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/*
* Copyright © 2017-2018 AT&T Intellectual Property.
*
* 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.apps.controllerblueprints.resource.dict.service
import org.apache.commons.lang3.text.StrBuilder
import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintException
import org.onap.ccsdk.apps.controllerblueprints.core.utils.TopologicalSortingUtils
import org.onap.ccsdk.apps.controllerblueprints.resource.dict.ResourceAssignment
import org.onap.ccsdk.apps.controllerblueprints.resource.dict.validator.ResourceAssignmentValidator
import org.slf4j.LoggerFactory
import org.apache.commons.collections.CollectionUtils
import org.apache.commons.lang3.StringUtils
import java.io.Serializable
/**
* ResourceAssignmentValidationService.
*
* @author Brinda Santh
*/
interface ResourceAssignmentValidationService : Serializable {
@Throws(BluePrintException::class)
fun validate(resourceAssignments: List<ResourceAssignment>): Boolean
}
/**
* ResourceAssignmentValidationDefaultService.
*
* @author Brinda Santh
*/
open class ResourceAssignmentValidationDefaultService : ResourceAssignmentValidationService {
private val log = LoggerFactory.getLogger(ResourceAssignmentValidator::class.java)
open var resourceAssignments: List<ResourceAssignment> = arrayListOf()
open var resourceAssignmentMap: MutableMap<String, ResourceAssignment> = hashMapOf()
open val validationMessage = StrBuilder()
override fun validate(resourceAssignments: List<ResourceAssignment>): Boolean {
this.resourceAssignments = resourceAssignments
validateSources(resourceAssignments)
validateDuplicateDictionaryKeys()
validateCyclicDependency()
if (StringUtils.isNotBlank(validationMessage)) {
throw BluePrintException("Resource Assignment Validation :" + validationMessage.toString())
}
return true
}
open fun validateSources(resourceAssignments: List<ResourceAssignment>) {
log.info("validating resource assignment sources")
}
open fun validateDuplicateDictionaryKeys() {
val uniqueDictionaryKeys = hashSetOf<String>()
this.resourceAssignments.forEach { resourceAssignment ->
// Check Duplicate Names
if (!resourceAssignmentMap.containsKey(resourceAssignment.name)) {
resourceAssignmentMap[resourceAssignment.name] = resourceAssignment
} else {
validationMessage.appendln(String.format("Duplicate Assignment Template Key (%s) is Present",
resourceAssignment.name))
}
// Check duplicate Dictionary Keys
if (!uniqueDictionaryKeys.contains(resourceAssignment.dictionaryName!!)) {
uniqueDictionaryKeys.add(resourceAssignment.dictionaryName!!)
} else {
validationMessage.appendln(
String.format("Duplicate Assignment Dictionary Key (%s) present with Template Key (%s)",
resourceAssignment.dictionaryName, resourceAssignment.name))
}
}
}
open fun validateCyclicDependency() {
val startResourceAssignment = ResourceAssignment()
startResourceAssignment.name = "*"
val topologySorting = TopologicalSortingUtils<ResourceAssignment>()
this.resourceAssignmentMap.forEach { assignmentKey, assignment ->
if (CollectionUtils.isNotEmpty(assignment.dependencies)) {
for (dependency in assignment.dependencies!!) {
topologySorting.add(resourceAssignmentMap[dependency]!!, assignment)
}
} else {
topologySorting.add(startResourceAssignment, assignment)
}
}
if (!topologySorting.isDag) {
val graph = getTopologicalGraph(topologySorting)
validationMessage.appendln("Cyclic Dependency :$graph")
}
}
open fun getTopologicalGraph(topologySorting: TopologicalSortingUtils<ResourceAssignment>): String {
val s = StringBuilder()
val neighbors = topologySorting.getNeighbors()
neighbors.forEach { v, vs ->
if (v.name == "*") {
s.append("\n * -> [")
for (resourceAssignment in vs) {
s.append("(" + resourceAssignment.dictionaryName + ":" + resourceAssignment.name
+ "),")
}
s.append("]")
} else {
s.append("\n (" + v.dictionaryName + ":" + v.name + ") -> [")
for (resourceAssignment in vs) {
s.append("(" + resourceAssignment.dictionaryName + ":" + resourceAssignment.name
+ "),")
}
s.append("]")
}
}
return s.toString()
}
}
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