[banshee] [Banshee.Metrics] Add static Started/Stopped events

[Gabriel Burt <gburt src gnome org>]

commit 87f80a4697550705a313b43d11f92f7676ce2210
Author: Gabriel Burt <gabriel burt gmail com>
Date:   Fri Feb 12 13:56:08 2010 -0800

    [Banshee.Metrics] Add static Started/Stopped events
    
    Allows code elsewhere to add metrics when appropriate.

 .../Banshee.Metrics/BansheeMetrics.cs              |   34 +++++++++++++++----
 1 files changed, 27 insertions(+), 7 deletions(-)
---
diff --git a/src/Core/Banshee.Services/Banshee.Metrics/BansheeMetrics.cs b/src/Core/Banshee.Services/Banshee.Metrics/BansheeMetrics.cs
index 13defe3..ac8685f 100644
--- a/src/Core/Banshee.Services/Banshee.Metrics/BansheeMetrics.cs
+++ b/src/Core/Banshee.Services/Banshee.Metrics/BansheeMetrics.cs
@@ -42,8 +42,12 @@ namespace Banshee.Metrics
     public class BansheeMetrics : IDisposable
     {
         private static BansheeMetrics banshee_metrics;
+
         public BansheeMetrics Instance { get { return banshee_metrics; } }
 
+        public static event System.Action Started;
+        public static event System.Action Stopped;
+
         public static void Start ()
         {
             Log.Information ("Starting collection of anonymous usage data");
@@ -69,7 +73,7 @@ namespace Banshee.Metrics
         private MetricsCollection metrics;
         private string id_key = "AnonymousUsageData.Userid";
 
-        private Metric shutdown, duration, source_changed;
+        private Metric shutdown, duration, source_changed, sqlite_executed;
 
         private BansheeMetrics ()
         {
@@ -98,6 +102,11 @@ namespace Banshee.Metrics
             metrics.AddDefaults ();
             AddMetrics ();
 
+            var handler = Started;
+            if (handler != null) {
+                handler ();
+            }
+
             // TODO schedule sending the data to the server in some timeout?
 
             // TODO remove this, just for testing
@@ -150,7 +159,10 @@ namespace Banshee.Metrics
             duration = Add ("RunDuration", () => DateTime.Now - ApplicationContext.StartedAt, true);
             Application.ShutdownRequested += OnShutdownRequested;
 
-            // TODO add Mono.Addins extension point for metric providers?
+            sqlite_executed = Add ("LongSqliteCommand", null, true);
+            HyenaSqliteCommand.CommandExecuted += OnSqliteCommandExecuted;
+            HyenaSqliteCommand.RaiseCommandExecuted = true;
+            HyenaSqliteCommand.RaiseCommandExecutedThresholdMs = 400;
         }
 
         public Metric Add (string name, Func<object> func)
@@ -165,9 +177,15 @@ namespace Banshee.Metrics
 
         public void Dispose ()
         {
+            var handler = Stopped;
+            if (handler != null) {
+                handler ();
+            }
+
             // Disconnect from events we're listening to
             ServiceManager.SourceManager.ActiveSourceChanged -= OnActiveSourceChanged;
             Application.ShutdownRequested -= OnShutdownRequested;
+            HyenaSqliteCommand.CommandExecuted -= OnSqliteCommandExecuted;
 
             // Delete any collected data
             metrics.Store.Clear ();
@@ -187,14 +205,16 @@ namespace Banshee.Metrics
 
         private bool OnShutdownRequested ()
         {
-            try {
-                shutdown.TakeSample ();
-                duration.TakeSample ();
-            } catch {}
-
+            shutdown.TakeSample ();
+            duration.TakeSample ();
             return true;
         }
 
+        private void OnSqliteCommandExecuted (object o, CommandExecutedArgs args)
+        {
+            sqlite_executed.PushSample (String.Format ("{0}ms -- {1}", args.Ms, args.Sql));
+        }
+
         #endregion
 
         public static SchemaEntry<bool> EnableCollection = new SchemaEntry<bool> (