| /* |
| * 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.server; |
| |
| import java.io.InputStream; |
| import java.nio.charset.Charset; |
| |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.jackson.json.parser.JsonLogEventParser; |
| import org.apache.logging.log4j.util.Chars; |
| |
| /** |
| * Reads and logs JSON {@link LogEvent}s from an {@link InputStream}.. |
| */ |
| public class JsonInputStreamLogEventBridge extends InputStreamLogEventBridge { |
| |
| private static final int[] END_PAIR = new int[] { END, END }; |
| private static final char EVENT_END_MARKER = '}'; |
| private static final char EVENT_START_MARKER = '{'; |
| private static final char JSON_ESC = '\\'; |
| private static final char JSON_STR_DELIM = Chars.DQUOTE; |
| |
| public JsonInputStreamLogEventBridge() { |
| this(1024, Charset.defaultCharset()); |
| } |
| |
| public JsonInputStreamLogEventBridge(final int bufferSize, final Charset charset) { |
| super(new JsonLogEventParser(), bufferSize, charset, |
| String.valueOf(EVENT_END_MARKER)); |
| } |
| |
| @Override |
| protected int[] getEventIndices(final String text, final int beginIndex) { |
| // Scan the text for the end of the next JSON object. |
| final int start = text.indexOf(EVENT_START_MARKER, beginIndex); |
| if (start == END) { |
| return END_PAIR; |
| } |
| final char[] charArray = text.toCharArray(); |
| int stack = 0; |
| boolean inStr = false; |
| boolean inEsc = false; |
| for (int i = start; i < charArray.length; i++) { |
| final char c = charArray[i]; |
| if (inEsc) { |
| // Skip this char and continue |
| inEsc = false; |
| } else { |
| switch (c) { |
| case EVENT_START_MARKER: |
| if (!inStr) { |
| stack++; |
| } |
| break; |
| case EVENT_END_MARKER: |
| if (!inStr) { |
| stack--; |
| } |
| break; |
| case JSON_STR_DELIM: |
| inStr = !inStr; |
| break; |
| case JSON_ESC: |
| inEsc = true; |
| break; |
| } |
| if (stack == 0) { |
| return new int[] { start, i }; |
| } |
| } |
| } |
| return END_PAIR; |
| } |
| |
| } |