[logback-dev] svn commit: r1741 - logback/trunk/logback-classic/src/main/java/ch/qos/logback/classic/util

[noreply.ceki at qos.ch]

Author: ceki
Date: Thu Aug  7 15:38:10 2008
New Revision: 1741

Added:
   logback/trunk/logback-classic/src/main/java/ch/qos/logback/classic/util/StatusListenerConfigHelper.java

Log:
this class was mistakenly omitted in revision 1740


Added: logback/trunk/logback-classic/src/main/java/ch/qos/logback/classic/util/StatusListenerConfigHelper.java
==============================================================================
--- (empty file)
+++ logback/trunk/logback-classic/src/main/java/ch/qos/logback/classic/util/StatusListenerConfigHelper.java	Thu Aug  7 15:38:10 2008
@@ -0,0 +1,40 @@
+package ch.qos.logback.classic.util;
+
+import ch.qos.logback.classic.LoggerContext;
+import ch.qos.logback.core.status.OnConsoleStatusListener;
+import ch.qos.logback.core.status.StatusListener;
+import ch.qos.logback.core.util.OptionHelper;
+
+public class StatusListenerConfigHelper {
+
+  final public static String STATUS_LISTENER_CLASS = "logback.statusListenerClass";
+  final public static String SYSOUT = "SYSOUT";
+
+  
+  static void installIfAsked(LoggerContext loggerContext) {
+    String slClass = System.getProperty(STATUS_LISTENER_CLASS, null);
+    if (!OptionHelper.isEmpty(slClass)) {
+      addStatusListener(loggerContext, slClass);
+    } 
+  }
+  
+  static void addStatusListener(LoggerContext loggerContext,
+      String listenerClass) {
+    StatusListener listener = null;
+    if (SYSOUT.equalsIgnoreCase(listenerClass)) {
+      listener = new OnConsoleStatusListener();
+    } else {
+      try {
+        listener = (StatusListener) OptionHelper.instantiateByClassName(
+            listenerClass, StatusListener.class, loggerContext);
+        loggerContext.getStatusManager().add(listener);
+      } catch (Exception e) {
+        // printing on the console is the best we can do
+        e.printStackTrace();
+      }
+    }
+    if (listener != null) {
+      loggerContext.getStatusManager().add(listener);
+    }
+  }
+}