X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=liblttng-ust-java-agent%2Fjava%2Flttng-ust-agent-jul%2Forg%2Flttng%2Fust%2Fagent%2Fjul%2FLttngJulAgent.java;fp=liblttng-ust-java-agent%2Fjava%2Flttng-ust-agent-jul%2Forg%2Flttng%2Fust%2Fagent%2Fjul%2FLttngJulAgent.java;h=597ae6b3e8228a694b2cf1ac532e181705c40555;hb=68a1ef7391fb6103eba95fd350ccc61e73855d95;hp=fa92f64541b04788af12015bc3fa8d30343466d9;hpb=410d88da89c9a9e8cce20f5f9b244d23757de7d1;p=lttng-ust.git

diff --git a/liblttng-ust-java-agent/java/lttng-ust-agent-jul/org/lttng/ust/agent/jul/LttngJulAgent.java b/liblttng-ust-java-agent/java/lttng-ust-agent-jul/org/lttng/ust/agent/jul/LttngJulAgent.java
index fa92f645..597ae6b3 100644
--- a/liblttng-ust-java-agent/java/lttng-ust-agent-jul/org/lttng/ust/agent/jul/LttngJulAgent.java
+++ b/liblttng-ust-java-agent/java/lttng-ust-agent-jul/org/lttng/ust/agent/jul/LttngJulAgent.java
@@ -17,6 +17,14 @@
 
 package org.lttng.ust.agent.jul;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Handler;
+import java.util.logging.LogManager;
+import java.util.logging.Logger;
+
 import org.lttng.ust.agent.AbstractLttngAgent;
 
 /**
@@ -39,4 +47,39 @@ class LttngJulAgent extends AbstractLttngAgent<LttngLogHandler> {
 		return instance;
 	}
 
+	@Override
+	public Collection<String> listAvailableEvents() {
+		List<String> ret = new ArrayList<String>();
+
+		List<String> loggersNames = Collections.list(LogManager.getLogManager().getLoggerNames());
+		for (String name : loggersNames) {
+			/*
+			 * Skip the root logger. An empty string is not a valid event name
+			 * in LTTng.
+			 */
+			if (name.equals("")) {
+				continue;
+			}
+
+			/*
+			 * Check if that logger has at least one LTTng JUL handler attached.
+			 */
+			Logger logger = Logger.getLogger(name);
+			if (hasLttngHandlerAttached(logger)) {
+				ret.add(name);
+			}
+		}
+
+		return ret;
+	}
+
+	private static boolean hasLttngHandlerAttached(Logger logger) {
+		for (Handler handler : logger.getHandlers()) {
+			if (handler instanceof LttngLogHandler) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 }