forked from Netflix/dgs-framework
/
DefaultDataFetcherExceptionHandler.kt
85 lines (73 loc) · 3.54 KB
/
DefaultDataFetcherExceptionHandler.kt
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/*
* Copyright 2021 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.exceptions
import com.netflix.graphql.types.errors.TypedGraphQLError
import graphql.execution.DataFetcherExceptionHandler
import graphql.execution.DataFetcherExceptionHandlerParameters
import graphql.execution.DataFetcherExceptionHandlerResult
import org.slf4j.Logger
import org.slf4j.LoggerFactory
import org.springframework.util.ClassUtils
import java.util.concurrent.CompletableFuture
/**
* Default DataFetcherExceptionHandler used by the framework, can be replaced with a custom implementation.
* The default implementation uses the Common Errors library to return GraphQL errors.
*/
class DefaultDataFetcherExceptionHandler : DataFetcherExceptionHandler {
@Deprecated("Deprecated in GraphQL Java", replaceWith = ReplaceWith("handleException(handlerParameters)"))
override fun onException(handlerParameters: DataFetcherExceptionHandlerParameters): DataFetcherExceptionHandlerResult {
return doHandleException(handlerParameters)
}
override fun handleException(handlerParameters: DataFetcherExceptionHandlerParameters): CompletableFuture<DataFetcherExceptionHandlerResult> {
return CompletableFuture.completedFuture(doHandleException(handlerParameters))
}
private fun doHandleException(handlerParameters: DataFetcherExceptionHandlerParameters): DataFetcherExceptionHandlerResult {
val exception = handlerParameters.exception
logger.error(
"Exception while executing data fetcher for ${handlerParameters.path}: ${exception.message}",
exception
)
val graphqlError = when (exception) {
is DgsException -> exception.toGraphQlError(handlerParameters.path)
else -> when {
springSecurityAvailable && isSpringSecurityAccessException(exception) -> TypedGraphQLError.newPermissionDeniedBuilder()
else -> TypedGraphQLError.newInternalErrorBuilder()
}.message("%s: %s", exception::class.java.name, exception.message)
.path(handlerParameters.path)
.build()
}
return DataFetcherExceptionHandlerResult.newResult()
.error(graphqlError)
.build()
}
companion object {
private val logger: Logger = LoggerFactory.getLogger(DefaultDataFetcherExceptionHandler::class.java)
private val springSecurityAvailable: Boolean by lazy {
ClassUtils.isPresent(
"org.springframework.security.access.AccessDeniedException",
DefaultDataFetcherExceptionHandler::class.java.classLoader
)
}
private fun isSpringSecurityAccessException(exception: Throwable?): Boolean {
try {
return exception is org.springframework.security.access.AccessDeniedException
} catch (e: Throwable) {
logger.trace("Unable to verify if {} is a Spring Security's AccessDeniedException.", exception, e)
}
return false
}
}
}