cube.js prometheus 监控

这个问题是slack 中有人问到的，同时也是社区提的比较多的，基于prometheus 的监控方案是一个很不错的选择
因为cube.js 是基于express 开发的，同时官方也提供了插件扩展点的方法，我们可以直接使用现成的prometheus
express 扩展

参考配置

prometheus 模块

 
//const shrinkRay = require('shrink-ray-current');

const promMid = require('express-prometheus-middleware');

module.exports = function (app) {

    if (process.env.NODE_ENV == "production") {

        app.get("/", function (req, res) {

            res.send("oneservice api")

        })

    }

    // always use zip 

    //   app.use(shrinkRay())

    app.use(promMid({

        metricsPath: '/metrics',

        collectDefaultMetrics: true,

        requestDurationBuckets: [0.1, 0.5, 1, 1.5],

        requestLengthBuckets: [512, 1024, 5120, 10240, 51200, 102400],

        responseLengthBuckets: [512, 1024, 5120, 10240, 51200, 102400],

    }));
 
}

cube.js 使用插件

// Cube.js configuration options: https://cube.dev/docs/config

const { DremioDriver, DremioQuery } = require("@dalongrong/mydremio-driver")

const MyS3FileRepository = require("@dalongrong/cube-s3repository")

const { schemaVersion, checkAuth, homePage } = require('./libs/oneserviceapi')

const logger = require("./libs/logger")

const cubeConf  = require("./libs/cubeConf")

module.exports = {

    basePath: "/oneserviceapi/:projectid",

    schemaVersion: schemaVersion,

    dialectFactory: (dataSource) => {

        return DremioQuery

    },

    orchestratorOptions: cubeConf.orchestratorOptions,

    logger: (msg, params) => {

        if (process.env.NODE_ENV == "production") {

            logger.log({

                level: 'info',

                message: `${JSON.stringify({ msg, ...params })}`

            });

        } else {

            console.log(`${JSON.stringify({ msg, ...params })}`)

        }

    },

    telemetry: false,

    dbType: ({ dataSource } = {}) => {

        return "mydremio"

    },

    driverFactory: ({ dataSource } = {}) => {

        return new DremioDriver({})

    },

    repositoryFactory: ({ securityContext }) => {

        return new MyS3FileRepository.S3FileRepository({

            objectPrefix: securityContext.projectId,

            bucket: securityContext.tenantId,

        })

    },

    queryRewrite: (query, { securityContext }) => {

        return query;

      },

    checkAuth: checkAuth,

    contextToAppId: ({ securityContext }) => {

        return `ONESERVICEAPP_${securityContext.projectId}`

    },

    initApp: homePage

};

prometheus 环境准备

version: "3"

services: 

    grafana:

      image: grafana/grafana    

      ports:

      - "3000:3000"

    prometheus:

      image: prom/prometheus

      volumes:

      - "./prometheus.yml:/etc/prometheus/prometheus.yml"

      ports:

      - "9090:9090"

prometheus.yml

scrape_configs:

  - job_name: cubejs

    metrics_path: /metrics

    scrape_interval: 10s

    scrape_timeout: 10s

    static_configs:

      - targets: ['<hostip>:4000']