--- /dev/null
+//
+// ========================================================================
+// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// All rights reserved. This program and the accompanying materials
+// are made available under the terms of the Eclipse Public License v1.0
+// and Apache License v2.0 which accompanies this distribution.
+//
+// The Eclipse Public License is available at
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// The Apache License v2.0 is available at
+// http://www.opensource.org/licenses/apache2.0.php
+//
+// You may elect to redistribute this code under either of these licenses.
+// ========================================================================
+//
+
+package org.eclipse.jetty.util.log;
+
+/**
+ * A simple logging facade that is intended simply to capture the style of logging as used by Jetty.
+ */
+public interface Logger
+{
+ /**
+ * @return the name of this logger
+ */
+ public String getName();
+
+ /**
+ * Formats and logs at warn level.
+ * @param msg the formatting string
+ * @param args the optional arguments
+ */
+ public void warn(String msg, Object... args);
+
+ /**
+ * Logs the given Throwable information at warn level
+ * @param thrown the Throwable to log
+ */
+ public void warn(Throwable thrown);
+
+ /**
+ * Logs the given message at warn level, with Throwable information.
+ * @param msg the message to log
+ * @param thrown the Throwable to log
+ */
+ public void warn(String msg, Throwable thrown);
+
+ /**
+ * Formats and logs at info level.
+ * @param msg the formatting string
+ * @param args the optional arguments
+ */
+ public void info(String msg, Object... args);
+
+ /**
+ * Logs the given Throwable information at info level
+ * @param thrown the Throwable to log
+ */
+ public void info(Throwable thrown);
+
+ /**
+ * Logs the given message at info level, with Throwable information.
+ * @param msg the message to log
+ * @param thrown the Throwable to log
+ */
+ public void info(String msg, Throwable thrown);
+
+ /**
+ * @return whether the debug level is enabled
+ */
+ public boolean isDebugEnabled();
+
+ /**
+ * Mutator used to turn debug on programmatically.
+ * @param enabled whether to enable the debug level
+ */
+ public void setDebugEnabled(boolean enabled);
+
+ /**
+ * Formats and logs at debug level.
+ * @param msg the formatting string
+ * @param args the optional arguments
+ */
+ public void debug(String msg, Object... args);
+
+
+ /**
+ * Formats and logs at debug level.
+ * avoids autoboxing of integers
+ * @param msg the formatting string
+ * @param value long value
+ */
+ public void debug(String msg, long value);
+
+ /**
+ * Logs the given Throwable information at debug level
+ * @param thrown the Throwable to log
+ */
+ public void debug(Throwable thrown);
+
+ /**
+ * Logs the given message at debug level, with Throwable information.
+ * @param msg the message to log
+ * @param thrown the Throwable to log
+ */
+ public void debug(String msg, Throwable thrown);
+
+ /**
+ * @param name the name of the logger
+ * @return a logger with the given name
+ */
+ public Logger getLogger(String name);
+
+ /**
+ * Ignore an exception.
+ * <p>This should be used rather than an empty catch block.
+ */
+ public void ignore(Throwable ignored);
+}