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BaseDgsQueryExecutor.kt
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BaseDgsQueryExecutor.kt
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/*
* Copyright 2022 Netflix, Inc.
*
* 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
*
* http://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 com.netflix.graphql.dgs.internal
import com.fasterxml.jackson.databind.DeserializationFeature
import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
import com.jayway.jsonpath.Configuration
import com.jayway.jsonpath.JsonPath
import com.jayway.jsonpath.Option
import com.jayway.jsonpath.ParseContext
import com.jayway.jsonpath.spi.json.JacksonJsonProvider
import com.jayway.jsonpath.spi.mapper.JacksonMappingProvider
import com.netflix.graphql.dgs.context.DgsContext
import com.netflix.graphql.types.errors.ErrorType
import com.netflix.graphql.types.errors.TypedGraphQLError
import graphql.*
import graphql.execution.ExecutionIdProvider
import graphql.execution.ExecutionStrategy
import graphql.execution.instrumentation.Instrumentation
import graphql.execution.preparsed.PreparsedDocumentProvider
import graphql.schema.GraphQLSchema
import org.slf4j.Logger
import org.slf4j.LoggerFactory
import org.springframework.util.StringUtils
import java.util.*
import java.util.concurrent.CompletableFuture
object BaseDgsQueryExecutor {
private val logger: Logger = LoggerFactory.getLogger(BaseDgsQueryExecutor::class.java)
val objectMapper: ObjectMapper = jacksonObjectMapper()
.registerModule(JavaTimeModule())
.enable(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE)
.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
val parseContext: ParseContext =
JsonPath.using(
Configuration.builder()
.jsonProvider(JacksonJsonProvider(jacksonObjectMapper()))
.mappingProvider(JacksonMappingProvider(objectMapper)).build()
.addOptions(Option.DEFAULT_PATH_LEAF_TO_NULL)
)
fun baseExecute(
query: String?,
variables: Map<String, Any>?,
extensions: Map<String, Any>?,
operationName: String?,
dgsContext: DgsContext,
graphQLSchema: GraphQLSchema,
dataLoaderProvider: DgsDataLoaderProvider,
instrumentation: Instrumentation?,
queryExecutionStrategy: ExecutionStrategy,
mutationExecutionStrategy: ExecutionStrategy,
idProvider: Optional<ExecutionIdProvider>,
preparsedDocumentProvider: PreparsedDocumentProvider?,
): CompletableFuture<ExecutionResult> {
if (!StringUtils.hasText(query)) {
return CompletableFuture.completedFuture(
ExecutionResultImpl
.newExecutionResult()
.addError(
TypedGraphQLError
.newBadRequestBuilder()
.message("The query is null or empty.")
.errorType(ErrorType.BAD_REQUEST)
.build()
).build()
)
}
val graphQLBuilder =
GraphQL.newGraphQL(graphQLSchema)
.queryExecutionStrategy(queryExecutionStrategy)
.mutationExecutionStrategy(mutationExecutionStrategy)
preparsedDocumentProvider?.let { graphQLBuilder.preparsedDocumentProvider(it) }
instrumentation?.let { graphQLBuilder.instrumentation(it) }
idProvider.ifPresent { graphQLBuilder.executionIdProvider(it) }
val graphQL: GraphQL = graphQLBuilder.build()
val dataLoaderRegistry = dataLoaderProvider.buildRegistryWithContextSupplier { dgsContext }
val executionInputBuilder: ExecutionInput.Builder =
ExecutionInput
.newExecutionInput()
.query(query)
.operationName(operationName)
.variables(variables)
.dataLoaderRegistry(dataLoaderRegistry)
.context(dgsContext)
.graphQLContext(dgsContext)
.extensions(extensions.orEmpty())
return try {
graphQL.executeAsync(executionInputBuilder.build())
} catch (e: Exception) {
logger.error("Encountered an exception while handling query $query", e)
val errors: List<GraphQLError> = if (e is GraphQLError) listOf<GraphQLError>(e) else emptyList()
CompletableFuture.completedFuture(ExecutionResultImpl(null, errors))
}
}
}