| /* |
| * 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.druid.indexing.common.task; |
| |
| import org.apache.druid.data.input.InputRow; |
| import org.apache.druid.indexing.common.task.batch.parallel.ParallelIndexSupervisorTaskClient; |
| import org.apache.druid.indexing.common.task.batch.parallel.SupervisorTaskAccess; |
| import org.apache.druid.segment.realtime.appenderator.SegmentIdWithShardSpec; |
| |
| import java.io.IOException; |
| |
| /** |
| * Segment allocator that allocates new segments using the supervisor task per request. |
| */ |
| public class SupervisorTaskCoordinatingSegmentAllocator implements SegmentAllocatorForBatch |
| { |
| private final String supervisorTaskId; |
| private final ParallelIndexSupervisorTaskClient taskClient; |
| private final SequenceNameFunction sequenceNameFunction; |
| private final boolean useLineageBasedSegmentAllocation; |
| |
| SupervisorTaskCoordinatingSegmentAllocator( |
| String taskId, |
| SupervisorTaskAccess supervisorTaskAccess, |
| boolean useLineageBasedSegmentAllocation |
| ) |
| { |
| this.supervisorTaskId = supervisorTaskAccess.getSupervisorTaskId(); |
| this.taskClient = supervisorTaskAccess.getTaskClient(); |
| this.sequenceNameFunction = new LinearlyPartitionedSequenceNameFunction(taskId); |
| this.useLineageBasedSegmentAllocation = useLineageBasedSegmentAllocation; |
| } |
| |
| @Override |
| public SegmentIdWithShardSpec allocate( |
| InputRow row, |
| String sequenceName, |
| String previousSegmentId, |
| boolean skipSegmentLineageCheck |
| ) throws IOException |
| { |
| if (useLineageBasedSegmentAllocation) { |
| return taskClient.allocateSegment(supervisorTaskId, row.getTimestamp(), sequenceName, previousSegmentId); |
| } else { |
| return taskClient.allocateSegment(supervisorTaskId, row.getTimestamp()); |
| } |
| } |
| |
| @Override |
| public SequenceNameFunction getSequenceNameFunction() |
| { |
| return sequenceNameFunction; |
| } |
| } |