| /* |
| * 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 com.google.protobuf.ByteString; |
| import com.google.protobuf.InvalidProtocolBufferException; |
| import java.util.Map; |
| import org.apache.beam.sdk.transforms.SerializableFunction; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableMap; |
| |
| /** Common util functions for converting between PubsubMessage proto and {@link PubsubMessage}. */ |
| public class PubsubMessages { |
| // Convert the PubsubMessage to a PubsubMessage proto, then return its serialized representation. |
| public static class ParsePayloadAsPubsubMessageProto |
| implements SerializableFunction<PubsubMessage, byte[]> { |
| @Override |
| public byte[] apply(PubsubMessage input) { |
| Map<String, String> attributes = input.getAttributeMap(); |
| com.google.pubsub.v1.PubsubMessage.Builder message = |
| com.google.pubsub.v1.PubsubMessage.newBuilder() |
| .setData(ByteString.copyFrom(input.getPayload())); |
| // TODO(BEAM-8085) this should not be null |
| if (attributes != null) { |
| message.putAllAttributes(attributes); |
| } |
| String messageId = input.getMessageId(); |
| if (messageId != null) { |
| message.setMessageId(messageId); |
| } |
| return message.build().toByteArray(); |
| } |
| } |
| |
| // Convert the serialized PubsubMessage proto to PubsubMessage. |
| public static class ParsePubsubMessageProtoAsPayload |
| implements SerializableFunction<byte[], PubsubMessage> { |
| @Override |
| public PubsubMessage apply(byte[] input) { |
| try { |
| com.google.pubsub.v1.PubsubMessage message = |
| com.google.pubsub.v1.PubsubMessage.parseFrom(input); |
| return new PubsubMessage( |
| message.getData().toByteArray(), message.getAttributesMap(), message.getMessageId()); |
| } catch (InvalidProtocolBufferException e) { |
| throw new RuntimeException("Could not decode Pubsub message", e); |
| } |
| } |
| } |
| |
| public static class DeserializeBytesIntoPubsubMessagePayloadOnly |
| implements SerializableFunction<byte[], PubsubMessage> { |
| |
| @Override |
| public PubsubMessage apply(byte[] value) { |
| return new PubsubMessage(value, ImmutableMap.of()); |
| } |
| } |
| } |