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Support DoFn metrics in portable Samza Runner (apache#25068)
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...rc/main/java/org/apache/beam/runners/samza/runtime/SamzaMetricsBundleProgressHandler.java
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| /* | ||
| * 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.samza.runtime; | ||
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| import static org.apache.beam.runners.core.metrics.MonitoringInfoConstants.TypeUrns.DISTRIBUTION_INT64_TYPE; | ||
| import static org.apache.beam.runners.core.metrics.MonitoringInfoConstants.TypeUrns.LATEST_INT64_TYPE; | ||
| import static org.apache.beam.runners.core.metrics.MonitoringInfoConstants.TypeUrns.SUM_INT64_TYPE; | ||
| import static org.apache.beam.runners.core.metrics.MonitoringInfoEncodings.decodeInt64Counter; | ||
| import static org.apache.beam.runners.core.metrics.MonitoringInfoEncodings.decodeInt64Distribution; | ||
| import static org.apache.beam.runners.core.metrics.MonitoringInfoEncodings.decodeInt64Gauge; | ||
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|
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| import java.util.Map; | ||
| import org.apache.beam.model.fnexecution.v1.BeamFnApi; | ||
| import org.apache.beam.model.pipeline.v1.MetricsApi; | ||
| import org.apache.beam.runners.core.metrics.DistributionData; | ||
| import org.apache.beam.runners.core.metrics.MonitoringInfoConstants; | ||
| import org.apache.beam.runners.fnexecution.control.BundleProgressHandler; | ||
| import org.apache.beam.runners.samza.metrics.SamzaMetricsContainer; | ||
| import org.apache.beam.sdk.metrics.Counter; | ||
| import org.apache.beam.sdk.metrics.Distribution; | ||
| import org.apache.beam.sdk.metrics.Gauge; | ||
| import org.apache.beam.sdk.metrics.MetricName; | ||
| import org.apache.beam.sdk.metrics.MetricsContainer; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| /** | ||
| * {@inheritDoc} Parses metrics information contained in the bundle progress messages. Passed the | ||
| * updated metrics to the provided SamzaMetricsContainer. | ||
| */ | ||
| class SamzaMetricsBundleProgressHandler implements BundleProgressHandler { | ||
|
|
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| private static final Logger LOG = | ||
| LoggerFactory.getLogger(SamzaMetricsBundleProgressHandler.class); | ||
| private final String stepName; | ||
|
|
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| private final SamzaMetricsContainer samzaMetricsContainer; | ||
| private final Map<String, String> transformIdToUniqueName; | ||
|
|
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| /** | ||
| * Constructor of a SamzaMetricsBundleProgressHandler. | ||
| * | ||
| * <p>The full metric names in classic mode is {transformUniqueName}:{className}:{metricName}. We | ||
| * attempt to follow the same format in portable mode, but the monitoringInfos returned by the | ||
| * worker only contains the transformId. The current solution is to provide a mapping from | ||
| * transformId back to uniqueName. A future improvement would be making the monitoring infos | ||
| * contain the uniqueName. | ||
| * | ||
| * @param stepName Default stepName provided by the runner. | ||
| * @param samzaMetricsContainer The destination for publishing the metrics. | ||
| * @param transformIdToUniqueName A mapping from transformId to uniqueName for pTransforms. | ||
| */ | ||
| public SamzaMetricsBundleProgressHandler( | ||
| String stepName, | ||
| SamzaMetricsContainer samzaMetricsContainer, | ||
| Map<String, String> transformIdToUniqueName) { | ||
| this.stepName = stepName; | ||
| this.samzaMetricsContainer = samzaMetricsContainer; | ||
| this.transformIdToUniqueName = transformIdToUniqueName; | ||
| } | ||
|
|
||
| @Override | ||
| /** | ||
| * {@inheritDoc} Handles a progress report from the bundle while it is executing. We choose to | ||
| * ignore the progress report. The metrics do not have to be updated on every progress report, so | ||
| * we save computation resources by ignoring it. | ||
| */ | ||
| public void onProgress(BeamFnApi.ProcessBundleProgressResponse progress) {} | ||
|
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| @Override | ||
| /** | ||
| * {@inheritDoc} Handles the bundle's completion report. Parses the monitoringInfos in the | ||
| * response, then updates the MetricsRegistry. | ||
| */ | ||
| public void onCompleted(BeamFnApi.ProcessBundleResponse response) { | ||
| response.getMonitoringInfosList().stream() | ||
| .filter(monitoringInfo -> !monitoringInfo.getPayload().isEmpty()) | ||
| .forEach(this::parseAndUpdateMetric); | ||
| } | ||
|
|
||
| /** | ||
| * Parses the metric contained in monitoringInfo, then publishes the metric to the | ||
| * metricContainer. | ||
| * | ||
| * <p>We attempt to construct a classic mode metricName | ||
| * ({transformUniqueName}:{className}:{metricName}). All the info should be in the labels, but we | ||
| * have fallbacks in case the labels don't exist. | ||
| * | ||
| * <p>Priorities for the transformUniqueName 1. Obtained transformUniqueName using the | ||
| * transformIdToUniqueName 2. The transformId provided by the monitoringInfo 3. The stepName | ||
| * provided by the runner, which maybe a result of fusing. | ||
| * | ||
| * <p>Priorities for the className 1. The namespace label 2. The monitoringInfo urn. Copying the | ||
| * implementation in MonitoringInfoMetricName. | ||
| * | ||
| * <p>Priorities for the metricName 1. The name label 2. The monitoringInfo urn. Copying the | ||
| * implementation in MonitoringInfoMetricName. | ||
| * | ||
| * @see | ||
| * org.apache.beam.runners.core.metrics.MonitoringInfoMetricName#of(MetricsApi.MonitoringInfo) | ||
| */ | ||
| private void parseAndUpdateMetric(MetricsApi.MonitoringInfo monitoringInfo) { | ||
| String pTransformId = | ||
| monitoringInfo.getLabelsOrDefault(MonitoringInfoConstants.Labels.PTRANSFORM, stepName); | ||
| String transformUniqueName = transformIdToUniqueName.getOrDefault(pTransformId, pTransformId); | ||
| String className = | ||
| monitoringInfo.getLabelsOrDefault( | ||
| MonitoringInfoConstants.Labels.NAMESPACE, monitoringInfo.getUrn()); | ||
| String userMetricName = | ||
| monitoringInfo.getLabelsOrDefault( | ||
| MonitoringInfoConstants.Labels.NAME, monitoringInfo.getLabelsMap().toString()); | ||
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| MetricsContainer metricsContainer = samzaMetricsContainer.getContainer(transformUniqueName); | ||
| MetricName metricName = MetricName.named(className, userMetricName); | ||
|
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| switch (monitoringInfo.getType()) { | ||
| case SUM_INT64_TYPE: | ||
| Counter counter = metricsContainer.getCounter(metricName); | ||
| counter.inc(decodeInt64Counter(monitoringInfo.getPayload())); | ||
| break; | ||
|
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| case DISTRIBUTION_INT64_TYPE: | ||
| Distribution distribution = metricsContainer.getDistribution(metricName); | ||
| DistributionData data = decodeInt64Distribution(monitoringInfo.getPayload()); | ||
| distribution.update(data.sum(), data.count(), data.min(), data.max()); | ||
| break; | ||
|
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| case LATEST_INT64_TYPE: | ||
| Gauge gauge = metricsContainer.getGauge(metricName); | ||
| // Gauge doesn't expose update as public. This will reset the timestamp. | ||
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| gauge.set(decodeInt64Gauge(monitoringInfo.getPayload()).value()); | ||
| break; | ||
|
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| default: | ||
| LOG.warn("Unsupported metric type {}", monitoringInfo.getType()); | ||
| } | ||
| } | ||
| } |
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