hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/CommonHeadersContainerResponseFilter.java

/*
 * 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.hadoop.ozone.s3;

import javax.inject.Inject;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;

/**
 * This class adds common header responses for all the requests.
 */
@Provider
public class CommonHeadersContainerResponseFilter implements
    ContainerResponseFilter {

  @Inject
  private RequestIdentifier requestIdentifier;

  @Override
  public void filter(ContainerRequestContext containerRequestContext,
      ContainerResponseContext containerResponseContext) throws IOException {

    containerResponseContext.getHeaders().add("Server", "Ozone");
    containerResponseContext.getHeaders()
        .add("x-amz-id-2", requestIdentifier.getAmzId());
    containerResponseContext.getHeaders()
        .add("x-amz-request-id", requestIdentifier.getRequestId());

  }
}