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Implementation of conditional routing of sinks.
Signed-off-by: David Venable <[email protected]>
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35 changes: 35 additions & 0 deletions
35
data-prepper-core/src/main/java/org/opensearch/dataprepper/parser/DataFlowComponent.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
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| package org.opensearch.dataprepper.parser; | ||
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| import java.util.Collection; | ||
| import java.util.HashSet; | ||
| import java.util.Objects; | ||
| import java.util.Set; | ||
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| /** | ||
| * Represents a part of the pipeline through which data flows. This includes | ||
| * {@link com.amazon.dataprepper.model.sink.Sink} and {@link com.amazon.dataprepper.model.processor.Processor}. | ||
| * | ||
| * @param <T> The type of component. | ||
| */ | ||
| public class DataFlowComponent<T> { | ||
| private final T component; | ||
| private final Set<String> routes; | ||
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| DataFlowComponent(final T component, final Collection<String> routes) { | ||
| this.component = Objects.requireNonNull(component); | ||
| this.routes = new HashSet<>(Objects.requireNonNull(routes)); | ||
| } | ||
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| public T getComponent() { | ||
| return component; | ||
| } | ||
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| public Set<String> getRoutes() { | ||
| return routes; | ||
| } | ||
| } |
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54 changes: 54 additions & 0 deletions
54
...ore/src/main/java/org/opensearch/dataprepper/pipeline/router/DataFlowComponentRouter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
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| package org.opensearch.dataprepper.pipeline.router; | ||
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| import org.opensearch.dataprepper.model.record.Record; | ||
| import org.opensearch.dataprepper.parser.DataFlowComponent; | ||
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| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.function.BiConsumer; | ||
|
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| /** | ||
| * Package-protected utility to route for a single {@link DataFlowComponent}. This is | ||
| * intended to help break apart {@link Router} for better testing. | ||
| */ | ||
| class DataFlowComponentRouter { | ||
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| <C> void route(final Collection<Record> allRecords, | ||
| final DataFlowComponent<C> dataFlowComponent, | ||
| final Map<Record, Set<String>> recordsToRoutes, | ||
| final BiConsumer<C, Collection<Record>> componentRecordsConsumer) { | ||
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| final Collection<Record> recordsForComponent; | ||
| if (dataFlowComponent.getRoutes().isEmpty()) { | ||
| recordsForComponent = allRecords; | ||
| } else { | ||
| recordsForComponent = new ArrayList<>(); | ||
| for (Record event : allRecords) { | ||
| final Set<String> routesForEvent = recordsToRoutes | ||
| .getOrDefault(event, Collections.emptySet()); | ||
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| boolean routed = false; | ||
| for (String route : dataFlowComponent.getRoutes()) { | ||
| if (routesForEvent.contains(route)) { | ||
| routed = true; | ||
| break; | ||
| } | ||
| } | ||
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| if (routed) { | ||
| recordsForComponent.add(event); | ||
| } | ||
| } | ||
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| } | ||
| componentRecordsConsumer.accept(dataFlowComponent.getComponent(), recordsForComponent); | ||
| } | ||
| } |
75 changes: 75 additions & 0 deletions
75
...er-core/src/main/java/org/opensearch/dataprepper/pipeline/router/RouteEventEvaluator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
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| package org.opensearch.dataprepper.pipeline.router; | ||
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| import org.opensearch.dataprepper.model.configuration.ConditionalRoute; | ||
| import org.opensearch.dataprepper.model.event.Event; | ||
| import org.opensearch.dataprepper.model.record.Record; | ||
| import org.opensearch.dataprepper.expression.ExpressionEvaluator; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
|
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| class RouteEventEvaluator { | ||
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| private static final Logger LOG = LoggerFactory.getLogger(RouteEventEvaluator.class); | ||
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| private final ExpressionEvaluator<Boolean> evaluator; | ||
| private final Collection<ConditionalRoute> routes; | ||
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| RouteEventEvaluator(final ExpressionEvaluator<Boolean> evaluator, final Collection<ConditionalRoute> routes) { | ||
| this.evaluator = evaluator; | ||
| this.routes = routes; | ||
| } | ||
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| Map<Record, Set<String>> evaluateEventRoutes(final Collection<Record> records) { | ||
| final Map<Record, Set<String>> recordsToRoutes = new HashMap<>(); | ||
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| int nonEventRecords = 0; | ||
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| for (Record record : records) { | ||
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| final Object data = record.getData(); | ||
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| if(data instanceof Event) { | ||
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| final Event event = (Event) data; | ||
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| recordsToRoutes.put(record, new HashSet<>()); | ||
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| for (ConditionalRoute route : routes) { | ||
| Boolean routed; | ||
| try { | ||
| routed = evaluator.evaluate(route.getCondition(), event); | ||
| } catch (final Exception ex) { | ||
| routed = false; | ||
| LOG.error("Failed to evaluate route. This route will not be applied to any events.", ex); | ||
| } | ||
| if (routed) { | ||
| recordsToRoutes | ||
| .get(record) | ||
| .add(route.getName()); | ||
| } | ||
| } | ||
| } else { | ||
| nonEventRecords++; | ||
| recordsToRoutes.put(record, Collections.emptySet()); | ||
| } | ||
| } | ||
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| if(nonEventRecords > 0) { | ||
| LOG.warn("Received {} records which are not events. These will have no routes applied.", nonEventRecords); | ||
| } | ||
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| return recordsToRoutes; | ||
| } | ||
| } |
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