public StreamConsumer([NotNull] StreamConsumerSettings <T> settings, [CanBeNull] ILog log)
{
this.settings = settings ?? throw new ArgumentNullException(nameof(settings));
this.log = (log ?? LogProvider.Get()).ForContext <StreamConsumer <T> >();
streamReader = new StreamReader <T>(
new StreamReaderSettings <T>(
settings.StreamName,
settings.StreamClient)
{
EventsReadTimeout = settings.EventsReadTimeout,
EventsReadBatchSize = settings.EventsReadBatchSize,
EventsReadAttempts = settings.EventsReadAttempts,
DelayOnError = settings.DelayOnError
},
log);
eventsMetric = settings.MetricContext?.CreateIntegerGauge("events", "type", new IntegerGaugeConfig {
ResetOnScrape = true
});
iterationMetric = settings.MetricContext?.CreateSummary("iteration", "type", new SummaryConfig {
Quantiles = new[] { 0.5, 0.75, 1 }
});
settings.MetricContext?.CreateFuncGauge("events", "type").For("remaining").SetValueProvider(() => CountStreamRemainingEvents());
}
public Task RunAsync(CancellationToken cancellationToken)
{
var consumerSettings = new StreamConsumerSettings(
settings.SourceStreamName,
settings.StreamClient,
new TransformingEventHandler(settings, log),
settings.CoordinatesStorage,
settings.ShardingSettingsProvider)
{
MetricContext = settings.MetricContext,
EventsReadBatchSize = settings.EventsReadBatchSize,
EventsReadTimeout = settings.EventsReadTimeout,
EventsReadAttempts = settings.EventsReadAttempts,
DelayOnError = settings.DelayOnError,
DelayOnNoEvents = settings.DelayOnNoEvents
};
return(new StreamConsumer(consumerSettings, log).RunAsync(cancellationToken));
}
public StreamConsumer([NotNull] StreamConsumerSettings settings, [CanBeNull] ILog log) =>
