TraceMetricsRecorder
public
class
TraceMetricsRecorder
extends Object
implements
IMetricsRecorder
| java.lang.Object
|
| ↳ |
com.android.tradefed.profiler.recorder.TraceMetricsRecorder
|
An IMetricsRecorder that records metrics taken from the /d/tracing directory.
Metrics to be recorded need to be provided as TraceMetrics. The default descriptor
has the format prefix:funcname:param[=expectedval]:metrictype.
Summary
Public constructors
TraceMetricsRecorder
TraceMetricsRecorder ()
Public methods
getMergeFunction
BiFunction<Double, Double, Double> getMergeFunction (String key)
Returns a BiFunction describing how to aggregate results for a particular metric over
the course of multiple test runs. Examples of relevant functions are average, sum, or count.
The BiFunction is used as an argument to merge(K, V, BiFunction).
| Parameters |
|---|
key |
String: the name of the metric |
| Returns |
|---|
BiFunction<Double, Double, Double> |
a BiFunction used to aggregate values of that metric
|
parseTraceFile
Map<String, Double> parseTraceFile (File fullTrace)
| Parameters |
|---|
fullTrace |
File |
| Returns |
|---|
Map<String, Double> |
|
setUp
void setUp (ITestDevice device,
Collection<String> descriptors)
Sets up the recorder. After calling this method, the recorder is ready to begin. This method
should be called by setUp(IInvocationContext).
| Parameters |
|---|
device |
ITestDevice: The device on which this recorder will monitor metrics. |
descriptors |
Collection: A collection of strings describing what metrics to collect and by what
means to collect them. It is up to individual implementers to decide how to interpret
these string descriptors.
|
startRecording
void startRecording ()
Begin recording metrics. This should be called at the beginning of a single test.
stopRecordingAndReturnMetrics
Map<String, Double> stopRecordingAndReturnMetrics ()
Stop recording metrics and return metrics recorded. This should be called at the end of a
single test.
| Returns |
|---|
Map<String, Double> |
a Map which contains all metrics recorded over the duration of the test. |
Protected methods
getReaderFromFile
BufferedReader getReaderFromFile (File trace)
| Throws |
|---|
FileNotFoundException |
|
