ms/blueprintsprocessor/modules/inbounds/selfservice-api/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/selfservice/api/BluePrintProcessingGRPCHandler.kt

   1 /*
   2  * Copyright © 2017-2018 AT&T Intellectual Property.
   3  * Modifications Copyright © 2019 IBM.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 package org.onap.ccsdk.cds.blueprintsprocessor.selfservice.api
  19
  20 import io.grpc.Status
  21 import io.grpc.stub.StreamObserver
  22 import kotlinx.coroutines.runBlocking
  23 import org.onap.ccsdk.cds.blueprintsprocessor.core.BluePrintCoreConfiguration
  24 import org.onap.ccsdk.cds.blueprintsprocessor.core.utils.toJava
  25 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
  26 import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc
  27 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput
  28 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput
  29 import org.onap.ccsdk.cds.error.catalog.core.ErrorCatalogCodes
  30 import org.onap.ccsdk.cds.error.catalog.core.utils.errorCauseOrDefault
  31 import org.onap.ccsdk.cds.error.catalog.core.utils.errorMessageOrDefault
  32 import org.onap.ccsdk.cds.error.catalog.services.ErrorCatalogService
  33 import org.slf4j.LoggerFactory
  34 import org.springframework.security.access.prepost.PreAuthorize
  35 import org.springframework.stereotype.Service
  36 import java.util.concurrent.Phaser
  37 import javax.annotation.PreDestroy
  38
  39 @Service
  40 open class BluePrintProcessingGRPCHandler(
  41     private val bluePrintCoreConfiguration: BluePrintCoreConfiguration,
  42     private val executionServiceHandler: ExecutionServiceHandler,
  43     private val errorCatalogService: ErrorCatalogService
  44 ) :
  45     BluePrintProcessingServiceGrpc.BluePrintProcessingServiceImplBase() {
  46
  47     private val log = LoggerFactory.getLogger(BluePrintProcessingGRPCHandler::class.java)
  48
  49     private val ph = Phaser(1)
  50
  51     @PreAuthorize("hasRole('USER')")
  52     override fun process(
  53         responseObserver: StreamObserver<ExecutionServiceOutput>
  54     ): StreamObserver<ExecutionServiceInput> {
  55
  56         return object : StreamObserver<ExecutionServiceInput> {
  57             override fun onNext(executionServiceInput: ExecutionServiceInput) {
  58                 try {
  59                     ph.register()
  60                     runBlocking {
  61                         executionServiceHandler.process(executionServiceInput.toJava(), responseObserver)
  62                     }
  63                 } catch (e: Exception) {
  64                     onError(e)
  65                 } finally {
  66                     ph.arriveAndDeregister()
  67                 }
  68             }
  69
  70             override fun onError(error: Throwable) {
  71                 log.debug("Fail to process message", error)
  72                 if (error is BluePrintProcessorException) onErrorCatalog(error) else onError(error)
  73             }
  74
  75             fun onError(error: Exception) {
  76                 responseObserver.onError(
  77                     Status.INTERNAL
  78                         .withDescription(error.errorMessageOrDefault())
  79                         .withCause(error.errorCauseOrDefault())
  80                         .asException()
  81                 )
  82             }
  83
  84             fun onErrorCatalog(error: BluePrintProcessorException) {
  85                 if (error.protocol == "") {
  86                     error.grpc(ErrorCatalogCodes.GENERIC_FAILURE)
  87                 }
  88                 val errorPayload = errorCatalogService.errorPayload(error)
  89                 val grpcCode = Status.fromCodeValue(errorPayload.code)
  90                 responseObserver.onError(
  91                     grpcCode
  92                         .withDescription(errorPayload.message)
  93                         .withCause(error.errorCauseOrDefault())
  94                         .asException()
  95                 )
  96             }
  97
  98             override fun onCompleted() {
  99                 log.info("Completed")
 100             }
 101         }
 102     }
 103
 104     @PreDestroy
 105     fun preDestroy() {
 106         val name = "BluePrintProcessingGRPCHandler"
 107         log.info("Starting to shutdown $name waiting for in-flight requests to finish ...")
 108         ph.arriveAndAwaitAdvance()
 109         log.info("Done waiting in $name")
 110     }
 111 }