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32 changes: 32 additions & 0 deletions
32
.../src/main/java/com/linkedin/datahub/graphql/resolvers/datacontract/DataContractUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| package com.linkedin.datahub.graphql.resolvers.datacontract; | ||
|
|
||
| import com.datahub.authorization.ConjunctivePrivilegeGroup; | ||
| import com.datahub.authorization.DisjunctivePrivilegeGroup; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.linkedin.common.urn.Urn; | ||
| import com.linkedin.datahub.graphql.QueryContext; | ||
| import com.linkedin.datahub.graphql.authorization.AuthorizationUtils; | ||
| import com.linkedin.metadata.authorization.PoliciesConfig; | ||
| import javax.annotation.Nonnull; | ||
|
|
||
| public class DataContractUtils { | ||
|
|
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| public static boolean canEditDataContract(@Nonnull QueryContext context, Urn entityUrn) { | ||
| final DisjunctivePrivilegeGroup orPrivilegeGroups = | ||
| new DisjunctivePrivilegeGroup( | ||
| ImmutableList.of( | ||
| AuthorizationUtils.ALL_PRIVILEGES_GROUP, | ||
| new ConjunctivePrivilegeGroup( | ||
| ImmutableList.of( | ||
| PoliciesConfig.EDIT_ENTITY_DATA_CONTRACT_PRIVILEGE.getType())))); | ||
|
|
||
| return AuthorizationUtils.isAuthorized( | ||
| context.getAuthorizer(), | ||
| context.getActorUrn(), | ||
| entityUrn.getEntityType(), | ||
| entityUrn.toString(), | ||
| orPrivilegeGroups); | ||
| } | ||
|
|
||
| private DataContractUtils() {} | ||
| } |
96 changes: 96 additions & 0 deletions
96
.../java/com/linkedin/datahub/graphql/resolvers/datacontract/EntityDataContractResolver.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package com.linkedin.datahub.graphql.resolvers.datacontract; | ||
|
|
||
| import com.google.common.collect.ImmutableList; | ||
| import com.linkedin.common.EntityRelationship; | ||
| import com.linkedin.common.EntityRelationships; | ||
| import com.linkedin.common.urn.Urn; | ||
| import com.linkedin.datahub.graphql.QueryContext; | ||
| import com.linkedin.datahub.graphql.generated.DataContract; | ||
| import com.linkedin.datahub.graphql.generated.Entity; | ||
| import com.linkedin.datahub.graphql.types.datacontract.DataContractMapper; | ||
| import com.linkedin.entity.EntityResponse; | ||
| import com.linkedin.entity.client.EntityClient; | ||
| import com.linkedin.metadata.Constants; | ||
| import com.linkedin.metadata.graph.GraphClient; | ||
| import com.linkedin.metadata.query.filter.RelationshipDirection; | ||
| import com.linkedin.r2.RemoteInvocationException; | ||
| import graphql.schema.DataFetcher; | ||
| import graphql.schema.DataFetchingEnvironment; | ||
| import java.net.URISyntaxException; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import java.util.stream.Collectors; | ||
| import lombok.extern.slf4j.Slf4j; | ||
|
|
||
| @Slf4j | ||
| public class EntityDataContractResolver implements DataFetcher<CompletableFuture<DataContract>> { | ||
| static final String CONTRACT_FOR_RELATIONSHIP = "ContractFor"; | ||
|
|
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| private final EntityClient _entityClient; | ||
| private final GraphClient _graphClient; | ||
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| public EntityDataContractResolver( | ||
| final EntityClient entityClient, final GraphClient graphClient) { | ||
| _entityClient = Objects.requireNonNull(entityClient, "entityClient must not be null"); | ||
| _graphClient = Objects.requireNonNull(graphClient, "graphClient must not be null"); | ||
| } | ||
|
|
||
| @Override | ||
| public CompletableFuture<DataContract> get(DataFetchingEnvironment environment) { | ||
| return CompletableFuture.supplyAsync( | ||
| () -> { | ||
| final QueryContext context = environment.getContext(); | ||
| final String entityUrn = ((Entity) environment.getSource()).getUrn(); | ||
|
|
||
| try { | ||
| // Step 1: Fetch the contract associated with the dataset. | ||
| final EntityRelationships relationships = | ||
| _graphClient.getRelatedEntities( | ||
| entityUrn, | ||
| ImmutableList.of(CONTRACT_FOR_RELATIONSHIP), | ||
| RelationshipDirection.INCOMING, | ||
| 0, | ||
| 1, | ||
| context.getActorUrn()); | ||
|
|
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| // If we found multiple contracts for same entity, we have an invalid system state. Log | ||
| // a warning. | ||
| if (relationships.getTotal() > 1) { | ||
| // Someone created 2 contracts for the same entity. Currently, we do not handle this | ||
| // in the UI. | ||
| log.warn( | ||
| String.format( | ||
| "Unexpectedly found multiple contracts (%s) for entity with urn %s! This may lead to inconsistent behavior.", | ||
| relationships.getRelationships(), entityUrn)); | ||
| } | ||
|
|
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| final List<Urn> contractUrns = | ||
| relationships.getRelationships().stream() | ||
| .map(EntityRelationship::getEntity) | ||
| .collect(Collectors.toList()); | ||
|
|
||
| if (!contractUrns.isEmpty()) { | ||
| final Urn contractUrn = contractUrns.get(0); | ||
|
|
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| // Step 2: Hydrate the contract entities based on the urns from step 1 | ||
| final EntityResponse entityResponse = | ||
| _entityClient.getV2( | ||
| context.getOperationContext(), | ||
| Constants.DATA_CONTRACT_ENTITY_NAME, | ||
| contractUrn, | ||
| null); | ||
|
|
||
| if (entityResponse != null) { | ||
| // Step 4: Package and return result | ||
| return DataContractMapper.mapContract(entityResponse); | ||
| } | ||
| } | ||
| // No contract found | ||
| return null; | ||
| } catch (URISyntaxException | RemoteInvocationException e) { | ||
| throw new RuntimeException("Failed to retrieve Data Contract from GMS", e); | ||
| } | ||
| }); | ||
| } | ||
| } |
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