ms/blueprintsprocessor/functions/message-prioritizaion/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/functions/message/prioritization/topology/MessageAggregateProcessor.kt

   1 /*
   2  * Copyright © 2018-2019 AT&T Intellectual Property.
   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
  17 package org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.topology
  18
  19 import org.apache.kafka.streams.processor.To
  20 import org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.AbstractMessagePrioritizeProcessor
  21 import org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.MessagePrioritizationConstants
  22 import org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.MessageState
  23 import org.onap.ccsdk.cds.controllerblueprints.core.logger
  24
  25
  26 open class MessageAggregateProcessor : AbstractMessagePrioritizeProcessor<String, String>() {
  27
  28     private val log = logger(MessageAggregateProcessor::class)
  29
  30     override suspend fun processNB(key: String, value: String) {
  31
  32         log.info("@@@@@ received in aggregation processor key($key), value($value)")
  33         val ids = value.split(",").map { it.trim() }
  34         if (!ids.isNullOrEmpty()) {
  35             try {
  36                 if (ids.size == 1) {
  37                     processorContext.forward(key, ids.first(), To.child(MessagePrioritizationConstants.PROCESSOR_OUTPUT))
  38                 } else {
  39                     /** Implement Aggregation logic in overridden class, If necessary,
  40                     Populate New Message and Update status with Prioritized, Forward the message to next processor */
  41                     handleAggregation(ids)
  42                     /** Update all messages to Aggregated state */
  43                     messagePrioritizationStateService.setMessagesState(ids, MessageState.AGGREGATED.name)
  44                 }
  45             } catch (e: Exception) {
  46                 val error = "failed in Aggregate message($ids) : ${e.message}"
  47                 log.error(error, e)
  48                 val storeMessages = messagePrioritizationStateService.getMessages(ids)
  49                 if (!storeMessages.isNullOrEmpty()) {
  50                     storeMessages.forEach { messagePrioritization ->
  51                         try {
  52                             /** Update the data store */
  53                             messagePrioritizationStateService.setMessageStateANdError(messagePrioritization.id,
  54                                     MessageState.ERROR.name, error)
  55                             /** Publish to Error topic */
  56                             this.processorContext.forward(messagePrioritization.id, messagePrioritization,
  57                                     To.child(MessagePrioritizationConstants.SINK_OUTPUT))
  58                         } catch (sendException: Exception) {
  59                             log.error("failed to update/publish error message(${messagePrioritization.id}) : " +
  60                                     "${sendException.message}", e)
  61                         }
  62
  63                     }
  64                 }
  65             }
  66         }
  67     }
  68
  69     /** Child will override this implementation , if necessary */
  70     open suspend fun handleAggregation(messageIds: List<String>) {
  71         log.info("messages($messageIds) aggregated")
  72         messageIds.forEach { id ->
  73             processorContext.forward(id, id, To.child(MessagePrioritizationConstants.PROCESSOR_OUTPUT))
  74         }
  75     }
  76 }