Merge lp:~dobey/unity-scope-click/add-cache into lp:unity-scope-click

[dobey]

Add support for caching of the REST responses to the scope.

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FAILED: Continuous integration, rev:58
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review: Needs Fixing (continuous-integration)

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PASSED: Continuous integration, rev:58
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review: Approve (continuous-integration)

[Alejandro J. Cura (alecu)]

Branch looks good. 128mb cache for this sounds huge, I think 8 or 16mb should be plenty.

review: Approve

[lp:~dobey/unity-scope-click/add-cache]

59. By dobey on 2013-09-27

Make the cache size 16 MiB max.

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PASSED: Continuous integration, rev:59
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Executed test runs:
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=== modified file 'src/click-webservice.vala'
--- src/click-webservice.vala	2013-09-23 23:00:12 +0000
+++ src/click-webservice.vala	2013-09-27 19:27:48 +0000
@@ -32,6 +32,12 @@
 const string JSON_FIELD_DESCRIPTION = "description";
 const string JSON_FIELD_KEYWORDS = "keywords";
 
+// The size of the cache for click app data
+// == SIZE_IN_MB * 1024 * 1024
+const uint CACHE_SIZE_MB = 16;
+const uint CACHE_SIZE_BYTES = CACHE_SIZE_MB * 1024 * 1024;
+
+
 errordomain WebserviceError {
     HTTP_ERROR,
     JSON_ERROR
@@ -195,15 +201,31 @@
 
 class WebClient : GLib.Object {
     static Soup.SessionAsync http_session = null;
+    static Soup.Cache cache = null;
     private const string USER_AGENT = "UnityScopeClick/0.1 (libsoup)";
 
     public static Soup.SessionAsync get_webclient () {
         if (http_session == null) {
             http_session = new Soup.SessionAsync ();
             http_session.user_agent = USER_AGENT;
+
+            var cache_obj = get_cache ();
+            http_session.add_feature (cache_obj);
         }
         return http_session;
     }
+
+    public static Soup.Cache get_cache () {
+        if (cache == null) {
+            string cache_dir = GLib.Path.build_path (GLib.Path.DIR_SEPARATOR_S,
+                                                     GLib.Environment.get_user_cache_dir (),
+                                                     "com.ubuntu.unity-scope-click");
+            cache = new Soup.Cache(cache_dir, Soup.CacheType.SINGLE_USER);
+            cache.set_max_size (CACHE_SIZE_BYTES);
+            cache.load ();
+        }
+        return cache;
+	}
 }
 
 class ClickWebservice : GLib.Object