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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.tradefed.invoker;
import com.android.tradefed.result.ILogSaver;
import com.android.tradefed.result.ITestInvocationListener;
import com.android.tradefed.result.LogSaverResultForwarder;
import com.android.tradefed.result.ResultForwarder;
import java.util.List;
/**
* A {@link 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.
*
* <p>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.
*/
public class ShardMasterResultForwarder extends LogSaverResultForwarder {
private int mShardsRemaining;
private int mTotalElapsed = 0;
private boolean mStartReported = false;
/**
* Create a {@link ShardMasterResultForwarder}.
*
* @param listeners the list of {@link ITestInvocationListener} to forward results to when all
* shards are completed
* @param expectedShards the number of shards
*/
public ShardMasterResultForwarder(ILogSaver logSaver,
List<ITestInvocationListener> listeners, int expectedShards) {
super(logSaver, listeners);
mShardsRemaining = expectedShards;
}
/**
* {@inheritDoc}
*/
@Override
public void invocationStarted(IInvocationContext context) {
if (!mStartReported) {
super.invocationStarted(context);
mStartReported = true;
}
}
/**
* {@inheritDoc}
*/
@Override
public void invocationFailed(Throwable cause) {
// one of the shards failed. Fail the whole invocation
// TODO: does any extra logging need to be done ?
super.invocationFailed(cause);
}
/**
* {@inheritDoc}
*/
@Override
public void invocationEnded(long elapsedTime) {
mTotalElapsed += elapsedTime;
mShardsRemaining--;
if (mShardsRemaining <= 0) {
super.invocationEnded(mTotalElapsed);
}
}
}
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