From b54e39e86a8a2c5a17990eff8682e11fe8be403d Mon Sep 17 00:00:00 2001
From: Steve Krenek <steve.krenek@gmail.com>
Date: Thu, 24 Jul 2014 15:48:14 -0500
Subject: [PATCH] Enable heap dump by sending a USR2 kill signal.

---
 .gitignore     |  1 +
 lib/feather.js | 49 +++++++++++++++++++++++++++----------------------
 2 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/.gitignore b/.gitignore
index 987bb97..4656f03 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@ __restProxy.js
 *.swp
 *.lock-wscript
 *.wafpickle-7
+**/*.gz
diff --git a/lib/feather.js b/lib/feather.js
index d031230..44b5d21 100755
--- a/lib/feather.js
+++ b/lib/feather.js
@@ -25,7 +25,8 @@ var simpleId = require("./simple-id"),
     fs = require("fs"),
     nodePath = require('path'),
     Parser = require('./parser'),
-    Promise = require('./promise').Promise;
+    Promise = require('./promise').Promise,
+    heapdump = require('heapdump');
 
 /**
  * @namespace serves as the root namespace for the entire framework
@@ -45,7 +46,7 @@ var feather = module.exports = /** @lends feather */ {
 
   /**
    * Uses ns to get a config value at a path (or null if path not found)
-   * 
+   *
    */
   config: function(path) {
     return feather.ns(path, feather.appOptions, true);
@@ -61,7 +62,7 @@ var feather = module.exports = /** @lends feather */ {
    */
   mkdirpSync: util.mkdirpSync,
 
-  /** 
+  /**
    * Parse signed cookies the way connect does.  Convenience pass-through method.
    */
   parseSignedCookie: util.parseSignedCookie,
@@ -72,23 +73,23 @@ var feather = module.exports = /** @lends feather */ {
   parseSignedSessionId: function(signedSessionId) {
     return util.parseSignedCookie(cookie, feather.appOptions.connect.session.secret);
   },
-  
+
   /**
    * Flyweight empty Function
    * @memberOf feather
    */
   emptyFn: function() {},
-  
+
   /**
    * Flyweight empty Object
    */
   emptyObj: {},
-  
+
   /**
    * Flyweight empty String
    */
   emptyString: "",
-  
+
   /**
    * Flyweight empty Array
    */
@@ -115,12 +116,12 @@ var feather = module.exports = /** @lends feather */ {
     options.appRoot = options.appRoot || __dirname;
     options.publicRoot = options.publicRoot || nodePath.join(options.appRoot, "public");
     options.port = options.port || 8080;
-    
+
     //store a read-only copy of options in cache so that other modules
     //can inspect original options reliably
     var cacheToken = uuid();
     cache.setItemReadOnly("feather-options", options, cacheToken);
-    //store an unprotected copy for convenience 
+    //store an unprotected copy for convenience
     feather.appOptions = options;
 
     //add a getter that wraps feather.config for cases where we're passing options into modules that don't see feather object...
@@ -160,7 +161,7 @@ var feather = module.exports = /** @lends feather */ {
                   this.onceState("ready", function() {
                     process.on('SIGINT', feather.shutdown);
                     process.on('SIGTERM', feather.shutdown);
-                  });          
+                  });
                   //go right to the "loading state" since that is exactly what we're doing at the time this instance is created
                   return this.states.loading;
                 }
@@ -199,7 +200,7 @@ var feather = module.exports = /** @lends feather */ {
           }
           cache.setItem("feather-logger", feather.logger);
 
-          //handle uncaught exceptions              
+          //handle uncaught exceptions
           process.on("uncaughtException", function(err) {
             var message = err;
             if (err.stack) {
@@ -317,12 +318,12 @@ var feather = module.exports = /** @lends feather */ {
           }
         }
       }
-    });    
+    });
+
+
 
-    
-    
   },
-  
+
   /**
    * Shuts down the server cleanly, but not before it is ready for requests.
    */
@@ -358,7 +359,7 @@ var feather = module.exports = /** @lends feather */ {
       feather.logger.error({message:"feather server cannot shut down.  feather.stateMachine is undefined", category:"feather.server", immediately:true});
     }
   }, // end shutdown.
-  
+
   /**
    * This function is used to start the feather engine.
    */
@@ -367,13 +368,17 @@ var feather = module.exports = /** @lends feather */ {
 
     if (options.heapdump) {
       this.heapTimer = setInterval(function() {
-        require('heapdump').writeSnapshot('logs/' + new Date().toISOString().replace(/[:\.]/g, '-') + '.heapsnapshot');
+        heapdump.writeSnapshot('logs/' + new Date().toISOString().replace(/[:\.]/g, '-') + '.heapsnapshot');
       }, parseInt(options.heapdump) * 1000);
     }
-    
+
     feather.init(options, cb);
   },
 
+  heapDump: function() {
+    heapdump.writeSnapshot('logs/' + new Date().toISOString().replace(/[:\.]/g, '-') + '.heapsnapshot');
+  },
+
   /**
    * @namespace Root namespace for data class definitions and services
    * @name feather.data
@@ -421,15 +426,15 @@ var feather = module.exports = /** @lends feather */ {
    * @namespace Root namespace for Finite State Machine class definitions and services
    * @name feather.fsm
    */
-  fsm: {    
+  fsm: {
     /**
      *  Framework access to {@link FiniteStateMachine} class.
-     */ 
+     */
     FiniteStateMachine: FSM
-  }, 
+  },
 
   event: {
-    EventPublisher: EventPublisher,    
+    EventPublisher: EventPublisher,
     RedisEventPublisher: RedisEventPublisher
   },