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 */ 017package org.apache.logging.log4j.core.jackson; 018 019import java.io.IOException; 020import java.util.Map; 021 022import org.apache.logging.log4j.util.ReadOnlyStringMap; 023import org.apache.logging.log4j.util.BiConsumer; 024 025import com.fasterxml.jackson.core.JsonGenerationException; 026import com.fasterxml.jackson.core.JsonGenerator; 027import com.fasterxml.jackson.databind.SerializerProvider; 028import com.fasterxml.jackson.databind.ser.std.StdSerializer; 029 030/** 031 * <p> 032 * <em>Consider this class private.</em> 033 * </p> 034 */ 035public class ContextDataAsEntryListSerializer extends StdSerializer<ReadOnlyStringMap> { 036 037 private static final long serialVersionUID = 1L; 038 039 protected ContextDataAsEntryListSerializer() { 040 super(Map.class, false); 041 } 042 043 @Override 044 public void serialize(final ReadOnlyStringMap contextData, final JsonGenerator jgen, final SerializerProvider provider) 045 throws IOException, JsonGenerationException { 046 047 final MapEntry[] pairs = new MapEntry[contextData.size()]; 048 contextData.forEach(new BiConsumer<String, Object>() { 049 int i = 0; 050 051 @Override 052 public void accept(final String key, final Object value) { 053 pairs[i++] = new MapEntry(key, String.valueOf(value)); 054 } 055 }); 056 jgen.writeObject(pairs); 057 } 058}