gerrit.onap Code Review - ccsdk/cds.git/blob

   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.blueprintsprocessor.grpc.service.mdcGrpcCoroutineScope
  26 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
  27 import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc
  28 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput
  29 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput
  30 import org.onap.ccsdk.cds.error.catalog.core.ErrorCatalogCodes
  31 import org.onap.ccsdk.cds.error.catalog.core.utils.errorCauseOrDefault
  32 import org.onap.ccsdk.cds.error.catalog.core.utils.errorMessageOrDefault
  33 import org.onap.ccsdk.cds.error.catalog.services.ErrorCatalogService
  34 import org.slf4j.LoggerFactory
  35 import org.springframework.security.access.prepost.PreAuthorize
  36 import org.springframework.stereotype.Service
  37 import java.util.concurrent.Phaser
  38 import javax.annotation.PreDestroy
  39
  40 @Service
  41 open class BluePrintProcessingGRPCHandler(
  42     private val bluePrintCoreConfiguration: BluePrintCoreConfiguration,
  43     private val executionServiceHandler: ExecutionServiceHandler,
  44     private val errorCatalogService: ErrorCatalogService
  45 ) :
  46     BluePrintProcessingServiceGrpc.BluePrintProcessingServiceImplBase() {
  47
  48     private val log = LoggerFactory.getLogger(BluePrintProcessingGRPCHandler::class.java)
  49
  50     private val ph = Phaser(1)
  51
  52     @PreAuthorize("hasRole('USER')")
  53     override fun process(
  54         responseObserver: StreamObserver<ExecutionServiceOutput>
  55     ): StreamObserver<ExecutionServiceInput> {
  56
  57         return object : StreamObserver<ExecutionServiceInput> {
  58             override fun onNext(executionServiceInput: ExecutionServiceInput) {
  59                 try {
  60                     ph.register()
  61                     runBlocking {
  62                         mdcGrpcCoroutineScope(executionServiceInput) {
  63                             executionServiceHandler.process(executionServiceInput.toJava(), responseObserver)
  64                         }
  65                     }
  66                 } catch (e: Exception) {
  67                     if (e is BluePrintProcessorException) handleWithErrorCatalog(e) else handleError(e)
  68                 } finally {
  69                     ph.arriveAndDeregister()
  70                 }
  71             }
  72
  73             override fun onError(error: Throwable) {
  74                 log.error("Terminating stream error:", error)
  75             }
  76
  77             fun handleError(error: Exception) {
  78                 responseObserver.onError(
  79                     Status.INTERNAL
  80                         .withDescription(error.errorMessageOrDefault())
  81                         .withCause(error.errorCauseOrDefault())
  82                         .asException()
  83                 )
  84             }
  85
  86             fun handleWithErrorCatalog(error: BluePrintProcessorException) {
  87                 if (error.protocol == "") {
  88                     error.grpc(ErrorCatalogCodes.GENERIC_FAILURE)
  89                 }
  90                 val errorPayload = errorCatalogService.errorPayload(error)
  91                 val grpcCode = Status.fromCodeValue(errorPayload.code)
  92                 responseObserver.onError(
  93                     grpcCode
  94                         .withDescription(errorPayload.message)
  95                         .withCause(error.errorCauseOrDefault())
  96                         .asException()
  97                 )
  98             }
  99
 100             override fun onCompleted() {
 101                 log.info("Completed")
 102             }
 103         }
 104     }
 105
 106     @PreDestroy
 107     fun preDestroy() {
 108         val name = "BluePrintProcessingGRPCHandler"
 109         log.info("Starting to shutdown $name waiting for in-flight requests to finish ...")
 110         ph.arriveAndAwaitAdvance()
 111         log.info("Done waiting in $name")
 112     }
 113 }