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             if (ids.size == 1) {
  36                 processorContext.forward(key, ids.first(), To.child(MessagePrioritizationConstants.PROCESSOR_OUTPUT))
  37             } else {
  38                 /** Implement Aggregation logic in overridden class, If necessary,
  39                  Populate New Message and Update status with Prioritized, Forward the message to next processor */
  40                 handleAggregation(ids)
  41                 /** Update all messages to Aggregated state */
  42                 messagePrioritizationStateService.setMessagesState(ids, MessageState.AGGREGATED.name)
  43             }
  44         }
  45     }
  46
  47     /** Child will override this implementation , if necessary */
  48     open suspend fun handleAggregation(messageIds: List<String>) {
  49         log.info("messages($messageIds) aggregated")
  50         messageIds.forEach { id ->
  51             processorContext.forward(id, id, To.child(MessagePrioritizationConstants.PROCESSOR_OUTPUT))
  52         }
  53     }
  54 }