行状态、性能和健康状况。