/*
 * 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.List;

import org.apache.logging.log4j.spi.MutableThreadContextStack;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;

/**
 * <p>
 * <em>Consider this class private.</em>
 * </p>
 */
final class MutableThreadContextStackDeserializer extends StdDeserializer<MutableThreadContextStack> {

    private static final long serialVersionUID = 1L;

    MutableThreadContextStackDeserializer() {
        super(MutableThreadContextStack.class);
    }

    @Override
    public MutableThreadContextStack deserialize(final JsonParser jp, final DeserializationContext ctxt) throws IOException,
            JsonProcessingException {
        final List<String> list = jp.readValueAs(new TypeReference<List<String>>() {
            // empty
        });
        return new MutableThreadContextStack(list);
    }
}