| /* |
| * 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. |
| */ |
| package org.apache.logging.log4j.taglib; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import javax.servlet.jsp.JspException; |
| import javax.servlet.jsp.tagext.BodyTag; |
| import javax.servlet.jsp.tagext.DynamicAttributes; |
| import javax.servlet.jsp.tagext.Tag; |
| |
| import org.apache.logging.log4j.Level; |
| import org.apache.logging.log4j.Marker; |
| import org.apache.logging.log4j.message.Message; |
| |
| /** |
| * Implements common methods for logging tags that accept messages and markers. |
| * |
| * @since 2.0 |
| */ |
| abstract class LoggingMessageTagSupport extends ExceptionAwareTagSupport implements DynamicAttributes { |
| private static final long serialVersionUID = 1L; |
| |
| private static final String FQCN = LoggingMessageTagSupport.class.getName(); |
| |
| private transient Object message; |
| |
| private Marker marker; |
| |
| private List<Object> attributes; |
| |
| @Override |
| protected void init() { |
| super.init(); |
| this.message = null; |
| this.marker = null; |
| if (this.attributes == null) { |
| this.attributes = new ArrayList<>(); |
| } else { |
| this.attributes.clear(); |
| } |
| } |
| |
| protected final Object getMessage() throws JspException { |
| if (this.message == null) { |
| if (this.getBodyContent() == null) { |
| throw new JspException("Either message attribute or body content must be specified."); |
| } |
| return this.getBodyContent().getString(); |
| } |
| return this.message; |
| } |
| |
| public final void setMessage(final Object message) { |
| this.message = message; |
| } |
| |
| protected final Marker getMarker() { |
| return this.marker; |
| } |
| |
| public final void setMarker(final Marker marker) { |
| this.marker = marker; |
| } |
| |
| protected abstract Level getLevel(); |
| |
| @Override |
| public final void setDynamicAttribute(final String uri, final String name, final Object value) { |
| this.attributes.add(value); |
| } |
| |
| @Override |
| public final int doStartTag() { |
| return BodyTag.EVAL_BODY_BUFFERED; |
| } |
| |
| @Override |
| public final int doEndTag() throws JspException { |
| final Log4jTaglibLogger logger = this.getLogger(); |
| final Level level = this.getLevel(); |
| final Marker marker = this.getMarker(); |
| |
| if (TagUtils.isEnabled(logger, level, marker)) { |
| final Object message = this.getMessage(); |
| final Throwable exception = this.getException(); |
| if (message instanceof Message) { |
| logger.logIfEnabled(FQCN, level, marker, (Message) message, exception); |
| } else if (message instanceof String) { |
| Message data; |
| if (this.attributes.size() > 0) { |
| data = logger.getMessageFactory().newMessage((String) message, this.attributes.toArray()); |
| } else { |
| data = logger.getMessageFactory().newMessage((String) message); |
| } |
| logger.logIfEnabled(FQCN, level, marker, data, exception); |
| } else { |
| logger.logIfEnabled(FQCN, level, marker, logger.getMessageFactory().newMessage(message), exception); |
| } |
| } |
| |
| return Tag.EVAL_PAGE; |
| } |
| } |