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.it.gcp.pubsub;
  
  import com.google.api.gax.core.CredentialsProvider;
  import com.google.cloud.pubsub.v1.Publisher;
  import com.google.pubsub.v1.TopicName;
  import java.io.IOException;
  
  /**
   * Client for building Pub/Sub publishers.
   *
   * <p>The class provides an interaction with the real Pub/Sub client, with operations related to
   * creating a Pub/Sub Publisher.
   */
  public class PubsubPublisherFactory {
  
    private final CredentialsProvider credentialsProvider;
  
    PubsubPublisherFactory(CredentialsProvider credentialsProvider) {
      this.credentialsProvider = credentialsProvider;
    }
  
    /** Create a {@link Publisher} instance for the given topic reference. */
    public Publisher createPublisher(TopicName topic) {
      try {
        return Publisher.newBuilder(topic).setCredentialsProvider(credentialsProvider).build();
      } catch (IOException e) {
        throw new PubsubResourceManagerException("Error creating publisher for topic", e);
      }
    }
  }
  