ms/blueprintsprocessor/functions/resource-resolution/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/functions/resource/resolution/processor/RestResourceResolutionProcessor.kt

   1 /*
   2  *  Copyright © 2018 IBM.
   3  *  Modifications Copyright © 2017-2019 AT&T, Bell Canada
   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.blueprintsprocessor.functions.resource.resolution.processor
  19
  20 import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR
  21 import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.RestResourceSource
  22 import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.utils.ResourceAssignmentUtils
  23 import org.onap.ccsdk.cds.blueprintsprocessor.rest.service.BluePrintRestLibPropertyService
  24 import org.onap.ccsdk.cds.blueprintsprocessor.rest.service.BlueprintWebClientService
  25 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
  26 import org.onap.ccsdk.cds.controllerblueprints.core.checkNotEmpty
  27 import org.onap.ccsdk.cds.controllerblueprints.core.isNotEmpty
  28 import org.onap.ccsdk.cds.controllerblueprints.core.nullToEmpty
  29 import org.onap.ccsdk.cds.controllerblueprints.core.utils.JacksonUtils
  30 import org.onap.ccsdk.cds.controllerblueprints.resource.dict.ResourceAssignment
  31 import org.slf4j.LoggerFactory
  32 import org.springframework.beans.factory.config.ConfigurableBeanFactory
  33 import org.springframework.context.annotation.Scope
  34 import org.springframework.stereotype.Service
  35
  36 /**
  37  * RestResourceResolutionProcessor
  38  *
  39  * @author Kapil Singal
  40  */
  41 @Service("${PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-rest")
  42 @Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
  43 open class RestResourceResolutionProcessor(private val blueprintRestLibPropertyService: BluePrintRestLibPropertyService) :
  44     ResourceAssignmentProcessor() {
  45
  46     private val logger = LoggerFactory.getLogger(RestResourceResolutionProcessor::class.java)
  47
  48     override fun getName(): String {
  49         return "${PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-rest"
  50     }
  51
  52     override suspend fun processNB(resourceAssignment: ResourceAssignment) {
  53         try {
  54             validate(resourceAssignment)
  55
  56             // Check if It has Input
  57             if (!setFromInput(resourceAssignment)) {
  58                 val dName = resourceAssignment.dictionaryName!!
  59                 val dSource = resourceAssignment.dictionarySource!!
  60                 val resourceDefinition = resourceDefinition(dName)
  61
  62                 /** Check Resource Assignment has the source definitions, If not get from Resource Definitions **/
  63                 val resourceSource = resourceAssignment.dictionarySourceDefinition
  64                     ?: resourceDefinition?.sources?.get(dSource)
  65                     ?: throw BluePrintProcessorException("couldn't get resource definition $dName source($dSource)")
  66
  67                 val resourceSourceProperties =
  68                     checkNotNull(resourceSource.properties) { "failed to get source properties for $dName " }
  69
  70                 val sourceProperties =
  71                     JacksonUtils.getInstanceFromMap(resourceSourceProperties, RestResourceSource::class.java)
  72
  73                 val path = nullToEmpty(sourceProperties.path)
  74                 val inputKeyMapping =
  75                     checkNotNull(sourceProperties.inputKeyMapping) { "failed to get input-key-mappings for $dName under $dSource properties" }
  76                 val resolvedInputKeyMapping = resolveInputKeyMappingVariables(inputKeyMapping).toMutableMap()
  77
  78                 // Resolving content Variables
  79                 val payload = resolveFromInputKeyMapping(nullToEmpty(sourceProperties.payload), resolvedInputKeyMapping)
  80                 val urlPath =
  81                     resolveFromInputKeyMapping(checkNotNull(sourceProperties.urlPath), resolvedInputKeyMapping)
  82                 val verb = resolveFromInputKeyMapping(nullToEmpty(sourceProperties.verb), resolvedInputKeyMapping)
  83
  84                 logger.info("RestResource ($dSource) dictionary information: " +
  85                         "URL:($urlPath), input-key-mapping:($inputKeyMapping), output-key-mapping:(${sourceProperties.outputKeyMapping})")
  86                 val requestHeaders = sourceProperties.headers
  87                 logger.info("$dSource dictionary information : ($urlPath), ($inputKeyMapping), (${sourceProperties.outputKeyMapping})")
  88                 // Get the Rest Client Service
  89                 val restClientService = blueprintWebClientService(resourceAssignment, sourceProperties)
  90
  91                 val response = restClientService.exchangeResource(verb, urlPath, payload, requestHeaders.toMap())
  92                 val responseStatusCode = response.status
  93                 val responseBody = response.body
  94                 val outputKeyMapping = sourceProperties.outputKeyMapping
  95                 if (responseStatusCode in 200..299 && outputKeyMapping.isNullOrEmpty()) {
  96                     logger.info("AS>> outputKeyMapping==null, will not populateResource")
  97                 } else if (responseStatusCode in 200..299 && !responseBody.isBlank()) {
  98                     populateResource(resourceAssignment, sourceProperties, responseBody, path)
  99                 } else {
 100                     val errMsg =
 101                         "Failed to get $dSource result for dictionary name ($dName) using urlPath ($urlPath) response_code: ($responseStatusCode)"
 102                     logger.warn(errMsg)
 103                     throw BluePrintProcessorException(errMsg)
 104                 }
 105             }
 106             // Check the value has populated for mandatory case
 107             ResourceAssignmentUtils.assertTemplateKeyValueNotNull(resourceAssignment)
 108         } catch (e: Exception) {
 109             ResourceAssignmentUtils.setFailedResourceDataValue(resourceAssignment, e.message)
 110             throw BluePrintProcessorException("Failed in template key ($resourceAssignment) assignments with: ${e.message}", e)
 111         }
 112     }
 113
 114     fun blueprintWebClientService(
 115         resourceAssignment: ResourceAssignment,
 116         restResourceSource: RestResourceSource
 117     ): BlueprintWebClientService {
 118         return if (isNotEmpty(restResourceSource.endpointSelector)) {
 119             val restPropertiesJson = raRuntimeService.resolveDSLExpression(restResourceSource.endpointSelector!!)
 120             blueprintRestLibPropertyService.blueprintWebClientService(restPropertiesJson)
 121         } else {
 122             blueprintRestLibPropertyService.blueprintWebClientService(resourceAssignment.dictionarySource!!)
 123         }
 124     }
 125
 126     @Throws(BluePrintProcessorException::class)
 127     private fun populateResource(
 128         resourceAssignment: ResourceAssignment, sourceProperties: RestResourceSource,
 129         restResponse: String, path: String
 130     ) {
 131         val dName = resourceAssignment.dictionaryName
 132         val dSource = resourceAssignment.dictionarySource
 133         val type = nullToEmpty(resourceAssignment.property?.type)
 134         val metadata = resourceAssignment.property!!.metadata
 135
 136         val outputKeyMapping = checkNotNull(sourceProperties.outputKeyMapping) {
 137             "failed to get output-key-mappings for $dName under $dSource properties"
 138         }
 139         logger.info("Response processing type ($type)")
 140
 141         val responseNode = checkNotNull(JacksonUtils.jsonNode(restResponse).at(path)) {
 142             "Failed to find path ($path) in response ($restResponse)"
 143         }
 144
 145         val valueToPrint = ResourceAssignmentUtils.getValueToLog(metadata, responseNode)
 146         logger.info("populating value for output mapping ($outputKeyMapping), from json ($valueToPrint)")
 147
 148         val parsedResponseNode = ResourceAssignmentUtils.parseResponseNode(
 149             responseNode, resourceAssignment,
 150             raRuntimeService, outputKeyMapping
 151         )
 152
 153         // Set the List of Complex Values
 154         ResourceAssignmentUtils.setResourceDataValue(resourceAssignment, raRuntimeService, parsedResponseNode)
 155     }
 156
 157     @Throws(BluePrintProcessorException::class)
 158     private fun validate(resourceAssignment: ResourceAssignment) {
 159         checkNotEmpty(resourceAssignment.name) { "resource assignment template key is not defined" }
 160         checkNotEmpty(resourceAssignment.dictionaryName) {
 161             "resource assignment dictionary name is not defined for template key (${resourceAssignment.name})"
 162         }
 163         checkNotEmpty(resourceAssignment.dictionarySource) {
 164             "resource assignment dictionary source is not defined for template key (${resourceAssignment.name})"
 165         }
 166     }
 167
 168     override suspend fun recoverNB(runtimeException: RuntimeException, resourceAssignment: ResourceAssignment) {
 169         raRuntimeService.getBluePrintError().addError(runtimeException.message!!)
 170     }
 171
 172 }