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Commit 2c890461 authored by Kweku Adams's avatar Kweku Adams
Browse files

Add API to get max action duration. 

Add an API that allows TARE clients to find out the maximum length of
time an app can pay for a specific ongoing bill.

Bug: 158300259
Test: Android builds
Change-Id: Ie6095628b644060b393447762c02c2614ac23aff
parent f8dd1735

apex/jobscheduler/service/java/com/android/server/tare/EconomyManagerInternal.java

+5 −0
Original line number Diff line number Diff line
@@ -124,6 +124,11 @@ public interface EconomyManagerInternal { 
     */

    boolean canPayFor(int userId, @NonNull String pkgName, @NonNull ActionBill bill);



    /**

     * Returns the maximum duration (in milliseconds) that the specified app can afford the bill,

     * based on current prices.

     */

    long getMaxDurationMs(int userId, @NonNull String pkgName, @NonNull ActionBill bill);



    /**

     * Register an {@link AffordabilityChangeListener} to track when an app's ability to afford the

apex/jobscheduler/service/java/com/android/server/tare/InternalResourceService.java

+35 −1
Original line number Diff line number Diff line
@@ -104,7 +104,6 @@ public class InternalResourceService extends SystemService { 
    @GuardedBy("mLock")

    private long mLastUnusedReclamationTime;



    @SuppressWarnings("FieldCanBeLocal")

    private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {

        @Nullable

        private String getPackageName(Intent intent) {
@@ -514,6 +513,15 @@ public class InternalResourceService extends SystemService { 
    }



    private final class LocalService implements EconomyManagerInternal {

        /**

         * Use an extremely large value to indicate that an app can pay for a bill indefinitely.

         * The value set here should be large/long enough that there's no reasonable expectation

         * of a device operating uninterrupted (or in the exact same state) for that period of time.

         * We intentionally don't use Long.MAX_VALUE to avoid potential overflow if a client

         * doesn't check the value and just immediately adds it to the current time.

         */

        private static final long FOREVER_MS = 27 * 365 * 24 * HOUR_IN_MILLIS;



        @Override

        public void registerAffordabilityChangeListener(int userId, @NonNull String pkgName,

                @NonNull AffordabilityChangeListener listener, @NonNull ActionBill bill) {
@@ -551,6 +559,29 @@ public class InternalResourceService extends SystemService { 
            }

        }



        @Override

        public long getMaxDurationMs(int userId, @NonNull String pkgName,

                @NonNull ActionBill bill) {

            if (!mIsEnabled) {

                return FOREVER_MS;

            }

            long totalCostPerSecond = 0;

            final List<EconomyManagerInternal.AnticipatedAction> projectedActions =

                    bill.getAnticipatedActions();

            for (int i = 0; i < projectedActions.size(); ++i) {

                AnticipatedAction action = projectedActions.get(i);

                final long cost =

                        mCompleteEconomicPolicy.getCostOfAction(action.actionId, userId, pkgName);

                totalCostPerSecond += cost;

            }

            if (totalCostPerSecond == 0) {

                return FOREVER_MS;

            }

            synchronized (mLock) {

                return mAgent.getBalanceLocked(userId, pkgName) * 1000 / totalCostPerSecond;

            }

        }



        @Override

        public void noteInstantaneousEvent(int userId, @NonNull String pkgName, int eventId,

                @Nullable String tag) {
@@ -630,6 +661,9 @@ public class InternalResourceService extends SystemService { 


    private void dumpInternal(final IndentingPrintWriter pw) {

        synchronized (mLock) {

            pw.print("Is enabled: ");

            pw.println(mIsEnabled);



            pw.print("Current battery level: ");

            pw.println(mCurrentBatteryLevel);