com.amazonaws.metrics.internal.cloudwatch.spi

Interface RequestMetricTransformer

public interface RequestMetricTransformer

Internal SPI used to provide custom request metric transformer that can be added to or override the default AWS SDK implementation. Implementation of this interface should ensure the Object.equals(Object) and Object.hashCode() methods are overridden as necessary.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	RequestMetricTransformer.Utils Common utilities for implementing this SPI.

Field Summary

Fields

Modifier and Type	Field and Description
static RequestMetricTransformer	NONE A convenient instance of a no-op request metric transformer.

Method Summary

Methods

Modifier and Type	Method and Description
List<MetricDatum>	toMetricData(com.amazonaws.metrics.MetricType metricType, com.amazonaws.Request<?> request, com.amazonaws.Response<?> response) Returns a list of metric datum for the metrics collected for the given request/response, or null if this transformer does not recognize the specific input metric type.

Field Detail

NONE

static final RequestMetricTransformer NONE

A convenient instance of a no-op request metric transformer.

Method Detail

toMetricData

List<MetricDatum> toMetricData(com.amazonaws.metrics.MetricType metricType,
                             com.amazonaws.Request<?> request,
                             com.amazonaws.Response<?> response)

Returns a list of metric datum for the metrics collected for the given request/response, or null if this transformer does not recognize the specific input metric type.

Note returning an empty list means the transformer recognized the metric type but concluded there is no metrics to be generated for it.

Parameters:

metricType - the predefined metric type