BlockingPublish.java
/*
* Copyright (C) 2017 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 androidx.test.services.shellexecutor;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import androidx.test.services.speakeasy.SpeakEasyProtocol.PublishResult;
import androidx.test.services.speakeasy.client.PublishResultReceiver;
import androidx.test.services.speakeasy.client.ToolConnection;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* Synchronously publishes a {@link IBinder} and returns a {@link PublishResult} from SpeakEasy.
*
* @throws InterruptedException if find not successful in 5 seconds.
*/
final class BlockingPublish extends PublishResultReceiver {
private static final String TAG = "PublishResultReceiver";
private static final int WAIT_TIME = 30;
private static final int WAIT_INTERVAL = 5;
private final CountDownLatch latch;
private List<PublishResult> publishResults = new CopyOnWriteArrayList<>();
private BlockingPublish(Handler h) {
super(h);
latch = new CountDownLatch(2);
}
@Override
protected void handlePublishResult(PublishResult findResult) {
this.publishResults.add(findResult);
Log.i(TAG, "Received result " + findResult.key);
latch.countDown();
}
private List<PublishResult> waitOnResults() throws InterruptedException {
int awaitTime = 0;
while (true) {
if (latch.await(WAIT_INTERVAL, TimeUnit.SECONDS)) {
Log.d(TAG, "Publish successful");
return publishResults;
} else {
awaitTime += WAIT_INTERVAL;
if (awaitTime < WAIT_TIME) {
Log.i(TAG, "Waiting " + awaitTime + " for SpeakEasy publish");
} else {
throw new InterruptedException(
"Timed out after " + WAIT_TIME + " seconds while waiting for SpeakEasy publish");
}
}
}
}
public static PublishResult getResult(Looper looper, IBinder binder) throws InterruptedException {
BlockingPublish receiver = new BlockingPublish(new Handler(looper));
// connect to both android.support.test and androidx.test speakeasy in parallel
ToolConnection.makeConnection().publish(binder, receiver);
ToolConnection.makeAtslConnection().publish(binder, receiver);
List<PublishResult> publishResults = receiver.waitOnResults();
return getBestResult(publishResults);
}
private static PublishResult getBestResult(List<PublishResult> results) {
PublishResult bestResult = null;
for (PublishResult result : results) {
if (result.published) {
bestResult = result;
} else if (bestResult == null) {
bestResult = result;
}
}
return bestResult;
}
};