| /** |
| * 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 com.jwplayer.sqe.trident.spout.kafka; |
| |
| import org.apache.storm.kafka.Partition; |
| import org.apache.storm.kafka.trident.GlobalPartitionInformation; |
| import org.apache.storm.kafka.trident.TridentKafkaConfig; |
| import org.apache.storm.kafka.trident.TridentKafkaEmitter; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.trident.operation.TridentCollector; |
| import org.apache.storm.trident.spout.IOpaquePartitionedTridentSpout; |
| import org.apache.storm.trident.spout.IPartitionedTridentSpout; |
| import org.apache.storm.trident.topology.TransactionAttempt; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| |
| public class FilteredTridentKafkaEmitter { |
| private TridentKafkaEmitter emitter; |
| private long hwmTtl; |
| |
| public FilteredTridentKafkaEmitter(Map conf, TopologyContext context, TridentKafkaConfig config, String topologyInstanceId, long hwmTtl) { |
| this.emitter = new TridentKafkaEmitter(conf, context, config, topologyInstanceId); |
| this.hwmTtl = hwmTtl; |
| } |
| |
| private static class OpaqueEmitter implements IOpaquePartitionedTridentSpout.Emitter<List<GlobalPartitionInformation>, Partition, Map> { |
| private IOpaquePartitionedTridentSpout.Emitter emitter; |
| private long hwmTtl; |
| |
| private OpaqueEmitter(TridentKafkaEmitter tridentKafkaEmitter, long hwmTtl) { |
| this.emitter = tridentKafkaEmitter.asOpaqueEmitter(); |
| this.hwmTtl = hwmTtl; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public Map emitPartitionBatch(TransactionAttempt transactionAttempt, TridentCollector collector, Partition partition, Map lastMetadata) { |
| FilteredTridentCollector filteredCollector = new FilteredTridentCollector(collector, 0, hwmTtl, lastMetadata); // TODO: keyIndex is hardcoded to 0 here |
| Map newMetadata = (Map) emitter.emitPartitionBatch(transactionAttempt, filteredCollector, partition, lastMetadata); |
| return filteredCollector.resolveMetadata(newMetadata); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void refreshPartitions(List<Partition> partitions) { |
| emitter.refreshPartitions(partitions); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public List<Partition> getOrderedPartitions(List<GlobalPartitionInformation> partitionInformation) { |
| return emitter.getOrderedPartitions(partitionInformation); |
| } |
| |
| public void close() { |
| emitter.close(); |
| } |
| } |
| |
| public IOpaquePartitionedTridentSpout.Emitter<List<GlobalPartitionInformation>, Partition, Map> asOpaqueEmitter() { |
| return new OpaqueEmitter(emitter, hwmTtl); |
| } |
| |
| private static class TransactionalEmitter implements IPartitionedTridentSpout.Emitter<List<GlobalPartitionInformation>, Partition, Map> { |
| private IPartitionedTridentSpout.Emitter emitter; |
| private long hwmTtl; |
| |
| private TransactionalEmitter(TridentKafkaEmitter tridentKafkaEmitter, long hwmTtl) { |
| this.emitter = tridentKafkaEmitter.asTransactionalEmitter(); |
| this.hwmTtl = hwmTtl; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public Map emitPartitionBatchNew(TransactionAttempt attempt, TridentCollector collector, Partition partition, Map lastMetadata) { |
| FilteredTridentCollector filteredCollector = new FilteredTridentCollector(collector, 0, hwmTtl, lastMetadata); // TODO: keyIndex is hardcoded to 0 here |
| Map newMetadata = (Map) emitter.emitPartitionBatchNew(attempt, collector, partition, lastMetadata); |
| return filteredCollector.resolveMetadata(newMetadata); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void emitPartitionBatch(TransactionAttempt attempt, TridentCollector collector, Partition partition, Map lastMetadata) { |
| FilteredTridentCollector filteredCollector = new FilteredTridentCollector(collector, 0, hwmTtl, lastMetadata); // TODO: keyIndex is hardcoded to 0 here |
| emitter.emitPartitionBatch(attempt, filteredCollector, partition, lastMetadata); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void refreshPartitions(List<Partition> partitions) { |
| emitter.refreshPartitions(partitions); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public List<Partition> getOrderedPartitions(List<GlobalPartitionInformation> partitionInformation) { |
| return emitter.getOrderedPartitions(partitionInformation); |
| } |
| |
| public void close() { |
| emitter.close(); |
| } |
| } |
| |
| public IPartitionedTridentSpout.Emitter asTransactionalEmitter() { |
| return new TransactionalEmitter(emitter, hwmTtl); |
| } |
| } |