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59 changes: 59 additions & 0 deletions
59
...re/src/main/java/com/linkedin/datahub/graphql/resolvers/domain/ParentDomainsResolver.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| package com.linkedin.datahub.graphql.resolvers.domain; | ||
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| import com.linkedin.common.urn.Urn; | ||
| import com.linkedin.common.urn.UrnUtils; | ||
| import com.linkedin.datahub.graphql.QueryContext; | ||
| import com.linkedin.datahub.graphql.generated.Entity; | ||
| import com.linkedin.datahub.graphql.generated.ParentDomainsResult; | ||
| import com.linkedin.datahub.graphql.resolvers.mutate.util.DomainUtils; | ||
| import com.linkedin.entity.client.EntityClient; | ||
| import graphql.schema.DataFetcher; | ||
| import graphql.schema.DataFetchingEnvironment; | ||
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|
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| import java.util.ArrayList; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.concurrent.CompletableFuture; | ||
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|
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| import static com.linkedin.metadata.Constants.DOMAIN_ENTITY_NAME; | ||
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| public class ParentDomainsResolver implements DataFetcher<CompletableFuture<ParentDomainsResult>> { | ||
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| private final EntityClient _entityClient; | ||
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| public ParentDomainsResolver(final EntityClient entityClient) { | ||
| _entityClient = entityClient; | ||
| } | ||
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| @Override | ||
| public CompletableFuture<ParentDomainsResult> get(DataFetchingEnvironment environment) { | ||
| final QueryContext context = environment.getContext(); | ||
| final Urn urn = UrnUtils.getUrn(((Entity) environment.getSource()).getUrn()); | ||
| final List<Entity> parentDomains = new ArrayList<>(); | ||
| final Set<String> visitedParentUrns = new HashSet<>(); | ||
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| if (!DOMAIN_ENTITY_NAME.equals(urn.getEntityType())) { | ||
| throw new IllegalArgumentException(String.format("Failed to resolve parents for entity type %s", urn)); | ||
| } | ||
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| return CompletableFuture.supplyAsync(() -> { | ||
| try { | ||
| Entity parentDomain = DomainUtils.getParentDomain(urn, context, _entityClient); | ||
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| while (parentDomain != null && !visitedParentUrns.contains(parentDomain.getUrn())) { | ||
| parentDomains.add(parentDomain); | ||
| visitedParentUrns.add(parentDomain.getUrn()); | ||
| parentDomain = DomainUtils.getParentDomain(Urn.createFromString(parentDomain.getUrn()), context, _entityClient); | ||
| } | ||
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| final ParentDomainsResult result = new ParentDomainsResult(); | ||
| result.setCount(parentDomains.size()); | ||
| result.setDomains(parentDomains); | ||
| return result; | ||
| } catch (Exception e) { | ||
| throw new RuntimeException(String.format("Failed to load parent domains for entity %s", urn), e); | ||
| } | ||
| }); | ||
| } | ||
| } |
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