retrofit2.converter.wire.WireConverterFactory Maven / Gradle / Ivy

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A Retrofit Converter which uses Wire for serialization.

There is a newer version: 3.0.0

/*
 * Copyright (C) 2013 Square, 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 retrofit2.converter.wire;

import com.squareup.wire.Message;
import com.squareup.wire.ProtoAdapter;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import retrofit2.Converter;
import retrofit2.Retrofit;

/**
 * A {@linkplain Converter.Factory converter} that uses Wire for protocol buffers.
 * 
 * This converter only applies for types which extend from {@link Message}.
 */
public final class WireConverterFactory extends Converter.Factory {
  public static WireConverterFactory create() {
    return new WireConverterFactory();
  }

  private WireConverterFactory() {
  }

  @Override
  public Converter responseBodyConverter(Type type, Annotation[] annotations,
      Retrofit retrofit) {
    if (!(type instanceof Class)) {
      return null;
    }
    Class c = (Class) type;
    if (!Message.class.isAssignableFrom(c)) {
      return null;
    }
    //noinspection unchecked
    ProtoAdapter adapter = ProtoAdapter.get((Class) c);
    return new WireResponseBodyConverter<>(adapter);
  }

  @Override
  public Converter requestBodyConverter(Type type,
      Annotation[] parameterAnnotations, Annotation[] methodAnnotations, Retrofit retrofit) {
    if (!(type instanceof Class)) {
      return null;
    }
    Class c = (Class) type;
    if (!Message.class.isAssignableFrom(c)) {
      return null;
    }
    //noinspection unchecked
    ProtoAdapter adapter = ProtoAdapter.get((Class) c);
    return new WireRequestBodyConverter<>(adapter);
  }
}