2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2022-2024 Nordix Foundation
4 * Modifications Copyright (C) 2022 Bell Canada
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * SPDX-License-Identifier: Apache-2.0
19 * ============LICENSE_END=========================================================
22 package org.onap.cps.ncmp.impl.inventory.sync
24 import com.hazelcast.map.IMap
25 import org.onap.cps.ncmp.impl.inventory.models.YangModelCmHandle
26 import org.onap.cps.ncmp.impl.utils.Sleeper
27 import org.onap.cps.api.model.DataNode
28 import spock.lang.Specification
30 import java.util.concurrent.ArrayBlockingQueue
31 import java.util.concurrent.locks.Lock
33 class ModuleSyncWatchdogSpec extends Specification {
35 def mockModuleOperationsUtils = Mock(ModuleOperationsUtils)
37 def static testQueueCapacity = 50 + 2 * ModuleSyncWatchdog.MODULE_SYNC_BATCH_SIZE
39 def moduleSyncWorkQueue = new ArrayBlockingQueue(testQueueCapacity)
41 def mockModuleSyncStartedOnCmHandles = Mock(IMap<String, Object>)
43 def mockModuleSyncTasks = Mock(ModuleSyncTasks)
45 def spiedAsyncTaskExecutor = Spy(AsyncTaskExecutor)
47 def mockCpsAndNcmpLock = Mock(IMap<String,String>)
49 def spiedSleeper = Spy(Sleeper)
51 def objectUnderTest = new ModuleSyncWatchdog(mockModuleOperationsUtils, moduleSyncWorkQueue , mockModuleSyncStartedOnCmHandles, mockModuleSyncTasks, spiedAsyncTaskExecutor, mockCpsAndNcmpLock, spiedSleeper)
54 spiedAsyncTaskExecutor.setupThreadPool()
57 def 'Module sync advised cm handles with #scenario.'() {
58 given: 'module sync utilities returns #numberOfAdvisedCmHandles advised cm handles'
59 mockModuleOperationsUtils.getAdvisedCmHandleIds() >> createCmHandleIds(numberOfAdvisedCmHandles)
60 and: 'module sync utilities returns no failed (locked) cm handles'
61 mockModuleOperationsUtils.getCmHandlesThatFailedModelSyncOrUpgrade() >> []
62 and: 'the work queue can be locked'
63 mockCpsAndNcmpLock.tryLock('workQueueLock') >> true
64 and: 'the executor has enough available threads'
65 spiedAsyncTaskExecutor.getAsyncTaskParallelismLevel() >> 3
66 when: ' module sync is started'
67 objectUnderTest.moduleSyncAdvisedCmHandles()
68 then: 'it performs #expectedNumberOfTaskExecutions tasks'
69 expectedNumberOfTaskExecutions * spiedAsyncTaskExecutor.executeTask(*_)
70 and: 'the executing thread is unlocked'
71 1 * mockCpsAndNcmpLock.unlock('workQueueLock')
72 where: 'the following parameter are used'
73 scenario | numberOfAdvisedCmHandles || expectedNumberOfTaskExecutions
74 'none at all' | 0 || 0
75 'less then 1 batch' | 1 || 1
76 'exactly 1 batch' | ModuleSyncWatchdog.MODULE_SYNC_BATCH_SIZE || 1
77 '2 batches' | 2 * ModuleSyncWatchdog.MODULE_SYNC_BATCH_SIZE || 2
78 'queue capacity' | testQueueCapacity || 3
79 'over queue capacity' | testQueueCapacity + 2 * ModuleSyncWatchdog.MODULE_SYNC_BATCH_SIZE || 3
82 def 'Module sync cm handles starts with no available threads.'() {
83 given: 'module sync utilities returns a advise cm handles'
84 mockModuleOperationsUtils.getAdvisedCmHandleIds() >> createCmHandleIds(1)
85 and: 'the work queue can be locked'
86 mockCpsAndNcmpLock.tryLock('workQueueLock') >> true
87 and: 'the executor first has no threads but has one thread on the second attempt'
88 spiedAsyncTaskExecutor.getAsyncTaskParallelismLevel() >>> [ 0, 1 ]
89 when: ' module sync is started'
90 objectUnderTest.moduleSyncAdvisedCmHandles()
91 then: 'it performs one task'
92 1 * spiedAsyncTaskExecutor.executeTask(*_)
95 def 'Module sync advised cm handle already handled by other thread.'() {
96 given: 'module sync utilities returns an advised cm handle'
97 mockModuleOperationsUtils.getAdvisedCmHandleIds() >> createCmHandleIds(1)
98 and: 'the work queue can be locked'
99 mockCpsAndNcmpLock.tryLock('workQueueLock') >> true
100 and: 'the executor has a thread available'
101 spiedAsyncTaskExecutor.getAsyncTaskParallelismLevel() >> 1
102 and: 'the semaphore cache indicates the cm handle is already being processed'
103 mockModuleSyncStartedOnCmHandles.putIfAbsent(*_) >> 'Started'
104 when: ' module sync is started'
105 objectUnderTest.moduleSyncAdvisedCmHandles()
106 then: 'it does NOT execute a task to process the (empty) batch'
107 0 * spiedAsyncTaskExecutor.executeTask(*_)
110 def 'Module sync with previous cm handle(s) left in work queue.'() {
111 given: 'there is still a cm handle in the queue'
112 moduleSyncWorkQueue.offer('ch-1')
113 and: 'sync utilities returns many advise cm handles'
114 mockModuleOperationsUtils.getAdvisedCmHandleIds() >> createCmHandleIds(500)
115 and: 'the executor has plenty threads available'
116 spiedAsyncTaskExecutor.getAsyncTaskParallelismLevel() >> 10
117 when: ' module sync is started'
118 objectUnderTest.moduleSyncAdvisedCmHandles()
119 then: 'it does executes only one task to process the remaining handle in the queue'
120 1 * spiedAsyncTaskExecutor.executeTask(*_)
123 def 'Reset failed cm handles.'() {
124 given: 'module sync utilities returns failed cm handles'
125 def failedCmHandles = [new YangModelCmHandle()]
126 mockModuleOperationsUtils.getCmHandlesThatFailedModelSyncOrUpgrade() >> failedCmHandles
127 when: 'reset failed cm handles is started'
128 objectUnderTest.setPreviouslyLockedCmHandlesToAdvised()
129 then: 'it is delegated to the module sync task (service)'
130 1 * mockModuleSyncTasks.setCmHandlesToAdvised(failedCmHandles)
133 def 'Module Sync Locking.'() {
134 given: 'module sync utilities returns an advised cm handle'
135 mockModuleOperationsUtils.getAdvisedCmHandleIds() >> createCmHandleIds(1)
136 and: 'can be locked is : #canLock'
137 mockCpsAndNcmpLock.tryLock('workQueueLock') >> canLock
138 when: 'attempt to populate the work queue'
139 objectUnderTest.populateWorkQueueIfNeeded()
140 then: 'the queue remains empty is #expectQueueRemainsEmpty'
141 assert moduleSyncWorkQueue.isEmpty() == expectQueueRemainsEmpty
142 and: 'unlock is called only when thread is able to enter the critical section'
143 expectedInvocationToUnlock * mockCpsAndNcmpLock.unlock('workQueueLock')
144 where: 'the following lock states are applied'
145 canLock || expectQueueRemainsEmpty || expectedInvocationToUnlock
150 def 'Sleeper gets interrupted.'() {
151 given: 'sleeper gets interrupted'
152 spiedSleeper.haveALittleRest(_) >> { throw new InterruptedException() }
153 when: 'the watchdog attempts to sleep to save cpu cycles'
154 objectUnderTest.preventBusyWait()
155 then: 'no exception is thrown'
159 def createCmHandleIds(numberOfCmHandles) {
160 return (numberOfCmHandles > 0) ? (1..numberOfCmHandles).collect { 'ch-'+it } : []