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

   1 /*
   2  * Copyright © 2019 Bell Canada
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onap.ccsdk.cds.blueprintsprocessor.selfservice.api
  17
  18 import kotlinx.coroutines.async
  19 import kotlinx.coroutines.runBlocking
  20 import org.apache.commons.lang3.builder.ToStringBuilder
  21 import org.apache.kafka.clients.consumer.ConsumerRecord
  22 import org.onap.ccsdk.cds.blueprintsprocessor.core.api.data.ExecutionServiceInput
  23 import org.onap.ccsdk.cds.blueprintsprocessor.message.service.BluePrintMessageLibPropertyService
  24 import org.slf4j.LoggerFactory
  25 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty
  26 import org.springframework.kafka.annotation.KafkaListener
  27 import org.springframework.stereotype.Service
  28
  29 @ConditionalOnProperty(name = ["blueprintsprocessor.messageclient.self-service-api.kafkaEnable"], havingValue = "true")
  30 @Service
  31 open class MessagingController(private val propertyService: BluePrintMessageLibPropertyService,
  32                                private val executionServiceHandler: ExecutionServiceHandler) {
  33
  34     private val log = LoggerFactory.getLogger(MessagingController::class.java)!!
  35
  36     companion object {
  37         // TODO PREFIX should be retrieved from model or from request.
  38         const val PREFIX = "self-service-api"
  39         const val EXECUTION_STATUS = 200
  40     }
  41
  42     @KafkaListener(topics = ["\${blueprintsprocessor.messageclient.self-service-api.consumerTopic}"])
  43     open fun receive(record: ConsumerRecord<String, ExecutionServiceInput>) {
  44
  45         runBlocking {
  46             log.info("Successfully received a message: {}", ToStringBuilder.reflectionToString(record.value()))
  47
  48             // Process the message.
  49             async {
  50                 processMessage(record.value())
  51             }.await()
  52         }
  53     }
  54
  55     private suspend fun processMessage(executionServiceInput: ExecutionServiceInput) {
  56
  57         val executionServiceOutput = executionServiceHandler.doProcess(executionServiceInput)
  58
  59        if (executionServiceOutput.status.code == EXECUTION_STATUS) {
  60            val bluePrintMessageClientService = propertyService
  61                    .blueprintMessageClientService(PREFIX)
  62
  63            val payload = executionServiceOutput.payload
  64
  65            log.info("The payload to publish is {}", payload)
  66
  67             bluePrintMessageClientService.sendMessage(payload)
  68        }
  69         else {
  70            log.error("Fail to process the given event due to {}", executionServiceOutput.status.errorMessage)
  71        }
  72     }
  73 }