com.netflix.hystrix.contrib.codahalemetricspublisher

Class HystrixCodaHaleMetricsPublisherCommand

java.lang.Object

com.netflix.hystrix.contrib.codahalemetricspublisher.HystrixCodaHaleMetricsPublisherCommand

All Implemented Interfaces:

com.netflix.hystrix.strategy.metrics.HystrixMetricsPublisherCommand

public class HystrixCodaHaleMetricsPublisherCommand
extends java.lang.Object
implements com.netflix.hystrix.strategy.metrics.HystrixMetricsPublisherCommand

Implementation of HystrixMetricsPublisherCommand using Coda Hale Metrics (https://github.com/codahale/metrics)

Constructor Summary

Constructors

Constructor and Description
HystrixCodaHaleMetricsPublisherCommand(com.netflix.hystrix.HystrixCommandKey commandKey, com.netflix.hystrix.HystrixCommandGroupKey commandGroupKey, com.netflix.hystrix.HystrixCommandMetrics metrics, com.netflix.hystrix.HystrixCircuitBreaker circuitBreaker, com.netflix.hystrix.HystrixCommandProperties properties, com.codahale.metrics.MetricRegistry metricRegistry)

Method Summary

Modifier and Type	Method and Description
protected void	createCumulativeCountForEvent(java.lang.String name, com.netflix.hystrix.util.HystrixRollingNumberEvent event)
protected java.lang.String	createMetricName(java.lang.String name)
protected void	createRollingCountForEvent(java.lang.String name, com.netflix.hystrix.util.HystrixRollingNumberEvent event)
void	initialize() An implementation note.
protected void	safelyCreateCumulativeCountForEvent(java.lang.String name, rx.functions.Func0<com.netflix.hystrix.util.HystrixRollingNumberEvent> eventThunk)
protected void	safelyCreateRollingCountForEvent(java.lang.String name, rx.functions.Func0<com.netflix.hystrix.util.HystrixRollingNumberEvent> eventThunk)

Methods inherited from class java.lang.Object

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

Constructor Detail

HystrixCodaHaleMetricsPublisherCommand

public HystrixCodaHaleMetricsPublisherCommand(com.netflix.hystrix.HystrixCommandKey commandKey,
                                              com.netflix.hystrix.HystrixCommandGroupKey commandGroupKey,
                                              com.netflix.hystrix.HystrixCommandMetrics metrics,
                                              com.netflix.hystrix.HystrixCircuitBreaker circuitBreaker,
                                              com.netflix.hystrix.HystrixCommandProperties properties,
                                              com.codahale.metrics.MetricRegistry metricRegistry)

Method Detail

initialize

public void initialize()

An implementation note. If there's a version mismatch between hystrix-core and hystrix-codahale-metrics-publisher, the code below may reference a HystrixRollingNumberEvent that does not exist in hystrix-core. If this happens, a j.l.NoSuchFieldError occurs. Since this data is not being generated by hystrix-core, it's safe to count it as 0 and we should log an error to get users to update their dependency set.

Specified by:

initialize in interface com.netflix.hystrix.strategy.metrics.HystrixMetricsPublisherCommand

createMetricName

protected java.lang.String createMetricName(java.lang.String name)

createCumulativeCountForEvent

protected void createCumulativeCountForEvent(java.lang.String name,
                                             com.netflix.hystrix.util.HystrixRollingNumberEvent event)

safelyCreateCumulativeCountForEvent

protected void safelyCreateCumulativeCountForEvent(java.lang.String name,
                                                   rx.functions.Func0<com.netflix.hystrix.util.HystrixRollingNumberEvent> eventThunk)

createRollingCountForEvent

protected void createRollingCountForEvent(java.lang.String name,
                                          com.netflix.hystrix.util.HystrixRollingNumberEvent event)

safelyCreateRollingCountForEvent

protected void safelyCreateRollingCountForEvent(java.lang.String name,
                                                rx.functions.Func0<com.netflix.hystrix.util.HystrixRollingNumberEvent> eventThunk)