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.controllerblueprints.core.interfaces
  19
  20 import kotlinx.coroutines.runBlocking
  21 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
  22 import java.util.function.Function
  23
  24
  25 interface BlueprintFunctionNode<T, R> : Function<T, R> {
  26
  27     fun getName(): String
  28
  29     @Throws(BluePrintProcessorException::class)
  30     fun prepareRequest(executionRequest: T): T = runBlocking {
  31         prepareRequestNB(executionRequest)
  32     }
  33
  34     @Throws(BluePrintProcessorException::class)
  35     fun process(executionRequest: T) = runBlocking {
  36         processNB(executionRequest)
  37     }
  38
  39     @Throws(BluePrintProcessorException::class)
  40     fun recover(runtimeException: RuntimeException, executionRequest: T) = runBlocking {
  41         recoverNB(runtimeException, executionRequest)
  42     }
  43
  44     @Throws(BluePrintProcessorException::class)
  45     fun prepareResponse(): R = runBlocking {
  46         prepareResponseNB()
  47     }
  48
  49     override fun apply(executionServiceInput: T): R {
  50         try {
  51             prepareRequest(executionServiceInput)
  52             process(executionServiceInput)
  53         } catch (runtimeException: RuntimeException) {
  54             recover(runtimeException, executionServiceInput)
  55         }
  56         return prepareResponse()
  57     }
  58
  59     @Throws(BluePrintProcessorException::class)
  60     suspend fun prepareRequestNB(executionRequest: T): T
  61
  62     @Throws(BluePrintProcessorException::class)
  63     suspend fun processNB(executionRequest: T)
  64
  65     @Throws(BluePrintProcessorException::class)
  66     suspend fun recoverNB(runtimeException: RuntimeException, executionRequest: T)
  67
  68     @Throws(BluePrintProcessorException::class)
  69     suspend fun prepareResponseNB(): R
  70
  71     @Throws(BluePrintProcessorException::class)
  72     suspend fun applyNB(t: T): R
  73 }