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Commit d2f1260c authored by JW Wang's avatar JW Wang
Browse files

Implement AppStateHelper#hasActiveNetwork 

An app is said to be network active if it has sent
or received network data over the pas 10 minutes.

For now we monitor only WIFI and mobile network.
This should cover most cases of network usage.

Bug: 235306967
Test: atest CtsStagedInstallHostTestCases
Change-Id: Iac49bd83202932fc7a411cdc8a97e0a949c3f691
parent f8d1c26e

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

+36 −6
Original line number Diff line number Diff line
@@ -19,9 +19,13 @@ package com.android.server.pm; 
import android.app.ActivityManager;

import android.app.ActivityManager.RunningAppProcessInfo;

import android.app.ActivityManagerInternal;

import android.app.ActivityThread;

import android.app.usage.NetworkStats;

import android.app.usage.NetworkStatsManager;

import android.content.Context;

import android.media.AudioManager;

import android.media.IAudioService;

import android.net.ConnectivityManager;

import android.os.ServiceManager;

import android.os.SystemProperties;

import android.telecom.TelecomManager;
@@ -33,11 +37,15 @@ import com.android.server.LocalServices; 


import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.TimeUnit;



/**

 * A helper class to provide queries for app states concerning gentle-update.

 */

public class AppStateHelper {

    // The duration to monitor network usage to determine if network is active or not

    private static final long ACTIVE_NETWORK_DURATION_MILLIS = TimeUnit.MINUTES.toMillis(10);



    private final Context mContext;



    public AppStateHelper(Context context) {
@@ -127,12 +135,35 @@ public class AppStateHelper { 
        return hasAudioFocus(packageName) || isRecordingAudio(packageName);

    }



    private boolean hasActiveNetwork(List<String> packageNames, int networkType) {

        var pm = ActivityThread.getPackageManager();

        var nsm = mContext.getSystemService(NetworkStatsManager.class);

        var endTime = System.currentTimeMillis();

        var startTime = endTime - ACTIVE_NETWORK_DURATION_MILLIS;

        try (var stats = nsm.querySummary(networkType, null, startTime, endTime)) {

            var bucket = new NetworkStats.Bucket();

            while (stats.hasNextBucket()) {

                stats.getNextBucket(bucket);

                var packageName = pm.getNameForUid(bucket.getUid());

                if (!packageNames.contains(packageName)) {

                    continue;

                }

                if (bucket.getRxPackets() > 0 || bucket.getTxPackets() > 0) {

                    return true;

                }

            }

        } catch (Exception ignore) {

        }

        return false;

    }



    /**

     * True if the app is sending or receiving network data.

     * True if any app has sent or received network data over the past

     * {@link #ACTIVE_NETWORK_DURATION_MILLIS} milliseconds.

     */

    private boolean hasActiveNetwork(String packageName) {

        // To be implemented

        return false;

    private boolean hasActiveNetwork(List<String> packageNames) {

        return hasActiveNetwork(packageNames, ConnectivityManager.TYPE_WIFI)

                || hasActiveNetwork(packageNames, ConnectivityManager.TYPE_MOBILE);

    }



    /**
@@ -141,12 +172,11 @@ public class AppStateHelper { 
    public boolean hasInteractingApp(List<String> packageNames) {

        for (var packageName : packageNames) {

            if (hasActiveAudio(packageName)

                    || hasActiveNetwork(packageName)

                    || isAppTopVisible(packageName)) {

                return true;

            }

        }

        return false;

        return hasActiveNetwork(packageNames);

    }



    /**