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.ArrayNode
  21 import com.fasterxml.jackson.databind.node.MissingNode
  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.onap.ccsdk.cds.controllerblueprints.resource.dict.ResourceDictionaryConstants
  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             val value = getFromInput(resourceAssignment)
  58             if (value == null || value is MissingNode) {
  59                 val dName = resourceAssignment.dictionaryName
  60                 val dSource = resourceAssignment.dictionarySource
  61                 val resourceDefinition = resourceDictionaries[dName]
  62                         ?: throw BluePrintProcessorException("couldn't get resource dictionary definition for $dName")
  63
  64                 val resourceSource = resourceDefinition.sources[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                 if (response.isBlank()) {
  90                     logger.warn("Failed to get $dSource result for dictionary name ($dName) using urlPath ($urlPath)")
  91                 } else {
  92                     populateResource(resourceAssignment, sourceProperties, response, path)
  93                 }
  94             }
  95             // Check the value has populated for mandatory case
  96             ResourceAssignmentUtils.assertTemplateKeyValueNotNull(resourceAssignment)
  97         } catch (e: Exception) {
  98             ResourceAssignmentUtils.setFailedResourceDataValue(resourceAssignment, e.message)
  99             throw BluePrintProcessorException("Failed in template key ($resourceAssignment) assignments with: ${e.message}",
 100                     e)
 101         }
 102     }
 103
 104     fun blueprintWebClientService(resourceAssignment: ResourceAssignment,
 105                                           restResourceSource: RestResourceSource): BlueprintWebClientService {
 106         return if (isNotEmpty(restResourceSource.endpointSelector)) {
 107             val restPropertiesJson = raRuntimeService.resolveDSLExpression(restResourceSource.endpointSelector!!)
 108             blueprintRestLibPropertyService.blueprintWebClientService(restPropertiesJson)
 109         } else {
 110             blueprintRestLibPropertyService.blueprintWebClientService(resourceAssignment.dictionarySource!!)
 111         }
 112     }
 113
 114     @Throws(BluePrintProcessorException::class)
 115     private fun populateResource(resourceAssignment: ResourceAssignment, sourceProperties: RestResourceSource,
 116                                  restResponse: String, path: String) {
 117         val dName = resourceAssignment.dictionaryName
 118         val dSource = resourceAssignment.dictionarySource
 119         val type = nullToEmpty(resourceAssignment.property?.type)
 120         lateinit var entrySchemaType: String
 121
 122         val outputKeyMapping = checkNotNull(sourceProperties.outputKeyMapping) {
 123             "failed to get output-key-mappings for $dName under $dSource properties"
 124         }
 125         logger.info("Response processing type($type)")
 126
 127         val responseNode = checkNotNull(JacksonUtils.jsonNode(restResponse).at(path)) {
 128             "Failed to find path ($path) in response ($restResponse)"
 129         }
 130         logger.info("populating value for output mapping ($outputKeyMapping), from json ($responseNode)")
 131
 132
 133         when (type) {
 134             in BluePrintTypes.validPrimitiveTypes() -> {
 135                 logger.info("For template key (${resourceAssignment.name}) setting value as ($responseNode)")
 136                 ResourceAssignmentUtils.setResourceDataValue(resourceAssignment, raRuntimeService, responseNode)
 137             }
 138             in BluePrintTypes.validCollectionTypes() -> {
 139                 // Array Types
 140                 entrySchemaType = checkNotEmpty(resourceAssignment.property?.entrySchema?.type) {
 141                     "Entry schema is not defined for dictionary ($dName) info"
 142                 }
 143                 val arrayNode = responseNode as ArrayNode
 144
 145                 if (entrySchemaType !in BluePrintTypes.validPrimitiveTypes()) {
 146
 147                     val responseArrayNode = responseNode.toList()
 148                     for (responseSingleJsonNode in responseArrayNode) {
 149
 150                         val arrayChildNode = JacksonUtils.objectMapper.createObjectNode()
 151
 152                         outputKeyMapping.map {
 153                             val responseKeyValue = responseSingleJsonNode.get(it.key)
 154                             val propertyTypeForDataType = ResourceAssignmentUtils
 155                                     .getPropertyType(raRuntimeService, entrySchemaType, it.key)
 156
 157                             logger.info("For List Type Resource: key (${it.key}), value ($responseKeyValue), " +
 158                                     "type  ({$propertyTypeForDataType})")
 159
 160                             JacksonUtils.populateJsonNodeValues(it.value,
 161                                     responseKeyValue, propertyTypeForDataType, arrayChildNode)
 162                         }
 163                         arrayNode.add(arrayChildNode)
 164                     }
 165                 }
 166                 logger.info("For template key (${resourceAssignment.name}) setting value as ($arrayNode)")
 167                 // Set the List of Complex Values
 168                 ResourceAssignmentUtils.setResourceDataValue(resourceAssignment, raRuntimeService, arrayNode)
 169             }
 170             else -> {
 171                 // Complex Types
 172                 entrySchemaType = checkNotEmpty(resourceAssignment.property?.type) {
 173                     "Entry schema is not defined for dictionary ($dName) info"
 174                 }
 175                 val objectNode = JacksonUtils.objectMapper.createObjectNode()
 176                 outputKeyMapping.map {
 177                     val responseKeyValue = responseNode.get(it.key)
 178                     val propertyTypeForDataType = ResourceAssignmentUtils
 179                             .getPropertyType(raRuntimeService, entrySchemaType, it.key)
 180
 181                     logger.info("For List Type Resource: key (${it.key}), value ($responseKeyValue), type  ({$propertyTypeForDataType})")
 182                     JacksonUtils.populateJsonNodeValues(it.value, responseKeyValue, propertyTypeForDataType, objectNode)
 183                 }
 184
 185                 logger.info("For template key (${resourceAssignment.name}) setting value as ($objectNode)")
 186                 // Set the List of Complex Values
 187                 ResourceAssignmentUtils.setResourceDataValue(resourceAssignment, raRuntimeService, objectNode)
 188             }
 189         }
 190     }
 191
 192     @Throws(BluePrintProcessorException::class)
 193     private fun validate(resourceAssignment: ResourceAssignment) {
 194         checkNotEmpty(resourceAssignment.name) { "resource assignment template key is not defined" }
 195         checkNotEmpty(resourceAssignment.dictionaryName) {
 196             "resource assignment dictionary name is not defined for template key (${resourceAssignment.name})"
 197         }
 198         checkNotEmpty(resourceAssignment.dictionarySource) {
 199             "resource assignment dictionary source is not defined for template key (${resourceAssignment.name})"
 200         }
 201     }
 202
 203     override suspend fun recoverNB(runtimeException: RuntimeException, resourceAssignment: ResourceAssignment) {
 204         raRuntimeService.getBluePrintError().addError(runtimeException.message!!)
 205     }
 206
 207 }