| /* |
| * 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.runners.fnexecution.control; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.function.BiConsumer; |
| import org.apache.beam.runners.core.StateNamespace; |
| import org.apache.beam.runners.core.StateNamespaces; |
| import org.apache.beam.runners.core.TimerInternals; |
| import org.apache.beam.runners.core.TimerInternals.TimerData; |
| import org.apache.beam.runners.core.construction.Timer; |
| import org.apache.beam.runners.fnexecution.control.ProcessBundleDescriptors.TimerSpec; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.fn.data.FnDataReceiver; |
| import org.apache.beam.sdk.state.TimeDomain; |
| import org.apache.beam.sdk.transforms.windowing.BoundedWindow; |
| import org.apache.beam.sdk.util.WindowedValue; |
| import org.apache.beam.sdk.values.KV; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * {@link OutputReceiverFactory} that passes outputs to {@link |
| * TimerReceiverFactory#timerDataConsumer}. |
| */ |
| public class TimerReceiverFactory implements OutputReceiverFactory { |
| private static final Logger LOG = LoggerFactory.getLogger(TimerReceiverFactory.class); |
| |
| /** Timer PCollection id => TimerReference. */ |
| private final HashMap<String, TimerSpec> timerOutputIdToSpecMap; |
| |
| private final BiConsumer<WindowedValue, TimerData> timerDataConsumer; |
| private final Coder windowCoder; |
| |
| public TimerReceiverFactory( |
| StageBundleFactory stageBundleFactory, |
| BiConsumer<WindowedValue, TimerInternals.TimerData> timerDataConsumer, |
| Coder windowCoder) { |
| this.timerOutputIdToSpecMap = new HashMap<>(); |
| // Gather all timers from all transforms by their output pCollectionId which is unique |
| for (Map<String, ProcessBundleDescriptors.TimerSpec> transformTimerMap : |
| stageBundleFactory.getProcessBundleDescriptor().getTimerSpecs().values()) { |
| for (ProcessBundleDescriptors.TimerSpec timerSpec : transformTimerMap.values()) { |
| timerOutputIdToSpecMap.put(timerSpec.outputCollectionId(), timerSpec); |
| } |
| } |
| this.timerDataConsumer = timerDataConsumer; |
| this.windowCoder = windowCoder; |
| } |
| |
| @Override |
| public <OutputT> FnDataReceiver<OutputT> create(String pCollectionId) { |
| final ProcessBundleDescriptors.TimerSpec timerSpec = timerOutputIdToSpecMap.get(pCollectionId); |
| |
| return receivedElement -> { |
| WindowedValue windowedValue = (WindowedValue) receivedElement; |
| Timer timer = |
| Preconditions.checkNotNull( |
| (Timer) ((KV) windowedValue.getValue()).getValue(), |
| "Received null Timer from SDK harness: %s", |
| receivedElement); |
| LOG.debug("Timer received: {} {}", pCollectionId, timer); |
| for (Object window : windowedValue.getWindows()) { |
| StateNamespace namespace = StateNamespaces.window(windowCoder, (BoundedWindow) window); |
| TimeDomain timeDomain = timerSpec.getTimerSpec().getTimeDomain(); |
| String timerId = timerSpec.inputCollectionId(); |
| TimerInternals.TimerData timerData = |
| TimerInternals.TimerData.of(timerId, namespace, timer.getTimestamp(), timeDomain); |
| timerDataConsumer.accept(windowedValue, timerData); |
| } |
| }; |
| } |
| } |