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Commit 7779e092 authored by Kathy Chen's avatar Kathy Chen Committed by Automerger Merge Worker
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Merge "Stabalize AmbientContext detection by restoring client requests." into... 

Merge "Stabalize AmbientContext detection by restoring client requests." into tm-dev am: 889d4894 am: cb65f157

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17893731



Change-Id: I3c3f1cc11cbc93e6e2727396c26dd85c6001a5a9
Ignore-AOSP-First: this is an automerge
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 282e764d cb65f157

services/core/java/com/android/server/ambientcontext/AmbientContextManagerPerUserService.java

+34 −53
Original line number Diff line number Diff line
@@ -43,7 +43,6 @@ import android.os.RemoteException; 
import android.service.ambientcontext.AmbientContextDetectionResult;

import android.service.ambientcontext.AmbientContextDetectionServiceStatus;

import android.text.TextUtils;

import android.util.ArraySet;

import android.util.IndentingPrintWriter;

import android.util.Slog;
@@ -54,7 +53,6 @@ import com.android.server.infra.AbstractPerUserSystemService; 
import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Set;



/**

 * Per-user manager service for {@link AmbientContextEvent}s.
@@ -69,19 +67,13 @@ final class AmbientContextManagerPerUserService extends 
    RemoteAmbientContextDetectionService mRemoteService;



    private ComponentName mComponentName;

    private Set<PendingIntent> mExistingPendingIntents;



    AmbientContextManagerPerUserService(

            @NonNull AmbientContextManagerService master, Object lock, @UserIdInt int userId) {

        super(master, lock, userId);

        mExistingPendingIntents = new ArraySet<>();

    }



    void destroyLocked() {

        if (isVerbose()) {

            Slog.v(TAG, "destroyLocked()");

        }



        Slog.d(TAG, "Trying to cancel the remote request. Reason: Service destroyed.");

        if (mRemoteService != null) {

            synchronized (mLock) {
@@ -118,7 +110,19 @@ final class AmbientContextManagerPerUserService extends 
        if (mComponentName == null) {

            mComponentName = updateServiceInfoLocked();

        }

        return mComponentName != null;

        if (mComponentName == null) {

            return false;

        }



        ServiceInfo serviceInfo;

        try {

            serviceInfo = AppGlobals.getPackageManager().getServiceInfo(

                    mComponentName, 0, mUserId);

        } catch (RemoteException e) {

            Slog.w(TAG, "RemoteException while setting up service");

            return false;

        }

        return serviceInfo != null;

    }



    @Override
@@ -171,18 +175,10 @@ final class AmbientContextManagerPerUserService extends 
                return;

            }



            // Remove any existing PendingIntent for this package.

            String callingPackage = pendingIntent.getCreatorPackage();

            PendingIntent duplicatePendingIntent = findExistingRequestByPackage(callingPackage);

            if (duplicatePendingIntent != null) {

                Slog.d(TAG, "Replace duplicate request from " + callingPackage);

                mExistingPendingIntents.remove(duplicatePendingIntent);

            }



            // Register package and add pendingIntent to mExistingPendingIntents

            startDetection(request, callingPackage, createDetectionResultRemoteCallback(),

                    getServerStatusCallback(clientStatusCallback));

            mExistingPendingIntents.add(pendingIntent);

            // Register package and add to existing ClientRequests cache

            startDetection(request, pendingIntent.getCreatorPackage(),

                    createDetectionResultRemoteCallback(), clientStatusCallback);

            mMaster.newClientAdded(mUserId, request, pendingIntent, clientStatusCallback);

        }

    }
@@ -214,15 +210,17 @@ final class AmbientContextManagerPerUserService extends 


    @VisibleForTesting

    void startDetection(AmbientContextEventRequest request, String callingPackage,

            RemoteCallback detectionResultCallback, RemoteCallback statusCallback) {

            RemoteCallback detectionResultCallback, RemoteCallback clientStatusCallback) {

        Slog.d(TAG, "Requested detection of " + request.getEventTypes());

        synchronized (mLock) {

            if (setUpServiceIfNeeded()) {

                ensureRemoteServiceInitiated();

                mRemoteService.startDetection(request, callingPackage, detectionResultCallback,

                        statusCallback);

                        getServerStatusCallback(clientStatusCallback));

            } else {

                Slog.w(TAG, "No valid component found for AmbientContextDetectionService");

                sendStatusToCallback(clientStatusCallback,

                        AmbientContextManager.STATUS_NOT_SUPPORTED);

            }

        }

    }
@@ -245,15 +243,8 @@ final class AmbientContextManagerPerUserService extends 
     */

    public void onUnregisterObserver(String callingPackage) {

        synchronized (mLock) {

            PendingIntent pendingIntent = findExistingRequestByPackage(callingPackage);

            if (pendingIntent == null) {

                Slog.d(TAG, "No registration found for " + callingPackage);

                return;

            }



            // Remove from existing requests

            mExistingPendingIntents.remove(pendingIntent);

            stopDetection(pendingIntent.getCreatorPackage());

            stopDetection(callingPackage);

            mMaster.clientRemoved(mUserId, callingPackage);

        }

    }
@@ -265,7 +256,7 @@ final class AmbientContextManagerPerUserService extends 
            if (!setUpServiceIfNeeded()) {

                Slog.w(TAG, "Detection service is not available at this moment.");

                sendStatusToCallback(statusCallback,

                        AmbientContextManager.STATUS_SERVICE_UNAVAILABLE);

                        AmbientContextManager.STATUS_NOT_SUPPORTED);

                return;

            }

            ensureRemoteServiceInitiated();
@@ -382,16 +373,6 @@ final class AmbientContextManagerPerUserService extends 
        }

    }



    @Nullable

    private PendingIntent findExistingRequestByPackage(String callingPackage) {

        for (PendingIntent pendingIntent : mExistingPendingIntents) {

            if (pendingIntent.getCreatorPackage().equals(callingPackage)) {

                return pendingIntent;

            }

        }

        return null;

    }



    /**

     * Sends out the Intent to the client after the event is detected.

     *
@@ -418,22 +399,22 @@ final class AmbientContextManagerPerUserService extends 
    }



    @NonNull

    private RemoteCallback createDetectionResultRemoteCallback() {

    RemoteCallback createDetectionResultRemoteCallback() {

        return new RemoteCallback(result -> {

            AmbientContextDetectionResult detectionResult =

                    (AmbientContextDetectionResult) result.get(

                            AmbientContextDetectionResult.RESULT_RESPONSE_BUNDLE_KEY);

            String packageName = detectionResult.getPackageName();

            PendingIntent pendingIntent = mMaster.getPendingIntent(mUserId, packageName);

            if (pendingIntent == null) {

                return;

            }



            final long token = Binder.clearCallingIdentity();

            try {

                for (PendingIntent pendingIntent : mExistingPendingIntents) {

                    // Send PendingIntent to requesting packages

                    String creatorPackage = pendingIntent.getCreatorPackage();

                    if (detectionResult.getPackageName().equals(creatorPackage)) {

                sendDetectionResultIntent(pendingIntent, detectionResult);

                Slog.i(TAG, "Got detection result of " + detectionResult.getEvents()

                                + " for " + creatorPackage);

                    }

                }

                        + " for " + packageName);

            } finally {

                Binder.restoreCallingIdentity(token);

            }

services/core/java/com/android/server/ambientcontext/AmbientContextManagerService.java

+122 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ import static android.provider.DeviceConfig.NAMESPACE_AMBIENT_CONTEXT_MANAGER_SE 


import android.Manifest;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.annotation.UserIdInt;

import android.app.PendingIntent;

import android.app.ambientcontext.AmbientContextEvent;
@@ -34,6 +35,7 @@ import android.os.ResultReceiver; 
import android.os.ShellCallback;

import android.os.UserHandle;

import android.provider.DeviceConfig;

import android.util.ArraySet;

import android.util.Slog;



import com.android.internal.R;
@@ -60,9 +62,50 @@ public class AmbientContextManagerService extends 


    /** Default value in absence of {@link DeviceConfig} override. */

    private static final boolean DEFAULT_SERVICE_ENABLED = true;

    public static final int MAX_TEMPORARY_SERVICE_DURATION_MS = 30000;



    static class ClientRequest {

        private final int mUserId;

        private final AmbientContextEventRequest mRequest;

        private final PendingIntent mPendingIntent;

        private final RemoteCallback mClientStatusCallback;



        ClientRequest(int userId, AmbientContextEventRequest request,

                PendingIntent pendingIntent, RemoteCallback clientStatusCallback) {

            this.mUserId = userId;

            this.mRequest = request;

            this.mPendingIntent = pendingIntent;

            this.mClientStatusCallback = clientStatusCallback;

        }



        String getPackageName() {

            return mPendingIntent.getCreatorPackage();

        }



        AmbientContextEventRequest getRequest() {

            return mRequest;

        }



        PendingIntent getPendingIntent() {

            return mPendingIntent;

        }



        RemoteCallback getClientStatusCallback() {

            return mClientStatusCallback;

        }



        boolean hasUserId(int userId) {

            return mUserId == userId;

        }



        boolean hasUserIdAndPackageName(int userId, String packageName) {

            return (userId == mUserId) && packageName.equals(getPackageName());

        }

    }



    private final Context mContext;

    boolean mIsServiceEnabled;

    private Set<ClientRequest> mExistingClientRequests;



    public AmbientContextManagerService(Context context) {

        super(context,
@@ -73,6 +116,7 @@ public class AmbientContextManagerService extends 
                PACKAGE_UPDATE_POLICY_REFRESH_EAGER

                        | /*To avoid high latency*/ PACKAGE_RESTART_POLICY_REFRESH_EAGER);

        mContext = context;

        mExistingClientRequests = new ArraySet<>();

    }



    @Override
@@ -94,6 +138,44 @@ public class AmbientContextManagerService extends 
        }

    }



    void newClientAdded(int userId, AmbientContextEventRequest request,

            PendingIntent pendingIntent, RemoteCallback clientStatusCallback) {

        Slog.d(TAG, "New client added: " + pendingIntent.getCreatorPackage());



        // Remove any existing ClientRequest for this user and package.

        mExistingClientRequests.removeAll(

                findExistingRequests(userId, pendingIntent.getCreatorPackage()));



        // Add to existing ClientRequests

        mExistingClientRequests.add(

                new ClientRequest(userId, request, pendingIntent, clientStatusCallback));

    }



    void clientRemoved(int userId, String packageName) {

        Slog.d(TAG, "Remove client: " + packageName);

        mExistingClientRequests.removeAll(findExistingRequests(userId, packageName));

    }



    private Set<ClientRequest> findExistingRequests(int userId, String packageName) {

        Set<ClientRequest> existingRequests = new ArraySet<>();

        for (ClientRequest clientRequest : mExistingClientRequests) {

            if (clientRequest.hasUserIdAndPackageName(userId, packageName)) {

                existingRequests.add(clientRequest);

            }

        }

        return existingRequests;

    }



    @Nullable

    PendingIntent getPendingIntent(int userId, String packageName) {

        for (ClientRequest clientRequest : mExistingClientRequests) {

            if (clientRequest.hasUserIdAndPackageName(userId, packageName)) {

                return clientRequest.getPendingIntent();

            }

        }

        return null;

    }



    private void onDeviceConfigChange(@NonNull Set<String> keys) {

        if (keys.contains(KEY_SERVICE_ENABLED)) {

            mIsServiceEnabled = DeviceConfig.getBoolean(
@@ -111,9 +193,33 @@ public class AmbientContextManagerService extends 
    @Override

    protected void onServiceRemoved(

            AmbientContextManagerPerUserService service, @UserIdInt int userId) {

        Slog.d(TAG, "onServiceRemoved");

        service.destroyLocked();

    }



    @Override

    protected void onServicePackageRestartedLocked(@UserIdInt int userId) {

        Slog.d(TAG, "Restoring remote request. Reason: Service package restarted.");

        restorePreviouslyEnabledClients(userId);

    }



    @Override

    protected void onServicePackageUpdatedLocked(@UserIdInt int userId) {

        Slog.d(TAG, "Restoring remote request. Reason: Service package updated.");

        restorePreviouslyEnabledClients(userId);

    }



    @Override

    protected void enforceCallingPermissionForManagement() {

        getContext().enforceCallingPermission(

                Manifest.permission.ACCESS_AMBIENT_CONTEXT_EVENT, TAG);

    }



    @Override

    protected int getMaximumTemporaryServiceDurationMs() {

        return MAX_TEMPORARY_SERVICE_DURATION_MS;

    }



    /** Returns {@code true} if the detection service is configured on this device. */

    public static boolean isDetectionServiceConfigured() {

        final PackageManagerInternal pmi = LocalServices.getService(PackageManagerInternal.class);
@@ -182,6 +288,22 @@ public class AmbientContextManagerService extends 
        }

    }



    private void restorePreviouslyEnabledClients(int userId) {

        synchronized (mLock) {

            final AmbientContextManagerPerUserService service = getServiceForUserLocked(userId);

            for (ClientRequest clientRequest : mExistingClientRequests) {

                // Start detection for previously enabled clients

                if (clientRequest.hasUserId(userId)) {

                    Slog.d(TAG, "Restoring detection for " + clientRequest.getPackageName());

                    service.startDetection(clientRequest.getRequest(),

                            clientRequest.getPackageName(),

                            service.createDetectionResultRemoteCallback(),

                            clientRequest.getClientStatusCallback());

                }

            }

        }

    }



    /**

     * Returns the AmbientContextManagerPerUserService component for this user.

     */