Add a Log4j 2.x Java agent

[lttng-ust.git] / doc / examples / java-log4j / Hello.java

diff --git a/doc/examples/java-log4j/Hello.java b/doc/examples/java-log4j/Hello.java
deleted file mode 100644 (file)
index e90c756..0000000
--- a/doc/examples/java-log4j/Hello.java
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2015 EfficiOS Inc.
- * Copyright (C) 2015 Alexandre Montplaisir <alexmonthy@efficios.com>
- * Copyright (C) 2014 Christian Babeux <christian.babeux@efficios.com>
- */
-
-import java.io.IOException;
-
-import org.apache.log4j.Appender;
-import org.apache.log4j.BasicConfigurator;
-import org.apache.log4j.Logger;
-import org.apache.log4j.Level;
-import org.lttng.ust.agent.log4j.LttngLogAppender;
-
-/**
- * Example application using the LTTng-UST Java log4j agent.
- *
- * <p>
- * To obtain LTTng trace events, you should run the following sequence of
- * commands:
- * </p>
- *
- * <ul>
- * <li>$ lttng create</li>
- * <li>$ lttng enable-event -l -a</li>
- * <li>$ lttng start</li>
- * <li>(run this program)</li>
- * <li>$ lttng stop</li>
- * <li>$ lttng view</li>
- * <li>$ lttng destroy</li>
- * </ul>
- *
- * @author Alexandre Montplaisir
- * @author Christian Babeux
- */
-public class Hello {
-
-       private static final Logger HELLO_LOG = Logger.getLogger(Hello.class);
-
-       /**
-        * Application start
-        *
-        * @param args
-        *            Command-line arguments
-        * @throws IOException
-        *             If the required native libraries cannot be found. You may
-        *             have to specify "-Djava.library.path=..." on the "java"
-        *             command line.
-        */
-       public static void main(String args[]) throws IOException {
-
-               /*
-                * Set lowest level to make sure all event levels are logged.
-                * Any jar can override the default log4j rootLogger level
-                * and a logger with no explicit level defaults to the non-null
-                * parent level. Events could be ignored if the inherited value
-                * is to low.
-                * e.g BSF  -> https://issues.apache.org/jira/browse/BSF-24
-                */
-               HELLO_LOG.setLevel(Level.ALL);
-
-               /* Start with the default Log4j configuration, which logs to console */
-               BasicConfigurator.configure();
-
-               /*
-                * Instantiate a LTTng log appender and attach it to the logger, which
-                * will now send the logged events to UST.
-                */
-               Appender lttngAppender = new LttngLogAppender();
-               HELLO_LOG.addAppender(lttngAppender);
-
-               /*
-                * Here we've set up the appender programmatically, but it could also be
-                * defined at runtime, by reading a configuration file for example:
-                */
-               // PropertyConfigurator.configure(fileName);
-
-               /* Trigger some tracing events using the Log4j Logger created before. */
-               HELLO_LOG.info("Hello World, the answer is " + 42);
-               HELLO_LOG.info("Another info event");
-               HELLO_LOG.error("An error event");
-
-               /* Cleanup */
-               HELLO_LOG.removeAppender(lttngAppender);
-               lttngAppender.close();
-       }
-}