Restart WearableSensingService process before sending connection (1d8b88f0) · Commits · e / os / android_frameworks_base

core/java/android/app/wearable/WearableSensingManager.java

+4 −3

Original line number	Diff line number	Diff line
		@@ -206,9 +206,10 @@ public class WearableSensingManager {
		* and kill the WearableSensingService process.
		*
		* <p>Before providing the secureWearableConnection, the system will restart the
		* WearableSensingService process. Other method calls into WearableSensingService may be dropped
		* during the restart. The caller is responsible for ensuring other method calls are queued
		* until a success status is returned from the {@code statusConsumer}.
		* WearableSensingService process if it has not been restarted since the last
		* secureWearableConnection was provided. Other method calls into WearableSensingService may be
		* dropped during the restart. The caller is responsible for ensuring other method calls are
		* queued until a success status is returned from the {@code statusConsumer}.
		*
		* @param wearableConnection The connection to provide
		* @param executor Executor on which to run the consumer callback

core/java/android/service/wearable/IWearableSensingService.aidl

+1 −0

Original line number	Diff line number	Diff line
		@@ -37,4 +37,5 @@ oneway interface IWearableSensingService {
		in RemoteCallback detectionResultCallback, in RemoteCallback statusCallback);
		void stopDetection(in String packageName);
		void queryServiceStatus(in int[] eventTypes, in String packageName, in RemoteCallback callback);
		void killProcess();
		}
		No newline at end of file

core/java/android/service/wearable/WearableSensingService.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -32,6 +32,7 @@ import android.os.Bundle;
		import android.os.IBinder;
		import android.os.ParcelFileDescriptor;
		import android.os.PersistableBundle;
		import android.os.Process;
		import android.os.RemoteCallback;
		import android.os.SharedMemory;
		import android.service.ambientcontext.AmbientContextDetectionResult;
		@@ -242,6 +243,13 @@ public abstract class WearableSensingService extends Service {
		WearableSensingService.this.onQueryServiceStatus(
		new HashSet<>(Arrays.asList(events)), packageName, consumer);
		}

		/** {@inheritDoc} */
		@Override
		public void killProcess() {
		Slog.d(TAG, "#killProcess");
		Process.killProcess(Process.myPid());
		}
		};
		}
		Slog.w(TAG, "Incorrect service interface, returning null.");

services/core/java/com/android/server/wearable/RemoteWearableSensingService.java

+102 −11

Original line number	Diff line number	Diff line
		@@ -19,6 +19,8 @@ package com.android.server.wearable;
		import static android.content.Context.BIND_FOREGROUND_SERVICE;
		import static android.content.Context.BIND_INCLUDE_CAPABILITIES;

		import android.app.wearable.Flags;
		import android.app.wearable.WearableSensingManager;
		import android.content.ComponentName;
		import android.content.Context;
		import android.content.Intent;
		@@ -30,6 +32,7 @@ import android.service.wearable.IWearableSensingService;
		import android.service.wearable.WearableSensingService;
		import android.util.Slog;

		import com.android.internal.annotations.GuardedBy;
		import com.android.internal.infra.ServiceConnector;

		import java.io.IOException;
		@@ -40,6 +43,17 @@ final class RemoteWearableSensingService extends ServiceConnector.Impl<IWearable
		com.android.server.wearable.RemoteWearableSensingService.class.getSimpleName();
		private final static boolean DEBUG = false;

		private final Object mSecureWearableConnectionLock = new Object();

		// mNextSecureWearableConnectionContext will only be non-null when we are waiting for the
		// WearableSensingService process to restart. It will be set to null after it is passed into
		// WearableSensingService.
		@GuardedBy("mSecureWearableConnectionLock")
		private SecureWearableConnectionContext mNextSecureWearableConnectionContext;

		@GuardedBy("mSecureWearableConnectionLock")
		private boolean mSecureWearableConnectionProvided = false;

		RemoteWearableSensingService(Context context, ComponentName serviceName,
		int userId) {
		super(context, new Intent(
		@@ -66,11 +80,55 @@ final class RemoteWearableSensingService extends ServiceConnector.Impl<IWearable
		public void provideSecureWearableConnection(
		ParcelFileDescriptor secureWearableConnection, RemoteCallback callback) {
		if (DEBUG) {
		Slog.i(TAG, "Providing secure wearable connection.");
		Slog.i(TAG, "#provideSecureWearableConnection");
		}
		var unused = post(
		if (!Flags.enableRestartWssProcess()) {
		Slog.d(
		TAG,
		"FLAG_ENABLE_RESTART_WSS_PROCESS is disabled. Do not attempt to restart the"
		+ " WearableSensingService process");
		provideSecureWearableConnectionInternal(secureWearableConnection, callback);
		return;
		}
		synchronized (mSecureWearableConnectionLock) {
		if (mNextSecureWearableConnectionContext != null) {
		// A process restart is in progress, #binderDied is about to be called. Replace
		// the previous mNextSecureWearableConnectionContext with the current one
		Slog.i(
		TAG,
		"A new wearable connection is provided before the process restart triggered"
		+ " by the previous connection is complete. Discarding the previous"
		+ " connection.");
		if (Flags.enableProvideWearableConnectionApi()) {
		WearableSensingManagerPerUserService.notifyStatusCallback(
		mNextSecureWearableConnectionContext.mStatusCallback,
		WearableSensingManager.STATUS_CHANNEL_ERROR);
		}
		mNextSecureWearableConnectionContext =
		new SecureWearableConnectionContext(secureWearableConnection, callback);
		return;
		}
		if (!mSecureWearableConnectionProvided) {
		// no need to kill the process
		provideSecureWearableConnectionInternal(secureWearableConnection, callback);
		mSecureWearableConnectionProvided = true;
		return;
		}
		mNextSecureWearableConnectionContext =
		new SecureWearableConnectionContext(secureWearableConnection, callback);
		// Killing the process causes the binder to die. #binderDied will then be triggered
		killWearableSensingServiceProcess();
		}
		}

		private void provideSecureWearableConnectionInternal(
		ParcelFileDescriptor secureWearableConnection, RemoteCallback callback) {
		Slog.d(TAG, "Providing secure wearable connection.");
		var unused =
		post(
		service -> {
		service.provideSecureWearableConnection(secureWearableConnection, callback);
		service.provideSecureWearableConnection(
		secureWearableConnection, callback);
		try {
		// close the local fd after it has been sent to the WSS process
		secureWearableConnection.close();
		@@ -80,6 +138,28 @@ final class RemoteWearableSensingService extends ServiceConnector.Impl<IWearable
		});
		}

		@Override
		public void binderDied() {
		super.binderDied();
		synchronized (mSecureWearableConnectionLock) {
		if (mNextSecureWearableConnectionContext != null) {
		// This will call #post, which will recreate the process and bind to it
		provideSecureWearableConnectionInternal(
		mNextSecureWearableConnectionContext.mSecureWearableConnection,
		mNextSecureWearableConnectionContext.mStatusCallback);
		mNextSecureWearableConnectionContext = null;
		} else {
		mSecureWearableConnectionProvided = false;
		Slog.w(TAG, "Binder died but there is no secure wearable connection to provide.");
		}
		}
		}

		/** Kills the WearableSensingService process. */
		public void killWearableSensingServiceProcess() {
		var unused = post(service -> service.killProcess());
		}

		/**
		* Provides the implementation a data stream to the wearable.
		*
		@@ -176,4 +256,15 @@ final class RemoteWearableSensingService extends ServiceConnector.Impl<IWearable
		packageName,
		statusCallback));
		}

		private static class SecureWearableConnectionContext {
		final ParcelFileDescriptor mSecureWearableConnection;
		final RemoteCallback mStatusCallback;

		SecureWearableConnectionContext(
		ParcelFileDescriptor secureWearableConnection, RemoteCallback statusCallback) {
		this.mSecureWearableConnection = secureWearableConnection;
		this.mStatusCallback = statusCallback;
		}
		}
		}

services/core/java/com/android/server/wearable/WearableSensingManagerPerUserService.java

+16 −5

Original line number	Diff line number	Diff line
		@@ -44,6 +44,7 @@ import com.android.server.infra.AbstractPerUserSystemService;

		import java.io.IOException;
		import java.io.PrintWriter;
		import java.util.concurrent.atomic.AtomicReference;

		/**
		* Per-user manager service for managing sensing {@link AmbientContextEvent}s on Wearables.
		@@ -68,7 +69,7 @@ final class WearableSensingManagerPerUserService extends
		super(master, lock, userId);
		}

		static void notifyStatusCallback(RemoteCallback statusCallback, int statusCode) {
		public static void notifyStatusCallback(RemoteCallback statusCallback, int statusCode) {
		Bundle bundle = new Bundle();
		bundle.putInt(
		WearableSensingManager.STATUS_RESPONSE_BUNDLE_KEY, statusCode);
		@@ -183,11 +184,11 @@ final class WearableSensingManagerPerUserService extends
		}
		synchronized (mSecureChannelLock) {
		if (mSecureChannel != null) {
		// TODO(b/321012559): Kill the WearableSensingService process if it has not been
		// killed from onError
		mSecureChannel.close();
		}
		try {
		final AtomicReference<WearableSensingSecureChannel> currentSecureChannelRef =
		new AtomicReference<>();
		mSecureChannel =
		WearableSensingSecureChannel.create(
		getContext().getSystemService(CompanionDeviceManager.class),
		@@ -206,8 +207,17 @@ final class WearableSensingManagerPerUserService extends

		@Override
		public void onError() {
		// TODO(b/321012559): Kill the WearableSensingService
		// process if mSecureChannel has not been reassigned
		if (Flags.enableRestartWssProcess()) {
		synchronized (mSecureChannelLock) {
		if (mSecureChannel != null
		&& mSecureChannel
		== currentSecureChannelRef.get()) {
		mRemoteService
		.killWearableSensingServiceProcess();
		mSecureChannel = null;
		}
		}
		}
		if (Flags.enableProvideWearableConnectionApi()) {
		notifyStatusCallback(
		callback,
		@@ -215,6 +225,7 @@ final class WearableSensingManagerPerUserService extends
		}
		}
		});
		currentSecureChannelRef.set(mSecureChannel);
		} catch (IOException ex) {
		Slog.e(TAG, "Unable to create the secure channel.", ex);
		if (Flags.enableProvideWearableConnectionApi()) {