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 open class MessageAggregateProcessor : AbstractMessagePrioritizeProcessor<String, String>() {
  26
  27     private val log = logger(MessageAggregateProcessor::class)
  28
  29     override suspend fun processNB(key: String, value: String) {
  30
  31         log.info("@@@@@ received in aggregation processor key($key), value($value)")
  32         val ids = value.split(",").map { it.trim() }
  33         if (!ids.isNullOrEmpty()) {
  34             try {
  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             } catch (e: Exception) {
  45                 val error = "failed in Aggregate message($ids) : ${e.message}"
  46                 log.error(error, e)
  47                 val storeMessages = messagePrioritizationStateService.getMessages(ids)
  48                 if (!storeMessages.isNullOrEmpty()) {
  49                     storeMessages.forEach { messagePrioritization ->
  50                         try {
  51                             /** Update the data store */
  52                             messagePrioritizationStateService.setMessageStateANdError(
  53                                 messagePrioritization.id,
  54                                 MessageState.ERROR.name, error
  55                             )
  56                             /** Publish to Error topic */
  57                             this.processorContext.forward(
  58                                 messagePrioritization.id, messagePrioritization,
  59                                 To.child(MessagePrioritizationConstants.SINK_OUTPUT)
  60                             )
  61                         } catch (sendException: Exception) {
  62                             log.error(
  63                                 "failed to update/publish error message(${messagePrioritization.id}) : " +
  64                                         "${sendException.message}", e
  65                             )
  66                         }
  67                     }
  68                 }
  69             }
  70         }
  71     }
  72
  73     /** Child will override this implementation , if necessary */
  74     open suspend fun handleAggregation(messageIds: List<String>) {
  75         log.info("messages($messageIds) aggregated")
  76         messageIds.forEach { id ->
  77             processorContext.forward(id, id, To.child(MessagePrioritizationConstants.PROCESSOR_OUTPUT))
  78         }
  79     }
  80 }