org.apache.storm.testing

Class TrackedTopology

java.lang.Object

org.apache.storm.testing.TrackedTopology

public class TrackedTopology
extends Object

A tracked topology keeps metrics for every bolt and spout. This allows a test to know how many tuples have been fully processed. Metrics are tracked on a per cluster basis. So only one tracked topology should be run in a tracked cluster to avoid conflicts.

Constructor Summary

Constructors

Constructor and Description
TrackedTopology(StormTopology origTopo, ILocalCluster cluster) Create a new topology to be tracked.

Method Summary

Modifier and Type	Method and Description
ILocalCluster	getCluster()
StormTopology	getTopology()
int	globalAmt(String key) Read a metric from the tracked cluster (NOT JUST THIS TOPOLOGY).
void	trackedWait() Wait for 1 tuple to be fully processed.
void	trackedWait(int amt) Wait for amt tuples to be fully processed.
void	trackedWait(int amt, int timeoutMs) Wait for amt tuples to be fully processed timeoutMs happens.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TrackedTopology

public TrackedTopology(StormTopology origTopo,
                       ILocalCluster cluster)

Create a new topology to be tracked.

Parameters:

origTopo - the original topology.

cluster - a cluster that should have been launched with tracking enabled.

Method Detail

getTopology

public StormTopology getTopology()

getCluster

public ILocalCluster getCluster()

trackedWait

public void trackedWait()

Wait for 1 tuple to be fully processed.

trackedWait

public void trackedWait(int amt)

Wait for amt tuples to be fully processed.

trackedWait

public void trackedWait(int amt,
                        int timeoutMs)

Wait for amt tuples to be fully processed timeoutMs happens.

globalAmt

public int globalAmt(String key)

Read a metric from the tracked cluster (NOT JUST THIS TOPOLOGY).

Parameters:

key - one of “spout-emitted”, “processed”, or “transferred”

Returns:

the amount of that metric