| /* |
| * 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.aws.sqs; |
| |
| import com.amazonaws.services.sqs.AmazonSQS; |
| import com.amazonaws.services.sqs.AmazonSQSClientBuilder; |
| import com.amazonaws.services.sqs.model.Message; |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.List; |
| import javax.annotation.Nullable; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.coders.SerializableCoder; |
| import org.apache.beam.sdk.io.UnboundedSource; |
| import org.apache.beam.sdk.io.aws.sqs.SqsIO.Read; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.base.Supplier; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.base.Suppliers; |
| |
| class SqsUnboundedSource extends UnboundedSource<Message, SqsCheckpointMark> { |
| |
| private final Read read; |
| private final SqsConfiguration sqsConfiguration; |
| private final Supplier<AmazonSQS> sqs; |
| |
| public SqsUnboundedSource(Read read, SqsConfiguration sqsConfiguration) { |
| this.read = read; |
| this.sqsConfiguration = sqsConfiguration; |
| |
| sqs = |
| Suppliers.memoize( |
| (Supplier<AmazonSQS> & Serializable) |
| () -> |
| AmazonSQSClientBuilder.standard() |
| .withClientConfiguration(sqsConfiguration.getClientConfiguration()) |
| .withCredentials(sqsConfiguration.getAwsCredentialsProvider()) |
| .withRegion(sqsConfiguration.getAwsRegion()) |
| .build()); |
| } |
| |
| @Override |
| public List<SqsUnboundedSource> split(int desiredNumSplits, PipelineOptions options) { |
| List<SqsUnboundedSource> sources = new ArrayList<>(); |
| for (int i = 0; i < Math.max(1, desiredNumSplits); ++i) { |
| sources.add(new SqsUnboundedSource(read, sqsConfiguration)); |
| } |
| return sources; |
| } |
| |
| @Override |
| public UnboundedReader<Message> createReader( |
| PipelineOptions options, @Nullable SqsCheckpointMark checkpointMark) { |
| return new SqsUnboundedReader(this, checkpointMark); |
| } |
| |
| @Override |
| public Coder<SqsCheckpointMark> getCheckpointMarkCoder() { |
| return SerializableCoder.of(SqsCheckpointMark.class); |
| } |
| |
| @Override |
| public Coder<Message> getOutputCoder() { |
| return SerializableCoder.of(Message.class); |
| } |
| |
| public Read getRead() { |
| return read; |
| } |
| |
| public AmazonSQS getSqs() { |
| return sqs.get(); |
| } |
| |
| @Override |
| public boolean requiresDeduping() { |
| return true; |
| } |
| } |