com.linkedin.restli.examples.greetings.server.GreetingUnstructuredDataSimpleResourceReactive Maven / Gradle / Ivy

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/*
 * Copyright (c) 2017 LinkedIn Corp.
 *
 * 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 com.linkedin.restli.examples.greetings.server;

import com.linkedin.common.callback.Callback;
import com.linkedin.data.ByteString;
import com.linkedin.entitystream.EntityStreams;
import com.linkedin.entitystream.SingletonWriter;
import com.linkedin.entitystream.Writer;
import com.linkedin.restli.common.HttpStatus;
import com.linkedin.restli.server.UnstructuredDataReactiveReader;
import com.linkedin.restli.server.UnstructuredDataReactiveResult;
import com.linkedin.restli.server.UpdateResponse;
import com.linkedin.restli.server.annotations.CallbackParam;
import com.linkedin.restli.server.annotations.RestLiSimpleResource;
import com.linkedin.restli.server.annotations.UnstructuredDataReactiveReaderParam;
import com.linkedin.restli.server.resources.unstructuredData.UnstructuredDataSimpleResourceReactiveTemplate;

import static com.linkedin.restli.examples.greetings.server.GreetingUnstructuredDataUtils.MIME_TYPE;
import static com.linkedin.restli.examples.greetings.server.GreetingUnstructuredDataUtils.UNSTRUCTURED_DATA_BYTES;


/**
 * This resource models a simple resource that reactively streams unstructured data response.
 *
 * For more comprehensive examples, look at {@link GreetingUnstructuredDataCollectionResourceReactive}
 */
@RestLiSimpleResource(name = "reactiveGreetingSimpleUnstructuredData", namespace = "com.linkedin.restli.examples.greetings.client")
public class GreetingUnstructuredDataSimpleResourceReactive extends UnstructuredDataSimpleResourceReactiveTemplate
{
  @Override
  public void get(@CallbackParam Callback callback)
  {
    Writer writer = new SingletonWriter<>(ByteString.copy(UNSTRUCTURED_DATA_BYTES));
    callback.onSuccess(new UnstructuredDataReactiveResult(EntityStreams.newEntityStream(writer), MIME_TYPE));
  }

  @Override
  public void update(@UnstructuredDataReactiveReaderParam UnstructuredDataReactiveReader reader, @CallbackParam final Callback responseCallback)
  {
    reader.getEntityStream().setReader(new GreetingUnstructuredDataReader(responseCallback)
    {
      @Override
      UpdateResponse buildResponse()
      {
        return new UpdateResponse(HttpStatus.S_200_OK);
      }
    });
  }

  @Override
  public void delete(@CallbackParam Callback callback)
  {
    callback.onSuccess(new UpdateResponse(HttpStatus.S_200_OK));
  }
}