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 com.fasterxml.jackson.databind.node.MissingNode
  21 import com.fasterxml.jackson.databind.node.NullNode
  22 import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR
  23 import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.RestResourceSource
  24 import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.utils.ResourceAssignmentUtils
  25 import org.onap.ccsdk.cds.blueprintsprocessor.rest.service.BluePrintRestLibPropertyService
  26 import org.onap.ccsdk.cds.blueprintsprocessor.rest.service.BlueprintWebClientService
  27 import org.onap.ccsdk.cds.controllerblueprints.core.*
  28 import org.onap.ccsdk.cds.controllerblueprints.core.utils.JacksonUtils
  29 import org.onap.ccsdk.cds.controllerblueprints.resource.dict.ResourceAssignment
  30 import org.slf4j.LoggerFactory
  31 import org.springframework.beans.factory.config.ConfigurableBeanFactory
  32 import org.springframework.context.annotation.Scope
  33 import org.springframework.stereotype.Service
  34
  35 /**
  36  * RestResourceResolutionProcessor
  37  *
  38  * @author Kapil Singal
  39  */
  40 @Service("${PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-rest")
  41 @Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
  42 open class RestResourceResolutionProcessor(private val blueprintRestLibPropertyService: BluePrintRestLibPropertyService)
  43     : ResourceAssignmentProcessor() {
  44
  45     private val logger = LoggerFactory.getLogger(RestResourceResolutionProcessor::class.java)
  46
  47     override fun getName(): String {
  48         return "${PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-rest"
  49     }
  50
  51     override suspend fun processNB(resourceAssignment: ResourceAssignment) {
  52         try {
  53             validate(resourceAssignment)
  54
  55             // Check if It has Input
  56             val value = getFromInput(resourceAssignment)
  57             if (value == null || value is MissingNode || value is NullNode) {
  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 $dSource properties" }
  76                 val resolvedInputKeyMapping = resolveInputKeyMappingVariables(inputKeyMapping).toMutableMap()
  77
  78                 // Resolving content Variables
  79                 val payload = resolveFromInputKeyMapping(nullToEmpty(sourceProperties.payload), resolvedInputKeyMapping)
  80                 val urlPath =
  81                         resolveFromInputKeyMapping(checkNotNull(sourceProperties.urlPath), resolvedInputKeyMapping)
  82                 val verb = resolveFromInputKeyMapping(nullToEmpty(sourceProperties.verb), resolvedInputKeyMapping)
  83
  84                 logger.info("$dSource dictionary information : ($urlPath), ($inputKeyMapping), (${sourceProperties.outputKeyMapping})")
  85                 // Get the Rest Client Service
  86                 val restClientService = blueprintWebClientService(resourceAssignment, sourceProperties)
  87
  88                 val response = restClientService.exchangeResource(verb, urlPath, payload)
  89                 val responseStatusCode = response.status
  90                 val responseBody = response.body
  91                 val outputKeyMapping = sourceProperties.outputKeyMapping
  92                 if (responseStatusCode in 200..299 && outputKeyMapping.isNullOrEmpty()) {
  93                     logger.info("AS>> outputKeyMapping==null, will not populateResource")
  94                 } else if (responseStatusCode in 200..299 && !responseBody.isBlank()) {
  95                     populateResource(resourceAssignment, sourceProperties, responseBody, path)
  96                 } else {
  97                     val errMsg =
  98                             "Failed to get $dSource result for dictionary name ($dName) using urlPath ($urlPath) response_code: ($responseStatusCode)"
  99                     logger.warn(errMsg)
 100                     throw BluePrintProcessorException(errMsg)
 101                 }
 102             }
 103             // Check the value has populated for mandatory case
 104             ResourceAssignmentUtils.assertTemplateKeyValueNotNull(resourceAssignment)
 105         } catch (e: Exception) {
 106             ResourceAssignmentUtils.setFailedResourceDataValue(resourceAssignment, e.message)
 107             throw BluePrintProcessorException("Failed in template key ($resourceAssignment) assignments with: ${e.message}",
 108                     e)
 109         }
 110     }
 111
 112     fun blueprintWebClientService(resourceAssignment: ResourceAssignment,
 113                                   restResourceSource: RestResourceSource): BlueprintWebClientService {
 114         return if (isNotEmpty(restResourceSource.endpointSelector)) {
 115             val restPropertiesJson = raRuntimeService.resolveDSLExpression(restResourceSource.endpointSelector!!)
 116             blueprintRestLibPropertyService.blueprintWebClientService(restPropertiesJson)
 117         } else {
 118             blueprintRestLibPropertyService.blueprintWebClientService(resourceAssignment.dictionarySource!!)
 119         }
 120     }
 121
 122     @Throws(BluePrintProcessorException::class)
 123     private fun populateResource(resourceAssignment: ResourceAssignment, sourceProperties: RestResourceSource,
 124                                  restResponse: String, path: String) {
 125         val dName = resourceAssignment.dictionaryName
 126         val dSource = resourceAssignment.dictionarySource
 127         val type = nullToEmpty(resourceAssignment.property?.type)
 128         lateinit var entrySchemaType: String
 129
 130         val outputKeyMapping = checkNotNull(sourceProperties.outputKeyMapping) {
 131             "failed to get output-key-mappings for $dName under $dSource properties"
 132         }
 133         logger.info("Response processing type($type)")
 134
 135         val responseNode = checkNotNull(JacksonUtils.jsonNode(restResponse).at(path)) {
 136             "Failed to find path ($path) in response ($restResponse)"
 137         }
 138         logger.info("populating value for output mapping ($outputKeyMapping), from json ($responseNode)")
 139
 140         val parsedResponseNode = ResourceAssignmentUtils.parseResponseNode(responseNode, resourceAssignment,
 141                 raRuntimeService, outputKeyMapping)
 142
 143         // Set the List of Complex Values
 144         ResourceAssignmentUtils.setResourceDataValue(resourceAssignment, raRuntimeService, parsedResponseNode)
 145     }
 146
 147     @Throws(BluePrintProcessorException::class)
 148     private fun validate(resourceAssignment: ResourceAssignment) {
 149         checkNotEmpty(resourceAssignment.name) { "resource assignment template key is not defined" }
 150         checkNotEmpty(resourceAssignment.dictionaryName) {
 151             "resource assignment dictionary name is not defined for template key (${resourceAssignment.name})"
 152         }
 153         checkNotEmpty(resourceAssignment.dictionarySource) {
 154             "resource assignment dictionary source is not defined for template key (${resourceAssignment.name})"
 155         }
 156     }
 157
 158     override suspend fun recoverNB(runtimeException: RuntimeException, resourceAssignment: ResourceAssignment) {
 159         raRuntimeService.getBluePrintError().addError(runtimeException.message!!)
 160     }
 161
 162 }