001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements. See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache license, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License. You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the license for the specific language governing permissions and
015     * limitations under the license.
016     */
017    package org.apache.logging.log4j.core.net.server;
018    
019    import java.io.InputStream;
020    import java.nio.charset.Charset;
021    
022    import org.apache.logging.log4j.core.LogEvent;
023    import org.apache.logging.log4j.core.jackson.Log4jXmlObjectMapper;
024    
025    /**
026     * Reads and logs {@link LogEvent}s from an {@link InputStream}.
027     */
028    public class XmlInputStreamLogEventBridge extends InputStreamLogEventBridge {
029    
030        private static final String EVENT_END = "</Event>";
031        private static final String EVENT_START_NS_N = "<Event>";
032        private static final String EVENT_START_NS_Y = "<Event ";
033    
034        public XmlInputStreamLogEventBridge() {
035            this(1024, Charset.defaultCharset());
036        }
037    
038        public XmlInputStreamLogEventBridge(final int bufferSize, final Charset charset) {
039            super(new Log4jXmlObjectMapper(), bufferSize, charset, EVENT_END);
040        }
041    
042        @Override
043        protected int[] getEventIndices(final String text, final int beginIndex) {
044            int start = text.indexOf(EVENT_START_NS_Y, beginIndex);
045            int startLen = EVENT_START_NS_Y.length();
046            if (start < 0) {
047                start = text.indexOf(EVENT_START_NS_N, beginIndex);
048                startLen = EVENT_START_NS_N.length();
049            }
050            final int end = start < 0 ? -1 : text.indexOf(EVENT_END, start + startLen);
051            return new int[] { start, end };
052        }
053    
054    }