Fixed problem with proof of work
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491a8a0ccb
commit
adfb3a920a
@ -9,7 +9,7 @@ android {
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applicationId "ch.dissem.apps.abit"
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minSdkVersion 19
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targetSdkVersion 23
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versionCode 3
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versionCode 5
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versionName "1.0-beta"
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}
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signingConfigs {
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@ -29,16 +29,17 @@ android {
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}
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}
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ext.jabitVersion = '1.0.0'
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dependencies {
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compile fileTree(dir: 'libs', include: ['*.jar'])
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compile 'com.android.support:appcompat-v7:23.1.1'
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compile 'com.android.support:support-v4:23.1.1'
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compile 'com.android.support:design:23.1.1'
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compile 'ch.dissem.jabit:jabit-core:0.2.1-SNAPSHOT'
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compile 'ch.dissem.jabit:jabit-networking:0.2.1-SNAPSHOT'
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compile 'ch.dissem.jabit:jabit-cryptography-spongy:0.2.1-SNAPSHOT'
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compile 'ch.dissem.jabit:jabit-extensions:0.2.1-SNAPSHOT'
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compile "ch.dissem.jabit:jabit-core:$jabitVersion"
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compile "ch.dissem.jabit:jabit-networking:$jabitVersion"
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compile "ch.dissem.jabit:jabit-cryptography-spongy:$jabitVersion"
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compile "ch.dissem.jabit:jabit-extensions:$jabitVersion"
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compile 'org.slf4j:slf4j-android:1.7.12'
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@ -32,23 +32,30 @@ public class ProofOfWorkNotification extends AbstractNotification {
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public ProofOfWorkNotification(Context ctx) {
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super(ctx);
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NotificationCompat.Builder builder = new NotificationCompat.Builder(ctx);
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Intent showMessageIntent = new Intent(ctx, MainActivity.class);
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PendingIntent pendingIntent = PendingIntent.getActivity(ctx, 0, showMessageIntent, PendingIntent.FLAG_UPDATE_CURRENT);
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builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
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.setUsesChronometer(true)
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.setSmallIcon(R.drawable.ic_notification_proof_of_work)
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.setContentTitle(ctx.getString(R.string.proof_of_work_title))
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.setContentText(ctx.getString(R.string.proof_of_work_text))
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.setContentIntent(pendingIntent);
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notification = builder.build();
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update(1);
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}
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@Override
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protected int getNotificationId() {
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return ONGOING_NOTIFICATION_ID;
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}
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public ProofOfWorkNotification update(int numberOfItems) {
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NotificationCompat.Builder builder = new NotificationCompat.Builder(ctx);
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Intent showMessageIntent = new Intent(ctx, MainActivity.class);
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PendingIntent pendingIntent = PendingIntent.getActivity(ctx, 0, showMessageIntent,
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PendingIntent.FLAG_UPDATE_CURRENT);
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builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
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.setUsesChronometer(true)
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.setOngoing(true)
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.setSmallIcon(R.drawable.ic_notification_proof_of_work)
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.setContentTitle(ctx.getString(R.string.proof_of_work_title))
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.setContentText(ctx.getString(R.string.proof_of_work_text, numberOfItems))
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.setContentIntent(pendingIntent);
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notification = builder.build();
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return this;
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}
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}
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@ -22,10 +22,8 @@ import android.os.Binder;
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import android.os.IBinder;
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import android.support.annotation.Nullable;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.lang.ref.WeakReference;
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import java.util.LinkedList;
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import java.util.Queue;
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import ch.dissem.apps.abit.notification.ProofOfWorkNotification;
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import ch.dissem.bitmessage.ports.MultiThreadedPOWEngine;
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@ -38,11 +36,12 @@ import static ch.dissem.apps.abit.notification.ProofOfWorkNotification.ONGOING_N
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* killed by the system before the nonce is found.
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*/
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public class ProofOfWorkService extends Service {
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public static final Logger LOG = LoggerFactory.getLogger(ProofOfWorkService.class);
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// Object to use as a thread-safe lock
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private static final Object lock = new Object();
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private static ProofOfWorkEngine engine;
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private static boolean calculating;
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private static final Queue<PowItem> queue = new LinkedList<>();
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private static ProofOfWorkNotification notification;
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@Override
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public void onCreate() {
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@ -51,54 +50,74 @@ public class ProofOfWorkService extends Service {
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engine = new MultiThreadedPOWEngine();
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}
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}
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notification = new ProofOfWorkNotification(this);
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}
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@Nullable
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@Override
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public IBinder onBind(Intent intent) {
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return new PowBinder(engine, this);
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return new PowBinder(this);
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}
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public static class PowBinder extends Binder {
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private final ProofOfWorkEngine engine;
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private final ProofOfWorkService service;
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private PowBinder(ProofOfWorkEngine engine, ProofOfWorkService service) {
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this.engine = new EngineWrapper(engine, service);
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private PowBinder(ProofOfWorkService service) {
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this.service = service;
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}
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public ProofOfWorkEngine getEngine() {
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return engine;
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public void process(PowItem item) {
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synchronized (queue) {
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service.startService(new Intent(service, ProofOfWorkService.class));
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service.startForeground(ONGOING_NOTIFICATION_ID,
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notification.getNotification());
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if (!calculating) {
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calculating = true;
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service.calculateNonce(item);
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} else {
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queue.add(item);
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notification.update(queue.size()).show();
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}
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}
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}
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}
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private static class EngineWrapper implements ProofOfWorkEngine {
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private final ProofOfWorkNotification notification;
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private final ProofOfWorkEngine engine;
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private final WeakReference<ProofOfWorkService> serviceRef;
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private EngineWrapper(ProofOfWorkEngine engine, ProofOfWorkService service) {
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this.engine = engine;
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this.serviceRef = new WeakReference<>(service);
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this.notification = new ProofOfWorkNotification(service);
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static class PowItem {
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private final byte[] initialHash;
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private final byte[] targetValue;
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private final ProofOfWorkEngine.Callback callback;
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PowItem(byte[] initialHash, byte[] targetValue, ProofOfWorkEngine.Callback callback) {
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this.initialHash = initialHash;
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this.targetValue = targetValue;
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this.callback = callback;
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}
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}
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@Override
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public void calculateNonce(byte[] initialHash, byte[] target, final Callback callback) {
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final ProofOfWorkService service = serviceRef.get();
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service.startService(new Intent(service, ProofOfWorkService.class));
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service.startForeground(ONGOING_NOTIFICATION_ID, notification.getNotification());
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engine.calculateNonce(initialHash, target, new ProofOfWorkEngine.Callback() {
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@Override
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public void onNonceCalculated(byte[] initialHash, byte[] nonce) {
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try {
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callback.onNonceCalculated(initialHash, nonce);
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} finally {
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service.stopForeground(true);
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service.stopSelf();
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private void calculateNonce(final PowItem item) {
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engine.calculateNonce(item.initialHash, item.targetValue, new ProofOfWorkEngine.Callback() {
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@Override
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public void onNonceCalculated(byte[] initialHash, byte[] nonce) {
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try {
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item.callback.onNonceCalculated(initialHash, nonce);
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} finally {
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PowItem item;
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synchronized (queue) {
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item = queue.poll();
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if (item == null) {
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calculating = false;
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stopForeground(true);
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stopSelf();
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} else {
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notification.update(queue.size()).show();
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}
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}
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if (item != null) {
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calculateNonce(item);
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}
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}
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});
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}
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}
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});
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}
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}
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@ -22,9 +22,11 @@ import android.content.Intent;
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import android.content.ServiceConnection;
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import android.os.IBinder;
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import java.util.concurrent.Semaphore;
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import java.util.LinkedList;
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import java.util.Queue;
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import ch.dissem.apps.abit.service.ProofOfWorkService.PowBinder;
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import ch.dissem.apps.abit.service.ProofOfWorkService.PowItem;
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import ch.dissem.bitmessage.ports.ProofOfWorkEngine;
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import static android.content.Context.BIND_AUTO_CREATE;
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@ -32,12 +34,12 @@ import static android.content.Context.BIND_AUTO_CREATE;
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/**
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* Proof of Work engine that uses the Proof of Work service.
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*/
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public class ServicePowEngine implements ProofOfWorkEngine, ProofOfWorkEngine.Callback {
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private final Semaphore semaphore = new Semaphore(1, true);
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public class ServicePowEngine implements ProofOfWorkEngine {
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private final Context ctx;
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private byte[] initialHash, targetValue;
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private Callback callback;
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private static final Object lock = new Object();
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private Queue<PowItem> queue = new LinkedList<>();
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private PowBinder service;
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public ServicePowEngine(Context ctx) {
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this.ctx = ctx;
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@ -46,32 +48,31 @@ public class ServicePowEngine implements ProofOfWorkEngine, ProofOfWorkEngine.Ca
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private ServiceConnection connection = new ServiceConnection() {
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@Override
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public void onServiceConnected(ComponentName name, IBinder service) {
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((PowBinder) service).getEngine().calculateNonce(initialHash, targetValue, ServicePowEngine.this);
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synchronized (lock) {
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ServicePowEngine.this.service = (PowBinder) service;
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while (!queue.isEmpty()) {
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ServicePowEngine.this.service.process(queue.poll());
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}
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}
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}
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@Override
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public void onServiceDisconnected(ComponentName name) {
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semaphore.release();
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service = null;
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}
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};
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@Override
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public void calculateNonce(byte[] initialHash, byte[] targetValue, Callback callback) {
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try {
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semaphore.acquire();
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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PowItem item = new PowItem(initialHash, targetValue, callback);
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synchronized (lock) {
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if (service != null) {
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service.process(item);
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} else {
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queue.add(item);
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ctx.bindService(new Intent(ctx, ProofOfWorkService.class), connection,
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BIND_AUTO_CREATE);
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}
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}
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this.initialHash = initialHash;
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this.targetValue = targetValue;
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this.callback = callback;
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ctx.bindService(new Intent(ctx, ProofOfWorkService.class), connection, BIND_AUTO_CREATE);
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}
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@Override
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public void onNonceCalculated(byte[] initialHash, byte[] bytes) {
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callback.onNonceCalculated(initialHash, bytes);
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ctx.unbindService(connection);
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}
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}
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}
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@ -42,7 +42,7 @@
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<string name="connection_info_n">Stream %1$d: %2$d Verbindungen</string>
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<string name="connection_info_disconnected">Getrennt</string>
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<string name="connection_info_pending">Verbindung wird aufgebaut…</string>
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<string name="proof_of_work_text">Warnung: dies könnte das Gerät erwärmen bis die Batterie leer ist.</string>
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<string name="proof_of_work_text">Arbeite am Versenden (%1$d in Warteschlange)</string>
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<string name="proof_of_work_title">Proof of Work</string>
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<string name="error_invalid_sync_host">Synchronisation fehlgeschlagen: der vertrauenswürdige Knoten konnte nicht erreicht werden.</string>
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<string name="error_invalid_sync_port">Ungültiger Port in den Synchronisationseinstellungen: %s</string>
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@ -44,7 +44,7 @@
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<string name="connection_info_disconnected">Disconnected</string>
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<string name="connection_info_pending">Connecting…</string>
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<string name="proof_of_work_title">Proof of Work</string>
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<string name="proof_of_work_text">Warning: This might heat your device until the battery\'s dead.</string>
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<string name="proof_of_work_text">Doing work to send message (%1$d queued)</string>
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<string name="error_invalid_sync_port">Invalid port in synchronization settings: %s</string>
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<string name="error_invalid_sync_host">Synchronization failed: Trusted node could not be reached.</string>
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<string name="compose_body_hint">Write message</string>
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