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

Class CounterSet.AddCounterMutator

java.lang.Object

com.google.cloud.dataflow.sdk.util.common.CounterSet.AddCounterMutator

Enclosing class:

CounterSet

public class CounterSet.AddCounterMutator
extends Object

A nested class that supports adding additional counters into the enclosing CounterSet. This is useful as a mutator; hiding other public methods of the CounterSet.

Constructor Summary

Constructors

Constructor and Description
AddCounterMutator()

Method Summary

Modifier and Type	Method and Description
<T> Counter<T>	addCounter(Counter<T> counter) Adds the given Counter into the enclosing CounterSet.

Methods inherited from class java.lang.Object

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

Constructor Detail

AddCounterMutator

public AddCounterMutator()

Method Detail

addCounter

public <T> Counter<T> addCounter(Counter<T> counter)

Adds the given Counter into the enclosing CounterSet.

If a counter with the same name already exists, it will be reused, as long as it has the same type.

Returns:

the Counter that was reused, or added

Throws:

IllegalArgumentException - if a counter with the same name but an incompatible kind had already been added