Bug fixes and improvements

- Bugfix: The configuration collection can not have a key for the
values.
- Bugfix: It was possible, that the shutdown handler list was init to
late.
+ ConfigDB: It is now possible to write and therefore to change a
configuration value.
+ Added a few more message names for the logger.

ConfigurationDB/Init.go

@@ -37,7 +37,6 @@ func init() {
 
 	// Take care about the index:
 	collection.EnsureIndexKey(`Name`)
-	collection.EnsureIndexKey(`Value`)
 
 	checkConfiguration()
 	Log.LogShort(senderName, LM.CategorySYSTEM, LM.LevelINFO, LM.MessageNameDATABASE, `The configuration database is now ready.`)

ConfigurationDB/Write.go

@@ -0,0 +1,25 @@
+package ConfigurationDB
+
+import "github.com/SommerEngineering/Ocean/Log"
+import LM "github.com/SommerEngineering/Ocean/Log/Meta"
+import "labix.org/v2/mgo/bson"
+
+/*
+This function writes the configuration value.
+*/
+func Write(name, value string) {
+	if name == `` {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameDATABASE, `Was not able to write a configuration to the database.`, `The given name was nil!`)
+		return
+	}
+
+	result := ConfigurationDBEntry{}
+	if errFind := collection.Find(bson.D{{"Name", name}}).One(&result); errFind != nil {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameDATABASE, `Was not able to write a configuration to the database.`, `Error while find.`, errFind.Error())
+		return
+	}
+
+	result.Value = value
+	collection.Update(bson.D{{"Name", name}}, result)
+	return
+}