public Stream(INodeContext sourceNode, IPushObservable <T> observable)
{
this.SourceNode = sourceNode;
var rowTracer = new RowTracer();
var executionContext = this.SourceNode.ExecutionContext;
this.Observable = observable.Filter(i => !executionContext.Terminating);
if (!this.SourceNode.ExecutionContext.IsTracingContext)
{
if (executionContext.UseDetailedTraces)
{
PushObservable.Merge <ITraceContent>(
this.Observable.Map(rowTracer.ProcessRow),
this.Observable.Count().Map(count => new CounterSummaryStreamTraceContent(count)),
this.Observable.ExceptionsToObservable().Map(e => new UnhandledExceptionStreamTraceContent(e))
).Do(i => this.SourceNode.ExecutionContext.AddTrace(i, sourceNode));
}
else
{
PushObservable.Merge <ITraceContent>(
this.Observable.Count().Map(count => new CounterSummaryStreamTraceContent(count)),
this.Observable.ExceptionsToObservable().Map(e => new UnhandledExceptionStreamTraceContent(e))
).Do(i => this.SourceNode.ExecutionContext.AddTrace(i, sourceNode));
}
}
}
public Stream(ITraceMapper traceMapper, IExecutionContext executionContext, string sourceNodeName, IPushObservable <T> observable)
{
this.TraceMapper = traceMapper;
this.SourceNodeName = sourceNodeName;
this.ExecutionContext = executionContext;
this.Observable = observable.TakeUntil(executionContext.StopProcessEvent);
if (traceMapper != null)
{
this.TraceObservable =
PushObservable.Merge <ITraceContent>(
this.Observable.ExceptionsToObservable().Map(e => new UnhandledExceptionStreamTraceContent(e)),
this.Observable.Count().Map(count => new CounterSummaryStreamTraceContent(count)),
this.Observable.Map((e, i) => new RowProcessStreamTraceContent(i + 1, e))
).Map(i => traceMapper.MapToTrace(i, executionContext.NextTraceSequence()));
}
}
public Stream(ITracer tracer, IExecutionContext executionContext, string sourceNodeName, IPushObservable <T> observable)
{
this.Tracer = tracer;
this.SourceNodeName = sourceNodeName;
this.ExecutionContext = executionContext;
this.Observable = observable
.CompletesOnException(e => tracer.Trace(new UnhandledExceptionStreamTraceContent(e)))
.TakeUntil(executionContext.StopProcessEvents);
if (tracer != null)
{
PushObservable.Merge <ITraceContent>(
this.Observable.Count().Map(count => new CounterSummaryStreamTraceContent(count)),
this.Observable.Map((e, i) => new RowProcessStreamTraceContent(i + 1, e))
).Subscribe(tracer.Trace);
}
}