Refactor liblttng-ust-jul in liblttng-ust-agent

[lttng-ust.git] / liblttng-ust-java-agent / java / org / lttng / ust / agent / log4j / LTTngLogAppender.java

diff --git a/liblttng-ust-java-agent/java/org/lttng/ust/agent/log4j/LTTngLogAppender.java b/liblttng-ust-java-agent/java/org/lttng/ust/agent/log4j/LTTngLogAppender.java
new file mode 100644 (file)
index 0000000..0d4d6f3
--- /dev/null
+++ b/liblttng-ust-java-agent/java/org/lttng/ust/agent/log4j/LTTngLogAppender.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2014 - Christian Babeux <christian.babeux@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License, version 2.1 only,
+ * as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+package org.lttng.ust.agent.log4j;
+
+import java.lang.String;
+
+import org.apache.log4j.AppenderSkeleton;
+import org.apache.log4j.spi.LoggingEvent;
+
+class LTTngLogAppender extends AppenderSkeleton {
+       private Boolean is_root;
+
+       public LTTngLogAppender(Boolean isRoot) {
+               super();
+               this.is_root = isRoot;
+               try {
+                       System.loadLibrary("lttng-ust-log4j-jni"); //$NON-NLS-1$
+               } catch (SecurityException e) {
+                       e.printStackTrace();
+               } catch (UnsatisfiedLinkError e) {
+                       e.printStackTrace();
+               } catch (NullPointerException e) {
+                       /* Should never happen */
+                       e.printStackTrace();
+               }
+       }
+
+       public Boolean isRoot() {
+               return this.is_root;
+       }
+
+       @Override
+       protected void append(LoggingEvent event) {
+               int line;
+
+               /*
+                * The line number returned from LocationInformation is a
+                * string. At least try to convert to a proper int.
+                */
+               try {
+                       String lineString = event.getLocationInformation().getLineNumber();
+                       line = Integer.parseInt(lineString);
+               } catch (NumberFormatException n) {
+                       line = -1;
+               }
+
+               if (this.is_root) {
+                       tracepointS(event.getRenderedMessage(),
+                                   event.getLoggerName(),
+                                   event.getLocationInformation().getClassName(),
+                                   event.getLocationInformation().getMethodName(),
+                                   event.getLocationInformation().getFileName(),
+                                   line,
+                                   event.getTimeStamp(),
+                                   event.getLevel().toInt(),
+                                   event.getThreadName());
+               } else {
+                       tracepointU(event.getRenderedMessage(),
+                                   event.getLoggerName(),
+                                   event.getLocationInformation().getClassName(),
+                                   event.getLocationInformation().getMethodName(),
+                                   event.getLocationInformation().getFileName(),
+                                   line,
+                                   event.getTimeStamp(),
+                                   event.getLevel().toInt(),
+                                   event.getThreadName());
+               }
+       }
+
+       @Override
+       public void close() {}
+
+       @Override
+       public boolean requiresLayout() {
+               return false;
+       }
+
+       /* Use for a user session daemon. */
+       private native void tracepointU(String msg,
+                                       String logger_name,
+                                       String class_name,
+                                       String method_name,
+                                       String file_name,
+                                       int line_number,
+                                       long timestamp,
+                                       int loglevel,
+                                       String thread_name);
+
+       /* Use for a root session daemon. */
+       private native void tracepointS(String msg,
+                                       String logger_name,
+                                       String class_name,
+                                       String method_name,
+                                       String file_name,
+                                       int line_number,
+                                       long timestamp,
+                                       int loglevel,
+                                       String thread_name);
+}