io.confluent.telemetry

Class PredicateUtils

java.lang.Object

io.confluent.telemetry.PredicateUtils

public class PredicateUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static Predicate<Keyed>	ALWAYS_FALSE
static Predicate<Keyed>	ALWAYS_TRUE
static long	MATCHER_CACHE_MAX_SIZE Maximum size of the pattern matcher cache.

Constructor Summary

Constructors

Constructor and Description
PredicateUtils()

Method Summary

Modifier and Type	Method and Description
static Predicate<Keyed>	buildCachingMetricsPredicate(String regexString)

Methods inherited from class java.lang.Object

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

Field Detail

ALWAYS_TRUE

public static final Predicate<Keyed> ALWAYS_TRUE

ALWAYS_FALSE

public static final Predicate<Keyed> ALWAYS_FALSE

MATCHER_CACHE_MAX_SIZE

public static final long MATCHER_CACHE_MAX_SIZE

Maximum size of the pattern matcher cache. If the count of unique metric names in a single collection cycle exceeds this size, the cache will actually cause a performance penalty due to thrashing. Currently, there are almost 3000 unique metric names in Kafka.

See Also:

Constant Field Values

Constructor Detail

PredicateUtils

public PredicateUtils()

Method Detail

buildCachingMetricsPredicate

public static Predicate<Keyed> buildCachingMetricsPredicate(String regexString)