Added filters for global envs

lib/API/schema.json

@@ -239,6 +239,15 @@
     "docDefault": false,
     "docDescription": "Start a script even if it is already running (only the script path is considered)"
   },
+  "filter_env": {
+    "type": [
+      "boolean",
+      "array",
+      "string"
+    ],
+    "docDefault": false,
+    "docDescription": "Enable filtering global environments"
+  },
   "append_env_to_name": {
     "type": "boolean",
     "docDefault": false,

lib/Common.js

@@ -187,8 +187,17 @@ Common.prepareAppConf = function(opts, app) {
   else
     env = process.env;
 
-  // Change to double check  (dropped , {pm_cwd: cwd})
-  app.env = [{}, env, app.env || {}].reduce(function(e1, e2){
+  function filterEnv(envObj){
+    let new_env = {};
+    let allowedKeys = app.filter_env.reduce((acc, current) =>
+      acc.filter( item => !item.includes(current)), Object.keys(envObj))
+    allowedKeys.forEach( key => new_env[key] = envObj[key]);
+    return new_env
+  }
+
+  app.env = [
+    {}, app.filter_env && app.filter_env.length ? filterEnv(process.env) : env, app.env || {}
+    ].reduce(function(e1, e2){
     return util._extend(e1, e2);
   });
 

lib/binaries/CLI.js

@@ -42,6 +42,7 @@ commander.version(pkg.version)
   .option('--env <environment_name>', 'specify which set of environment variables from ecosystem file must be injected')
   .option('-a --update-env', 'force an update of the environment with restart/reload (-a <=> apply)')
   .option('-f --force', 'force actions')
+  .option('--filter_env [envs]', 'filter outgoing global values by prefix', function(v, m) { m.push(v); return m;}, [])
   .option('-i --instances <number>', 'launch [number] instances (for networked app)(load balanced)')
   .option('--parallel <number>', 'number of parallel actions (for restart/reload)')
   .option('--shutdown-with-message', 'shutdown an application with process.send(\'shutdown\') instead of process.kill(pid, SIGINT)')