From 78f5df75831fe55bd66fa8e9dea6cdda5dcd4c6e Mon Sep 17 00:00:00 2001
From: Evan Tahler <evantahler@gmail.com>
Date: Mon, 30 Jan 2012 19:52:32 -0800
Subject: [PATCH] cache logs to disc and reads in on boot

---
 config.json               |  2 +-
 initializers/initCache.js | 11 +++++++++++
 package.json              |  2 +-
 tasks.js                  | 25 +++++++++++++++++++++++++
 versions.markdown         |  8 ++++++++
 5 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/config.json b/config.json
index ad2f31b93..53afa61d0 100755
--- a/config.json
+++ b/config.json
@@ -1,5 +1,5 @@
 { 
-    "apiVerson" : "0.2.2",
+    "apiVerson" : "0.2.3",
 	"webServerPort" : 8080,
 	"socketServerPort" : 5000,
 	"serverName" : "actionHero API",
diff --git a/initializers/initCache.js b/initializers/initCache.js
index 21ae76107..94a0fdb87 100644
--- a/initializers/initCache.js
+++ b/initializers/initCache.js
@@ -54,6 +54,17 @@ var initCache = function(api, next){
 		}
 	};
 	
+	// check for an existing cache file
+	try{
+		var fileData = api.fs.readFileSync(api.configData.logFolder + "/cache.json",'utf8');
+		api.cache.data = JSON.parse(fileData);
+		api.log("data cache from backup file.");
+	}catch(e){
+		api.log("no cache backup file found, continuing.");
+		// api.log(" > "+e);
+	}
+	
+	
 	next();
 }
 
diff --git a/package.json b/package.json
index 7188339f4..8ee36e9aa 100755
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "author": "Evan Tahler <evantahler@gmail.com>",
   "name": "actionHero",
   "description": "actionHero is a minimalist, multi-node, transactional API framework written in javaScript",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "homepage": "https://github.com/evantahler/actionHero",
   "repository": {
     "type": "git",
diff --git a/tasks.js b/tasks.js
index 0bd282823..995dbb1b3 100755
--- a/tasks.js
+++ b/tasks.js
@@ -99,6 +99,31 @@ tasks.caclculateStats = function(api, next) {
 	process.nextTick(function () { task.run() });
 };
 
+////////////////////////////////////////////////////////////////////////////
+// perioducally save cache to disc
+tasks.saveCacheToDisk = function(api, next) {
+	var params = {
+		"name" : "saveCacheToDisk",
+		"desc" : "I will save the cache object, api.cache.data, to disc every so often"
+	};
+	var task = Object.create(api.tasks.Task);
+	task.init(api, params, next);
+	task.run = function() {
+		try{
+			var fs = api.fs.createWriteStream((api.configData.logFolder + "/cache.json"), {flags:"w"})
+			var encodedData = new Buffer(JSON.stringify(api.cache.data)).toString('utf8')
+			fs.write(encodedData);
+			fs.end();
+			task.end();
+		}catch(e){
+			api.log("Error writing to datalogFolder file: " + e, "red");
+			task.end();
+		}
+	};
+	//
+	process.nextTick(function () { task.run() });
+};
+
 ////////////////////////////////////////////////////////////////////////////
 // Export
 exports.tasks = tasks;
\ No newline at end of file
diff --git a/versions.markdown b/versions.markdown
index 6b8d462b9..2e14c791b 100644
--- a/versions.markdown
+++ b/versions.markdown
@@ -1,5 +1,13 @@
 # Action Hero API Versions
 
+## Version 0.2.3
+
+**Summary:** This is a general cleanup release
+
+**Details:**
+
+* The cache will now write its contents to disc periodically, as defined by the  `tasks.saveCacheToDisk` task.  The api will also attempt to load in a cache file on boot.
+
 ## Version 0.2.2
 
 **Summary:** This release adds additional functionality to the actionCluster and Cache