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Commit 771287be authored by George Chan's avatar George Chan
Browse files

Implemented push API for a more performant method to fetch BIC apps. 

For more info: go/bic-v

Test: atest BackgroundInstallControlServiceHostTest BackgroundInstallControlServiceTest BackgroundInstallControlCallbackHelperTest
Bug: 323595069
Change-Id: I531c2d96ecc8fbc98e7092864c45ce9be8aff5de
parent 0505c363

core/java/android/content/pm/IBackgroundInstallControlService.aidl

+5 −0
Original line number Diff line number Diff line
@@ -17,10 +17,15 @@ 
package android.content.pm;



import android.content.pm.ParceledListSlice;

import android.os.IRemoteCallback;



/**

 * {@hide}

 */

interface IBackgroundInstallControlService {

    ParceledListSlice getBackgroundInstalledPackages(long flags, int userId);



    void registerBackgroundInstallCallback(IRemoteCallback callback);



    void unregisterBackgroundInstallCallback(IRemoteCallback callback);

}

services/core/java/com/android/server/pm/BackgroundInstallControlCallbackHelper.java

0 → 100644
+97 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2024 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 com.android.server.pm;



import static android.os.Process.THREAD_PRIORITY_BACKGROUND;



import android.annotation.NonNull;

import android.app.BackgroundInstallControlManager;

import android.os.Bundle;

import android.os.Handler;

import android.os.HandlerThread;

import android.os.IRemoteCallback;

import android.os.RemoteCallbackList;

import android.os.RemoteException;

import android.util.Slog;



import com.android.internal.annotations.VisibleForTesting;

import com.android.server.ServiceThread;



public class BackgroundInstallControlCallbackHelper {



    @VisibleForTesting static final String FLAGGED_PACKAGE_NAME_KEY = "packageName";

    @VisibleForTesting static final String FLAGGED_USER_ID_KEY = "userId";

    private static final String TAG = "BackgroundInstallControlCallbackHelper";



    private final Handler mHandler;



    BackgroundInstallControlCallbackHelper() {

        HandlerThread backgroundThread =

                new ServiceThread(

                        "BackgroundInstallControlCallbackHelperBg",

                        THREAD_PRIORITY_BACKGROUND,

                        true);

        backgroundThread.start();

        mHandler = new Handler(backgroundThread.getLooper());

    }



    @NonNull @VisibleForTesting

    final RemoteCallbackList<IRemoteCallback> mCallbacks = new RemoteCallbackList<>();



    /** Registers callback that gets invoked upon detection of an MBA

     *

     * NOTE: The callback is user context agnostic and currently broadcasts to all users of other

     * users app installs. This is fine because the API is for SystemServer use only.

     */

    public void registerBackgroundInstallCallback(IRemoteCallback callback) {

        synchronized (mCallbacks) {

            mCallbacks.register(callback, null);

        }

    }



    /** Unregisters callback */

    public void unregisterBackgroundInstallCallback(IRemoteCallback callback) {

        synchronized (mCallbacks) {

            mCallbacks.unregister(callback);

        }

    }



    /**

     * Invokes all registered callbacks Callbacks are processed through user provided-threads and

     * parameters are passed in via {@link BackgroundInstallControlManager} InstallEvent

     */

    public void notifyAllCallbacks(int userId, String packageName) {

        Bundle extras = new Bundle();

        extras.putCharSequence(FLAGGED_PACKAGE_NAME_KEY, packageName);

        extras.putInt(FLAGGED_USER_ID_KEY, userId);

        synchronized (mCallbacks) {

            mHandler.post(

                    () ->

                            mCallbacks.broadcast(

                                    callback -> {

                                        try {

                                            callback.sendResult(extras);

                                        } catch (RemoteException e) {

                                            Slog.e(

                                                    TAG,

                                                    "error detected: " + e.getLocalizedMessage(),

                                                    e);

                                        }

                                    }));

        }

    }

}

services/core/java/com/android/server/pm/BackgroundInstallControlService.java

+22 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ import android.os.Binder; 
import android.os.Build;

import android.os.Environment;

import android.os.Handler;

import android.os.IRemoteCallback;

import android.os.Looper;

import android.os.Message;

import android.os.SystemClock;
@@ -93,6 +94,8 @@ public class BackgroundInstallControlService extends SystemService { 
    private final File mDiskFile;

    private final Context mContext;



    private final BackgroundInstallControlCallbackHelper mCallbackHelper;



    private SparseSetArray<String> mBackgroundInstalledPackages = null;



    // User ID -> package name -> set of foreground time frame
@@ -112,6 +115,7 @@ public class BackgroundInstallControlService extends SystemService { 
        mHandler = new EventHandler(injector.getLooper(), this);

        mDiskFile = injector.getDiskFile();

        mContext = injector.getContext();

        mCallbackHelper = injector.getBackgroundInstallControlCallbackHelper();

        UsageStatsManagerInternal usageStatsManagerInternal =

                injector.getUsageStatsManagerInternal();

        usageStatsManagerInternal.registerListener(
@@ -150,6 +154,16 @@ public class BackgroundInstallControlService extends SystemService { 
            }

        }



        @Override

        public void registerBackgroundInstallCallback(IRemoteCallback callback) {

            mService.mCallbackHelper.registerBackgroundInstallCallback(callback);

        }



        @Override

        public void unregisterBackgroundInstallCallback(IRemoteCallback callback) {

            mService.mCallbackHelper.unregisterBackgroundInstallCallback(callback);

        }



    }



    @RequiresPermission(GET_BACKGROUND_INSTALLED_PACKAGES)
@@ -274,6 +288,7 @@ public class BackgroundInstallControlService extends SystemService { 


        initBackgroundInstalledPackages();

        mBackgroundInstalledPackages.add(userId, packageName);

        mCallbackHelper.notifyAllCallbacks(userId, packageName);

        writeBackgroundInstalledPackagesToDisk();

    }
@@ -568,6 +583,8 @@ public class BackgroundInstallControlService extends SystemService { 


        File getDiskFile();



        BackgroundInstallControlCallbackHelper getBackgroundInstallControlCallbackHelper();



    }



    private static final class InjectorImpl implements Injector {
@@ -617,5 +634,10 @@ public class BackgroundInstallControlService extends SystemService { 
            File file = new File(dir, DISK_FILE_NAME);

            return file;

        }



        @Override

        public BackgroundInstallControlCallbackHelper getBackgroundInstallControlCallbackHelper() {

            return new BackgroundInstallControlCallbackHelper();

        }

    }

}

services/tests/BackgroundInstallControlServiceTests/host/Android.bp

+1 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ java_test_host { 
        ":BackgroundInstallControlServiceTestApp",

        ":BackgroundInstallControlMockApp1",

        ":BackgroundInstallControlMockApp2",

        ":BackgroundInstallControlMockApp3",

    ],

    test_suites: [

        "general-tests",

services/tests/BackgroundInstallControlServiceTests/host/AndroidTest.xml

+3 −0
Original line number Diff line number Diff line
@@ -34,6 +34,9 @@ 
        <option name="push-file"

                key="BackgroundInstallControlMockApp2.apk"

                value="/data/local/tmp/BackgroundInstallControlMockApp2.apk" />

        <option name="push-file"

            key="BackgroundInstallControlMockApp3.apk"

            value="/data/local/tmp/BackgroundInstallControlMockApp3.apk" />

    </target_preparer>



    <test class="com.android.compatibility.common.tradefed.testtype.JarHostTest" >