diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..40b878d --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +node_modules/ \ No newline at end of file diff --git a/Readme b/Readme deleted file mode 100644 index a57a248..0000000 --- a/Readme +++ /dev/null @@ -1 +0,0 @@ -作业 diff --git a/Readme.md b/Readme.md new file mode 100644 index 0000000..6ad28cc --- /dev/null +++ b/Readme.md @@ -0,0 +1,5 @@ +hotload： +下列所有路径为hotload所在位置的相对路径 +--file: 监听的文件改动会重新reload 这个文件 // 默认./src/app.js +--watchDir: 你想监听哪个文件夹下的文件(会递归所有文件) // 默认src +--delay: 在--delay时间内保存多次只会执行一次(ms) \ No newline at end of file diff --git a/hotload.js b/hotload.js new file mode 100644 index 0000000..a75ff07 --- /dev/null +++ b/hotload.js @@ -0,0 +1,85 @@ +const path = require('path') +const fs = require('fs') +const process = require('process') +const spawn = require('child_process').spawn +/** + * 可以接收三个参数 + * --file: 监听的文件改动会重新reload 这个文件 // 默认./src/app.js + * --watchDir: 你想监听哪个文件夹下的文件(会递归所有文件) // 默认src + * --delay: 在--delay时间内保存多次只会执行一次(ms) // 默认2000ms + */ +class MyHotLoad { + constructor() { + this.myProcess = null // 已经创建好的子进程(reload前要kill掉，否则会端口占用) + this['--watchdir'] = 'src' // 要监听的文件里js文件 + this['--file'] = './src/app.js' // 监听的文件改动reload这个文件 + this['--delay'] = 2000 // 默认两秒之内多个文件改动,最后一次改动有效 + this.timer = null + } + init() { + this.setParams() + this.exec() + this.deepDir(path.join(__dirname, this['--watchdir'])) + } + // 需要接收更多参数在p数组里添加key + // 返回类似: { '--file': './src/app.js', '--watchdir': 'src' } + setParams() { + let objKeys = Object.keys(this) + let arr = process.argv.slice(2) + arr.reduce((pre, cur) => { + if (objKeys.indexOf(pre) > -1) { + this[pre] = cur + } + }) + } + // 遍历目录: 监听src目录下所有文件改动 + deepDir(currentDir) { + fs.readdir(currentDir, (err, files) => { + if (err) {console.log(err);return} + files.forEach(file => { + fs.stat(path.join(currentDir, file), (err, stat) => { + if (err) throw err; + if (stat.isFile()) { // 文件 + this.watch(path.join(currentDir, file)) + // fileArr.push(path.join(currentDir, file)) + } else { // 目录 + this.deepDir(path.join(currentDir, file)) + } + }) + }) + }) + } + exec() { + if (this.myProcess) { // 结束掉上一个进程，因为端口相同会报错 + this.myProcess.kill('SIGKILL') + } + this.myProcess = spawn('node', [this['--file']]) + + // 捕获stdout和stderr(否则监听文件里的日志打印和报错显示不出来) + // 这里返回的是buffer + // 坑: windows下竟然执行两次 + this.myProcess.stdout.on('data', (data) => { + console.log(data.toString()) + }) + // 监听的文件出错会执行 + this.myProcess.stderr.on('data', (data) => { + console.log(`stderr: ${data}`); + }); + + // this.myProcess.kill()会触发这个事件 + this.myProcess.on('close', (err) => { + err && console.log(err) + }) + } + // 2s内修改了多个文件只会执行一次 + watch(file) { + fs.watch(file, () => { + clearTimeout(this.timer) + this.timer = setTimeout(() => { + console.log('reload...') + this.exec() + }, this['--delay']); + }) + } +} +new MyHotLoad().init() \ No newline at end of file diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..92666d6 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b/src/hotReload.png differ diff --git a/src/index.js b/src/index.js new file mode 100644 index 0000000..a5cb3ed --- /dev/null +++ b/src/index.js @@ -0,0 +1,10 @@ +const Koa = require('koa'); +const app = new Koa(); +const Router = require('koa-router'); +const routers = require('./router') + +const router = new Router(); +router.get('/device', routers.device) +app.use(router.routes()) +console.log('opend: http://localhost:3000') +app.listen(3000); \ No newline at end of file diff --git a/src/result.png b/src/result.png new file mode 100644 index 0000000..130d180 Binary files /dev/null and b/src/result.png differ diff --git a/src/router/index.js b/src/router/index.js new file mode 100644 index 0000000..1b39fee --- /dev/null +++ b/src/router/index.js @@ -0,0 +1,15 @@ +const tools = require('../tools') +const os = require('os') +module.exports.device = async function (ctx, next) { + let systemInfo = { + '系统类型': os.platform(), + 'CPU型号': os.cpus()[0].model, + '总内存': (os.totalmem() / (1024 * 1024 * 1024)).toFixed(2) + ' GB', + '空闲内存': (os.freemem() / (1024 * 1024 * 1024)).toFixed(2) + ' GB' + } + const processList = await tools.getProcessList() + ctx.body = { + systemInfo, + processList + } +} diff --git a/src/testDir/1/2/test2.js b/src/testDir/1/2/test2.js new file mode 100644 index 0000000..3949fe6 --- /dev/null +++ b/src/testDir/1/2/test2.js @@ -0,0 +1 @@ +console.log('bbg') \ No newline at end of file diff --git a/src/testDir/1/test1.js b/src/testDir/1/test1.js new file mode 100644 index 0000000..7ffbabf --- /dev/null +++ b/src/testDir/1/test1.js @@ -0,0 +1 @@ +var s='ddd' \ No newline at end of file diff --git a/src/testDir/ps.txt b/src/testDir/ps.txt new file mode 100644 index 0000000..b23f811 --- /dev/null +++ b/src/testDir/ps.txt @@ -0,0 +1,91 @@ +USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND +root 1 0.0 0.5 128028 6592 ? Ss 00:40 0:01 /usr/lib/systemd/systemd --switched-root --system --deserialize 22 +root 2 0.0 0.0 0 0 ? S 00:40 0:00 [kthreadd] +root 3 0.0 0.0 0 0 ? S 00:40 0:00 [ksoftirqd/0] +root 5 0.0 0.0 0 0 ? S< 00:40 0:00 [kworker/0:0H] +root 6 0.0 0.0 0 0 ? S 00:40 0:00 [kworker/u2:0] +root 7 0.0 0.0 0 0 ? S 00:40 0:00 [migration/0] +root 8 0.0 0.0 0 0 ? S 00:40 0:00 [rcu_bh] +root 9 0.0 0.0 0 0 ? R 00:40 0:01 [rcu_sched] +root 10 0.0 0.0 0 0 ? S< 00:40 0:00 [lru-add-drain] +root 11 0.0 0.0 0 0 ? S 00:40 0:00 [watchdog/0] +root 13 0.0 0.0 0 0 ? S 00:40 0:00 [kdevtmpfs] +root 14 0.0 0.0 0 0 ? S< 00:40 0:00 [netns] +root 15 0.0 0.0 0 0 ? S 00:40 0:00 [khungtaskd] +root 16 0.0 0.0 0 0 ? S< 00:40 0:00 [writeback] +root 17 0.0 0.0 0 0 ? S< 00:40 0:00 [kintegrityd] +root 18 0.0 0.0 0 0 ? S< 00:40 0:00 [bioset] +root 19 0.0 0.0 0 0 ? S< 00:40 0:00 [bioset] +root 20 0.0 0.0 0 0 ? S< 00:40 0:00 [bioset] +root 21 0.0 0.0 0 0 ? S< 00:40 0:00 [kblockd] +root 22 0.0 0.0 0 0 ? S< 00:40 0:00 [md] +root 23 0.0 0.0 0 0 ? S< 00:40 0:00 [edac-poller] +root 24 0.0 0.0 0 0 ? S< 00:40 0:00 [watchdogd] +root 30 0.0 0.0 0 0 ? S 00:40 0:00 [kswapd0] +root 31 0.0 0.0 0 0 ? SN 00:40 0:00 [ksmd] +root 32 0.0 0.0 0 0 ? SN 00:40 0:00 [khugepaged] +root 33 0.0 0.0 0 0 ? S< 00:40 0:00 [crypto] +root 41 0.0 0.0 0 0 ? S< 00:40 0:00 [kthrotld] +root 43 0.0 0.0 0 0 ? S< 00:40 0:00 [kmpath_rdacd] +root 44 0.0 0.0 0 0 ? S< 00:40 0:00 [kaluad] +root 45 0.0 0.0 0 0 ? S< 00:40 0:00 [kpsmoused] +root 46 0.0 0.0 0 0 ? S< 00:40 0:00 [ipv6_addrconf] +root 59 0.0 0.0 0 0 ? S< 00:40 0:00 [deferwq] +root 90 0.0 0.0 0 0 ? S 00:40 0:00 [kauditd] +root 720 0.0 0.0 0 0 ? S< 00:40 0:00 [hv_vmbus_con] +root 1041 0.0 0.0 0 0 ? S 00:40 0:00 [scsi_eh_0] +root 1049 0.0 0.0 0 0 ? S< 00:40 0:00 [scsi_tmf_0] +root 1058 0.0 0.0 0 0 ? S< 00:40 0:00 [storvsc_error_w] +root 1064 0.0 0.0 0 0 ? S 00:40 0:00 [kworker/u2:2] +root 1200 0.0 0.0 0 0 ? S< 00:40 0:00 [kdmflush] +root 1201 0.0 0.0 0 0 ? S< 00:40 0:00 [bioset] +root 1214 0.0 0.0 0 0 ? S< 00:40 0:00 [kdmflush] +root 1215 0.0 0.0 0 0 ? S< 00:40 0:00 [bioset] +root 1234 0.0 0.0 0 0 ? S< 00:40 0:00 [bioset] +root 1239 0.0 0.0 0 0 ? S< 00:40 0:00 [xfsalloc] +root 1244 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs_mru_cache] +root 1247 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-buf/dm-0] +root 1250 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-data/dm-0] +root 1253 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-conv/dm-0] +root 1254 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-cil/dm-0] +root 1255 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-reclaim/dm-] +root 1256 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-log/dm-0] +root 1257 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-eofblocks/d] +root 1258 0.0 0.0 0 0 ? S 00:40 0:00 [xfsaild/dm-0] +root 1259 0.0 0.0 0 0 ? S< 00:40 0:00 [kworker/0:1H] +root 1326 0.0 0.1 36816 2404 ? Ss 00:40 0:00 /usr/lib/systemd/systemd-journald +root 1347 0.0 0.4 127372 5488 ? Ss 00:40 0:00 /usr/sbin/lvmetad -f +root 1355 0.0 0.3 47444 4896 ? Ss 00:40 0:00 /usr/lib/systemd/systemd-udevd +root 1944 0.0 0.0 0 0 ? S 00:40 0:00 [hv_balloon] +root 2205 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-buf/sda2] +root 2216 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-data/sda2] +root 2220 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-conv/sda2] +root 2227 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-cil/sda2] +root 2233 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-reclaim/sda] +root 2237 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-log/sda2] +root 2245 0.0 0.0 0 0 ? S< 00:40 0:00 [xfs-eofblocks/s] +root 2274 0.0 0.0 0 0 ? S 00:40 0:00 [xfsaild/sda2] +root 2337 0.0 0.0 62044 1088 ? S { + let arr = [] + let isLiunx = os.platform() === 'linux' + if (isLiunx) { + exec('ps aux', (err, stdout, stderr) => { + stdout.split('\n').forEach(line => { + let lArr = line.split(/\s+/) + if (parseInt(lArr[1])) { + arr.push({'PID': lArr[1], 'CPU': lArr[2], 'MEM': lArr[3], 'COMMAND': lArr[10]}) + } + }) + arr.sort((a, b) => { + return b['CPU'] - a['CPU'] + }) + resolve(arr) + }) + } else { + exec('tasklist', (err, stdout, stderr) => { + if (err) throw err; + stdout.split('\n').forEach(line => { + let lArr = line.split(/\s{2}/) // '2': windows下面进程名称有空格： System Idle Process + let fArr = lArr.filter(item => item !== '') + // 过滤一些不需要的东西，比如内存占用为0的和可能发生错误的 + if (fArr[0] && fArr[1] && (fArr[3] && parseInt(fArr[3].trim()) > 0)) { + arr.push({'NAME': fArr[0], 'PID': fArr[1].trim().split(' ')[0], 'MEM': fArr[3].trim()}) + } + }); + arr.sort((a, b) => { + // 这时的内存值可能是这样：40,324 K (有逗号) + // b在前是降序，a在前是升序 + return parseInt(b['MEM'].replace(',', '')) - parseInt(a['MEM'].replace(',', '')) + }); + resolve(arr) + }) + } + }) +} \ No newline at end of file