smartexit/ts/index.ts
2021-07-27 14:56:02 +02:00

83 lines
2.4 KiB
TypeScript

import * as plugins from './smartexit.plugins';
export class SmartExit {
public processesToEnd = new plugins.lik.ObjectMap<plugins.childProcess.ChildProcess>();
public cleanupFunctions = new plugins.lik.ObjectMap<() => Promise<any>>();
/**
* adds a process to be exited
* @param childProcessArg
*/
public addProcess(childProcessArg: plugins.childProcess.ChildProcess) {
this.processesToEnd.add(childProcessArg);
}
public addCleanupFunction(cleanupFunctionArg: () => Promise<any>) {
this.cleanupFunctions.add(cleanupFunctionArg);
}
/**
* removes a process to be exited
*/
public removeProcess(childProcessArg: plugins.childProcess.ChildProcess) {
this.processesToEnd.remove(childProcessArg);
}
public async killAll() {
console.log('Checking for remaining child processes before exit...');
if (this.processesToEnd.getArray().length > 0) {
console.log('found remaining child processes');
let counter = 1;
this.processesToEnd.forEach(async (childProcessArg) => {
const pid = childProcessArg.pid;
console.log(`killing process #${counter} with pid ${pid}`);
plugins.smartdelay.delayFor(10000).then(() => {
if (childProcessArg.killed) {
return;
}
process.kill(pid, 'SIGKILL');
});
process.kill(pid, 'SIGINT');
counter++;
});
} else {
console.log(`ChildProcesses look clean.`);
}
if (this.cleanupFunctions.getArray.length > 0) {
this.cleanupFunctions.forEach(async cleanupFunction => {
await cleanupFunction();
})
}
console.log(`Ready to exit!`);
}
constructor() {
// do app specific cleaning before exiting
process.on('exit', async (code) => {
if (code === 0) {
console.log('Process wants to exit');
await this.killAll();
console.log('Exited ok!');
} else {
console.error('Exited NOT OK!');
}
});
// catch ctrl+c event and exit normally
process.on('SIGINT', async () => {
console.log('Ctrl-C... or SIGINT signal received!');
await this.killAll();
process.exit(0);
});
//catch uncaught exceptions, trace, then exit normally
process.on('uncaughtException', async (err) => {
console.log('SMARTEXIT: uncaught exception...');
console.log(err);
await this.killAll();
process.exit(1);
});
}
}