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Collect historical network stats.

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Periodically records delta network traffic into historical buckets to
support other services, such NetworkPolicyManager and Settings UI.

Introduces NetworkStatsHistory structure which contains sparse, uniform
buckets of data usage defined by timestamps.  Service periodically
polls NetworkStats and records changes into buckets.  It only persists
to disk when substantial changes have occured.  Current parameters
create 4 buckets each day, and persist for 90 days, resulting in about
8kB of data per network.

Only records stats for "well known" network interfaces that have been
claimed by Telephony or Wi-Fi subsystems.  Historical stats are also
keyed off identity (such as IMSI) to support SIM swapping.

Change-Id: Ia27d1289556a2bf9545fbc4f3b789425a01be53a
This commit is contained in:
Jeff Sharkey
2011-05-24 18:39:45 -07:00
parent 77c1cc0aa4
commit 7527990420
15 changed files with 1023 additions and 180 deletions
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40
services/java/com/android/server/SystemServer.java
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@ -49,6 +49,7 @@ import com.android.internal.os.SamplingProfilerIntegration;
import com.android.server.accessibility.AccessibilityManagerService;
import com.android.server.am.ActivityManagerService;
import com.android.server.net.NetworkPolicyManagerService;
import com.android.server.net.NetworkStatsService;
import com.android.server.pm.PackageManagerService;
import com.android.server.usb.UsbService;
import com.android.server.wm.WindowManagerService;
@ -116,7 +117,9 @@ class ServerThread extends Thread {
LightsService lights = null;
PowerManagerService power = null;
BatteryService battery = null;
AlarmManagerService alarm = null;
NetworkManagementService networkManagement = null;
NetworkStatsService networkStats = null;
NetworkPolicyManagerService networkPolicy = null;
ConnectivityService connectivity = null;
IPackageManager pm = null;
@ -188,7 +191,7 @@ class ServerThread extends Thread {
power.init(context, lights, ActivityManagerService.getDefault(), battery);
Slog.i(TAG, "Alarm Manager");
AlarmManagerService alarm = new AlarmManagerService(context);
alarm = new AlarmManagerService(context);
ServiceManager.addService(Context.ALARM_SERVICE, alarm);
Slog.i(TAG, "Init Watchdog");
@ -273,22 +276,6 @@ class ServerThread extends Thread {
Slog.e(TAG, "Failure starting Input Manager Service", e);
}
try {
Slog.i(TAG, "NetStat Service");
ServiceManager.addService("netstat", new NetStatService(context));
} catch (Throwable e) {
Slog.e(TAG, "Failure starting NetStat Service", e);
}
try {
Slog.i(TAG, "NetworkPolicy Service");
networkPolicy = new NetworkPolicyManagerService(
context, ActivityManagerService.self(), power);
ServiceManager.addService(Context.NETWORK_POLICY_SERVICE, networkPolicy);
} catch (Throwable e) {
Slog.e(TAG, "Failure starting Connectivity Service", e);
}
try {
Slog.i(TAG, "NetworkManagement Service");
networkManagement = NetworkManagementService.create(context);
@ -297,6 +284,23 @@ class ServerThread extends Thread {
Slog.e(TAG, "Failure starting NetworkManagement Service", e);
}
try {
Slog.i(TAG, "NetworkStats Service");
networkStats = new NetworkStatsService(context, networkManagement, alarm);
ServiceManager.addService(Context.NETWORK_STATS_SERVICE, networkStats);
} catch (Throwable e) {
Slog.e(TAG, "Failure starting NetworkStats Service", e);
}
try {
Slog.i(TAG, "NetworkPolicy Service");
networkPolicy = new NetworkPolicyManagerService(
context, ActivityManagerService.self(), power, networkStats);
ServiceManager.addService(Context.NETWORK_POLICY_SERVICE, networkPolicy);
} catch (Throwable e) {
Slog.e(TAG, "Failure starting NetworkPolicy Service", e);
}
try {
Slog.i(TAG, "Connectivity Service");
connectivity = new ConnectivityService(context, networkManagement, networkPolicy);
@ -535,6 +539,7 @@ class ServerThread extends Thread {
// These are needed to propagate to the runnable below.
final Context contextF = context;
final BatteryService batteryF = battery;
final NetworkStatsService networkStatsF = networkStats;
final NetworkPolicyManagerService networkPolicyF = networkPolicy;
final ConnectivityService connectivityF = connectivity;
final DockObserver dockF = dock;
@ -561,6 +566,7 @@ class ServerThread extends Thread {
startSystemUi(contextF);
if (batteryF != null) batteryF.systemReady();
if (networkStatsF != null) networkStatsF.systemReady();
if (networkPolicyF != null) networkPolicyF.systemReady();
if (connectivityF != null) connectivityF.systemReady();
if (dockF != null) dockF.systemReady();