node 修改檔案自啟動
阿新 • • 發佈：2018-12-06
forever vs supervisor
forever https://github.com/foreverjs/forever
1、安裝
cnpm install forever -g2、
[email protected]:~/mygithub/node_Package/koa$ forever -help
help: usage: forever [action] [options] SCRIPT [script-options]
help:
help: Monitors the script specified in the current process 3、我發線在改node
// 改模版裡面的東西重新整理可以得到最新的東西，但是改node server裡面的東西還是無效
const fs = require('fs.promised');
const Koa = require('koa');
const app = new Koa();
const main = async function (ctx, next) {
ctx.response.type = 'html';
ctx.response.body = await fs.readFile('./server/template/template.html', 'utf8');
};
app.use(main);
app.listen(3000);supervisor
1、
cnpm install supervisor -g 2、
[email protected]:~/mygithub/node_Package/koa$ supervisor -help
Node Supervisor is used to restart programs when they crash.
It can also be used to restart programs when a *.js file changes.
Usage:
supervisor [options] <program>
supervisor [options] -- <program> [args ...]
Required:
<program>
The program to run.
Options:
-w|--watch <watchItems>
A comma-delimited list of folders or js files to watch for changes.
When a change to a js file occurs, reload the program
Default is '.'
-i|--ignore <ignoreItems>
A comma-delimited list of folders to ignore for changes.
No default
--ignore-symlinks
Enable symbolic links ignoring when looking for files to watch.
-p|--poll-interval <milliseconds>
How often to poll watched files for changes.
Defaults to Node default.
-e|--extensions <extensions>
Specific file extensions to watch in addition to defaults.
Used when --watch option includes folders
Default is 'node,js'
-x|--exec <executable>
The executable that runs the specified program.
Default is 'node'
--debug[=port]
Start node with --debug flag.
--debug-brk[=port]
Start node with --debug-brk[=port] flag.
--harmony
Start node with --harmony flag.
--inspect
Start node with --inspect flag.
--harmony_default_parameters
Start node with --harmony_default_parameters flag.
-n|--no-restart-on error|exit
Don't automatically restart the supervised program if it ends.
Supervisor will wait for a change in the source files.
If "error", an exit code of 0 will still restart.
If "exit", no restart regardless of exit code.
If "success", no restart only if exit code is 0.
-t|--non-interactive
Disable interactive capacity.
With this option, supervisor won't listen to stdin.
-k|--instant-kill
use SIGKILL (-9) to terminate child instead of the more gentle SIGTERM.
--force-watch
Use fs.watch instead of fs.watchFile.
This may be useful if you see a high cpu load on a windows machine.
-s|--timestamp
Log timestamp after each run.
Make it easy to tell when the task last ran.
-h|--help|-?
Display these usage instructions.
-q|--quiet
Suppress DEBUG messages
-V|--verbose
Show extra DEBUG messages
Options available after start:
rs - restart process.
Useful for restarting supervisor eaven if no file has changed.
Examples:
supervisor myapp.js
supervisor myapp.coffee
supervisor -w scripts -e myext -x myrunner myapp
supervisor -- server.js -h host -p port二者比較，
1、就實際操作，感覺還是supervisor好用，並且即使改變的是node server中程式碼也能實現重新整理後得到新的結果
const Koa = require('koa');
const compose = require('koa-compose');
const app = new Koa();
const logger = (ctx, next) => {
console.log(`${Date.now()} ${ctx.request.method} ${ctx.request.url}`);
next();
}
const main = ctx => {
ctx.response.body = 'Hello saa World';
};
const middlewares = compose([logger, main]);
app.use(middlewares);
app.listen(3000);2、forever 在win 小出現了問題，在mac上面改變server程式碼，重新整理頁面，得到的資料還是舊的，supervisor完好
3、啟動後 forever start ….. 完後，就啟動了不能使用ctrl + c 停止，只能用命令 forever stop ….，supervisor可以使用ctrl + c 停止
開發的時候建議使用 supervisor,至於線上，如果害怕手賤一不注意把服務關掉就用forever
參考： https://blog.csdn.net/aerchi/article/details/73650296?locationNum=5&fps=1