pm2-rescue

For some reason, async javascript code would lost in limbo. Fortunately, a lot javascript programmer use PM2 to manage their app and start multi instances. However, it does not solve the problem. A app run into limbo does not means it is died while PM2 cannot restart it automatically. That's why I create pm2-rescue.

Install

npm install pm2-rescue

Usage

var PMC = require('pm2-rescue');

var pmc = new PMC({
  // Required. The absolute filepath you want to store you pid info
  filename: String,
  // Optinal. The pm_id of current process, default to be process.env.pm_id
  pm_id: String, 
  // Optinal. The number of millionseconds you think we should run rescue. 
  // default to be 2000ms
  timeout: Number, 
  // Required. The absolute path to pm2 binary file.
  pm2bin: String, 
  // Optional. The function we need to call when we run rescue, 
  // this function should return a promise with {code: Number, out: String}.
  // default to be `pm2 restart ${pm_id}`
  restart: AsyncFunction
});

Method

You should call the following two method periodically to make pm2-rescue works.

update()

write current instance status into file status file.

rescue

check the status file to see if there were any process in time-out-mode, and restart them.

License

MIT