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/*
* Copyright © 2017-2018 AT&T Intellectual Property.
* Modifications Copyright © 2018-2019 IBM, Bell Canada
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution
import kotlinx.coroutines.async
import kotlinx.coroutines.awaitAll
import kotlinx.coroutines.coroutineScope
import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.db.ResourceResolutionResultService
import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.processor.ResourceAssignmentProcessor
import org.onap.ccsdk.cds.blueprintsprocessor.functions.resource.resolution.utils.ResourceAssignmentUtils
import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
import org.onap.ccsdk.cds.controllerblueprints.core.checkNotEmpty
import org.onap.ccsdk.cds.controllerblueprints.core.service.BluePrintRuntimeService
import org.onap.ccsdk.cds.controllerblueprints.core.service.BluePrintTemplateService
import org.onap.ccsdk.cds.controllerblueprints.core.utils.JacksonUtils
import org.onap.ccsdk.cds.controllerblueprints.resource.dict.ResourceAssignment
import org.onap.ccsdk.cds.controllerblueprints.resource.dict.ResourceDefinition
import org.onap.ccsdk.cds.controllerblueprints.resource.dict.utils.BulkResourceSequencingUtils
import org.slf4j.LoggerFactory
import org.springframework.context.ApplicationContext
import org.springframework.stereotype.Service
interface ResourceResolutionService {
fun registeredResourceSources(): List<String>
suspend fun resolveFromDatabase(bluePrintRuntimeService: BluePrintRuntimeService<*>, artifactTemplate: String,
resolutionKey: String): String
suspend fun resolveResources(bluePrintRuntimeService: BluePrintRuntimeService<*>, nodeTemplateName: String,
artifactNames: List<String>, properties: Map<String, Any>): MutableMap<String, String>
suspend fun resolveResources(bluePrintRuntimeService: BluePrintRuntimeService<*>, nodeTemplateName: String,
artifactPrefix: String, properties: Map<String, Any>): String
suspend fun resolveResources(bluePrintRuntimeService: BluePrintRuntimeService<*>, nodeTemplateName: String,
artifactMapping: String, artifactTemplate: String?): String
suspend fun resolveResourceAssignments(blueprintRuntimeService: BluePrintRuntimeService<*>,
resourceDefinitions: MutableMap<String, ResourceDefinition>,
resourceAssignments: MutableList<ResourceAssignment>,
identifierName: String)
}
@Service(ResourceResolutionConstants.SERVICE_RESOURCE_RESOLUTION)
open class ResourceResolutionServiceImpl(private var applicationContext: ApplicationContext,
private var resolutionResultService: ResourceResolutionResultService) :
ResourceResolutionService {
private val log = LoggerFactory.getLogger(ResourceResolutionService::class.java)
override fun registeredResourceSources(): List<String> {
return applicationContext.getBeanNamesForType(ResourceAssignmentProcessor::class.java)
.filter { it.startsWith(ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR) }
.map { it.substringAfter(ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR) }
}
override suspend fun resolveFromDatabase(bluePrintRuntimeService: BluePrintRuntimeService<*>,
artifactTemplate: String,
resolutionKey: String): String {
return resolutionResultService.read(bluePrintRuntimeService, artifactTemplate, resolutionKey)
}
override suspend fun resolveResources(bluePrintRuntimeService: BluePrintRuntimeService<*>, nodeTemplateName: String,
artifactNames: List<String>, properties: Map<String, Any>): MutableMap<String, String> {
val resolvedParams: MutableMap<String, String> = hashMapOf()
artifactNames.forEach { artifactName ->
val resolvedContent = resolveResources(bluePrintRuntimeService, nodeTemplateName,
artifactName, properties)
resolvedParams[artifactName] = resolvedContent
}
return resolvedParams
}
override suspend fun resolveResources(bluePrintRuntimeService: BluePrintRuntimeService<*>, nodeTemplateName: String,
artifactPrefix: String, properties: Map<String, Any>): String {
// Velocity Artifact Definition Name
val artifactTemplate = "$artifactPrefix-template"
// Resource Assignment Artifact Definition Name
val artifactMapping = "$artifactPrefix-mapping"
val result = resolveResources(bluePrintRuntimeService, nodeTemplateName,
artifactMapping, artifactTemplate)
if (properties.containsKey(ResourceResolutionConstants.RESOURCE_RESOLUTION_INPUT_STORE_RESULT)
&& properties[ResourceResolutionConstants.RESOURCE_RESOLUTION_INPUT_STORE_RESULT] as Boolean) {
resolutionResultService.write(properties, result, bluePrintRuntimeService, artifactPrefix)
log.info("resolution saved into database successfully : ($properties)")
}
return result
}
override suspend fun resolveResources(bluePrintRuntimeService: BluePrintRuntimeService<*>, nodeTemplateName: String,
artifactMapping: String, artifactTemplate: String?): String {
val resolvedContent: String
log.info("Resolving resource for template artifact($artifactTemplate) with resource assignment artifact($artifactMapping)")
val identifierName = artifactTemplate ?: "no-template"
val resourceAssignmentContent =
bluePrintRuntimeService.resolveNodeTemplateArtifact(nodeTemplateName, artifactMapping)
val resourceAssignments: MutableList<ResourceAssignment> =
JacksonUtils.getListFromJson(resourceAssignmentContent, ResourceAssignment::class.java)
as? MutableList<ResourceAssignment>
?: throw BluePrintProcessorException("couldn't get Dictionary Definitions")
// Get the Resource Dictionary Name
val resourceDefinitions: MutableMap<String, ResourceDefinition> = ResourceAssignmentUtils
.resourceDefinitions(bluePrintRuntimeService.bluePrintContext().rootPath)
// Resolve resources
resolveResourceAssignments(bluePrintRuntimeService, resourceDefinitions, resourceAssignments, identifierName)
val resolvedParamJsonContent =
ResourceAssignmentUtils.generateResourceDataForAssignments(resourceAssignments.toList())
// Check Template is there
if (artifactTemplate != null) {
val blueprintTemplateService = BluePrintTemplateService(bluePrintRuntimeService, nodeTemplateName, artifactTemplate)
val templateContent =
bluePrintRuntimeService.resolveNodeTemplateArtifact(nodeTemplateName, artifactTemplate)
resolvedContent = blueprintTemplateService.generateContent(templateContent, resolvedParamJsonContent)
} else {
resolvedContent = resolvedParamJsonContent
}
return resolvedContent
}
/**
* Iterate the Batch, get the Resource Assignment, dictionary Name, Look for the Resource definition for the
* name, then get the type of the Resource Definition, Get the instance for the Resource Type and process the
* request.
*/
override suspend fun resolveResourceAssignments(blueprintRuntimeService: BluePrintRuntimeService<*>,
resourceDefinitions: MutableMap<String, ResourceDefinition>,
resourceAssignments: MutableList<ResourceAssignment>,
identifierName: String) {
val bulkSequenced = BulkResourceSequencingUtils.process(resourceAssignments)
val resourceAssignmentRuntimeService =
ResourceAssignmentUtils.transformToRARuntimeService(blueprintRuntimeService, identifierName)
coroutineScope {
bulkSequenced.forEach { batchResourceAssignments ->
// Execute Non Dependent Assignments in parallel ( ie asynchronously )
val deferred = batchResourceAssignments.filter { it.name != "*" && it.name != "start" }
.map { resourceAssignment ->
async {
val dictionaryName = resourceAssignment.dictionaryName
val dictionarySource = resourceAssignment.dictionarySource
/**
* Get the Processor name
*/
val processorName = processorName(dictionaryName!!, dictionarySource!!, resourceDefinitions)
val resourceAssignmentProcessor =
applicationContext.getBean(processorName) as? ResourceAssignmentProcessor
?: throw BluePrintProcessorException("failed to get resource processor ($processorName) " +
"for resource assignment(${resourceAssignment.name})")
try {
// Set BluePrint Runtime Service
resourceAssignmentProcessor.raRuntimeService = resourceAssignmentRuntimeService
// Set Resource Dictionaries
resourceAssignmentProcessor.resourceDictionaries = resourceDefinitions
// Invoke Apply Method
resourceAssignmentProcessor.applyNB(resourceAssignment)
// Set errors from RA
blueprintRuntimeService.setBluePrintError(resourceAssignmentRuntimeService.getBluePrintError())
} catch (e: RuntimeException) {
throw BluePrintProcessorException(e)
}
}
}
log.debug("Resolving (${deferred.size})resources parallel.")
deferred.awaitAll()
}
}
}
/**
* If the Source instance is "input", then it is not mandatory to have source Resource Definition, So it can
* derive the default input processor.
*/
private fun processorName(dictionaryName: String, dictionarySource: String,
resourceDefinitions: MutableMap<String, ResourceDefinition>): String {
val processorName: String = when (dictionarySource) {
"input" -> {
"${ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-input"
}
"default" -> {
"${ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR}source-default"
}
else -> {
val resourceDefinition = resourceDefinitions[dictionaryName]
?: throw BluePrintProcessorException("couldn't get resource dictionary definition for $dictionaryName")
val resourceSource = resourceDefinition.sources[dictionarySource]
?: throw BluePrintProcessorException("couldn't get resource definition $dictionaryName source($dictionarySource)")
ResourceResolutionConstants.PREFIX_RESOURCE_RESOLUTION_PROCESSOR.plus(resourceSource.type)
}
}
checkNotEmpty(processorName) {
"couldn't get processor name for resource dictionary definition($dictionaryName) source($dictionarySource)"
}
return processorName
}
}
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