diff --git a/src/utils/dependencyChecker.ts b/src/utils/dependencyChecker.ts new file mode 100644 index 0000000000..2036ebe369 --- /dev/null +++ b/src/utils/dependencyChecker.ts @@ -0,0 +1,38 @@ +import Logger from './logger'; +import { exec } from 'shelljs'; + +export default class DependencyChecker { + logger: Logger; + + constructor() { + this.logger = new Logger('Deps'); + } + + checkAll(): void { + this.logger.info('Checking started'); + this.check('Node.js', 'node -v', x => x.match(/^v(.*)\r?\n$/)); + this.check('npm', 'npm -v', x => x.match(/^(.*)\r?\n$/)); + this.check('MongoDB', 'mongo --version', x => x.match(/^MongoDB shell version: (.*)\r?\n$/)); + this.check('Redis', 'redis-server --version', x => x.match(/v=([0-9\.]*)/)); + this.logger.info('Checking finished'); + } + + check(serviceName: string, command: string, transform: (x: string) => RegExpMatchArray): void { + const code = { + success: 0, + notFound: 127 + }; + const x = exec(command, { silent: true }) as any; + if (x.code === code.success) { + let ver = transform(x.stdout); + if (ver != null) { + this.logger.info(`${serviceName} ${ver[1]} found`); + } else { + this.logger.warn(`${serviceName} not found`); + this.logger.warn(`Regexp used for version check of ${serviceName} is probably messed up`); + } + } else if (x.code === code.notFound) { + this.logger.warn(`${serviceName} not found`); + } + } +}