vid-app-common/src/main/java/org/onap/vid/job/command/ResourceCommand.kt

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * VID
   4  * ================================================================================
   5  * Copyright (C) 2017 - 2019 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.vid.job.command
  22
  23
  24 import com.fasterxml.jackson.module.kotlin.convertValue
  25 import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate
  26 import org.onap.vid.changeManagement.RequestDetailsWrapper
  27 import org.onap.vid.exceptions.AbortingException
  28 import org.onap.vid.exceptions.TryAgainException
  29 import org.onap.vid.job.*
  30 import org.onap.vid.job.Job.JobStatus
  31 import org.onap.vid.job.impl.JobSharedData
  32 import org.onap.vid.model.Action
  33 import org.onap.vid.model.RequestReferencesContainer
  34 import org.onap.vid.model.serviceInstantiation.BaseResource
  35 import org.onap.vid.mso.RestMsoImplementation
  36 import org.onap.vid.utils.JACKSON_OBJECT_MAPPER
  37 import org.onap.vid.utils.getEnumFromMapOfStrings
  38 import org.springframework.http.HttpMethod
  39 import java.util.*
  40
  41
  42 const val INTERNAL_STATE = "internalState"
  43 const val ACTION_PHASE = "actionPhase"
  44 const val CHILD_JOBS = "childJobs"
  45 const val MSO_RESOURCE_ID = "msoResourceIds"
  46 const val CUMULATIVE_STATUS = "cumulativeStatus"
  47
  48 enum class InternalState constructor(val immediate:Boolean=false) {
  49     INITIAL,
  50     CREATING_CHILDREN(true),
  51     WATCHING,
  52     DELETE_MYSELF,
  53     CREATE_MYSELF,
  54     IN_PROGRESS,
  55     TERMINAL,
  56     RESUME_MYSELF,
  57     REPLACE_MYSELF,
  58 }
  59
  60 data class NextInternalState(val nextActionPhase: Action, val nextInternalState: InternalState)
  61
  62
  63 data class MsoRestCallPlan(
  64         val httpMethod: HttpMethod,
  65         val path: String,
  66         val payload: Optional<RequestDetailsWrapper<out Any>>,
  67         val userId: Optional<String>,
  68         val actionDescription: String
  69 )
  70
  71 abstract class ResourceCommand(
  72         protected val restMso: RestMsoImplementation,
  73         protected val inProgressStatusService: InProgressStatusService,
  74         protected val msoResultHandlerService: MsoResultHandlerService,
  75         protected val watchChildrenJobsBL: WatchChildrenJobsBL,
  76         private val jobsBrokerService: JobsBrokerService,
  77         private val jobAdapter: JobAdapter
  78         ) : CommandBase(), JobCommand {
  79
  80     companion object {
  81         private val Logger = EELFLoggerDelegate.getLogger(ResourceCommand::class.java)
  82     }
  83
  84     abstract fun createChildren():JobStatus
  85
  86     abstract fun planCreateMyselfRestCall(commandParentData: CommandParentData, request: JobAdapter.AsyncJobRequest, userId: String, testApi: String?): MsoRestCallPlan
  87
  88     abstract fun planDeleteMyselfRestCall(commandParentData: CommandParentData, request: JobAdapter.AsyncJobRequest, userId: String): MsoRestCallPlan
  89
  90     private val commandByInternalState: Map<InternalState, () -> JobStatus> = hashMapOf(
  91             Pair(InternalState.CREATING_CHILDREN, ::createChildren),
  92             Pair(InternalState.WATCHING, ::watchChildren),
  93             Pair(InternalState.CREATE_MYSELF, ::createMyself),
  94             Pair(InternalState.RESUME_MYSELF, ::resumeMyself),
  95             Pair(InternalState.DELETE_MYSELF, ::deleteMyself),
  96             Pair(InternalState.IN_PROGRESS, ::inProgress),
  97             Pair(InternalState.REPLACE_MYSELF, ::replaceMyself)
  98     )
  99
 100     private lateinit var internalState:InternalState
 101     protected lateinit var actionPhase: Action
 102     protected var commandParentData: CommandParentData = CommandParentData()
 103     protected var msoResourceIds: MsoResourceIds = EMPTY_MSO_RESOURCE_ID
 104     protected var childJobs:List<String> = emptyList()
 105     private lateinit var cumulativeStatus:JobStatus
 106
 107
 108     override fun call(): NextCommand {
 109         var jobStatus:JobStatus = if (internalState!=InternalState.TERMINAL) invokeCommand() else cumulativeStatus
 110         jobStatus = comulateStatusAndUpdatePropertyIfFinal(jobStatus)
 111
 112         try {
 113             Logger.debug("job: ${this.javaClass.simpleName} ${sharedData.jobUuid} $actionPhase ${getActionType()} $internalState $jobStatus $childJobs")
 114         } catch (e:Exception) { /* do nothing. Just failed to log...*/}
 115
 116         if (shallStopJob(jobStatus)) {
 117             onFinal(jobStatus)
 118             return NextCommand(jobStatus)
 119         }
 120
 121         val (nextActionPhase, nextInternalState) = calcNextInternalState(jobStatus, internalState, actionPhase)
 122         Logger.debug("next state for job ${sharedData.jobUuid} is $nextInternalState")
 123         actionPhase = nextActionPhase
 124         internalState = nextInternalState
 125
 126         if (internalState==InternalState.TERMINAL) {
 127             onFinal(jobStatus)
 128             return NextCommand(jobStatus)
 129         }
 130
 131         jobStatus = getExternalInProgressStatus()
 132         Logger.debug("next status for job ${sharedData.jobUuid} is $jobStatus")
 133 //        if (internalState.immediate) return call() //shortcut instead of execute another command
 134         return NextCommand(jobStatus, this)
 135     }
 136
 137     //we want to stop in faliures, except for service witn no action, since service with no action trigger 2 phases (delete and create)
 138     protected fun shallStopJob(jobStatus: JobStatus) =
 139             jobStatus.isFailure && !(isServiceCommand() && getActionType()==Action.None)
 140
 141     //this method is used to expose the job status after successful completion of current state
 142     //should be override by subclass (like ServiceCommand) that need to return other default job status
 143     protected open fun getExternalInProgressStatus() = JobStatus.RESOURCE_IN_PROGRESS
 144
 145     private fun invokeCommand(): JobStatus {
 146         return try {
 147             commandByInternalState.getOrDefault(internalState, ::throwIllegalState).invoke()
 148         }
 149         catch (exception: TryAgainException) {
 150             Logger.warn("caught TryAgainException. Set job status to IN_PROGRESS")
 151             JobStatus.IN_PROGRESS
 152         }
 153         catch (exception: AbortingException) {
 154             Logger.error("caught AbortingException. Set job status to FAILED")
 155             JobStatus.FAILED;
 156         }
 157     }
 158
 159     private fun throwIllegalState():JobStatus {
 160              throw IllegalStateException("can't find action for pashe $actionPhase and state $internalState")
 161     }
 162
 163     private fun calcNextInternalState(jobStatus: JobStatus, internalState: InternalState, actionPhase: Action): NextInternalState {
 164
 165         val nextInternalState = when (actionPhase) {
 166             Action.Delete -> calcNextStateDeletePhase(jobStatus, internalState)
 167             Action.Create -> calcNextStateCreatePhase(jobStatus, internalState)
 168             else -> InternalState.TERMINAL
 169         }
 170
 171         if (nextInternalState == InternalState.TERMINAL
 172                 && actionPhase == Action.Delete
 173                 && isServiceCommand()) {
 174             // Loop over to "Create" phase
 175             return NextInternalState(Action.Create, InternalState.INITIAL)
 176         }
 177
 178         return NextInternalState(actionPhase, nextInternalState)
 179
 180     }
 181
 182     //no need to refer to failed (final) states here
 183     //This method is called only for non final states or COMPLETED
 184     protected fun calcNextStateDeletePhase(jobStatus: JobStatus, internalState: InternalState): InternalState {
 185         return when (internalState) {
 186
 187             InternalState.CREATING_CHILDREN -> InternalState.WATCHING
 188
 189             InternalState.WATCHING -> {
 190                 when {
 191                     !jobStatus.isFinal -> InternalState.WATCHING
 192                     isNeedToDeleteMyself() -> InternalState.DELETE_MYSELF
 193                     else -> InternalState.TERMINAL
 194                 }
 195             }
 196
 197             InternalState.DELETE_MYSELF -> InternalState.IN_PROGRESS
 198
 199             InternalState.IN_PROGRESS -> {
 200                 if (jobStatus == JobStatus.COMPLETED) InternalState.TERMINAL else InternalState.IN_PROGRESS
 201             }
 202
 203             else -> InternalState.TERMINAL
 204         }
 205     }
 206
 207     protected fun calcNextStateCreatePhase(jobStatus: JobStatus, internalState: InternalState): InternalState {
 208         return when (internalState) {
 209
 210             InternalState.CREATE_MYSELF -> when (jobStatus) {
 211                 JobStatus.IN_PROGRESS -> InternalState.CREATE_MYSELF
 212                 else -> InternalState.IN_PROGRESS
 213             }
 214
 215             InternalState.RESUME_MYSELF -> when (jobStatus) {
 216                 JobStatus.IN_PROGRESS -> InternalState.RESUME_MYSELF
 217                 else -> InternalState.IN_PROGRESS
 218             }
 219
 220             InternalState.REPLACE_MYSELF -> when (jobStatus) {
 221                 JobStatus.IN_PROGRESS -> InternalState.REPLACE_MYSELF
 222                 else -> InternalState.IN_PROGRESS
 223             }
 224
 225             InternalState.IN_PROGRESS -> {
 226                 when {
 227                     jobStatus != JobStatus.COMPLETED -> InternalState.IN_PROGRESS
 228                     isDescendantHasAction(Action.Create) -> InternalState.CREATING_CHILDREN
 229                     isDescendantHasAction(Action.Replace) -> InternalState.CREATING_CHILDREN
 230                     else -> InternalState.TERMINAL
 231                 }
 232             }
 233
 234             InternalState.CREATING_CHILDREN -> InternalState.WATCHING
 235
 236             InternalState.WATCHING -> {
 237                 when {
 238                     !jobStatus.isFinal -> InternalState.WATCHING
 239                     else -> InternalState.TERMINAL
 240                 }
 241             }
 242
 243             else -> InternalState.TERMINAL
 244         }
 245     }
 246
 247     override fun getData(): Map<String, Any?> {
 248         return mapOf(
 249                 ACTION_PHASE to actionPhase,
 250                 INTERNAL_STATE to internalState,
 251                 MSO_RESOURCE_ID to msoResourceIds,
 252                 CHILD_JOBS to childJobs,
 253                 CUMULATIVE_STATUS to cumulativeStatus
 254         ) + commandParentData.parentData
 255     }
 256
 257     override fun init(sharedData: JobSharedData, commandData: Map<String, Any>): ResourceCommand {
 258         init(sharedData)
 259         val resourceIdsRaw:Any? = commandData[MSO_RESOURCE_ID]
 260         commandParentData.initParentData(commandData)
 261         msoResourceIds =
 262                 if (resourceIdsRaw != null) JACKSON_OBJECT_MAPPER.convertValue(resourceIdsRaw)
 263                 else EMPTY_MSO_RESOURCE_ID
 264
 265         childJobs = JACKSON_OBJECT_MAPPER.convertValue(commandData.getOrDefault(CHILD_JOBS, emptyList<String>()))
 266         cumulativeStatus = getEnumFromMapOfStrings(commandData, CUMULATIVE_STATUS, JobStatus.COMPLETED_WITH_NO_ACTION)
 267         actionPhase = getEnumFromMapOfStrings(commandData, ACTION_PHASE, Action.Delete)
 268         internalState = calcInitialState(commandData, actionPhase)
 269         return this
 270     }
 271
 272     fun calcInitialState(commandData: Map<String, Any>, phase: Action):InternalState {
 273         val status:InternalState = getEnumFromMapOfStrings(commandData, INTERNAL_STATE, InternalState.INITIAL)
 274         if (status == InternalState.INITIAL) {
 275             onInitial(phase)
 276             return when (phase) {
 277                 Action.Delete -> when {
 278                     isDescendantHasAction(phase) -> InternalState.CREATING_CHILDREN
 279                     isNeedToDeleteMyself() -> InternalState.DELETE_MYSELF
 280                     else -> InternalState.TERMINAL
 281                 }
 282                 Action.Create -> when {
 283                     isNeedToCreateMyself() -> InternalState.CREATE_MYSELF
 284                     isNeedToResumeMySelf() -> InternalState.RESUME_MYSELF
 285                     isNeedToReplaceMySelf() -> InternalState.REPLACE_MYSELF
 286                     isDescendantHasAction(phase) -> InternalState.CREATING_CHILDREN
 287                     isDescendantHasAction(Action.Replace) -> InternalState.CREATING_CHILDREN
 288                     else -> InternalState.TERMINAL
 289                 }
 290                 else -> throw IllegalStateException("state $internalState is not supported yet")
 291             }
 292         }
 293         return status
 294     }
 295
 296     //command may override it in order to do something while init state
 297     protected open fun onInitial(phase: Action) {
 298         //do nothing
 299     }
 300
 301     //command may override it in order to do something while final status
 302     protected open fun onFinal(jobStatus: JobStatus) {
 303         //do nothing
 304     }
 305
 306     protected open fun getRequest(): BaseResource {
 307         return sharedData.request as BaseResource
 308     }
 309
 310     protected open fun getActionType(): Action {
 311         return getRequest().action
 312     }
 313
 314     protected open fun isServiceCommand(): Boolean = false
 315
 316     protected open fun isNeedToDeleteMyself(): Boolean = getActionType() == Action.Delete
 317
 318     protected open fun isNeedToCreateMyself(): Boolean = getActionType() == Action.Create
 319
 320     protected open fun isNeedToResumeMySelf(): Boolean = getActionType() == Action.Resume
 321
 322     protected open fun isNeedToReplaceMySelf(): Boolean = false
 323
 324     protected open fun inProgress(): JobStatus {
 325         val requestId:String = msoResourceIds.requestId;
 326         return try {
 327             val jobStatus = inProgressStatusService.call(getExpiryChecker(), sharedData, requestId)
 328             handleInProgressStatus(jobStatus)
 329         } catch (e: javax.ws.rs.ProcessingException) {
 330             // Retry when we can't connect MSO during getStatus
 331             Logger.error(EELFLoggerDelegate.errorLogger, "Cannot get orchestration status for {}, will retry: {}", requestId, e, e)
 332             JobStatus.IN_PROGRESS;
 333         } catch (e: InProgressStatusService.BadResponseFromMso) {
 334             inProgressStatusService.handleFailedMsoResponse(sharedData.jobUuid, requestId, e.msoResponse)
 335             JobStatus.IN_PROGRESS
 336         } catch (e: RuntimeException) {
 337             Logger.error(EELFLoggerDelegate.errorLogger, "Cannot get orchestration status for {}, stopping: {}", requestId, e, e)
 338             JobStatus.STOPPED
 339         }
 340     }
 341
 342     fun createMyself(): JobStatus {
 343         val createMyselfCommand = planCreateMyselfRestCall(commandParentData, sharedData.request, sharedData.userId, sharedData.testApi)
 344         return executeAndHandleMsoInstanceRequest(createMyselfCommand)
 345     }
 346
 347     protected open fun resumeMyself(): JobStatus {
 348         throw NotImplementedError("Resume is not implemented for this command " + this.javaClass)
 349     }
 350
 351     protected open fun replaceMyself(): JobStatus {
 352         throw NotImplementedError("Replace is not implemented for this command " + this.javaClass)
 353     }
 354
 355     fun deleteMyself(): JobStatus {
 356         val deleteMyselfCommand = planDeleteMyselfRestCall(commandParentData, sharedData.request, sharedData.userId)
 357         return executeAndHandleMsoInstanceRequest(deleteMyselfCommand)
 358     }
 359
 360     protected fun executeAndHandleMsoInstanceRequest(restCallPlan: MsoRestCallPlan): JobStatus {
 361         val msoResponse = restMso.restCall(
 362                 restCallPlan.httpMethod,
 363                 RequestReferencesContainer::class.java,
 364                 restCallPlan.payload.orElse(null),
 365                 restCallPlan.path,
 366                 restCallPlan.userId
 367         )
 368
 369         val msoResult = if (isServiceCommand()) {
 370             msoResultHandlerService.handleRootResponse(sharedData, msoResponse)
 371         } else {
 372             msoResultHandlerService.handleResponse(sharedData, msoResponse, restCallPlan.actionDescription)
 373         }
 374
 375         this.msoResourceIds = msoResult.msoResourceIds
 376         return msoResult.jobStatus
 377     }
 378
 379     protected open fun getExpiryChecker(): ExpiryChecker = ExpiryChecker {false}
 380
 381     protected open fun handleInProgressStatus(jobStatus: JobStatus): JobStatus {
 382         return if (jobStatus == JobStatus.PAUSE) JobStatus.IN_PROGRESS else jobStatus
 383     }
 384
 385     protected open fun watchChildren():JobStatus {
 386         return watchChildrenJobsBL.retrieveChildrenJobsStatus(childJobs)
 387     }
 388
 389     protected fun comulateStatusAndUpdatePropertyIfFinal(internalStateStatus: JobStatus): JobStatus {
 390         val status = watchChildrenJobsBL.cumulateJobStatus(internalStateStatus, cumulativeStatus)
 391
 392         //we want to update cumulativeStatus only for final status
 393         if (status.isFinal) {
 394             cumulativeStatus = status;
 395         }
 396
 397         return status
 398     }
 399
 400     protected fun buildDataForChild(request: BaseResource, actionPhase: Action): Map<String, Any> {
 401         addMyselfToChildrenData(commandParentData, request)
 402         commandParentData.setActionPhase(actionPhase)
 403         return commandParentData.parentData
 404     }
 405
 406     protected open fun addMyselfToChildrenData(commandParentData: CommandParentData, request: BaseResource) {
 407         // Nothing by default
 408     }
 409
 410     protected open fun isDescendantHasAction(phase:Action):Boolean = isDescendantHasAction(getRequest(), phase, true )
 411
 412
 413     @JvmOverloads
 414     fun isDescendantHasAction(request: BaseResource, phase: Action, isFirstLevel:Boolean=true): Boolean {
 415         if (!isFirstLevel && request.action == phase) {
 416             return true;
 417         }
 418
 419         return request.children.map {this.isDescendantHasAction(it, phase, false)}.any {it}
 420     }
 421
 422     protected fun getActualInstanceId(request: BaseResource):String =
 423             if (getActionType() == Action.Create) msoResourceIds.instanceId else request.instanceId
 424
 425
 426     protected fun pushChildrenJobsToBroker(children:Collection<BaseResource>,
 427                                            dataForChild: Map<String, Any>,
 428                                            jobType: JobType?=null): List<String> {
 429         var counter = 0;
 430         return  children
 431                 .map {Pair(it, counter++)}
 432                 .map { jobAdapter.createChildJob(jobType ?: it.first.jobType, it.first, sharedData, dataForChild, it.second) }
 433                 .map { jobsBrokerService.add(it) }
 434                 .map { it.toString() }
 435     }
 436
 437 }
 438
 439
 440