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IPostProcessor

public interface IPostProcessor
implements ITestInvocationListener, ILogSaverListener, IDisableable

com.android.tradefed.postprocessor.IPostProcessor

Known indirect subclasses

AggregatePostProcessor, AveragePostProcessor, BasePostProcessor, StatsdEventMetricPostProcessor, StatsdGenericPostProcessor

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.
StatsdEventMetricPostProcessor	A post processor that processes event metrics in statsd reports into key-value pairs, using the formatters specified on the processor.
StatsdGenericPostProcessor	A post processor that processes binary proto statsd reports into key-value pairs by expanding the report as a tree structure.

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`	`processAllTestMetricsAndLogs(ListMultimap<String, MetricMeasurement.Metric> allTestMetrics, allTestLogs)` Implement this method to aggregate metrics and logs across all tests.
`abstract`	`processRunMetricsAndLogs( rawMetrics, runLogs)` Implement this method in order to generate a set of new metrics from the existing metrics and logs.
`abstract`	`processTestMetricsAndLogs(TestDescription testDescription, testMetrics, testLogs)` Implement this method to post process metrics and logs 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`

processAllTestMetricsAndLogs

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

Implement this method to aggregate metrics and logs across all tests. Metrics coming out of this method will be reporter as run metrics. Only the newly generated metrics should be returned, and with unique key name (no collision with existing keys are allowed).

Parameters
`allTestMetrics`	`ListMultimap`: A HashMultimap storing the metrics from each test grouped by metric names.
`allTestLogs`	: A map storing each test's map of log files keyed by their data names, using the each test's `TestDescription` as keys.

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

processRunMetricsAndLogs

public abstract  processRunMetricsAndLogs ( rawMetrics, 
                 runLogs)

Implement this method in order to generate a set of new metrics from the existing metrics and logs. 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.
`runLogs`	: The set of log files for the test run.

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

processTestMetricsAndLogs

public abstract  processTestMetricsAndLogs (TestDescription testDescription, 
                 testMetrics, 
                 testLogs)

Implement this method to post process metrics and logs from each test. Only the newly generated metrics should be returned, and with unique key name (no collision with existing keys are allowed).

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

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