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.camel.component.google.storage;
  
  import java.io.InputStream;
  
  import com.google.api.client.util.Strings;
  import com.google.auth.oauth2.ServiceAccountCredentials;
  import com.google.cloud.storage.Storage;
  import com.google.cloud.storage.StorageOptions;
  import org.apache.camel.CamelContext;
  import org.apache.camel.support.ResourceHelper;
  
  public final class GoogleCloudStorageConnectionFactory {
  
      /**
       * Prevent instantiation.
       */
      private GoogleCloudStorageConnectionFactory() {
      }
  
      public static Storage create(CamelContext context, GoogleCloudStorageConfiguration configuration) throws Exception {
          if (!Strings.isNullOrEmpty(configuration.getServiceAccountKey())) {
              InputStream resolveMandatoryResourceAsInputStream
                      = ResourceHelper.resolveMandatoryResourceAsInputStream(context, configuration.getServiceAccountKey());
              return StorageOptions.newBuilder()
                      .setCredentials(
                              ServiceAccountCredentials.fromStream(resolveMandatoryResourceAsInputStream))
                      .build().getService();
          } else {
              return StorageOptions.getDefaultInstance().getService();
          }
      }
  
  }
  