| /* |
| * 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.flink.runtime.checkpoint; |
| |
| import org.apache.flink.runtime.checkpoint.JobInitializationMetrics.SumMaxDuration; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| |
| import static org.apache.flink.runtime.checkpoint.JobInitializationMetrics.UNSET; |
| import static org.apache.flink.util.Preconditions.checkArgument; |
| import static org.apache.flink.util.Preconditions.checkState; |
| |
| class JobInitializationMetricsBuilder { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(JobInitializationMetricsBuilder.class); |
| |
| private final List<SubTaskInitializationMetrics> reportedMetrics = new ArrayList<>(); |
| private final int totalNumberOfSubTasks; |
| private final long startTs; |
| private Optional<Long> stateSize = Optional.empty(); |
| private Optional<Long> checkpointId = Optional.empty(); |
| private Optional<CheckpointProperties> checkpointProperties = Optional.empty(); |
| private Optional<String> externalPath = Optional.empty(); |
| |
| JobInitializationMetricsBuilder(int totalNumberOfSubTasks, long startTs) { |
| checkArgument(totalNumberOfSubTasks > 0); |
| this.totalNumberOfSubTasks = totalNumberOfSubTasks; |
| this.startTs = startTs; |
| } |
| |
| public boolean isComplete() { |
| return reportedMetrics.size() == totalNumberOfSubTasks; |
| } |
| |
| public long getStartTs() { |
| return startTs; |
| } |
| |
| public Optional<RestoredCheckpointStats> buildRestoredCheckpointStats() { |
| if (checkpointId.isPresent() && checkpointProperties.isPresent() && stateSize.isPresent()) { |
| return Optional.of( |
| new RestoredCheckpointStats( |
| checkpointId.get(), |
| checkpointProperties.get(), |
| startTs, |
| externalPath.orElse(null), |
| stateSize.get())); |
| } |
| return Optional.empty(); |
| } |
| |
| public JobInitializationMetrics build() { |
| checkState(isComplete()); |
| |
| long initializationEndTimestamp = 0; |
| Map<String, SumMaxDuration> duationMetrics = new HashMap<>(); |
| InitializationStatus status = InitializationStatus.COMPLETED; |
| |
| for (SubTaskInitializationMetrics reportedMetric : reportedMetrics) { |
| initializationEndTimestamp = |
| Math.max(reportedMetric.getEndTs(), initializationEndTimestamp); |
| aggregateMetrics(duationMetrics, reportedMetric.getDurationMetrics()); |
| switch (reportedMetric.getStatus()) { |
| case COMPLETED: |
| break; |
| case FAILED: |
| status = InitializationStatus.FAILED; |
| break; |
| default: |
| throw new UnsupportedOperationException( |
| "Unknown reported " |
| + InitializationStatus.class.getSimpleName() |
| + " = [" |
| + reportedMetric.getStatus() |
| + "]"); |
| } |
| } |
| |
| return new JobInitializationMetrics( |
| checkpointId.orElse(UNSET), |
| stateSize.orElse(UNSET), |
| status, |
| startTs, |
| initializationEndTimestamp, |
| duationMetrics); |
| } |
| |
| private static void aggregateMetrics( |
| Map<String, SumMaxDuration> target, Map<String, Long> sourceDurationMetrics) { |
| for (Map.Entry<String, Long> durationMetric : sourceDurationMetrics.entrySet()) { |
| String name = durationMetric.getKey(); |
| long value = durationMetric.getValue(); |
| SumMaxDuration targetDuration = |
| target.computeIfAbsent(name, (k) -> new SumMaxDuration(k)); |
| targetDuration.addDuration(value); |
| } |
| } |
| |
| public void reportInitializationMetrics(SubTaskInitializationMetrics initializationMetrics) { |
| LOG.debug("Reported SubTaskInitializationMetrics={}", initializationMetrics); |
| if (isComplete()) { |
| LOG.warn("Reported more SubTaskInitializationMetrics than expected!"); |
| return; |
| } |
| reportedMetrics.add(initializationMetrics); |
| } |
| |
| public JobInitializationMetricsBuilder setRestoredCheckpointStats( |
| long checkpointId, |
| long stateSize, |
| CheckpointProperties checkpointProperties, |
| String externalPath) { |
| this.checkpointId = Optional.of(checkpointId); |
| this.stateSize = Optional.of(stateSize); |
| this.checkpointProperties = Optional.ofNullable(checkpointProperties); |
| this.externalPath = Optional.ofNullable(externalPath); |
| return this; |
| } |
| } |