StringDecoder.java

/*
 * Copyright 2013 Netflix, Inc.
 *
 * Licensed 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 feign.codec;

import java.io.IOException;
import java.lang.reflect.Type;

import feign.Response;
import feign.Util;

import static java.lang.String.format;

public class StringDecoder implements Decoder {

  @Override
  public Object decode(Response response, Type type) throws IOException {
    Response.Body body = response.body();
    if (body == null) {
      return null;
    }
    if (String.class.equals(type)) {
      return Util.toString(body.asReader());
    }
    throw new DecodeException(format("%s is not a type supported by this decoder.", type));
  }
}