fennec-be/src/pipeline-tasks/runners/deploy-by-pm2/deploy-by-pm2.service.ts
2021-09-08 23:04:11 +08:00

99 lines
3.0 KiB
TypeScript

import { InjectPinoLogger, PinoLogger } from 'nestjs-pino';
import { Injectable } from '@nestjs/common';
import { promisify } from 'util';
import * as pm2 from 'pm2';
import { Proc, ProcessDescription, StartOptions } from 'pm2';
import { clone, last } from 'ramda';
@Injectable()
export class DeployByPm2Service {
constructor(
@InjectPinoLogger(DeployByPm2Service.name)
private readonly logger: PinoLogger,
) {}
async deploy(filePath: string, workspace: string) {
const baseConfig: { apps: StartOptions[] } = await import(filePath);
const appOptionsList: StartOptions[] = clone(baseConfig.apps);
await promisify<void>(pm2.connect.bind(pm2))();
const allApps = await promisify(pm2.list.bind(pm2))();
try {
if (!Array.isArray(baseConfig.apps)) {
this.logger.error(
'the "apps" in the PM2 ecosystem configuration is not array',
);
throw new Error('apps is not array');
}
const oldApps = this.filterOldApps(appOptionsList, allApps);
this.replaceAppName(appOptionsList, oldApps);
for (const appOptions of appOptionsList) {
const proc = await promisify<StartOptions, Proc>(pm2.start.bind(pm2))({
...appOptions,
cwd: workspace,
});
this.logger.info({ proc }, `start ${appOptions.name}`);
}
await this.stopApps(oldApps);
} catch (err) {
await this.stopApps(appOptionsList);
throw err;
} finally {
pm2.disconnect();
}
}
private async stopApps(apps: ProcessDescription[] | StartOptions[]) {
await Promise.all(
apps.map(async (app: ProcessDescription | StartOptions) => {
let procAtStop: ProcessDescription;
let procAtDelete: ProcessDescription;
try {
const idOrName = 'pm_id' in app ? app.pm_id : app.name;
procAtStop = await promisify(pm2.stop.bind(pm2))(idOrName);
procAtDelete = await promisify(pm2.delete.bind(pm2))(idOrName);
this.logger.info('stop & delete %s success', app.name);
} catch (error) {
this.logger.error(
{ error, procAtStop, procAtDelete },
'stop & delete %s error',
app.name,
);
}
}),
);
}
private replaceAppName(
optionsList: StartOptions[],
oldApps: ProcessDescription[],
) {
const appSn = this.getAppsSn(oldApps);
optionsList.forEach((options) => {
if (!options.name) {
this.logger.error('please give a name for application');
throw new Error('app name is not given');
}
options.name = `${options.name}#${appSn}`;
});
}
private filterOldApps(
optionsList: StartOptions[],
apps: ProcessDescription[],
) {
return apps.filter((app) =>
optionsList.some((options) => app.name.split('#')[0] === options.name),
);
}
private getAppsSn(oldApps: ProcessDescription[]) {
const appsSn: number[] = oldApps.map(
(app) => +(app.name.split('#')?.[1] ?? 0),
);
return (last(appsSn.sort()) ?? 0) + 1;
}
}