Improved the admin's interface

ConfigurationDB/CheckConfiguration.go

@@ -16,7 +16,7 @@ func checkConfiguration() {
 	CheckSingleConfigurationPresentsAndAddIfMissing(`AdminWebServerEnabled`, `True`)
 	CheckSingleConfigurationPresentsAndAddIfMissing(`AdminWebServerReadTimeoutSeconds`, `10`)
 	CheckSingleConfigurationPresentsAndAddIfMissing(`AdminWebServerWriteTimeoutSeconds`, `10`)
-	CheckSingleConfigurationPresentsAndAddIfMissing(`AdminWebServerMaxHeaderLenBytes`, `1048576`)
+	CheckSingleConfigurationPresentsAndAddIfMissing(`AdminWebServerMaxHeaderLenBytes`, `10485760`)
 	CheckSingleConfigurationPresentsAndAddIfMissing(`PublicWebServerPort`, `50000`)
 	CheckSingleConfigurationPresentsAndAddIfMissing(`PublicWebServerReadTimeoutSeconds`, `10`)
 	CheckSingleConfigurationPresentsAndAddIfMissing(`PublicWebServerWriteTimeoutSeconds`, `10`)

ConfigurationDB/ReadAll.go

@@ -0,0 +1,16 @@
+package ConfigurationDB
+
+import (
+	"github.com/SommerEngineering/Ocean/Log"
+	LM "github.com/SommerEngineering/Ocean/Log/Meta"
+	"gopkg.in/mgo.v2/bson"
+)
+
+// This function reads all configuration values e.g. for the admin's configuration web interface.
+func ReadAll() (values []ConfigurationDBEntry) {
+	if errFind := collection.Find(bson.D{}).All(&values); errFind != nil {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameDATABASE, `Was not able to read all configuration values out of the database.`, `Error while find.`, errFind.Error())
+	}
+
+	return
+}

ConfigurationDB/UpdateValue.go

@@ -0,0 +1,47 @@
+package ConfigurationDB
+
+import (
+	"github.com/SommerEngineering/Ocean/Log"
+	LM "github.com/SommerEngineering/Ocean/Log/Meta"
+	"gopkg.in/mgo.v2/bson"
+)
+
+// This function updates a configuration value e.g. from the admin's configuration web interface.
+func UpdateValue(name string, configuration ConfigurationDBEntry) {
+
+	// Check the configuration's name:
+	if name == `` {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameSTATE, `Was not able to update a configuration value.`, `The given name was nil!`)
+		return
+	}
+
+	// Ensure, that the configuration is already present:
+	if count, errFind := collection.Find(bson.D{{"Name", name}}).Count(); errFind != nil {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameDATABASE, `Was not able to update a configuration value.`, `Error while find the old value.`, errFind.Error())
+		return
+	} else {
+		// Is the configuration already present?
+		if count == 0 {
+			Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameSTATE, `Was not able to update a configuration value.`, `The desired configuration is not present.`)
+			return
+		}
+	}
+
+	// Ensure, that the configuration value also uses the same name:
+	if name != configuration.Name {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameSTATE, `Was not able to update a configuration value.`, `The given name was different with the name of the desired configuration value.`)
+		return
+	}
+
+	//
+	// Case: Any precondition is fulfilled
+	//
+
+	// Selection of the correct configuration (the name is a unique value):
+	selector := bson.D{{"Name", name}}
+	if errUpdate := collection.Update(selector, configuration); errUpdate != nil {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNameDATABASE, `Was not able to update a configuration value.`, `Error while updating the database.`, errUpdate.Error())
+	}
+
+	return
+}