public RemoteTaskQueue(ILog logger,
ISerializer serializer,
IGlobalTime globalTime,
ICassandraCluster cassandraCluster,
IRtqSettings rtqSettings,
IRtqTaskDataRegistry taskDataRegistry,
IRtqProfiler rtqProfiler)
{
QueueKeyspace = rtqSettings.QueueKeyspace;
TaskTtl = rtqSettings.TaskTtl;
Logger = logger.ForContext("CassandraDistributedTaskQueue");
Serializer = serializer;
GlobalTime = globalTime;
TaskDataRegistry = taskDataRegistry;
enableContinuationOptimization = rtqSettings.EnableContinuationOptimization;
minTicksHolder = new RtqMinTicksHolder(cassandraCluster, rtqSettings);
TaskMinimalStartTicksIndex = new TaskMinimalStartTicksIndex(cassandraCluster, serializer, rtqSettings, new OldestLiveRecordTicksHolder(minTicksHolder), Logger);
var taskMetaStorage = new TaskMetaStorage(cassandraCluster, serializer, rtqSettings, Logger);
EventLogRepository = new EventLogRepository(serializer, cassandraCluster, rtqSettings, minTicksHolder);
childTaskIndex = new ChildTaskIndex(cassandraCluster, rtqSettings, serializer, taskMetaStorage);
HandleTasksMetaStorage = new HandleTasksMetaStorage(taskMetaStorage, TaskMinimalStartTicksIndex, EventLogRepository, GlobalTime, childTaskIndex, taskDataRegistry, Logger);
TaskDataStorage = new TaskDataStorage(cassandraCluster, rtqSettings, Logger);
TaskExceptionInfoStorage = new TaskExceptionInfoStorage(cassandraCluster, serializer, rtqSettings, Logger);
HandleTaskCollection = new HandleTaskCollection(HandleTasksMetaStorage, TaskDataStorage, TaskExceptionInfoStorage, rtqProfiler);
lazyRemoteLockCreator = new Lazy <IRemoteLockCreator>(() =>
{
var remoteLockImplementationSettings = CassandraRemoteLockImplementationSettings.Default(rtqSettings.QueueKeyspace, RtqColumnFamilyRegistry.LocksColumnFamilyName);
var remoteLockImplementation = new CassandraRemoteLockImplementation(cassandraCluster, serializer, remoteLockImplementationSettings);
var remoteLockerMetrics = new RemoteLockerMetrics($"{rtqSettings.QueueKeyspace}_{RtqColumnFamilyRegistry.LocksColumnFamilyName}");
return(new RemoteLocker(remoteLockImplementation, remoteLockerMetrics, Logger));
});
Profiler = rtqProfiler;
}
public RemoteLockerTester(RemoteLockerTesterConfig config = null)
{
config = config ?? RemoteLockerTesterConfig.Default();
var localRivalOptimizationIsEnabled = config.LocalRivalOptimization != LocalRivalOptimization.Disabled;
var serializer = new Serializer(new AllPropertiesExtractor(), null, GroBufOptions.MergeOnRead);
ICassandraCluster cassandraCluster = new CassandraCluster(config.CassandraClusterSettings, logger);
if (config.CassandraFailProbability.HasValue)
{
cassandraCluster = new FailedCassandraCluster(cassandraCluster, config.CassandraFailProbability.Value);
}
var timestampProvider = new StochasticTimestampProvider(config.TimestampProviderStochasticType, config.LockTtl);
var implementationSettings = new CassandraRemoteLockImplementationSettings(timestampProvider, SingleCassandraNodeSetUpFixture.RemoteLockKeyspace, SingleCassandraNodeSetUpFixture.RemoteLockColumnFamily, config.LockTtl, config.LockMetadataTtl, config.KeepLockAliveInterval, config.ChangeLockRowThreshold);
var cassandraRemoteLockImplementation = new CassandraRemoteLockImplementation(cassandraCluster, serializer, implementationSettings);
remoteLockers = new RemoteLocker[config.LockersCount];
remoteLockerMetrics = new RemoteLockerMetrics("dummyKeyspace");
if (localRivalOptimizationIsEnabled)
{
var remoteLocker = new RemoteLocker(cassandraRemoteLockImplementation, remoteLockerMetrics, logger);
for (var i = 0; i < config.LockersCount; i++)
{
remoteLockers[i] = remoteLocker;
}
}
else
{
for (var i = 0; i < config.LockersCount; i++)
{
remoteLockers[i] = new RemoteLocker(new CassandraRemoteLockImplementation(cassandraCluster, serializer, implementationSettings), remoteLockerMetrics, logger);
}
}
// it is important to use another CassandraCluster (with another setting of attempts, for example)
cassandraRemoteLockImplementationForCheckings = new CassandraRemoteLockImplementation(new CassandraCluster(SingleCassandraNodeSetUpFixture.CreateCassandraClusterSettings(), logger), serializer, implementationSettings);
}
private static IRemoteLockCreator[] PrepareRemoteLockCreators(int threadCount, LocalRivalOptimization localRivalOptimization, CassandraRemoteLockImplementation remoteLockImplementation)
{
var remoteLockCreators = new IRemoteLockCreator[threadCount];
var remoteLockerMetrics = new RemoteLockerMetrics(null);
if (localRivalOptimization == LocalRivalOptimization.Enabled)
{
var singleRemoteLocker = new RemoteLocker(remoteLockImplementation, remoteLockerMetrics, logger);
for (var i = 0; i < threadCount; i++)
{
remoteLockCreators[i] = singleRemoteLocker;
}
}
else
{
for (var i = 0; i < threadCount; i++)
{
remoteLockCreators[i] = new RemoteLocker(remoteLockImplementation, remoteLockerMetrics, logger);
}
}
return(remoteLockCreators);
}