com.google.cloud.dataflow.sdk.util.common.worker

Interface ProgressTracker<T>

Type Parameters:

T - the type of elements being tracked

public interface ProgressTracker<T>

Provides an interface to an object capable of tracking progress through a collection of elements to be processed.

Method Summary

Modifier and Type	Method and Description
ProgressTracker<T>	copy() Copies this ProgressTracker.
void	saw(T element) Reports an element to this ProgressTracker, as the element is about to be processed.

Method Detail

copy

ProgressTracker<T> copy()

Copies this ProgressTracker. The copied tracker will maintain its own independent notion of the caller's progress through the collection of elements being processed.

saw

void saw(T element)

Reports an element to this ProgressTracker, as the element is about to be processed.