package org.apache.velocity.runtime.parser; /* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import org.apache.velocity.runtime.parser.node.SimpleNode; import org.apache.velocity.util.introspection.Info; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.slf4j.MDC; import java.util.ArrayDeque; import java.util.ArrayList; import java.util.Deque; import java.util.Iterator; import java.util.List; /** *
Track location in template files during rendering by populating the slf4j MDC tags file
, line
and column
.
An MDC-aware logger can then use this info to display the template location in the message
*For instance with webapp-slf4j-logger, it's enough to use %file
, %line
and %column
in the logger format string.
Since this feature can have a performance impact, it has to be enabled in velocity.properties
using:
runtime.log.track_location = true
* (typically in a development environment)
* * @author Claude Brisson * @version $Id:$ * @since 2.2 */ public class LogContext { protected static Logger logger = LoggerFactory.getLogger("rendering"); public static final String MDC_FILE = "file"; public static final String MDC_LINE = "line"; public static final String MDC_COLUMN = "column"; private boolean trackLocation; public LogContext(boolean trackLocation) { this.trackLocation = trackLocation; } private static ThreadLocal