IPostProcessor

public interface IPostProcessor
implements ITestInvocationListener, ILogSaverListener, IDisableable

com.android.tradefed.postprocessor.IPostProcessor

Known indirect subclasses

AggregatePostProcessor, AveragePostProcessor, BasePostProcessor

AggregatePostProcessor	A metric aggregator that gives the min, max, mean, variance and standard deviation for numeric metrics collected during multiple-iteration test runs, treating them as doubles.
AveragePostProcessor	Implementation of post processor that calculate the average of the list of metrics.
BasePostProcessor	The base `IPostProcessor` that every implementation should extend.

Post processors is a Trade Federation object meant to allow the processing of metrics and logs AFTER the tests and BEFORE result reporting. This allows to post-process some data and have all result_reporter objects receive it, rather than doing the post-processing inside only one result_reporter and having issue to pass the new data around.

Summary

Public methods
`abstract ITestInvocationListener`	`init(ITestInvocationListener listener)` Initialization step of the post processor.
`abstract`	`processAllTestMetrics(ListMultimap<String, MetricMeasurement.Metric> allTestMetrics)` Implement this method to aggregate test metrics.
`abstract`	`processRunMetrics( rawMetrics)` Implement this method in order to generate a set of new metrics from the existing one.
`abstract`	`processTestMetrics(TestDescription testDescription, testMetrics)` Implement this method to process metrics from each test.

Public methods

init

public abstract ITestInvocationListener init (ITestInvocationListener listener)

Initialization step of the post processor. Ensured to be called before any of the tests callbacks.

Parameters
`listener`	`ITestInvocationListener`

Returns
`ITestInvocationListener`

processAllTestMetrics

public abstract  processAllTestMetrics (ListMultimap<String, MetricMeasurement.Metric> allTestMetrics)

Implement this method to aggregate test metrics.

Parameters
`allTestMetrics`	`ListMultimap`: A HashMultimap storing the metrics from each test grouped by metric names.

Returns
	The set of newly generated metrics from all test metrics.

processRunMetrics

public abstract  processRunMetrics ( rawMetrics)

Implement this method in order to generate a set of new metrics from the existing one. Only the newly generated metrics should be returned, and with unique key name (no collision with existing keys are allowed).

Parameters
`rawMetrics`	: The set of raw metrics available for the run.

Returns
	The set of newly generated metrics from the run metrics.

processTestMetrics

public abstract  processTestMetrics (TestDescription testDescription, 
                 testMetrics)

Implement this method to process metrics from each test.

Parameters
`testDescription`	`TestDescription`: The TestDescription object describing the test.
`testMetrics`	: The set of metrics from the test.

Returns
	The set of newly generated metrics from the test metrics.