Merge "Remove all static members from NetworkStatsFactory." (63f94f41) · Commits · e / os / android_frameworks_base

core/java/android/net/INetworkStatsService.aidl

+2 −1

Original line number	Diff line number	Diff line
		@@ -67,7 +67,8 @@ interface INetworkStatsService {
		void forceUpdateIfaces(
		in Network[] defaultNetworks,
		in NetworkState[] networkStates,
		in String activeIface);
		in String activeIface,
		in VpnInfo[] vpnInfos);
		/** Force update of statistics. */
		@UnsupportedAppUsage
		void forceUpdate();

services/core/java/com/android/server/ConnectivityService.java

+4 −9

Original line number	Diff line number	Diff line
		@@ -192,7 +192,6 @@ import com.android.server.net.BaseNetdEventCallback;
		import com.android.server.net.BaseNetworkObserver;
		import com.android.server.net.LockdownVpnTracker;
		import com.android.server.net.NetworkPolicyManagerInternal;
		import com.android.server.net.NetworkStatsFactory;
		import com.android.server.utils.PriorityDump;

		import com.google.android.collect.Lists;
		@@ -6800,8 +6799,8 @@ public class ConnectivityService extends IConnectivityManager.Stub
		}

		/**
		* Notify NetworkStatsService and NetworkStatsFactory that the set of active ifaces has changed,
		* or that one of the active iface's trackedproperties has changed.
		* Notify NetworkStatsService that the set of active ifaces has changed, or that one of the
		* active iface's tracked properties has changed.
		*/
		private void notifyIfacesChangedForNetworkStats() {
		ensureRunningOnConnectivityServiceThread();
		@@ -6811,16 +6810,12 @@ public class ConnectivityService extends IConnectivityManager.Stub
		activeIface = activeLinkProperties.getInterfaceName();
		}

		// CAUTION: Ordering matters between updateVpnInfos() and forceUpdateIfaces(), which
		// triggers a new poll. Trigger the poll first to ensure a snapshot is taken before
		// switching to the new state. This ensures that traffic does not get mis-attributed to
		// incorrect apps (including VPN app).
		final VpnInfo[] vpnInfos = getAllVpnInfo();
		try {
		mStatsService.forceUpdateIfaces(
		getDefaultNetworks(), getAllNetworkState(), activeIface);
		getDefaultNetworks(), getAllNetworkState(), activeIface, vpnInfos);
		} catch (Exception ignored) {
		}
		NetworkStatsFactory.updateVpnInfos(getAllVpnInfo());
		}

		@Override

services/core/java/com/android/server/net/NetworkStatsFactory.java

+20 −29

Original line number	Diff line number	Diff line
		@@ -78,17 +78,17 @@ public class NetworkStatsFactory {
		* <p>In order to prevent deadlocks, critical sections protected by this lock SHALL NOT call out
		* to other code that will acquire other locks within the system server. See b/134244752.
		*/
		private static final Object sPersistentDataLock = new Object();
		private final Object mPersistentDataLock = new Object();

		/** Set containing info about active VPNs and their underlying networks. */
		private static volatile VpnInfo[] sVpnInfos = new VpnInfo[0];
		private volatile VpnInfo[] mVpnInfos = new VpnInfo[0];

		// A persistent snapshot of cumulative stats since device start
		@GuardedBy("sPersistentDataLock")
		@GuardedBy("mPersistentDataLock")
		private NetworkStats mPersistSnapshot;

		// The persistent snapshot of tun and 464xlat adjusted stats since device start
		@GuardedBy("sPersistentDataLock")
		@GuardedBy("mPersistentDataLock")
		private NetworkStats mTunAnd464xlatAdjustedStats;

		/**
		@@ -97,12 +97,13 @@ public class NetworkStatsFactory {
		* Because counters must never roll backwards, once a given interface is stacked on top of an
		* underlying interface, the stacked interface can never be stacked on top of
		* another interface. */
		private static final ConcurrentHashMap<String, String> sStackedIfaces
		private final ConcurrentHashMap<String, String> mStackedIfaces
		= new ConcurrentHashMap<>();

		public static void noteStackedIface(String stackedIface, String baseIface) {
		/** Informs the factory of a new stacked interface. */
		public void noteStackedIface(String stackedIface, String baseIface) {
		if (stackedIface != null && baseIface != null) {
		sStackedIfaces.put(stackedIface, baseIface);
		mStackedIfaces.put(stackedIface, baseIface);
		}
		}

		@@ -115,13 +116,8 @@ public class NetworkStatsFactory {
		*
		* @param vpnArray The snapshot of the currently-running VPNs.
		*/
		public static void updateVpnInfos(VpnInfo[] vpnArray) {
		sVpnInfos = vpnArray.clone();
		}

		@VisibleForTesting
		public static VpnInfo[] getVpnInfos() {
		return sVpnInfos.clone();
		public void updateVpnInfos(VpnInfo[] vpnArray) {
		mVpnInfos = vpnArray.clone();
		}

		/**
		@@ -132,7 +128,7 @@ public class NetworkStatsFactory {
		* {@link #noteStackedIface(String, String)}, but only interfaces noted before this method
		* is called are guaranteed to be included.
		*/
		public static String[] augmentWithStackedInterfaces(@Nullable String[] requiredIfaces) {
		public String[] augmentWithStackedInterfaces(@Nullable String[] requiredIfaces) {
		if (requiredIfaces == NetworkStats.INTERFACES_ALL) {
		return null;
		}
		@@ -142,7 +138,7 @@ public class NetworkStatsFactory {
		// elements as they existed upon construction exactly once, and may
		// (but are not guaranteed to) reflect any modifications subsequent to construction".
		// This is enough here.
		for (Map.Entry<String, String> entry : sStackedIfaces.entrySet()) {
		for (Map.Entry<String, String> entry : mStackedIfaces.entrySet()) {
		if (relatedIfaces.contains(entry.getKey())) {
		relatedIfaces.add(entry.getValue());
		} else if (relatedIfaces.contains(entry.getValue())) {
		@@ -158,17 +154,12 @@ public class NetworkStatsFactory {
		* Applies 464xlat adjustments with ifaces noted with {@link #noteStackedIface(String, String)}.
		* @see NetworkStats#apply464xlatAdjustments(NetworkStats, NetworkStats, Map, boolean)
		*/
		public static void apply464xlatAdjustments(NetworkStats baseTraffic,
		public void apply464xlatAdjustments(NetworkStats baseTraffic,
		NetworkStats stackedTraffic, boolean useBpfStats) {
		NetworkStats.apply464xlatAdjustments(baseTraffic, stackedTraffic, sStackedIfaces,
		NetworkStats.apply464xlatAdjustments(baseTraffic, stackedTraffic, mStackedIfaces,
		useBpfStats);
		}

		@VisibleForTesting
		public static void clearStackedIfaces() {
		sStackedIfaces.clear();
		}

		public NetworkStatsFactory() {
		this(new File("/proc/"), new File("/sys/fs/bpf/map_netd_app_uid_stats_map").exists());
		}
		@@ -179,7 +170,7 @@ public class NetworkStatsFactory {
		mStatsXtIfaceFmt = new File(procRoot, "net/xt_qtaguid/iface_stat_fmt");
		mStatsXtUid = new File(procRoot, "net/xt_qtaguid/stats");
		mUseBpfStats = useBpfStats;
		synchronized (sPersistentDataLock) {
		synchronized (mPersistentDataLock) {
		mPersistSnapshot = new NetworkStats(SystemClock.elapsedRealtime(), -1);
		mTunAnd464xlatAdjustedStats = new NetworkStats(SystemClock.elapsedRealtime(), -1);
		}
		@@ -304,7 +295,7 @@ public class NetworkStatsFactory {
		return readNetworkStatsDetail(UID_ALL, INTERFACES_ALL, TAG_ALL);
		}

		@GuardedBy("sPersistentDataLock")
		@GuardedBy("mPersistentDataLock")
		private void requestSwapActiveStatsMapLocked() throws RemoteException {
		// Ask netd to do a active map stats swap. When the binder call successfully returns,
		// the system server should be able to safely read and clean the inactive map
		@@ -328,9 +319,9 @@ public class NetworkStatsFactory {
		int limitUid, String[] limitIfaces, int limitTag) throws IOException {
		// In order to prevent deadlocks, anything protected by this lock MUST NOT call out to other
		// code that will acquire other locks within the system server. See b/134244752.
		synchronized (sPersistentDataLock) {
		synchronized (mPersistentDataLock) {
		// Take a reference. If this gets swapped out, we still have the old reference.
		final VpnInfo[] vpnArray = sVpnInfos;
		final VpnInfo[] vpnArray = mVpnInfos;
		// Take a defensive copy. mPersistSnapshot is mutated in some cases below
		final NetworkStats prev = mPersistSnapshot.clone();

		@@ -379,7 +370,7 @@ public class NetworkStatsFactory {
		}
		}

		@GuardedBy("sPersistentDataLock")
		@GuardedBy("mPersistentDataLock")
		private NetworkStats adjustForTunAnd464Xlat(
		NetworkStats uidDetailStats, NetworkStats previousStats, VpnInfo[] vpnArray) {
		// Calculate delta from last snapshot
		@@ -389,7 +380,7 @@ public class NetworkStatsFactory {
		// network, the overhead is their fault.
		// No locking here: apply464xlatAdjustments behaves fine with an add-only
		// ConcurrentHashMap.
		delta.apply464xlatAdjustments(sStackedIfaces, mUseBpfStats);
		delta.apply464xlatAdjustments(mStackedIfaces, mUseBpfStats);

		// Migrate data usage over a VPN to the TUN network.
		for (VpnInfo info : vpnArray) {

services/core/java/com/android/server/net/NetworkStatsService.java

+11 −4

Original line number	Diff line number	Diff line
		@@ -130,6 +130,7 @@ import android.util.proto.ProtoOutputStream;

		import com.android.internal.annotations.GuardedBy;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.net.VpnInfo;
		import com.android.internal.util.ArrayUtils;
		import com.android.internal.util.DumpUtils;
		import com.android.internal.util.FileRotator;
		@@ -777,7 +778,7 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
		public NetworkStats getDetailedUidStats(String[] requiredIfaces) {
		try {
		final String[] ifacesToQuery =
		NetworkStatsFactory.augmentWithStackedInterfaces(requiredIfaces);
		mStatsFactory.augmentWithStackedInterfaces(requiredIfaces);
		return getNetworkStatsUidDetail(ifacesToQuery);
		} catch (RemoteException e) {
		Log.wtf(TAG, "Error compiling UID stats", e);
		@@ -829,7 +830,8 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
		public void forceUpdateIfaces(
		Network[] defaultNetworks,
		NetworkState[] networkStates,
		String activeIface) {
		String activeIface,
		VpnInfo[] vpnInfos) {
		checkNetworkStackPermission(mContext);

		final long token = Binder.clearCallingIdentity();
		@@ -838,6 +840,11 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
		} finally {
		Binder.restoreCallingIdentity(token);
		}

		// Update the VPN underlying interfaces only after the poll is made and tun data has been
		// migrated. Otherwise the migration would use the new interfaces instead of the ones that
		// were current when the polled data was transferred.
		mStatsFactory.updateVpnInfos(vpnInfos);
		}

		@Override
		@@ -1649,7 +1656,7 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
		// fold tethering stats and operations into uid snapshot
		final NetworkStats tetherSnapshot = getNetworkStatsTethering(STATS_PER_UID);
		tetherSnapshot.filter(UID_ALL, ifaces, TAG_ALL);
		NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, tetherSnapshot,
		mStatsFactory.apply464xlatAdjustments(uidSnapshot, tetherSnapshot,
		mUseBpfTrafficStats);
		uidSnapshot.combineAllValues(tetherSnapshot);

		@@ -1660,7 +1667,7 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
		final NetworkStats vtStats = telephonyManager.getVtDataUsage(STATS_PER_UID);
		if (vtStats != null) {
		vtStats.filter(UID_ALL, ifaces, TAG_ALL);
		NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, vtStats,
		mStatsFactory.apply464xlatAdjustments(uidSnapshot, vtStats,
		mUseBpfTrafficStats);
		uidSnapshot.combineAllValues(vtStats);
		}

tests/net/java/com/android/server/ConnectivityServiceTest.java

+14 −36

Original line number	Diff line number	Diff line
		@@ -205,7 +205,6 @@ import com.android.server.connectivity.Tethering;
		import com.android.server.connectivity.Vpn;
		import com.android.server.net.NetworkPinner;
		import com.android.server.net.NetworkPolicyManagerInternal;
		import com.android.server.net.NetworkStatsFactory;
		import com.android.testutils.HandlerUtilsKt;
		import com.android.testutils.ThrowingConsumer;

		@@ -4882,11 +4881,8 @@ public class ConnectivityServiceTest {
		mCellNetworkAgent.sendLinkProperties(cellLp);
		waitForIdle();
		verify(mStatsService, atLeastOnce())
		.forceUpdateIfaces(
		eq(onlyCell),
		any(NetworkState[].class),
		eq(MOBILE_IFNAME));
		assertEquals(new VpnInfo[0], NetworkStatsFactory.getVpnInfos());
		.forceUpdateIfaces(eq(onlyCell), any(NetworkState[].class), eq(MOBILE_IFNAME),
		eq(new VpnInfo[0]));
		reset(mStatsService);

		// Default network switch should update ifaces.
		@@ -4895,65 +4891,47 @@ public class ConnectivityServiceTest {
		waitForIdle();
		assertEquals(wifiLp, mService.getActiveLinkProperties());
		verify(mStatsService, atLeastOnce())
		.forceUpdateIfaces(
		eq(onlyWifi),
		any(NetworkState[].class),
		eq(WIFI_IFNAME));
		assertEquals(new VpnInfo[0], NetworkStatsFactory.getVpnInfos());
		.forceUpdateIfaces(eq(onlyWifi), any(NetworkState[].class), eq(WIFI_IFNAME),
		eq(new VpnInfo[0]));
		reset(mStatsService);

		// Disconnect should update ifaces.
		mWiFiNetworkAgent.disconnect();
		waitForIdle();
		verify(mStatsService, atLeastOnce())
		.forceUpdateIfaces(
		eq(onlyCell),
		any(NetworkState[].class),
		eq(MOBILE_IFNAME));
		assertEquals(new VpnInfo[0], NetworkStatsFactory.getVpnInfos());
		.forceUpdateIfaces(eq(onlyCell), any(NetworkState[].class),
		eq(MOBILE_IFNAME), eq(new VpnInfo[0]));
		reset(mStatsService);

		// Metered change should update ifaces
		mCellNetworkAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
		waitForIdle();
		verify(mStatsService, atLeastOnce())
		.forceUpdateIfaces(
		eq(onlyCell),
		any(NetworkState[].class),
		eq(MOBILE_IFNAME));
		assertEquals(new VpnInfo[0], NetworkStatsFactory.getVpnInfos());
		.forceUpdateIfaces(eq(onlyCell), any(NetworkState[].class), eq(MOBILE_IFNAME),
		eq(new VpnInfo[0]));
		reset(mStatsService);

		mCellNetworkAgent.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
		waitForIdle();
		verify(mStatsService, atLeastOnce())
		.forceUpdateIfaces(
		eq(onlyCell),
		any(NetworkState[].class),
		eq(MOBILE_IFNAME));
		assertEquals(new VpnInfo[0], NetworkStatsFactory.getVpnInfos());
		.forceUpdateIfaces(eq(onlyCell), any(NetworkState[].class), eq(MOBILE_IFNAME),
		eq(new VpnInfo[0]));
		reset(mStatsService);

		// Captive portal change shouldn't update ifaces
		mCellNetworkAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL);
		waitForIdle();
		verify(mStatsService, never())
		.forceUpdateIfaces(
		eq(onlyCell),
		any(NetworkState[].class),
		eq(MOBILE_IFNAME));
		assertEquals(new VpnInfo[0], NetworkStatsFactory.getVpnInfos());
		.forceUpdateIfaces(eq(onlyCell), any(NetworkState[].class), eq(MOBILE_IFNAME),
		eq(new VpnInfo[0]));
		reset(mStatsService);

		// Roaming change should update ifaces
		mCellNetworkAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING);
		waitForIdle();
		verify(mStatsService, atLeastOnce())
		.forceUpdateIfaces(
		eq(onlyCell),
		any(NetworkState[].class),
		eq(MOBILE_IFNAME));
		assertEquals(new VpnInfo[0], NetworkStatsFactory.getVpnInfos());
		.forceUpdateIfaces(eq(onlyCell), any(NetworkState[].class), eq(MOBILE_IFNAME),
		eq(new VpnInfo[0]));
		reset(mStatsService);
		}