Manager Process

In multi-processing scenario, it's better to handle some operations in just one process, rather than repeatedly running them in all processes. If you you have all control of the master process, you can just put the code in the master process. However, you don't have control, e.g. using PM2, you need a way to find out which process should run the specific program. Such a process, I call it the Manager process.

Example

const manager = require("manager-process");

(async () => {
    var _manager = await manager.getManager();
    var processes = await manager.getAllProcesses();
    var pid = await manager.getManagerPid();
    var isManager = await manager.isManager();

    if (isManager) {
        // TODO...
    }

    // This is the same
    if (pid === process.pid) {
        // TODO...
    }

    console.log(_manager);
    // {
    //  pid: number,
    //  ppid?: number,
    //  uid?: number;
    //  gid?: number;
    //  name: string;
    //  cmd: string;
    // }

    console.log(processes);
    // Array<{
    //  pid: number,
    //  ppid?: number,
    //  uid?: number;
    //  gid?: number;
    //  name: string;
    //  cmd: string;
    // }>
})();