content: /*
   * 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.beam.sdk.extensions.gcp.util;
  
  import com.google.api.client.http.GenericUrl;
  import com.google.api.client.http.HttpResponse;
  import com.google.api.client.http.HttpResponseInterceptor;
  import java.io.IOException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Implements a response intercepter that logs the upload id if the upload id header exists and it
   * is the first request (does not have upload_id parameter in the request). Only logs if debug level
   * is enabled.
   */
  @SuppressWarnings({
    "nullness" // TODO(https://github.com/apache/beam/issues/20497)
  })
  public class UploadIdResponseInterceptor implements HttpResponseInterceptor {
  
    private static final Logger LOG = LoggerFactory.getLogger(UploadIdResponseInterceptor.class);
    private static final String UPLOAD_ID_PARAM = "upload_id";
    private static final String UPLOAD_TYPE_PARAM = "uploadType";
    private static final String UPLOAD_HEADER = "X-GUploader-UploadID";
  
    @Override
    public void interceptResponse(HttpResponse response) throws IOException {
      if (!LOG.isDebugEnabled()) {
        return;
      }
      String uploadId = response.getHeaders().getFirstHeaderStringValue(UPLOAD_HEADER);
      if (uploadId == null) {
        return;
      }
  
      GenericUrl url = response.getRequest().getUrl();
      // The check for no upload id limits the output to one log line per upload.
      // The check for upload type makes sure this is an upload and not a read.
      if (url.get(UPLOAD_ID_PARAM) == null && url.get(UPLOAD_TYPE_PARAM) != null) {
        LOG.debug(
            "Upload ID for url {} on worker {} is {}",
            url,
            System.getProperty("worker_id"),
            uploadId);
      }
    }
  }
  