fullstack-star · GGXXMM · Jul 21, 2019 · Jul 22, 2019
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,7 @@
+/node_modules
+/npm-debug.log
+.DS_Store
+.todo.md
+.idea/**
+.vscode/
+package-lock.json
diff --git a/app.js b/app.js
@@ -0,0 +1,46 @@
+
+var os = require("os");
+var exec = require('child_process').exec;
+var express = require('express');
+var app = express();
+
+var progressList = [];
+
+app.get('/', function(req, res){
+    res.sendFile(__dirname + '/index.html')
+})
+
+app.get('/device',function(req, res){
+    res.send({
+        cpus: os.cpus(),
+        memory: os.totalmem(),
+        process: progressList
+    })
+})
+
+app.listen(8087,function(){
+    console.log('Server listen on 8087!')
+})
+
+const cmd = process.platform == 'win32' ? 'tasklist' : 'ps aux';
+
+exec(cmd, function(error, stdout, stderr){
+    if(error){
+        console.log(`执行的错误：${error}`)
+        return;
+    }
+    stdout.split('\n').filter(function(line) {
+        let p = line.trim().split(/\s+/),
+          user = p[0],
+          pid = p[1],
+          pmem = p[4];
+
+        if (Number(pid) > 0) {
+          progressList.push([user, pid, pmem]);
+        }
+    });
+    progressList.sort(function(a, b) {
+        return Number(b[2]) - Number(a[2]);
+    });
+    console.log(`stderr: ${stderr}`);
+})
diff --git a/bin/hotloader b/bin/hotloader
@@ -0,0 +1,47 @@
+var fs = require('fs');
+var path = require("path");
+var spawn = require('child_process').spawn;
+
+class HotLoader {
+    constructor(args, extName, launcher) {
+        this.args = args;
+        this.extName = extName;
+        this.launcher = launcher;
+        this.passedArguments = this.args.slice(2);
+    }
+    run(){
+        fs.watch(
+            path.join(process.cwd(), this.passedArguments[0]),
+            (event, filename) => {
+              this.restartProcess();
+            }
+        );
+        return this.startProgress();
+    }
+    startProgress() {
+        console.log('文件启动===')
+        this.process = spawn(this.launcher, this.passedArguments, {
+            env: process.env
+        });
+        this.process.stdout.on("data", data => {
+            console.log(data.toString());
+        });
+        this.process.stderr.on("data", function(data) {
+            const errmessage = '----error----'+ data.toString();
+            console.log(errmessage)
+        });
+    }
+    restartProcess() {
+        if (this.process !== null) {
+            try {
+                this.process.kill("SIGKILL");
+            } catch (error) {
+                console.log("Exception: " + error.message, "bad");
+            }
+        }
+        console.log('文件重启====')
+        this.startProgress();
+    }
+}
+
+module.exports = HotLoader;
diff --git a/bin/hotnode b/bin/hotnode
@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+var HotLoader, VERSION, args, loader, path;
+path = require('path');
+HotLoader = require('./hotloader');
+VERSION = "0.0.1";
+args = process.argv;
+if (args.length > 2) {
+  if (args[2] === "-v" || args[2] === "--version") {
+    console.log("v" + VERSION);
+  } else {
+    loader = new HotLoader(args, 'js', 'node');
+    loader.run();
+  }
+} else {
+  console.log("\nHotnode - Hot node is watching script for Nodejs\n");
+  console.log("Usage:");
+  console.log("hotcoffee [options] script.coffee [arguments] ");
+  console.log("Hotnode arguments:")
+  console.log(" -v=[--version]      View version number of Hotnode")
+  console.log(" *.js                Watch script Updates")
+}
diff --git a/index.html b/index.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>查看服务器的CPU、内存</title>
+</head>
+<body>
+    <h2>Server progress is starting！</h2>
+    <script>
+        fetch('/device')
+        .then((response) => response.json())
+        .then((data) => console.log(data))
+        .catch((e) => console.error( e));
+    </script>
+</body>
+</html>
diff --git a/package.json b/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "homework-nodejs",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "hotnode": "node bin/hotnode",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/GGXXMM/homework-nodejs.git"
+  },
+  "author": "guoxinming",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/GGXXMM/homework-nodejs/issues"
+  },
+  "homepage": "https://github.com/GGXXMM/homework-nodejs#readme",
+  "dependencies": {
+    "express": "^4.17.1"
+  }
+}
diff --git a/result/hotnode.png b/result/hotnode.png
diff --git a/result/查看服务器的CPU和进程.png b/result/查看服务器的CPU和进程.png