feat: added feature to enable/disable rotation file retain

README.md

@@ -13,6 +13,7 @@ PM2 module to automatically rotate logs of processes managed by PM2.
 
 - `max_size` (Defaults to `10M`): When a file size becomes higher than this value it will rotate it (its possible that the worker check the file after it actually pass the limit) . You can specify the unit at then end: `10G`, `10M`, `10K`
 - `retain` (Defaults to `30` file logs): This number is the number of rotated logs that are keep at any one time, it means that if you have retain = 7 you will have at most 7 rotated logs and your current one.
+- `enableRetain` (Defaults to `true`): This feature if it is equal to `false`, the` retain` function will not be used
 - `compress` (Defaults to `false`): Enable compression via gzip for all rotated logs
 - `dateFormat` (Defaults to `YYYY-MM-DD_HH-mm-ss`) : Format of the data used the name the file of log
 - `rotateModule` (Defaults to `true`) : Rotate the log of pm2's module like other apps

app.js

@@ -40,6 +40,7 @@ var WORKER_INTERVAL = isNaN(parseInt(conf.workerInterval)) ? 30 * 1000 :
 var SIZE_LIMIT = get_limit_size(); // default : 10MB
 var ROTATE_CRON = conf.rotateInterval || "0 0 * * *"; // default : every day at midnight
 var RETAIN = isNaN(parseInt(conf.retain)) ? undefined : parseInt(conf.retain); // All
+var ENABLE_RETAIN = JSON.parse(conf.enableRetain) || true;
 var COMPRESSION = JSON.parse(conf.compress) || false; // Do not compress by default
 var DATE_FORMAT = conf.dateFormat || 'YYYY-MM-DD_HH-mm-ss';
 var TZ = conf.TZ;
@@ -140,7 +141,7 @@ function proceed(file) {
       if (err) return pmx.notify(err);
       console.log('"' + final_name + '" has been created');
 
-      if (typeof(RETAIN) === 'number') 
+      if (ENABLE_RETAIN === true && typeof(RETAIN) === 'number')
         delete_old(file);
     });
   });

package.json

@@ -33,6 +33,7 @@
   "config": {
     "max_size": "10M",
     "retain": "30",
+    "enableRetain": true,
     "compress": false,
     "dateFormat": "YYYY-MM-DD_HH-mm-ss",
     "workerInterval": "30",