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/*
* Copyright © 2017-2018 AT&T Intellectual Property.
* Modifications Copyright © 2019 IBM.
*
* 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 org.onap.ccsdk.cds.blueprintsprocessor.selfservice.api
import io.grpc.Status
import io.grpc.stub.StreamObserver
import kotlinx.coroutines.runBlocking
import org.onap.ccsdk.cds.blueprintsprocessor.core.BlueprintCoreConfiguration
import org.onap.ccsdk.cds.blueprintsprocessor.core.utils.toJava
import org.onap.ccsdk.cds.controllerblueprints.core.BlueprintProcessorException
import org.onap.ccsdk.cds.controllerblueprints.processing.api.BlueprintProcessingServiceGrpc
import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput
import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput
import org.onap.ccsdk.cds.error.catalog.core.ErrorCatalogCodes
import org.onap.ccsdk.cds.error.catalog.core.utils.errorCauseOrDefault
import org.onap.ccsdk.cds.error.catalog.core.utils.errorMessageOrDefault
import org.onap.ccsdk.cds.error.catalog.services.ErrorCatalogService
import org.slf4j.LoggerFactory
import org.springframework.security.access.prepost.PreAuthorize
import org.springframework.stereotype.Service
import java.util.concurrent.Phaser
import javax.annotation.PreDestroy
@Service
open class BlueprintProcessingGRPCHandler(
private val bluePrintCoreConfiguration: BlueprintCoreConfiguration,
private val executionServiceHandler: ExecutionServiceHandler,
private val errorCatalogService: ErrorCatalogService
) :
BlueprintProcessingServiceGrpc.BlueprintProcessingServiceImplBase() {
private val log = LoggerFactory.getLogger(BlueprintProcessingGRPCHandler::class.java)
private val ph = Phaser(1)
@PreAuthorize("hasRole('USER')")
override fun process(
responseObserver: StreamObserver<ExecutionServiceOutput>
): StreamObserver<ExecutionServiceInput> {
return object : StreamObserver<ExecutionServiceInput> {
override fun onNext(executionServiceInput: ExecutionServiceInput) {
try {
ph.register()
runBlocking {
executionServiceHandler.process(executionServiceInput.toJava(), responseObserver)
}
} catch (e: Exception) {
onError(e)
} finally {
ph.arriveAndDeregister()
}
}
override fun onError(error: Throwable) {
log.debug("Fail to process message", error)
if (error is BlueprintProcessorException) onErrorCatalog(error) else onError(error)
}
fun onError(error: Exception) {
responseObserver.onError(
Status.INTERNAL
.withDescription(error.errorMessageOrDefault())
.withCause(error.errorCauseOrDefault())
.asException()
)
}
fun onErrorCatalog(error: BlueprintProcessorException) {
if (error.protocol == "") {
error.grpc(ErrorCatalogCodes.GENERIC_FAILURE)
}
val errorPayload = errorCatalogService.errorPayload(error)
val grpcCode = Status.fromCodeValue(errorPayload.code)
responseObserver.onError(
grpcCode
.withDescription(errorPayload.message)
.withCause(error.errorCauseOrDefault())
.asException()
)
}
override fun onCompleted() {
log.info("Completed")
}
}
}
@PreDestroy
fun preDestroy() {
val name = "BlueprintProcessingGRPCHandler"
log.info("Starting to shutdown $name waiting for in-flight requests to finish ...")
ph.arriveAndAwaitAdvance()
log.info("Done waiting in $name")
}
}
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