| /* |
| * 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.drill.exec.physical.impl; |
| |
| import java.util.List; |
| |
| import org.apache.drill.exec.exception.OutOfMemoryException; |
| import org.apache.drill.exec.ops.AccountingDataTunnel; |
| import org.apache.drill.exec.ops.ExecutorFragmentContext; |
| import org.apache.drill.exec.ops.MetricDef; |
| import org.apache.drill.exec.ops.RootFragmentContext; |
| import org.apache.drill.exec.physical.config.SingleSender; |
| import org.apache.drill.exec.proto.ExecProtos.FragmentHandle; |
| import org.apache.drill.exec.record.BatchSchema; |
| import org.apache.drill.exec.record.FragmentWritableBatch; |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.record.RecordBatch.IterOutcome; |
| import org.apache.drill.exec.testing.ControlsInjector; |
| import org.apache.drill.exec.testing.ControlsInjectorFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class SingleSenderCreator implements RootCreator<SingleSender>{ |
| |
| @Override |
| public RootExec getRoot(ExecutorFragmentContext context, SingleSender config, List<RecordBatch> children) { |
| assert children != null && children.size() == 1; |
| return new SingleSenderRootExec(context, children.iterator().next(), config); |
| } |
| |
| public static class SingleSenderRootExec extends BaseRootExec { |
| private static final Logger logger = LoggerFactory.getLogger(SingleSenderRootExec.class); |
| private static final ControlsInjector injector = ControlsInjectorFactory.getInjector(SingleSenderRootExec.class); |
| |
| private final FragmentHandle oppositeHandle; |
| |
| private final RecordBatch incoming; |
| private AccountingDataTunnel tunnel; |
| private final FragmentHandle handle; |
| private final int recMajor; |
| private volatile boolean ok = true; |
| private volatile boolean done = false; |
| |
| public enum Metric implements MetricDef { |
| BYTES_SENT; |
| |
| @Override |
| public int metricId() { |
| return ordinal(); |
| } |
| } |
| |
| public SingleSenderRootExec(RootFragmentContext context, RecordBatch batch, SingleSender config) throws OutOfMemoryException { |
| super(context, context.newOperatorContext(config, null), config); |
| this.incoming = batch; |
| assert incoming != null; |
| handle = context.getHandle(); |
| recMajor = config.getOppositeMajorFragmentId(); |
| tunnel = context.getDataTunnel(config.getDestination()); |
| oppositeHandle = handle.toBuilder() |
| .setMajorFragmentId(config.getOppositeMajorFragmentId()) |
| .setMinorFragmentId(config.getOppositeMinorFragmentId()) |
| .build(); |
| tunnel = context.getDataTunnel(config.getDestination()); |
| tunnel.setTestInjectionControls(injector, context.getExecutionControls(), logger); |
| } |
| |
| @Override |
| public boolean innerNext() { |
| if (!ok) { |
| incoming.kill(false); |
| |
| return false; |
| } |
| |
| IterOutcome out; |
| if (!done) { |
| out = next(incoming); |
| } else { |
| incoming.kill(true); |
| out = IterOutcome.NONE; |
| } |
| switch (out) { |
| case STOP: |
| case NONE: |
| // if we didn't do anything yet, send an empty schema. |
| final BatchSchema sendSchema = incoming.getSchema() == null ? |
| BatchSchema.newBuilder().build() : incoming.getSchema(); |
| |
| final FragmentWritableBatch b2 = FragmentWritableBatch.getEmptyLastWithSchema(handle.getQueryId(), |
| handle.getMajorFragmentId(), handle.getMinorFragmentId(), recMajor, oppositeHandle.getMinorFragmentId(), |
| sendSchema); |
| stats.startWait(); |
| try { |
| tunnel.sendRecordBatch(b2); |
| } finally { |
| stats.stopWait(); |
| } |
| return false; |
| |
| case OK_NEW_SCHEMA: |
| case OK: |
| final FragmentWritableBatch batch = new FragmentWritableBatch( |
| false, handle.getQueryId(), handle.getMajorFragmentId(), |
| handle.getMinorFragmentId(), recMajor, oppositeHandle.getMinorFragmentId(), |
| incoming.getWritableBatch().transfer(oContext.getAllocator())); |
| updateStats(batch); |
| stats.startWait(); |
| try { |
| tunnel.sendRecordBatch(batch); |
| } finally { |
| stats.stopWait(); |
| } |
| return true; |
| |
| case NOT_YET: |
| default: |
| throw new IllegalStateException(); |
| } |
| } |
| |
| public void updateStats(FragmentWritableBatch writableBatch) { |
| stats.addLongStat(Metric.BYTES_SENT, writableBatch.getByteCount()); |
| } |
| |
| @Override |
| public void receivingFragmentFinished(FragmentHandle handle) { |
| done = true; |
| } |
| } |
| } |