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Commit 40133ebc authored by Jing Ji's avatar Jing Ji
Browse files

Add a device config to support config for bg restriction exemption 

So the exempted packages could be configured via device config update.

Bug: 203105544
Test: Manual - Update the device config and check the dumpsys.
Test: atest FrameworksMockingServicesTests:BackgroundRestrictionTest
Change-Id: I147e899e52f44da0bb98162970879b4ff9345020
parent 4838c7ca

services/core/java/com/android/server/am/AppRestrictionController.java

+44 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ import static android.os.PowerExemptionManager.REASON_ROLE_EMERGENCY; 
import static android.os.PowerExemptionManager.REASON_SYSTEM_ALLOW_LISTED;

import static android.os.PowerExemptionManager.REASON_SYSTEM_MODULE;

import static android.os.PowerExemptionManager.REASON_SYSTEM_UID;

import static android.os.PowerExemptionManager.reasonCodeToString;

import static android.os.Process.SYSTEM_UID;



import static com.android.internal.notification.SystemNotificationChannels.ABUSIVE_BACKGROUND_APPS;
@@ -157,6 +158,7 @@ import java.util.Collections; 
import java.util.Comparator;

import java.util.HashMap;

import java.util.List;

import java.util.Set;

import java.util.concurrent.CopyOnWriteArraySet;

import java.util.function.Consumer;
@@ -329,6 +331,8 @@ public final class AppRestrictionController { 
                        }

                    }

                }

                pw.print(" effectiveExemption=");

                pw.print(reasonCodeToString(getBackgroundRestrictionExemptionReason(mUid)));

            }



            String getPackageName() {
@@ -555,6 +559,12 @@ public final class AppRestrictionController { 
        static final String KEY_BG_PROMPT_FGS_WITH_NOTIFICATION_TO_BG_RESTRICTED =

                DEVICE_CONFIG_SUBNAMESPACE_PREFIX + "prompt_fgs_with_noti_to_bg_restricted";



        /**

         * The list of packages to be exempted from all these background restrictions.

         */

        static final String KEY_BG_RESTRICTION_EXEMPTED_PACKAGES =

                DEVICE_CONFIG_SUBNAMESPACE_PREFIX + "restriction_exempted_packages";



        static final boolean DEFAULT_BG_AUTO_RESTRICTED_BUCKET_ON_BG_RESTRICTION = false;

        static final long DEFAULT_BG_ABUSIVE_NOTIFICATION_MINIMAL_INTERVAL_MS = 24 * 60 * 60 * 1000;
@@ -569,6 +579,13 @@ public final class AppRestrictionController { 


        volatile long mBgNotificationMinIntervalMs;



        /**

         * @see #KEY_BG_RESTRICTION_EXEMPTED_PACKAGES.

         *

         *<p> Mutations on them would result in copy-on-write.</p>

         */

        volatile Set<String> mBgRestrictionExemptedPackages = Collections.emptySet();



        /**

         * @see #KEY_BG_PROMPT_FGS_WITH_NOTIFICATION_TO_BG_RESTRICTED.

         */
@@ -596,6 +613,9 @@ public final class AppRestrictionController { 
                    case KEY_BG_PROMPT_FGS_WITH_NOTIFICATION_TO_BG_RESTRICTED:

                        updateBgPromptFgsWithNotiToBgRestricted();

                        break;

                    case KEY_BG_RESTRICTION_EXEMPTED_PACKAGES:

                        updateBgRestrictionExemptedPackages();

                        break;

                }

                AppRestrictionController.this.onPropertiesChanged(name);

            }
@@ -628,6 +648,7 @@ public final class AppRestrictionController { 
            updateBgAutoRestrictedBucketChanged();

            updateBgAbusiveNotificationMinimalInterval();

            updateBgPromptFgsWithNotiToBgRestricted();

            updateBgRestrictionExemptedPackages();

        }



        private void updateBgAutoRestrictedBucketChanged() {
@@ -655,6 +676,23 @@ public final class AppRestrictionController { 
                    mDefaultBgPromptFgsWithNotiToBgRestricted);

        }



        private void updateBgRestrictionExemptedPackages() {

            final String settings = DeviceConfig.getString(

                    DeviceConfig.NAMESPACE_ACTIVITY_MANAGER,

                    KEY_BG_RESTRICTION_EXEMPTED_PACKAGES,

                    null);

            if (settings == null) {

                mBgRestrictionExemptedPackages = Collections.emptySet();

                return;

            }

            final String[] settingsList = settings.split(",");

            final ArraySet<String> packages = new ArraySet<>();

            for (String pkg : settingsList) {

                packages.add(pkg);

            }

            mBgRestrictionExemptedPackages = Collections.unmodifiableSet(packages);

        }



        void dump(PrintWriter pw, String prefix) {

            pw.print(prefix);

            pw.println("BACKGROUND RESTRICTION POLICY SETTINGS:");
@@ -672,6 +710,10 @@ public final class AppRestrictionController { 
            pw.print(KEY_BG_PROMPT_FGS_WITH_NOTIFICATION_TO_BG_RESTRICTED);

            pw.print('=');

            pw.println(mBgPromptFgsWithNotiToBgRestricted);

            pw.print(prefix);

            pw.print(KEY_BG_RESTRICTION_EXEMPTED_PACKAGES);

            pw.print('=');

            pw.println(mBgRestrictionExemptedPackages.toString());

        }

    }
@@ -1727,6 +1769,8 @@ public final class AppRestrictionController { 
                    return REASON_CARRIER_PRIVILEGED_APP;

                } else if (isExemptedFromSysConfig(pkg)) {

                    return REASON_SYSTEM_ALLOW_LISTED;

                } else if (mConstantsObserver.mBgRestrictionExemptedPackages.contains(pkg)) {

                    return REASON_ALLOWLISTED_PACKAGE;

                }

            }

        }