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Compute and write metrics for rows prior to store writes (#763)
* Compute and write metrics for rows prior to store writes * Fix tests, update docs, rebase on master
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ingestion/src/main/java/feast/ingestion/transform/metrics/WriteInflightMetricsTransform.java
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| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * Copyright 2018-2019 The Feast Authors | ||
| * | ||
| * Licensed 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 | ||
| * | ||
| * https://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 feast.ingestion.transform.metrics; | ||
|
|
||
| import com.google.auto.value.AutoValue; | ||
| import feast.ingestion.options.ImportOptions; | ||
| import feast.proto.types.FeatureRowProto.FeatureRow; | ||
| import org.apache.beam.sdk.metrics.Counter; | ||
| import org.apache.beam.sdk.metrics.Metrics; | ||
| import org.apache.beam.sdk.transforms.*; | ||
| import org.apache.beam.sdk.transforms.windowing.FixedWindows; | ||
| import org.apache.beam.sdk.transforms.windowing.Window; | ||
| import org.apache.beam.sdk.values.KV; | ||
| import org.apache.beam.sdk.values.PCollection; | ||
| import org.apache.beam.sdk.values.PDone; | ||
| import org.apache.beam.sdk.values.TypeDescriptors; | ||
| import org.joda.time.Duration; | ||
|
|
||
| @AutoValue | ||
| public abstract class WriteInflightMetricsTransform | ||
| extends PTransform<PCollection<FeatureRow>, PDone> { | ||
|
|
||
| public static final String METRIC_NAMESPACE = "Inflight"; | ||
| public static final String ELEMENTS_WRITTEN_METRIC = "elements_count"; | ||
| private static final Counter elements_count = | ||
| Metrics.counter(METRIC_NAMESPACE, ELEMENTS_WRITTEN_METRIC); | ||
|
|
||
| public abstract String getStoreName(); | ||
|
|
||
| public static WriteInflightMetricsTransform create(String storeName) { | ||
| return new AutoValue_WriteInflightMetricsTransform(storeName); | ||
| } | ||
|
|
||
| @Override | ||
| public PDone expand(PCollection<FeatureRow> input) { | ||
| ImportOptions options = input.getPipeline().getOptions().as(ImportOptions.class); | ||
|
|
||
| input.apply( | ||
| "IncrementInflightElementsCounter", | ||
| MapElements.into(TypeDescriptors.booleans()) | ||
| .via( | ||
| (FeatureRow row) -> { | ||
| elements_count.inc(); | ||
| return true; | ||
| })); | ||
|
|
||
| switch (options.getMetricsExporterType()) { | ||
| case "statsd": | ||
|
|
||
| // Fixed window is applied so the metric collector will not be overwhelmed with the metrics | ||
| // data. For validation, only summaries of the values are usually required vs the actual | ||
| // values. | ||
| PCollection<KV<String, Iterable<FeatureRow>>> rowsGroupedByRef = | ||
| input | ||
| .apply( | ||
| "FixedWindow", | ||
| Window.into( | ||
| FixedWindows.of( | ||
| Duration.standardSeconds( | ||
| options.getWindowSizeInSecForFeatureValueMetric())))) | ||
| .apply( | ||
| "ConvertToKV_FeatureSetRefToFeatureRow", | ||
| ParDo.of( | ||
| new DoFn<FeatureRow, KV<String, FeatureRow>>() { | ||
| @ProcessElement | ||
| public void processElement( | ||
| ProcessContext c, @Element FeatureRow featureRow) { | ||
| c.output(KV.of(featureRow.getFeatureSet(), featureRow)); | ||
| } | ||
| })) | ||
| .apply("GroupByFeatureSetRef", GroupByKey.create()); | ||
|
|
||
| rowsGroupedByRef.apply( | ||
| "WriteInflightRowMetrics", | ||
| ParDo.of( | ||
| WriteRowMetricsDoFn.newBuilder() | ||
| .setStatsdHost(options.getStatsdHost()) | ||
| .setStatsdPort(options.getStatsdPort()) | ||
| .setStoreName(getStoreName()) | ||
| .setMetricsNamespace(METRIC_NAMESPACE) | ||
| .build())); | ||
|
|
||
| rowsGroupedByRef.apply( | ||
| "WriteInflightFeatureValueMetrics", | ||
| ParDo.of( | ||
| WriteFeatureValueMetricsDoFn.newBuilder() | ||
| .setStatsdHost(options.getStatsdHost()) | ||
| .setStatsdPort(options.getStatsdPort()) | ||
| .setStoreName(getStoreName()) | ||
| .setMetricsNamespace(METRIC_NAMESPACE) | ||
| .build())); | ||
|
|
||
| return PDone.in(input.getPipeline()); | ||
| case "none": | ||
| default: | ||
| input.apply( | ||
| "Noop", | ||
| ParDo.of( | ||
| new DoFn<FeatureRow, Void>() { | ||
| @ProcessElement | ||
| public void processElement(ProcessContext c) {} | ||
| })); | ||
| return PDone.in(input.getPipeline()); | ||
| } | ||
| } | ||
| } |
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