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35 changes: 35 additions & 0 deletions
35
...-core/src/main/java/com/linkedin/datahub/graphql/concurrency/GraphQLConcurrencyUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package com.linkedin.datahub.graphql.concurrency; | ||
|
|
||
| import com.codahale.metrics.MetricRegistry; | ||
| import com.linkedin.metadata.utils.metrics.MetricUtils; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.function.Supplier; | ||
|
|
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| public class GraphQLConcurrencyUtils { | ||
| private GraphQLConcurrencyUtils() {} | ||
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|
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| private static ExecutorService graphQLExecutorService = null; | ||
|
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| public static ExecutorService getExecutorService() { | ||
| return GraphQLConcurrencyUtils.graphQLExecutorService; | ||
| } | ||
|
|
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| public static void setExecutorService(ExecutorService executorService) { | ||
| GraphQLConcurrencyUtils.graphQLExecutorService = executorService; | ||
| } | ||
|
|
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| public static <T> CompletableFuture<T> supplyAsync( | ||
| Supplier<T> supplier, String caller, String task) { | ||
| MetricUtils.counter( | ||
| MetricRegistry.name( | ||
| GraphQLConcurrencyUtils.class.getSimpleName(), "supplyAsync", caller, task)) | ||
| .inc(); | ||
| if (GraphQLConcurrencyUtils.graphQLExecutorService == null) { | ||
| return CompletableFuture.supplyAsync(supplier); | ||
| } else { | ||
| return CompletableFuture.supplyAsync( | ||
| supplier, GraphQLConcurrencyUtils.graphQLExecutorService); | ||
| } | ||
| } | ||
| } |
29 changes: 29 additions & 0 deletions
29
...rc/main/java/com/linkedin/datahub/graphql/concurrency/GraphQLWorkerPoolThreadFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| package com.linkedin.datahub.graphql.concurrency; | ||
|
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| import java.util.concurrent.ThreadFactory; | ||
| import java.util.concurrent.atomic.AtomicLong; | ||
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| public class GraphQLWorkerPoolThreadFactory implements ThreadFactory { | ||
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| private static final AtomicLong THREAD_INIT_NUMBER = new AtomicLong(); | ||
| public static final String GRAPHQL_THREAD_POOL_GROUP_NAME = "graphQLThreadGroup"; | ||
| public static final ThreadGroup GRAPHQL_THREAD_POOL_GROUP = | ||
| new ThreadGroup(GRAPHQL_THREAD_POOL_GROUP_NAME); | ||
|
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| private static long nextThreadNum() { | ||
| return THREAD_INIT_NUMBER.getAndIncrement(); | ||
| } | ||
|
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| private long stackSize; | ||
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| public GraphQLWorkerPoolThreadFactory(long stackSize) { | ||
| this.stackSize = stackSize; | ||
| } | ||
|
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| @Override | ||
| public final Thread newThread(Runnable runnable) { | ||
|
|
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| return new Thread( | ||
| GRAPHQL_THREAD_POOL_GROUP, runnable, "GraphQLWorkerThread-" + nextThreadNum(), stackSize); | ||
| } | ||
| } |
74 changes: 74 additions & 0 deletions
74
...n/java/com/linkedin/datahub/graphql/instrumentation/DataHubFieldComplexityCalculator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package com.linkedin.datahub.graphql.instrumentation; | ||
|
|
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| import graphql.analysis.FieldComplexityCalculator; | ||
| import graphql.analysis.FieldComplexityEnvironment; | ||
| import graphql.language.Field; | ||
| import graphql.language.FragmentSpread; | ||
| import graphql.language.Selection; | ||
| import graphql.language.SelectionSet; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import lombok.extern.slf4j.Slf4j; | ||
|
|
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| @Slf4j | ||
| public class DataHubFieldComplexityCalculator implements FieldComplexityCalculator { | ||
|
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| private static final String COUNT_ARG = "count"; | ||
| private static final String INPUT_ARG = "input"; | ||
| private static final String SEARCH_RESULTS_FIELD = "searchResults"; | ||
| private static final String ENTITY_FIELD = "entity"; | ||
| private static final String SEARCH_RESULT_FIELDS_FIELD = "searchResultFields"; | ||
| private static final String GRAPHQL_QUERY_TYPE = "Query"; | ||
|
|
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| @SuppressWarnings("rawtypes") | ||
| @Override | ||
| public int calculate(FieldComplexityEnvironment environment, int childComplexity) { | ||
| int complexity = 1; | ||
| Map<String, Object> args = environment.getArguments(); | ||
| if (args.containsKey(INPUT_ARG)) { | ||
| Map<String, Object> input = (Map<String, Object>) args.get(INPUT_ARG); | ||
| if (input.containsKey(COUNT_ARG) && (Integer) input.get(COUNT_ARG) > 1) { | ||
| Integer count = (Integer) input.get(COUNT_ARG); | ||
| Field field = environment.getField(); | ||
| complexity += countRecursiveLineageComplexity(count, field); | ||
| } | ||
| } | ||
| if (GRAPHQL_QUERY_TYPE.equals(environment.getParentType().getName())) { | ||
| log.info( | ||
| "Query complexity for query: {} is {}", | ||
| environment.getField().getName(), | ||
| complexity + childComplexity); | ||
| } | ||
| return complexity + childComplexity; | ||
| } | ||
|
|
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| private int countRecursiveLineageComplexity(Integer count, Field field) { | ||
| List<Selection> subFields = field.getSelectionSet().getSelections(); | ||
| Optional<FragmentSpread> searchResultsFieldsField = | ||
| subFields.stream() | ||
| .filter(selection -> selection instanceof Field) | ||
| .map(selection -> (Field) selection) | ||
| .filter(subField -> SEARCH_RESULTS_FIELD.equals(subField.getName())) | ||
| .map(Field::getSelectionSet) | ||
| .map(SelectionSet::getSelections) | ||
| .flatMap(List::stream) | ||
| .filter(selection -> selection instanceof Field) | ||
| .map(selection -> (Field) selection) | ||
| .filter(subField -> ENTITY_FIELD.equals(subField.getName())) | ||
| .map(Field::getSelectionSet) | ||
| .map(SelectionSet::getSelections) | ||
| .flatMap(List::stream) | ||
| .filter(selection -> selection instanceof FragmentSpread) | ||
| .map(selection -> (FragmentSpread) selection) | ||
| .filter(subField -> SEARCH_RESULT_FIELDS_FIELD.equals(subField.getName())) | ||
| .findFirst(); | ||
| if (searchResultsFieldsField.isPresent()) { | ||
| // This fragment includes 2 lineage queries, we account for this additional complexity by | ||
| // multiplying | ||
| // by the count of entities attempting to be returned | ||
| return 2 * count; | ||
| } | ||
| return 0; | ||
| } | ||
| } |
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