gerrit.onap Code Review - ccsdk/cds.git/blob

   1 /*
   2  * Copyright © 2018-2019 AT&T Intellectual Property.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.ccsdk.cds.blueprintsprocessor.core.cluster
  18
  19 import com.hazelcast.client.HazelcastClient
  20 import com.hazelcast.client.config.ClientConfig
  21 import com.hazelcast.client.config.YamlClientConfigBuilder
  22 import com.hazelcast.cluster.Member
  23 import com.hazelcast.cluster.MembershipEvent
  24 import com.hazelcast.cluster.MembershipListener
  25 import com.hazelcast.config.Config
  26 import com.hazelcast.config.FileSystemYamlConfig
  27 import com.hazelcast.config.MemberAttributeConfig
  28 import com.hazelcast.core.Hazelcast
  29 import com.hazelcast.core.HazelcastInstance
  30 import com.hazelcast.cp.CPSubsystemManagementService
  31 import com.hazelcast.cp.lock.FencedLock
  32 import com.hazelcast.scheduledexecutor.IScheduledExecutorService
  33 import kotlinx.coroutines.delay
  34 import org.onap.ccsdk.cds.blueprintsprocessor.core.service.BluePrintClusterService
  35 import org.onap.ccsdk.cds.blueprintsprocessor.core.service.ClusterInfo
  36 import org.onap.ccsdk.cds.blueprintsprocessor.core.service.ClusterLock
  37 import org.onap.ccsdk.cds.blueprintsprocessor.core.service.ClusterMember
  38 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintConstants
  39 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
  40 import org.onap.ccsdk.cds.controllerblueprints.core.logger
  41 import org.onap.ccsdk.cds.controllerblueprints.core.normalizedFile
  42 import org.onap.ccsdk.cds.controllerblueprints.core.utils.ClusterUtils
  43 import org.springframework.stereotype.Service
  44 import java.time.Duration
  45 import java.util.concurrent.TimeUnit
  46
  47 @Service
  48 open class HazlecastClusterService : BluePrintClusterService {
  49
  50     private val log = logger(HazlecastClusterService::class)
  51     lateinit var hazelcast: HazelcastInstance
  52     lateinit var cpSubsystemManagementService: CPSubsystemManagementService
  53     var joinedClient = false
  54     var joinedLite = false
  55
  56     override suspend fun <T> startCluster(configuration: T) {
  57         /** Get the Hazelcast Client or Server instance */
  58         hazelcast =
  59             when (configuration) {
  60                 is Config -> {
  61                     joinedLite = configuration.isLiteMember
  62                     val hazelcastInstance = Hazelcast.newHazelcastInstance(configuration)
  63                     /** Promote as CP Member */
  64                     promoteAsCPMember(hazelcastInstance)
  65                     hazelcastInstance
  66                 }
  67                 is ClientConfig -> {
  68                     joinedClient = true
  69                     HazelcastClient.newHazelcastClient(configuration)
  70                 }
  71                 is ClusterInfo -> {
  72
  73                     System.setProperty(BluePrintConstants.PROPERTY_CLUSTER_ID, configuration.id)
  74                     System.setProperty(BluePrintConstants.PROPERTY_CLUSTER_NODE_ID, configuration.nodeId)
  75
  76                     val memberAttributeConfig = MemberAttributeConfig()
  77                     memberAttributeConfig.setAttribute(
  78                         BluePrintConstants.PROPERTY_CLUSTER_NODE_ID,
  79                         configuration.nodeId
  80                     )
  81
  82                     val configFile = configuration.configFile
  83                     /** Check file exists */
  84                     val clusterConfigFile = normalizedFile(configuration.configFile)
  85                     check(clusterConfigFile.absolutePath.endsWith("yaml", true)) {
  86                         "couldn't understand cluster config file(${configuration.configFile}) format, it should be yaml"
  87                     }
  88                     check(clusterConfigFile.exists()) {
  89                         "couldn't file cluster configuration file(${clusterConfigFile.absolutePath})"
  90                     }
  91                     log.info("****** Cluster configuration file(${clusterConfigFile.absolutePath}) ****")
  92
  93                     /** Hazelcast Client from config file */
  94                     if (configuration.joinAsClient) {
  95                         /** Set the configuration file to system properties, so that Hazelcast will read automatically */
  96                         System.setProperty("hazelcast.client.config", clusterConfigFile.absolutePath)
  97                         joinedClient = true
  98                         val hazelcastClientConfiguration = YamlClientConfigBuilder().build()
  99                         hazelcastClientConfiguration.properties = configuration.properties
 100                         HazelcastClient.newHazelcastClient(hazelcastClientConfiguration)
 101                     } else {
 102                         /** Hazelcast Server from config file */
 103                         val hazelcastServerConfiguration = FileSystemYamlConfig(normalizedFile(configFile))
 104                         hazelcastServerConfiguration.clusterName = configuration.id
 105                         hazelcastServerConfiguration.instanceName = configuration.nodeId
 106                         hazelcastServerConfiguration.properties = configuration.properties
 107                         hazelcastServerConfiguration.memberAttributeConfig = memberAttributeConfig
 108                         joinedLite = hazelcastServerConfiguration.isLiteMember
 109                         val hazelcastInstance = Hazelcast.newHazelcastInstance(hazelcastServerConfiguration)
 110                         /** Promote as CP Member */
 111                         promoteAsCPMember(hazelcastInstance)
 112                         hazelcastInstance
 113                     }
 114                 }
 115                 else -> {
 116                     throw BluePrintProcessorException("couldn't understand the cluster configuration")
 117                 }
 118             }
 119
 120         /** Add the Membership Listeners */
 121         hazelcast.cluster.addMembershipListener(BlueprintsClusterMembershipListener())
 122         log.info(
 123             "Cluster(${hazelcast.config.clusterName}) node(${hazelcast.name}) created successfully...."
 124         )
 125     }
 126
 127     override fun isClient(): Boolean {
 128         return joinedClient
 129     }
 130
 131     override fun isLiteMember(): Boolean {
 132         return joinedLite
 133     }
 134
 135     override fun clusterJoined(): Boolean {
 136         return hazelcast.lifecycleService.isRunning
 137     }
 138
 139     override suspend fun masterMember(partitionGroup: String): ClusterMember {
 140         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 141         return hazelcast.cluster.members.first().toClusterMember()
 142     }
 143
 144     override suspend fun allMembers(): Set<ClusterMember> {
 145         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 146         return hazelcast.cluster.members.map { it.toClusterMember() }.toSet()
 147     }
 148
 149     override suspend fun applicationMembers(appName: String): Set<ClusterMember> {
 150         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 151         return hazelcastApplicationMembers(appName).mapNotNull { it.value.toClusterMember() }.toSet()
 152     }
 153
 154     override suspend fun <T> clusterMapStore(name: String): MutableMap<String, T> {
 155         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 156         return hazelcast.getMap<String, T>(name)
 157     }
 158
 159     /**
 160      * The DistributedLock is a distributed implementation of Java’s Lock.
 161      * This API provides monotonically increasing, globally unique lock instance identifiers that can be used to
 162      * determine ordering of multiple concurrent lock holders.
 163      * DistributedLocks are designed to account for failures within the cluster.
 164      * When a lock holder crashes or becomes disconnected from the partition by which the lock’s state is controlled,
 165      * the lock will be released and granted to the next waiting process.
 166      */
 167     override suspend fun clusterLock(name: String): ClusterLock {
 168         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 169         return ClusterLockImpl(hazelcast, name)
 170     }
 171
 172     /** Return interface may change and it will be included in BluePrintClusterService */
 173     @UseExperimental
 174     suspend fun clusterScheduler(name: String): IScheduledExecutorService {
 175         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 176         return hazelcast.getScheduledExecutorService(name)
 177     }
 178
 179     override suspend fun shutDown(duration: Duration) {
 180         if (::hazelcast.isInitialized && clusterJoined()) {
 181             delay(duration.toMillis())
 182             HazlecastClusterUtils.terminate(hazelcast)
 183         }
 184     }
 185
 186     /** Utils */
 187     suspend fun promoteAsCPMember(hazelcastInstance: HazelcastInstance) {
 188         if (!joinedClient && !joinedLite) {
 189             HazlecastClusterUtils.promoteAsCPMember(hazelcastInstance)
 190         }
 191     }
 192
 193     suspend fun myHazelcastApplicationMembers(): Map<String, Member> {
 194         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 195         check(!isClient()) { "not supported for cluster client members." }
 196         return hazelcastApplicationMembers(ClusterUtils.applicationName())
 197     }
 198
 199     suspend fun hazelcastApplicationMembers(appName: String): Map<String, Member> {
 200         check(::hazelcast.isInitialized) { "failed to start and join cluster" }
 201         val applicationMembers: MutableMap<String, Member> = hashMapOf()
 202         hazelcast.cluster.members.map { member ->
 203             val memberName: String = member.getAttribute(BluePrintConstants.PROPERTY_CLUSTER_NODE_ID)
 204             if (memberName.startsWith(appName, true)) {
 205                 applicationMembers[memberName] = member
 206             }
 207         }
 208         return applicationMembers
 209     }
 210 }
 211
 212 open class BlueprintsClusterMembershipListener() :
 213     MembershipListener {
 214     private val log = logger(BlueprintsClusterMembershipListener::class)
 215
 216     override fun memberRemoved(membershipEvent: MembershipEvent) {
 217         log.info("MembershipEvent: $membershipEvent")
 218     }
 219
 220     override fun memberAdded(membershipEvent: MembershipEvent) {
 221         log.info("MembershipEvent: $membershipEvent")
 222     }
 223 }
 224
 225 open class ClusterLockImpl(private val hazelcast: HazelcastInstance, private val name: String) : ClusterLock {
 226     private val log = logger(ClusterLockImpl::class)
 227
 228     lateinit var distributedLock: FencedLock
 229
 230     override fun name(): String {
 231         return distributedLock.name
 232     }
 233
 234     override suspend fun lock() {
 235         distributedLock = hazelcast.cpSubsystem.getLock(name)
 236         distributedLock.lock()
 237         log.trace("Cluster lock($name) created..")
 238     }
 239
 240     override suspend fun tryLock(timeout: Long): Boolean {
 241         distributedLock = hazelcast.cpSubsystem.getLock(name)
 242         return distributedLock.tryLock(timeout, TimeUnit.MILLISECONDS)
 243     }
 244
 245     override suspend fun unLock() {
 246         distributedLock.unlock()
 247         log.trace("Cluster unlock(${name()}) successfully..")
 248     }
 249
 250     override fun isLocked(): Boolean {
 251         return distributedLock.isLocked
 252     }
 253
 254     override suspend fun fenceLock(): String {
 255         distributedLock = hazelcast.cpSubsystem.getLock(name)
 256         val fence = distributedLock.lockAndGetFence()
 257         log.trace("Cluster lock($name) fence($fence) created..")
 258         return fence.toString()
 259     }
 260
 261     override suspend fun tryFenceLock(timeout: Long): String {
 262         distributedLock = hazelcast.cpSubsystem.getLock(name)
 263         return distributedLock.tryLockAndGetFence(timeout, TimeUnit.MILLISECONDS).toString()
 264     }
 265
 266     override fun close() {
 267     }
 268 }