/*
    * 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.core.jackson;
  
  import java.io.IOException;
  import java.util.Map;
  
  import org.apache.logging.log4j.util.ReadOnlyStringMap;
  import org.apache.logging.log4j.util.BiConsumer;
  
  import com.fasterxml.jackson.core.JsonGenerationException;
  import com.fasterxml.jackson.core.JsonGenerator;
  import com.fasterxml.jackson.databind.SerializerProvider;
  import com.fasterxml.jackson.databind.ser.std.StdSerializer;
  
  /**
   * <p>
   * <em>Consider this class private.</em>
   * </p>
   */
  public class ContextDataAsEntryListSerializer extends StdSerializer<ReadOnlyStringMap> {
  
      private static final long serialVersionUID = 1L;
  
      protected ContextDataAsEntryListSerializer() {
          super(Map.class, false);
      }
  
      @Override
      public void serialize(final ReadOnlyStringMap contextData, final JsonGenerator jgen, final SerializerProvider provider)
              throws IOException, JsonGenerationException {
  
          final MapEntry[] pairs = new MapEntry[contextData.size()];
          contextData.forEach(new BiConsumer<String, Object>() {
              int i = 0;
  
              @Override
              public void accept(final String key, final Object value) {
                  pairs[i++] = new MapEntry(key, String.valueOf(value));
              }
          });
          jgen.writeObject(pairs);
      }
  }