private FeedEstimator BuildFeedEstimator()
{
if (this.remainingWorkEstimator == null)
{
Func <string, string, bool, FeedIterator> feedCreator = (string partitionKeyRangeId, string continuationToken, bool startFromBeginning) =>
{
return(ResultSetIteratorUtils.BuildResultSetIterator(
partitionKeyRangeId: partitionKeyRangeId,
continuationToken: continuationToken,
maxItemCount: 1,
cosmosContainer: this.monitoredContainer,
startTime: null,
startFromBeginning: string.IsNullOrEmpty(continuationToken)));
};
this.remainingWorkEstimator = new RemainingWorkEstimatorCore(
this.documentServiceLeaseStoreManager.LeaseContainer,
feedCreator,
this.monitoredContainer.ClientContext.Client.ClientOptions?.GatewayModeMaxConnectionLimit ?? 1);
}
ChangeFeedEstimatorDispatcher estimatorDispatcher = new ChangeFeedEstimatorDispatcher(this.initialEstimateDelegate, this.estimatorPeriod);
return(new FeedEstimatorCore(estimatorDispatcher, this.remainingWorkEstimator));
}
public ChangeFeedEstimatorIterator(
string processorName,
ContainerInternal monitoredContainer,
ContainerInternal leaseContainer,
ChangeFeedEstimatorRequestOptions changeFeedEstimatorRequestOptions)
: this(
processorName,
monitoredContainer,
leaseContainer,
changeFeedEstimatorRequestOptions,
(string partitionKeyRangeId, string continuationToken, bool startFromBeginning) =>
{
return(ResultSetIteratorUtils.BuildResultSetIterator(
partitionKeyRangeId : partitionKeyRangeId,
continuationToken : continuationToken,
maxItemCount : 1,
container : monitoredContainer,
startTime : null,
startFromBeginning : string.IsNullOrEmpty(continuationToken)));
})
{
}
public override FeedProcessor Create(DocumentServiceLease lease, ChangeFeedObserver <T> observer)
{
if (observer == null)
{
throw new ArgumentNullException(nameof(observer));
}
if (lease == null)
{
throw new ArgumentNullException(nameof(lease));
}
ProcessorSettings settings = new ProcessorSettings
{
StartContinuation = !string.IsNullOrEmpty(lease.ContinuationToken) ?
lease.ContinuationToken :
this.changeFeedProcessorOptions.StartContinuation,
LeaseToken = lease.CurrentLeaseToken,
FeedPollDelay = this.changeFeedProcessorOptions.FeedPollDelay,
MaxItemCount = this.changeFeedProcessorOptions.MaxItemCount,
StartFromBeginning = this.changeFeedProcessorOptions.StartFromBeginning,
StartTime = this.changeFeedProcessorOptions.StartTime,
SessionToken = this.changeFeedProcessorOptions.SessionToken,
};
string partitionKeyRangeId = lease.CurrentLeaseToken;
PartitionCheckpointerCore checkpointer = new PartitionCheckpointerCore(this.leaseCheckpointer, lease);
ChangeFeedPartitionKeyResultSetIteratorCore iterator = ResultSetIteratorUtils.BuildResultSetIterator(
partitionKeyRangeId: partitionKeyRangeId,
continuationToken: settings.StartContinuation,
maxItemCount: settings.MaxItemCount,
cosmosContainer: this.container,
startTime: settings.StartTime,
startFromBeginning: settings.StartFromBeginning);
return(new FeedProcessorCore <T>(observer, iterator, settings, checkpointer, this.cosmosJsonSerializer));
}
