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/*
* Copyright (C) 2014 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.targetprep.companion;
import com.android.tradefed.build.IBuildInfo;
import com.android.tradefed.device.DeviceNotAvailableException;
import com.android.tradefed.device.DeviceSelectionOptions;
import com.android.tradefed.device.ITestDevice;
import com.android.tradefed.targetprep.BuildError;
import com.android.tradefed.targetprep.ITargetCleaner;
import com.android.tradefed.targetprep.TargetSetupError;
/**
* Base class that takes care of allocating and freeing companion device
* <p>
* {@link #getCompanionDeviceSelectionOptions()} should be implemented to describe the criteria
* needed to allocate the companion device
*/
public abstract class CompanionAllocator implements ITargetCleaner {
/**
* Sets up the device.
* <p>
* Internal implementation of this method will request a companion device, and invoke
* {@link #setUpWithCompanionDevice(ITestDevice, ITestDevice, IBuildInfo)}. It's recommended not
* to override this method, but put setup logic into
* {@link #setUpWithCompanionDevice(ITestDevice, ITestDevice, IBuildInfo)} instead
*/
@Override
public void setUp(ITestDevice device, IBuildInfo buildInfo) throws TargetSetupError,
BuildError, DeviceNotAvailableException {
ITestDevice companionDevice = getCompanionDeviceTracker().allocateCompanionDevice(
device, getCompanionDeviceSelectionOptions());
if (companionDevice == null) {
throw new TargetSetupError(String.format("failed to allocate companion device for %s",
device.getSerialNumber()));
}
}
/**
* Describe the {@link DeviceSelectionOptions} for the companion device
*/
protected abstract DeviceSelectionOptions getCompanionDeviceSelectionOptions();
@Override
public void tearDown(ITestDevice device, IBuildInfo buildInfo, Throwable e)
throws DeviceNotAvailableException {
getCompanionDeviceTracker().freeCompanionDevice(device);
}
private CompanionDeviceTracker getCompanionDeviceTracker() {
return CompanionDeviceTracker.getInstance();
}
}
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