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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server;
import android.content.Context;
import android.net.TrafficStats;
import android.util.Log;
import com.android.modules.utils.build.SdkLevel;
import com.android.server.net.NetworkStatsService;
/**
* NetworkStats service initializer for core networking. This is called by system server to create
* a new instance of NetworkStatsService.
*/
public final class NetworkStatsServiceInitializer extends SystemService {
private static final String TAG = NetworkStatsServiceInitializer.class.getSimpleName();
private final NetworkStatsService mStatsService;
public NetworkStatsServiceInitializer(Context context) {
super(context);
// Load JNI libraries used by NetworkStatsService and its dependencies
System.loadLibrary("service-connectivity");
mStatsService = maybeCreateNetworkStatsService(context);
}
@Override
public void onStart() {
if (mStatsService != null) {
Log.i(TAG, "Registering " + Context.NETWORK_STATS_SERVICE);
publishBinderService(Context.NETWORK_STATS_SERVICE, mStatsService,
/* allowIsolated= */ false);
TrafficStats.init(getContext());
}
}
@Override
public void onBootPhase(int phase) {
// This has to be run before StatsPullAtomService query usage at
// PHASE_THIRD_PARTY_APPS_CAN_START.
if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY && mStatsService != null) {
mStatsService.systemReady();
}
}
/**
* Return NetworkStatsService instance, or null if current SDK is lower than T.
*/
private NetworkStatsService maybeCreateNetworkStatsService(final Context context) {
if (!SdkLevel.isAtLeastT()) return null;
return NetworkStatsService.create(context);
}
}
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