/// <summary>
/// EventHub queue cache.
/// </summary>
/// <param name="partition">Partition this instance is caching.</param>
/// <param name="defaultMaxAddCount">Default max number of items that can be added to the cache between purge calls.</param>
/// <param name="bufferPool">raw data block pool.</param>
/// <param name="dataAdapter">Adapts EventData to cached.</param>
/// <param name="evictionStrategy">Eviction strategy manage purge related events</param>
/// <param name="checkpointer">Logic used to store queue position.</param>
/// <param name="logger"></param>
/// <param name="cacheMonitor"></param>
/// <param name="cacheMonitorWriteInterval"></param>
/// <param name="metadataMinTimeInCache"></param>
public EventHubQueueCache(
string partition,
int defaultMaxAddCount,
IObjectPool <FixedSizeBuffer> bufferPool,
IEventHubDataAdapter dataAdapter,
IEvictionStrategy evictionStrategy,
IStreamQueueCheckpointer <string> checkpointer,
ILogger logger,
ICacheMonitor cacheMonitor,
TimeSpan?cacheMonitorWriteInterval,
TimeSpan?metadataMinTimeInCache)
{
this.Partition = partition;
this.defaultMaxAddCount = defaultMaxAddCount;
this.bufferPool = bufferPool;
this.dataAdapter = dataAdapter;
this.checkpointer = checkpointer;
this.cache = new PooledQueueCache(dataAdapter, logger, cacheMonitor, cacheMonitorWriteInterval, metadataMinTimeInCache);
this.cacheMonitor = cacheMonitor;
this.evictionStrategy = evictionStrategy;
this.evictionStrategy.OnPurged = this.OnPurge;
this.evictionStrategy.PurgeObservable = this.cache;
this.cachePressureMonitor = new AggregatedCachePressureMonitor(logger, cacheMonitor);
this.logger = logger;
}
/// <summary>
/// Construct EventHub queue cache.
/// </summary>
/// <param name="defaultMaxAddCount">Default max number of items that can be added to the cache between purge calls.</param>
/// <param name="checkpointer">Logic used to store queue position.</param>
/// <param name="cacheDataAdapter">Performs data transforms appropriate for the various types of queue data.</param>
/// <param name="comparer">Compares cached data</param>
/// <param name="logger"></param>
protected EventHubQueueCache(int defaultMaxAddCount, IStreamQueueCheckpointer <string> checkpointer, ICacheDataAdapter <EventData, TCachedMessage> cacheDataAdapter, ICacheDataComparer <TCachedMessage> comparer, Logger logger)
{
this.defaultMaxAddCount = defaultMaxAddCount;
Checkpointer = checkpointer;
cache = new PooledQueueCache <EventData, TCachedMessage>(cacheDataAdapter, comparer, logger);
cacheDataAdapter.PurgeAction = cache.Purge;
cache.OnPurged = OnPurge;
this.cachePressureMonitor = new AggregatedCachePressureMonitor(logger);
}
/// <summary>
/// Construct EventHub queue cache.
/// </summary>
/// <param name="defaultMaxAddCount">Default max number of items that can be added to the cache between purge calls.</param>
/// <param name="checkpointer">Logic used to store queue position.</param>
/// <param name="cacheDataAdapter">Performs data transforms appropriate for the various types of queue data.</param>
/// <param name="comparer">Compares cached data</param>
/// <param name="logger"></param>
/// <param name="evictionStrategy">Eviction stretagy manage purge related events</param>
protected EventHubQueueCache(int defaultMaxAddCount, IStreamQueueCheckpointer <string> checkpointer, ICacheDataAdapter <EventData, TCachedMessage> cacheDataAdapter,
ICacheDataComparer <TCachedMessage> comparer, Logger logger, IEvictionStrategy <TCachedMessage> evictionStrategy)
{
this.defaultMaxAddCount = defaultMaxAddCount;
Checkpointer = checkpointer;
cache = new PooledQueueCache <EventData, TCachedMessage>(cacheDataAdapter, comparer, logger);
this.evictionStrategy = evictionStrategy;
this.evictionStrategy.OnPurged = this.OnPurge;
this.evictionStrategy.PurgeObservable = cache;
cacheDataAdapter.OnBlockAllocated = this.evictionStrategy.OnBlockAllocated;
this.cachePressureMonitor = new AggregatedCachePressureMonitor(logger);
}
/// <summary>
/// Construct EventHub queue cache.
/// </summary>
/// <param name="defaultMaxAddCount">Default max number of items that can be added to the cache between purge calls.</param>
/// <param name="checkpointer">Logic used to store queue position.</param>
/// <param name="cacheDataAdapter">Performs data transforms appropriate for the various types of queue data.</param>
/// <param name="comparer">Compares cached data</param>
/// <param name="logger"></param>
/// <param name="evictionStrategy">Eviction stretagy manage purge related events</param>
/// <param name="cacheMonitor"></param>
/// <param name="cacheMonitorWriteInterval"></param>
protected EventHubQueueCache(int defaultMaxAddCount, IStreamQueueCheckpointer <string> checkpointer, ICacheDataAdapter <EventData, TCachedMessage> cacheDataAdapter,
ICacheDataComparer <TCachedMessage> comparer, Logger logger, IEvictionStrategy <TCachedMessage> evictionStrategy,
ICacheMonitor cacheMonitor, TimeSpan?cacheMonitorWriteInterval)
{
this.defaultMaxAddCount = defaultMaxAddCount;
Checkpointer = checkpointer;
cache = new PooledQueueCache <EventData, TCachedMessage>(cacheDataAdapter, comparer, logger, cacheMonitor, cacheMonitorWriteInterval);
this.cacheMonitor = cacheMonitor;
this.evictionStrategy = evictionStrategy;
this.evictionStrategy.OnPurged = this.OnPurge;
this.cachePressureMonitor = new AggregatedCachePressureMonitor(logger, cacheMonitor);
EvictionStrategyCommonUtils.WireUpEvictionStrategy <EventData, TCachedMessage>(this.cache, cacheDataAdapter, this.evictionStrategy);
}
