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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements. See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache license, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License. You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the license for the specific language governing permissions and
    15   * limitations under the license.
    16   */
    17  package org.apache.logging.log4j.core.net.server;
    18
    19  import java.io.InputStream;
    20  import java.nio.charset.Charset;
    21
    22  import org.apache.logging.log4j.core.LogEvent;
    23  import org.apache.logging.log4j.core.jackson.Log4jXmlObjectMapper;
    24
    25  /**
    26   * Reads and logs {@link LogEvent}s from an {@link InputStream}.
    27   */
    28  public class XmlInputStreamLogEventBridge extends InputStreamLogEventBridge {
    29
    30      private static final String EVENT_END = "</Event>";
    31      private static final String EVENT_START_NS_N = "<Event>";
    32      private static final String EVENT_START_NS_Y = "<Event ";
    33
    34      public XmlInputStreamLogEventBridge() {
    35          this(1024, Charset.defaultCharset());
    36      }
    37
    38      public XmlInputStreamLogEventBridge(final int bufferSize, final Charset charset) {
    39          super(new Log4jXmlObjectMapper(), bufferSize, charset, EVENT_END);
    40      }
    41
    42      @Override
    43      protected int[] getEventIndices(final String text, final int beginIndex) {
    44          int start = text.indexOf(EVENT_START_NS_Y, beginIndex);
    45          int startLen = EVENT_START_NS_Y.length();
    46          if (start < 0) {
    47              start = text.indexOf(EVENT_START_NS_N, beginIndex);
    48              startLen = EVENT_START_NS_N.length();
    49          }
    50          final int end = start < 0 ? -1 : text.indexOf(EVENT_END, start + startLen);
    51          return new int[] { start, end };
    52      }
    53
    54  }