/
debug.js
80 lines (69 loc) · 2.3 KB
/
debug.js
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'use strict';
const cp = require('child_process');
const chalk = require('chalk');
const InspectorProxy = require('inspector-proxy');
const debug = require('debug')('egg-bin');
const semver = require('semver');
const Command = require('./dev');
const newDebugger = semver.gte(process.version, '8.0.0');
class DebugCommand extends Command {
constructor(rawArgv) {
super(rawArgv);
this.usage = 'Usage: egg-bin debug [dir] [options]';
this.options = {
// set default to empty so `--inspect` will always pass to fork
inspect: {
description: 'V8 Inspector port',
default() {
/* istanbul ignore next */
return newDebugger ? '' : undefined;
},
},
'inspect-brk': {
description: 'whether break at start',
},
debug: {
description: 'legacy debugger',
default() {
/* istanbul ignore next */
return newDebugger ? undefined : '';
},
},
proxy: {
description: 'worker debug proxy port',
default: 9999,
},
};
process.env.EGG_DEBUG = 'true';
}
get description() {
return 'Start server at local debug mode';
}
* run(context) {
const proxyPort = context.argv.proxy;
context.argv.proxy = undefined;
const eggArgs = yield this.formatArgs(context);
const options = {
execArgv: context.execArgv,
env: Object.assign({ NODE_ENV: 'development', EGG_DEBUG: true }, context.env),
};
debug('%s %j %j, %j', this.serverBin, eggArgs, options.execArgv, options.env.NODE_ENV);
// start egg
const child = cp.fork(this.serverBin, eggArgs, options);
// start debug proxy
const proxy = new InspectorProxy({ port: proxyPort });
// proxy to new worker
child.on('message', msg => {
if (msg && msg.action === 'debug' && msg.from === 'app') {
const { debugPort, pid } = msg.data;
debug(`recieve new worker#${pid} debugPort: ${debugPort}`);
proxy.start({ debugPort }).then(() => {
console.log(chalk.yellow(`Debug Proxy online, now you could attach to ${proxyPort} without worry about reload.`));
if (newDebugger) console.log(chalk.yellow(`DevTools → ${proxy.url}`));
});
}
});
child.on('exit', () => proxy.end());
}
}
module.exports = DebugCommand;