| /* |
| * 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.io.gcp.pubsub; |
| |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.util.Map; |
| import javax.annotation.Nullable; |
| |
| /** |
| * Class representing a Pub/Sub message. Each message contains a single message payload, a map of |
| * attached attributes, and a message id. |
| */ |
| public class PubsubMessage { |
| |
| private byte[] message; |
| private Map<String, String> attributes; |
| private String messageId; |
| |
| public PubsubMessage(byte[] payload, Map<String, String> attributes) { |
| this.message = payload; |
| this.attributes = attributes; |
| this.messageId = null; |
| } |
| |
| public PubsubMessage(byte[] payload, Map<String, String> attributes, String messageId) { |
| this.message = payload; |
| this.attributes = attributes; |
| this.messageId = messageId; |
| } |
| |
| /** Returns the main PubSub message. */ |
| public byte[] getPayload() { |
| return message; |
| } |
| |
| /** Returns the given attribute value. If not such attribute exists, returns null. */ |
| @Nullable |
| public String getAttribute(String attribute) { |
| checkNotNull(attribute, "attribute"); |
| return attributes.get(attribute); |
| } |
| |
| /** Returns the full map of attributes. This is an unmodifiable map. */ |
| public Map<String, String> getAttributeMap() { |
| return attributes; |
| } |
| |
| /** Returns the messageId of the message populated by Cloud Pub/Sub. */ |
| @Nullable |
| public String getMessageId() { |
| return messageId; |
| } |
| } |