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Commit 6441a785 authored by Guojing Yuan's avatar Guojing Yuan
Browse files

[CDM][Refactoring 3/N] Consolidate association cache and disk 

1. Removed pending and revoked cache lists.
2. Refactored OnAssociationChanged callbacks.
3. Replaced previouslyUserIds map with maxId.

Bug: 327049496

Test: CTS
Change-Id: Ic6b7ff772e406663a0bb994519c08eb8edcc67e6
parent db89339f

core/java/android/companion/AssociationInfo.java

+8 −0
Original line number Diff line number Diff line
@@ -251,6 +251,14 @@ public final class AssociationInfo implements Parcelable { 
        return mPending;

    }



    /**

     * @return true if the association is not revoked nor pending

     * @hide

     */

    public boolean isActive() {

        return !mRevoked && !mPending;

    }



    /**

     * @return the last time self reported disconnected for selfManaged only.

     * @hide

services/companion/java/com/android/server/companion/BackupRestoreProcessor.java

+54 −67
Original line number Diff line number Diff line
@@ -18,7 +18,8 @@ package com.android.server.companion; 


import static android.os.UserHandle.getCallingUserId;



import static com.android.server.companion.CompanionDeviceManagerService.PerUserAssociationSet;

import static com.android.server.companion.association.AssociationDiskStore.readAssociationsFromPayload;

import static com.android.server.companion.utils.RolesUtils.addRoleHolderForAssociation;



import android.annotation.NonNull;

import android.annotation.SuppressLint;
@@ -26,62 +27,50 @@ import android.annotation.UserIdInt; 
import android.companion.AssociationInfo;

import android.companion.Flags;

import android.companion.datatransfer.SystemDataTransferRequest;

import android.content.Context;

import android.content.pm.ApplicationInfo;

import android.content.pm.PackageManagerInternal;

import android.util.ArraySet;

import android.util.Log;

import android.util.Slog;



import com.android.internal.annotations.GuardedBy;

import com.android.internal.util.CollectionUtils;

import com.android.server.companion.association.AssociationDiskStore;

import com.android.server.companion.association.AssociationRequestsProcessor;

import com.android.server.companion.association.AssociationStore;

import com.android.server.companion.association.Associations;

import com.android.server.companion.datatransfer.SystemDataTransferRequestStore;



import java.nio.ByteBuffer;

import java.util.HashMap;

import java.util.HashSet;

import java.util.List;

import java.util.Objects;

import java.util.Set;

import java.util.function.Predicate;



@SuppressLint("LongLogTag")

class BackupRestoreProcessor {

    static final String TAG = "CDM_BackupRestoreProcessor";

    private static final String TAG = "CDM_BackupRestoreProcessor";

    private static final int BACKUP_AND_RESTORE_VERSION = 0;



    private final Context mContext;

    @NonNull

    private final CompanionDeviceManagerService mService;

    @NonNull

    private final PackageManagerInternal mPackageManager;

    private final PackageManagerInternal mPackageManagerInternal;

    @NonNull

    private final AssociationStore mAssociationStore;

    @NonNull

    private final AssociationDiskStore mPersistentStore;

    private final AssociationDiskStore mAssociationDiskStore;

    @NonNull

    private final SystemDataTransferRequestStore mSystemDataTransferRequestStore;

    @NonNull

    private final AssociationRequestsProcessor mAssociationRequestsProcessor;



    /**

     * A structure that consists of a set of restored associations that are pending corresponding

     * companion app to be installed.

     */

    @GuardedBy("mAssociationsPendingAppInstall")

    private final PerUserAssociationSet mAssociationsPendingAppInstall =

            new PerUserAssociationSet();



    BackupRestoreProcessor(@NonNull CompanionDeviceManagerService service,

    BackupRestoreProcessor(@NonNull Context context,

                           @NonNull PackageManagerInternal packageManagerInternal,

                           @NonNull AssociationStore associationStore,

                           @NonNull AssociationDiskStore persistentStore,

                           @NonNull AssociationDiskStore associationDiskStore,

                           @NonNull SystemDataTransferRequestStore systemDataTransferRequestStore,

                           @NonNull AssociationRequestsProcessor associationRequestsProcessor) {

        mService = service;

        mPackageManager = service.mPackageManagerInternal;

        mContext = context;

        mPackageManagerInternal = packageManagerInternal;

        mAssociationStore = associationStore;

        mPersistentStore = persistentStore;

        mAssociationDiskStore = associationDiskStore;

        mSystemDataTransferRequestStore = systemDataTransferRequestStore;

        mAssociationRequestsProcessor = associationRequestsProcessor;

    }
@@ -93,9 +82,9 @@ class BackupRestoreProcessor { 
     * | (4) SystemDataTransferRequest length | SystemDataTransferRequest XML (without userId)|

     */

    byte[] getBackupPayload(int userId) {

        // Persist state first to generate an up-to-date XML file

        mService.persistStateForUser(userId);

        byte[] associationsPayload = mPersistentStore.getBackupPayload(userId);

        Slog.i(TAG, "getBackupPayload() userId=[" + userId + "].");



        byte[] associationsPayload = mAssociationDiskStore.getBackupPayload(userId);

        int associationsPayloadLength = associationsPayload.length;



        // System data transfer requests are persisted up-to-date already
@@ -119,6 +108,9 @@ class BackupRestoreProcessor { 
     * Create new associations and system data transfer request consents using backed up payload.

     */

    void applyRestoredPayload(byte[] payload, int userId) {

        Slog.i(TAG, "applyRestoredPayload() userId=[" + userId + "], payload size=["

                + payload.length + "].");



        ByteBuffer buffer = ByteBuffer.wrap(payload);



        // Make sure that payload version matches current version to ensure proper deserialization
@@ -131,9 +123,8 @@ class BackupRestoreProcessor { 
        // Read the bytes containing backed-up associations

        byte[] associationsPayload = new byte[buffer.getInt()];

        buffer.get(associationsPayload);

        final Set<AssociationInfo> restoredAssociations = new HashSet<>();

        mPersistentStore.readStateFromPayload(associationsPayload, userId,

                restoredAssociations, new HashMap<>());

        final Associations restoredAssociations = readAssociationsFromPayload(

                associationsPayload, userId);



        // Read the bytes containing backed-up system data transfer requests user consent

        byte[] requestsPayload = new byte[buffer.getInt()];
@@ -142,13 +133,13 @@ class BackupRestoreProcessor { 
                mSystemDataTransferRequestStore.readRequestsFromPayload(requestsPayload, userId);



        // Get a list of installed packages ahead of time.

        List<ApplicationInfo> installedApps = mPackageManager.getInstalledApplications(

        List<ApplicationInfo> installedApps = mPackageManagerInternal.getInstalledApplications(

                0, userId, getCallingUserId());



        // Restored device may have a different user ID than the backed-up user's user-ID. Since

        // association ID is dependent on the user ID, restored associations must account for

        // this potential difference on their association IDs.

        for (AssociationInfo restored : restoredAssociations) {

        for (AssociationInfo restored : restoredAssociations.getAssociations()) {

            // Don't restore a revoked association. Since they weren't added to the device being

            // restored in the first place, there is no need to worry about revoking a role that

            // was never granted either.
@@ -168,10 +159,9 @@ class BackupRestoreProcessor { 


            // Create a new association reassigned to this user and a valid association ID

            final String packageName = restored.getPackageName();

            final int newId = mService.getNewAssociationIdForPackage(userId, packageName);

            AssociationInfo newAssociation =

                    new AssociationInfo.Builder(newId, userId, packageName, restored)

                            .build();

            final int newId = mAssociationStore.getNextId(userId);

            AssociationInfo newAssociation = new AssociationInfo.Builder(newId, userId, packageName,

                    restored).build();



            // Check if the companion app for this association is already installed, then do one

            // of the following:
@@ -179,13 +169,15 @@ class BackupRestoreProcessor { 
            // the role attached to this association to the app.

            // (2) If the app isn't yet installed, then add this association to the list of pending

            // associations to be added when the package is installed in the future.

            boolean isPackageInstalled = installedApps.stream()

                    .anyMatch(app -> packageName.equals(app.packageName));

            boolean isPackageInstalled = installedApps.stream().anyMatch(

                    app -> packageName.equals(app.packageName));

            if (isPackageInstalled) {

                mAssociationRequestsProcessor.maybeGrantRoleAndStoreAssociation(newAssociation,

                        null, null);

            } else {

                addToPendingAppInstall(newAssociation);

                newAssociation = (new AssociationInfo.Builder(newAssociation)).setPending(true)

                        .build();

                mAssociationStore.addAssociation(newAssociation);

            }



            // Re-map restored system data transfer requests to newly created associations
@@ -195,32 +187,27 @@ class BackupRestoreProcessor { 
                mSystemDataTransferRequestStore.writeRequest(userId, newRequest);

            }

        }



        // Persist restored state.

        mService.persistStateForUser(userId);

    }



    void addToPendingAppInstall(@NonNull AssociationInfo association) {

        association = (new AssociationInfo.Builder(association))

                .setPending(true)

                .build();



        synchronized (mAssociationsPendingAppInstall) {

            mAssociationsPendingAppInstall.forUser(association.getUserId()).add(association);

        }

    }



    void removeFromPendingAppInstall(@NonNull AssociationInfo association) {

        synchronized (mAssociationsPendingAppInstall) {

            mAssociationsPendingAppInstall.forUser(association.getUserId()).remove(association);

    public void restorePendingAssociations(int userId, String packageName) {

        List<AssociationInfo> pendingAssociations = mAssociationStore.getPendingAssociations(userId,

                packageName);

        if (!pendingAssociations.isEmpty()) {

            Slog.i(TAG, "Found pending associations for package=[" + packageName

                    + "]. Restoring...");

        }

        for (AssociationInfo association : pendingAssociations) {

            AssociationInfo newAssociation = new AssociationInfo.Builder(association)

                    .setPending(false)

                    .build();

            addRoleHolderForAssociation(mContext, newAssociation, success -> {

                if (success) {

                    mAssociationStore.updateAssociation(newAssociation);

                    Slog.i(TAG, "Association=[" + association + "] is restored.");

                } else {

                    Slog.e(TAG, "Failed to restore association=[" + association + "].");

                }



    @NonNull

    Set<AssociationInfo> getAssociationsPendingAppInstallForUser(@UserIdInt int userId) {

        synchronized (mAssociationsPendingAppInstall) {

            // Return a copy.

            return new ArraySet<>(mAssociationsPendingAppInstall.forUser(userId));

            });

        }

    }
@@ -231,7 +218,7 @@ class BackupRestoreProcessor { 
    private boolean handleCollision(@UserIdInt int userId,

            AssociationInfo restored,

            List<SystemDataTransferRequest> restoredRequests) {

        List<AssociationInfo> localAssociations = mAssociationStore.getAssociationsForPackage(

        List<AssociationInfo> localAssociations = mAssociationStore.getActiveAssociationsByPackage(

                restored.getUserId(), restored.getPackageName());

        Predicate<AssociationInfo> isSameDevice = associationInfo -> {

            boolean matchesMacAddress = Objects.equals(
@@ -248,7 +235,7 @@ class BackupRestoreProcessor { 
            return false;

        }



        Log.d(TAG, "Conflict detected with association id=" + local.getId()

        Slog.d(TAG, "Conflict detected with association id=" + local.getId()

                + " while restoring CDM backup. Keeping local association.");



        List<SystemDataTransferRequest> localRequests = mSystemDataTransferRequestStore
@@ -266,8 +253,8 @@ class BackupRestoreProcessor { 
                continue;

            }



            Log.d(TAG, "Restoring " + restoredRequest.getClass().getSimpleName()

                    + " to an existing association id=" + local.getId() + ".");

            Slog.d(TAG, "Restoring " + restoredRequest.getClass().getSimpleName()

                    + " to an existing association id=[" + local.getId() + "].");



            SystemDataTransferRequest newRequest =

                    restoredRequest.copyWithNewId(local.getId());

services/companion/java/com/android/server/companion/CompanionApplicationController.java

+2 −2
Original line number Diff line number Diff line
@@ -397,7 +397,7 @@ public class CompanionApplicationController { 
        // First, disable hint mode for Auto profile and mark not BOUND for primary service ONLY.

        if (isPrimary) {

            final List<AssociationInfo> associations =

                    mAssociationStore.getAssociationsForPackage(userId, packageName);

                    mAssociationStore.getActiveAssociationsByPackage(userId, packageName);



            for (AssociationInfo association : associations) {

                final String deviceProfile = association.getDeviceProfile();
@@ -442,7 +442,7 @@ public class CompanionApplicationController { 
                mObservableUuidStore.getObservableUuidsForPackage(userId, packageName);



        for (AssociationInfo ai :

                mAssociationStore.getAssociationsForPackage(userId, packageName)) {

                mAssociationStore.getActiveAssociationsByPackage(userId, packageName)) {

            final int associationId = ai.getId();

            stillAssociated = true;

            if (ai.isSelfManaged()) {

services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java

+95 −385

File changed.

Preview size limit exceeded, changes collapsed.

services/companion/java/com/android/server/companion/CompanionDeviceShellCommand.java

+15 −16
Original line number Diff line number Diff line
@@ -33,8 +33,8 @@ import android.util.Base64; 
import android.util.proto.ProtoOutputStream;



import com.android.server.companion.association.AssociationRequestsProcessor;

import com.android.server.companion.association.AssociationRevokeProcessor;

import com.android.server.companion.association.AssociationStore;

import com.android.server.companion.association.DisassociationProcessor;

import com.android.server.companion.datatransfer.SystemDataTransferProcessor;

import com.android.server.companion.datatransfer.contextsync.BitmapUtils;

import com.android.server.companion.datatransfer.contextsync.CrossDeviceSyncController;
@@ -49,7 +49,7 @@ class CompanionDeviceShellCommand extends ShellCommand { 
    private static final String TAG = "CDM_CompanionDeviceShellCommand";



    private final CompanionDeviceManagerService mService;

    private final AssociationRevokeProcessor mRevokeProcessor;

    private final DisassociationProcessor mDisassociationProcessor;

    private final AssociationStore mAssociationStore;

    private final CompanionDevicePresenceMonitor mDevicePresenceMonitor;

    private final CompanionTransportManager mTransportManager;
@@ -65,7 +65,7 @@ class CompanionDeviceShellCommand extends ShellCommand { 
            SystemDataTransferProcessor systemDataTransferProcessor,

            AssociationRequestsProcessor associationRequestsProcessor,

            BackupRestoreProcessor backupRestoreProcessor,

            AssociationRevokeProcessor revokeProcessor) {

            DisassociationProcessor disassociationProcessor) {

        mService = service;

        mAssociationStore = associationStore;

        mDevicePresenceMonitor = devicePresenceMonitor;
@@ -73,7 +73,7 @@ class CompanionDeviceShellCommand extends ShellCommand { 
        mSystemDataTransferProcessor = systemDataTransferProcessor;

        mAssociationRequestsProcessor = associationRequestsProcessor;

        mBackupRestoreProcessor = backupRestoreProcessor;

        mRevokeProcessor = revokeProcessor;

        mDisassociationProcessor = disassociationProcessor;

    }



    @Override
@@ -105,12 +105,15 @@ class CompanionDeviceShellCommand extends ShellCommand { 
                case "list": {

                    final int userId = getNextIntArgRequired();

                    final List<AssociationInfo> associationsForUser =

                            mAssociationStore.getAssociationsForUser(userId);

                            mAssociationStore.getActiveAssociationsByUser(userId);

                    final int maxId = mAssociationStore.getMaxId(userId);

                    out.println("Max ID: " + maxId);

                    out.println("Association ID | Package Name | Mac Address");

                    for (AssociationInfo association : associationsForUser) {

                        // TODO(b/212535524): use AssociationInfo.toShortString(), once it's not

                        //  longer referenced in tests.

                        out.println(association.getPackageName() + " "

                                + association.getDeviceMacAddress() + " " + association.getId());

                        out.println(association.getId() + " | " + association.getPackageName()

                                + " | " + association.getDeviceMacAddress());

                    }

                }

                break;
@@ -132,28 +135,24 @@ class CompanionDeviceShellCommand extends ShellCommand { 
                    final String address = getNextArgRequired();

                    final AssociationInfo association =

                            mService.getAssociationWithCallerChecks(userId, packageName, address);

                    if (association != null) {

                        mRevokeProcessor.disassociateInternal(association.getId());

                    }

                    mDisassociationProcessor.disassociate(association.getId());

                }

                break;



                case "disassociate-all": {

                    final int userId = getNextIntArgRequired();

                    final String packageName = getNextArgRequired();

                    final List<AssociationInfo> userAssociations =

                            mAssociationStore.getAssociationsForPackage(userId, packageName);

                            mAssociationStore.getAssociationsByUser(userId);

                    for (AssociationInfo association : userAssociations) {

                        if (sanitizeWithCallerChecks(mService.getContext(), association) != null) {

                            mRevokeProcessor.disassociateInternal(association.getId());

                            mDisassociationProcessor.disassociate(association.getId());

                        }

                    }

                }

                break;



                case "clear-association-memory-cache":

                    mService.persistState();

                    mService.loadAssociationsFromDisk();

                case "refresh-cache":

                    mAssociationStore.refreshCache();

                    break;



                case "simulate-device-appeared":