init

+{
+    "extends": "yoho",
+    "parserOptions": {
+        "sourceType": "module",
+        "ecmaVersion": 2017
+    }
+}

+node_modules/
+package-lock.json
+coverage/
+.nyc_output/

+# influx-batch-sender
+
+buffer message and send them in a bulk.
+
+## useage
+
+``` javascript
+const Sender = require('../index');
+
+const sender = new Sender({
+    host: 'influxd.yoho.cn',
+    db: 'web-apm',
+    measurement: 'api-duration',
+    duration: 2000,  // 多长时间发送一次，默认值是　2000ms
+    records: 200,  // 累积多少条消息发送一次，默认值是100
+    immediate: true // 是否立刻发送消息，设置为 true 会忽略 records 设置，默认值是 false
+    path: "/url", // 重新设置发送消息的路径，默认值是 /write
+});
+
+setInterval(() => {
+    sender.addMessage({
+        tags: {
+            reqid: 'sdasda'+Math.random(),
+            route: 'test'
+        },
+        fields: {
+            dasd: "d123asda"
+        }
+    });
+}, Math.random() * 100)
+
+```

+/**
+ *  test addmessages
+ */
+const Sender = require('../index');
+
+const sender = new Sender({
+    host: 'influxd.yoho.cn',
+    db: 'web-apm',
+    measurement: 'api-duration',
+    duration: 2000,
+    records: 200
+});
+
+let num = 1;
+
+let num2 = 1;
+
+setInterval(() => {
+    if (num > 10000) {
+        console.log('1 done!');
+        return;
+    }
+    sender.addMessage({
+        tags: {
+            reqid: num + '',
+            route: 'test'
+        },
+        fields: {
+            dasd: 'd123asda'
+        }
+    });
+    num++;
+}, Math.random() * 10);
+
+
+setInterval(() => {
+    if (num2 > 10000) {
+        console.log('2 done!');
+        return;
+    }
+    sender.addMessage({
+        tags: {
+            reqid: num2 + '',
+            route: 'test2'
+        },
+        fields: {
+            dasd: '12131'
+        }
+    });
+    num2++;
+}, Math.random() * 10);

+const debug = require('debug')('apm-agent');
+const EventEmitter = require('events');
+const request = require('request');
+
+/**
+ * buffer message and send them in a bulk 
+ * 
+ * const options = 
+ * {
+ *   host:'xxx.xxx.xxx',
+ *   port:80,
+ *   db:'xxxxx',
+ *   measurement:'api-duration'
+ *   duration:2000 //ms per 200 send message,
+ *   records:100 //when message over 100 send them
+ *   immediate: true // send message immediate not wart records count if true
+ *   path: "/url", // set target path default is /write
+ * }
+ */
+
+class Sender extends EventEmitter {
+    constructor(options) {
+        super();
+        this.bulks = [];
+        this.batchMessages = [];
+        this.options = options;
+        this.options.duration = this.options.duration || 2000;
+        this.options.records = this.options.records || 100;
+        this.options.path = this.options.path || '/write';
+        this.options.port = this.options.port || 80;
+
+        if (!this.options.db || !this.options.host) {
+            console.error('config error: db or host undefined!');
+            return;
+        }
+
+        if  (this.options.immediate) {
+            return;
+        }
+
+        // pre duration send array
+        setInterval(() => {
+            this._send();
+            debug('batchMessages duration sent!');
+        }, this.options.duration);
+    }
+
+    /**
+     * add message to batchMessage
+     * 
+     * @example 
+     * {
+     *   measurement:'test',
+     *   tags:{
+     *     type:'api',
+     *     preqID:'MdHy21313',
+     *     api:'app.brand.newBrandList',
+     *     route:'/sada/dsa/test'
+     *   },
+     *   fields:{
+     *     duration:123
+     *   }
+     * }
+     * @param {Object} message 
+     */
+    addMessage(message) {
+        message.time = message.time || new Date().getTime() * 1000000;
+        debug('add message! %O', message);
+        this.batchMessages.push(message);
+
+        if ((this.batchMessages.length > this.options.records) || this.options.immediate) {
+            this._send();
+            debug('batchMessages over records and sent!');
+        }
+    }
+
+    /**
+     * use tcp send message
+     * @private
+     */
+    _send() {
+        if (!this.options.db || !this.options.host) {
+            return;
+        }
+
+        const len = this.batchMessages.length;
+
+        if (len < 1) {
+            debug('batchMessages is empty!');
+            return;
+        }
+
+        const bulk = this.batchMessages.splice(0, len);
+
+        debug('send bulkMessages! %O', bulk);
+        const options = {
+            headers: {
+                'content-type': 'application/json'
+            },
+            url: `http://${this.options.host}:${this.options.port}${this.options.path}`,
+            qs: {
+                db: this.options.db
+            },
+            method: 'POST',
+            body: JSON.stringify(bulk)
+        };
+
+        request(options, (error, res, body) => {
+            if (error) {
+                debug('send error: %O', error);
+                console.error(error);
+                this.emit('sendError', error);
+                return;
+            }
+            debug('status code: %o', res.statusCode);
+            if (res.statusCode !== 204) {
+                console.error(`Send failed! statusCode:${res.statusCode}`);
+                console.error(body);
+                this.emit('failed', res.statusCode);
+            } else {
+                this.emit('ok', res.statusCode);
+            }
+        });
+    }
+}
+
+module.exports = Sender;

+{
+  "name": "yoho-apm-agent",
+  "version": "0.1.12",
+  "main": "index.js",
+  "scripts": {
+    "test": "node_modules/.bin/nyc node_modules/.bin/ava",
+    "posttest": "node_modules/.bin/nyc report --reporter=html",
+    "lint": "node node_modules/eslint\bin/eslint ./*.js ./example/*.js"
+  },
+  "dependencies": {
+    "debug": "^3.0.1",
+    "lodash": "^4.17.4",
+    "request": "^2.83.0"
+  },
+  "devDependencies": {
+    "ava": "^0.15.2",
+    "eslint": "^4.4.1",
+    "eslint-config-yoho": "^1.0.1",
+    "nyc": "^11.1.0"
+  }
+}

+const test = require('ava');
+const Sender = require('../index');
+
+test.before(() => {
+    const http = require('http');
+
+    const server = http.createServer((req, res) => {
+        res.statusCode = 204;
+        res.end('');
+    });
+
+    server.listen(3003);
+});
+
+test('test normal send message', t => {
+    const sender = new Sender({
+        host: 'localhost',
+        port: 3003,
+        db: 'test',
+        measurement: 'test2'
+    });
+
+    sender.addMessage({
+        tags: {
+            a: 'a',
+            b: 'b'
+        },
+        fields: {
+            a: 'a',
+            b: 'b'
+        }
+    });
+
+    sender.on('ok', code => {
+        t.is(code, 204);
+    });
+
+});
+
+
+test('test normal send message immediately', t => {
+    const sender = new Sender({
+        host: 'localhost',
+        port: 3003,
+        db: 'test',
+        measurement: 'test2',
+        immediate: true
+    });
+
+    sender.addMessage({
+        tags: {
+            a: 'a',
+            b: 'b'
+        },
+        fields: {
+            a: 'a',
+            b: 'b'
+        }
+    });
+
+    sender.on('ok', code => {
+        t.is(code, 204);
+    });
+
+});
+
+
+test('test send json message immediately', t => {
+    const sender = new Sender({
+        host: 'localhost',
+        port: 3003,
+        db: 'test',
+        measurement: 'test2',
+        immediate: true,
+        path: '/alert'
+    });
+
+    sender.addMessage({
+        tags: {
+            a: 'a',
+            b: 'b'
+        },
+        fields: {
+            a: 'a',
+            b: 'b'
+        }
+    });
+
+    sender.on('ok', code => {
+        t.is(code, 204);
+    });
+
+});