ShardMainResultForwarder

public class ShardMainResultForwarder
extends ResultForwarder implements ILogSaverListener

java.lang.Object
↳	com.android.tradefed.result.ResultForwarder
	↳	com.android.tradefed.invoker.ShardMainResultForwarder

A ResultForwarder that combines the results of a sharded test invocations. It only reports completion of the invocation to the listeners once all sharded invocations are complete.

This class is not thread safe. It is expected that clients will lock on this class when sending test results, to prevent invocation callbacks from being called out of order.

Summary

Public constructors
`ShardMainResultForwarder( listeners, int expectedShards)` Create a `ShardMainResultForwarder`.

Public methods
	`getListeners()` Get the list of listeners.
`void`	`invocationEnded(long elapsedTime)` Reports that the invocation has terminated, whether successfully or due to some error condition.
`void`	`invocationEnded(long elapsedTime, IInvocationContext context)` More detailed callback to differentiate which shard finished.
`void`	`invocationFailed(FailureDescription failure)` Reports an incomplete invocation due to some error condition.
`void`	`invocationFailed(Throwable cause)` Reports an incomplete invocation due to some error condition.
`void`	`invocationSkipped(SkipReason reason)` Reports an invocation as skipped
`void`	`invocationStarted(IInvocationContext context)` Reports the start of the test invocation.
`void`	`logAssociation(String dataName, LogFile logFile)` In some cases, log must be strongly associated with a test cases, but the opportunity to do so on the direct `testLogSaved(String, com.android.tradefed.result.LogDataType, com.android.tradefed.result.InputStreamSource, com.android.tradefed.result.LogFile)` callback is not possible.
`void`	`testLogForward(String dataName, LogDataType dataType, InputStreamSource dataStream)` Only forward the testLog instead of saving the log first.
`void`	`testLogSaved(String dataName, LogDataType dataType, InputStreamSource dataStream, LogFile logFile)` Called when the test log is saved.

Public constructors

ShardMainResultForwarder

public ShardMainResultForwarder ( listeners, 
                int expectedShards)

Create a ShardMainResultForwarder.

Parameters
`listeners`	: the list of `ITestInvocationListener` to forward results to when all shards are completed
`expectedShards`	`int`: the number of shards

Public methods

getListeners

public  getListeners ()

Get the list of listeners. Intended only for use by subclasses.

Returns
	The list of `ITestInvocationListener`s.

invocationEnded

public void invocationEnded (long elapsedTime)

Reports that the invocation has terminated, whether successfully or due to some error condition.

Will be automatically called by the TradeFederation framework.

Parameters
`elapsedTime`	`long`: the elapsed time of the invocation in ms

invocationEnded

public void invocationEnded (long elapsedTime, 
                IInvocationContext context)

More detailed callback to differentiate which shard finished.

Parameters
`elapsedTime`	`long`
`context`	`IInvocationContext`

invocationFailed

public void invocationFailed (FailureDescription failure)

Reports an incomplete invocation due to some error condition.

Will be automatically called by the TradeFederation framework.

Parameters
`failure`	`FailureDescription`: the `FailureDescription` describing the cause of the failure

invocationFailed

public void invocationFailed (Throwable cause)

Reports an incomplete invocation due to some error condition.

Will be automatically called by the TradeFederation framework.

Parameters
`cause`	`Throwable`: the `Throwable` cause of the failure

invocationSkipped

public void invocationSkipped (SkipReason reason)

Reports an invocation as skipped

Parameters
`reason`	`SkipReason`

invocationStarted

public void invocationStarted (IInvocationContext context)

Reports the start of the test invocation.

Will be automatically called by the TradeFederation framework. Reporters need to override this method to support multiple devices reporting.

Parameters
`context`	`IInvocationContext`: information about the invocation

logAssociation

public void logAssociation (String dataName, 
                LogFile logFile)

In some cases, log must be strongly associated with a test cases, but the opportunity to do so on the direct testLogSaved(String, com.android.tradefed.result.LogDataType, com.android.tradefed.result.InputStreamSource, com.android.tradefed.result.LogFile) callback is not possible. Thus, this callback allows to provide a strong association explicitly.

Parameters
`dataName`	`String`: The name of the data
`logFile`	`LogFile`: the `LogFile` that was logged before and should be associated with the test case.

testLogForward

public void testLogForward (String dataName, 
                LogDataType dataType, 
                InputStreamSource dataStream)

Only forward the testLog instead of saving the log first.

Parameters
`dataName`	`String`
`dataType`	`LogDataType`
`dataStream`	`InputStreamSource`

testLogSaved

public void testLogSaved (String dataName, 
                LogDataType dataType, 
                InputStreamSource dataStream, 
                LogFile logFile)

Called when the test log is saved.

Should be used in place of ITestInvocationListener#testLog(String, LogDataType, InputStreamSource).

Parameters
`dataName`	`String`: a `String` descriptive name of the data. e.g. "device_logcat". Note dataName may not be unique per invocation. ie implementers must be able to handle multiple calls with same dataName
`dataType`	`LogDataType`: the `LogDataType` of the data
`dataStream`	`InputStreamSource`: the `InputStreamSource` of the data. Implementers should call createInputStream to start reading the data, and ensure to close the resulting InputStream when complete.
`logFile`	`LogFile`: the `LogFile` containing the meta data of the saved file.