| /** |
| * Copyright (C) 2015 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 android.app.usage; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.RequiresPermission; |
| import android.annotation.SystemApi; |
| import android.annotation.SystemService; |
| import android.annotation.TestApi; |
| import android.app.usage.NetworkStats.Bucket; |
| import android.compat.annotation.UnsupportedAppUsage; |
| import android.content.Context; |
| import android.net.ConnectivityManager; |
| import android.net.DataUsageRequest; |
| import android.net.INetworkStatsService; |
| import android.net.NetworkIdentity; |
| import android.net.NetworkStack; |
| import android.net.NetworkTemplate; |
| import android.net.netstats.provider.INetworkStatsProviderCallback; |
| import android.net.netstats.provider.NetworkStatsProvider; |
| import android.os.Binder; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Messenger; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.ServiceManager.ServiceNotFoundException; |
| import android.util.DataUnit; |
| import android.util.Log; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.util.Objects; |
| |
| /** |
| * Provides access to network usage history and statistics. Usage data is collected in |
| * discrete bins of time called 'Buckets'. See {@link NetworkStats.Bucket} for details. |
| * <p /> |
| * Queries can define a time interval in the form of start and end timestamps (Long.MIN_VALUE and |
| * Long.MAX_VALUE can be used to simulate open ended intervals). By default, apps can only obtain |
| * data about themselves. See the below note for special cases in which apps can obtain data about |
| * other applications. |
| * <h3> |
| * Summary queries |
| * </h3> |
| * {@link #querySummaryForDevice} <p /> |
| * {@link #querySummaryForUser} <p /> |
| * {@link #querySummary} <p /> |
| * These queries aggregate network usage across the whole interval. Therefore there will be only one |
| * bucket for a particular key, state, metered and roaming combination. In case of the user-wide |
| * and device-wide summaries a single bucket containing the totalised network usage is returned. |
| * <h3> |
| * History queries |
| * </h3> |
| * {@link #queryDetailsForUid} <p /> |
| * {@link #queryDetails} <p /> |
| * These queries do not aggregate over time but do aggregate over state, metered and roaming. |
| * Therefore there can be multiple buckets for a particular key. However, all Buckets will have |
| * {@code state} {@link NetworkStats.Bucket#STATE_ALL}, |
| * {@code defaultNetwork} {@link NetworkStats.Bucket#DEFAULT_NETWORK_ALL}, |
| * {@code metered } {@link NetworkStats.Bucket#METERED_ALL}, |
| * {@code roaming} {@link NetworkStats.Bucket#ROAMING_ALL}. |
| * <p /> |
| * <b>NOTE:</b> Calling {@link #querySummaryForDevice} or accessing stats for apps other than the |
| * calling app requires the permission {@link android.Manifest.permission#PACKAGE_USAGE_STATS}, |
| * which is a system-level permission and will not be granted to third-party apps. However, |
| * declaring the permission implies intention to use the API and the user of the device can grant |
| * permission through the Settings application. |
| * <p /> |
| * Profile owner apps are automatically granted permission to query data on the profile they manage |
| * (that is, for any query except {@link #querySummaryForDevice}). Device owner apps and carrier- |
| * privileged apps likewise get access to usage data for all users on the device. |
| * <p /> |
| * In addition to tethering usage, usage by removed users and apps, and usage by the system |
| * is also included in the results for callers with one of these higher levels of access. |
| * <p /> |
| * <b>NOTE:</b> Prior to API level {@value android.os.Build.VERSION_CODES#N}, all calls to these APIs required |
| * the above permission, even to access an app's own data usage, and carrier-privileged apps were |
| * not included. |
| */ |
| @SystemService(Context.NETWORK_STATS_SERVICE) |
| public class NetworkStatsManager { |
| private static final String TAG = "NetworkStatsManager"; |
| private static final boolean DBG = false; |
| |
| /** @hide */ |
| public static final int CALLBACK_LIMIT_REACHED = 0; |
| /** @hide */ |
| public static final int CALLBACK_RELEASED = 1; |
| |
| /** |
| * Minimum data usage threshold for registering usage callbacks. |
| * |
| * Requests registered with a threshold lower than this will only be triggered once this minimum |
| * is reached. |
| * @hide |
| */ |
| public static final long MIN_THRESHOLD_BYTES = DataUnit.MEBIBYTES.toBytes(2); |
| |
| private final Context mContext; |
| private final INetworkStatsService mService; |
| |
| /** @hide */ |
| public static final int FLAG_POLL_ON_OPEN = 1 << 0; |
| /** @hide */ |
| public static final int FLAG_POLL_FORCE = 1 << 1; |
| /** @hide */ |
| public static final int FLAG_AUGMENT_WITH_SUBSCRIPTION_PLAN = 1 << 2; |
| |
| private int mFlags; |
| |
| /** |
| * {@hide} |
| */ |
| @UnsupportedAppUsage |
| public NetworkStatsManager(Context context) throws ServiceNotFoundException { |
| this(context, INetworkStatsService.Stub.asInterface( |
| ServiceManager.getServiceOrThrow(Context.NETWORK_STATS_SERVICE))); |
| } |
| |
| /** @hide */ |
| @VisibleForTesting |
| public NetworkStatsManager(Context context, INetworkStatsService service) { |
| mContext = context; |
| mService = service; |
| setPollOnOpen(true); |
| } |
| |
| /** @hide */ |
| public void setPollOnOpen(boolean pollOnOpen) { |
| if (pollOnOpen) { |
| mFlags |= FLAG_POLL_ON_OPEN; |
| } else { |
| mFlags &= ~FLAG_POLL_ON_OPEN; |
| } |
| } |
| |
| /** @hide */ |
| @UnsupportedAppUsage |
| @TestApi |
| public void setPollForce(boolean pollForce) { |
| if (pollForce) { |
| mFlags |= FLAG_POLL_FORCE; |
| } else { |
| mFlags &= ~FLAG_POLL_FORCE; |
| } |
| } |
| |
| /** @hide */ |
| public void setAugmentWithSubscriptionPlan(boolean augmentWithSubscriptionPlan) { |
| if (augmentWithSubscriptionPlan) { |
| mFlags |= FLAG_AUGMENT_WITH_SUBSCRIPTION_PLAN; |
| } else { |
| mFlags &= ~FLAG_AUGMENT_WITH_SUBSCRIPTION_PLAN; |
| } |
| } |
| |
| /** @hide */ |
| public Bucket querySummaryForDevice(NetworkTemplate template, |
| long startTime, long endTime) throws SecurityException, RemoteException { |
| Bucket bucket = null; |
| NetworkStats stats = new NetworkStats(mContext, template, mFlags, startTime, endTime, |
| mService); |
| bucket = stats.getDeviceSummaryForNetwork(); |
| |
| stats.close(); |
| return bucket; |
| } |
| |
| /** |
| * Query network usage statistics summaries. Result is summarised data usage for the whole |
| * device. Result is a single Bucket aggregated over time, state, uid, tag, metered, and |
| * roaming. This means the bucket's start and end timestamp are going to be the same as the |
| * 'startTime' and 'endTime' parameters. State is going to be |
| * {@link NetworkStats.Bucket#STATE_ALL}, uid {@link NetworkStats.Bucket#UID_ALL}, |
| * tag {@link NetworkStats.Bucket#TAG_NONE}, |
| * default network {@link NetworkStats.Bucket#DEFAULT_NETWORK_ALL}, |
| * metered {@link NetworkStats.Bucket#METERED_ALL}, |
| * and roaming {@link NetworkStats.Bucket#ROAMING_ALL}. |
| * |
| * @param networkType As defined in {@link ConnectivityManager}, e.g. |
| * {@link ConnectivityManager#TYPE_MOBILE}, {@link ConnectivityManager#TYPE_WIFI} |
| * etc. |
| * @param subscriberId If applicable, the subscriber id of the network interface. |
| * @param startTime Start of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @param endTime End of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @return Bucket object or null if permissions are insufficient or error happened during |
| * statistics collection. |
| */ |
| public Bucket querySummaryForDevice(int networkType, String subscriberId, |
| long startTime, long endTime) throws SecurityException, RemoteException { |
| NetworkTemplate template; |
| try { |
| template = createTemplate(networkType, subscriberId); |
| } catch (IllegalArgumentException e) { |
| if (DBG) Log.e(TAG, "Cannot create template", e); |
| return null; |
| } |
| |
| return querySummaryForDevice(template, startTime, endTime); |
| } |
| |
| /** |
| * Query network usage statistics summaries. Result is summarised data usage for all uids |
| * belonging to calling user. Result is a single Bucket aggregated over time, state and uid. |
| * This means the bucket's start and end timestamp are going to be the same as the 'startTime' |
| * and 'endTime' parameters. State is going to be {@link NetworkStats.Bucket#STATE_ALL}, |
| * uid {@link NetworkStats.Bucket#UID_ALL}, tag {@link NetworkStats.Bucket#TAG_NONE}, |
| * metered {@link NetworkStats.Bucket#METERED_ALL}, and roaming |
| * {@link NetworkStats.Bucket#ROAMING_ALL}. |
| * |
| * @param networkType As defined in {@link ConnectivityManager}, e.g. |
| * {@link ConnectivityManager#TYPE_MOBILE}, {@link ConnectivityManager#TYPE_WIFI} |
| * etc. |
| * @param subscriberId If applicable, the subscriber id of the network interface. |
| * @param startTime Start of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @param endTime End of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @return Bucket object or null if permissions are insufficient or error happened during |
| * statistics collection. |
| */ |
| public Bucket querySummaryForUser(int networkType, String subscriberId, long startTime, |
| long endTime) throws SecurityException, RemoteException { |
| NetworkTemplate template; |
| try { |
| template = createTemplate(networkType, subscriberId); |
| } catch (IllegalArgumentException e) { |
| if (DBG) Log.e(TAG, "Cannot create template", e); |
| return null; |
| } |
| |
| NetworkStats stats; |
| stats = new NetworkStats(mContext, template, mFlags, startTime, endTime, mService); |
| stats.startSummaryEnumeration(); |
| |
| stats.close(); |
| return stats.getSummaryAggregate(); |
| } |
| |
| /** |
| * Query network usage statistics summaries. Result filtered to include only uids belonging to |
| * calling user. Result is aggregated over time, hence all buckets will have the same start and |
| * end timestamps. Not aggregated over state, uid, default network, metered, or roaming. This |
| * means buckets' start and end timestamps are going to be the same as the 'startTime' and |
| * 'endTime' parameters. State, uid, metered, and roaming are going to vary, and tag is going to |
| * be the same. |
| * |
| * @param networkType As defined in {@link ConnectivityManager}, e.g. |
| * {@link ConnectivityManager#TYPE_MOBILE}, {@link ConnectivityManager#TYPE_WIFI} |
| * etc. |
| * @param subscriberId If applicable, the subscriber id of the network interface. |
| * @param startTime Start of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @param endTime End of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @return Statistics object or null if permissions are insufficient or error happened during |
| * statistics collection. |
| */ |
| public NetworkStats querySummary(int networkType, String subscriberId, long startTime, |
| long endTime) throws SecurityException, RemoteException { |
| NetworkTemplate template; |
| try { |
| template = createTemplate(networkType, subscriberId); |
| } catch (IllegalArgumentException e) { |
| if (DBG) Log.e(TAG, "Cannot create template", e); |
| return null; |
| } |
| |
| return querySummary(template, startTime, endTime); |
| } |
| |
| /** @hide */ |
| public NetworkStats querySummary(NetworkTemplate template, long startTime, |
| long endTime) throws SecurityException, RemoteException { |
| NetworkStats result; |
| result = new NetworkStats(mContext, template, mFlags, startTime, endTime, mService); |
| result.startSummaryEnumeration(); |
| |
| return result; |
| } |
| |
| /** |
| * Query network usage statistics details for a given uid. |
| * |
| * #see queryDetailsForUidTagState(int, String, long, long, int, int, int) |
| */ |
| public NetworkStats queryDetailsForUid(int networkType, String subscriberId, |
| long startTime, long endTime, int uid) throws SecurityException { |
| return queryDetailsForUidTagState(networkType, subscriberId, startTime, endTime, uid, |
| NetworkStats.Bucket.TAG_NONE, NetworkStats.Bucket.STATE_ALL); |
| } |
| |
| /** @hide */ |
| public NetworkStats queryDetailsForUid(NetworkTemplate template, |
| long startTime, long endTime, int uid) throws SecurityException { |
| return queryDetailsForUidTagState(template, startTime, endTime, uid, |
| NetworkStats.Bucket.TAG_NONE, NetworkStats.Bucket.STATE_ALL); |
| } |
| |
| /** |
| * Query network usage statistics details for a given uid and tag. |
| * |
| * #see queryDetailsForUidTagState(int, String, long, long, int, int, int) |
| */ |
| public NetworkStats queryDetailsForUidTag(int networkType, String subscriberId, |
| long startTime, long endTime, int uid, int tag) throws SecurityException { |
| return queryDetailsForUidTagState(networkType, subscriberId, startTime, endTime, uid, |
| tag, NetworkStats.Bucket.STATE_ALL); |
| } |
| |
| /** |
| * Query network usage statistics details for a given uid, tag, and state. Only usable for uids |
| * belonging to calling user. Result is not aggregated over time. This means buckets' start and |
| * end timestamps are going to be between 'startTime' and 'endTime' parameters. The uid is going |
| * to be the same as the 'uid' parameter, the tag the same as the 'tag' parameter, and the state |
| * the same as the 'state' parameter. |
| * defaultNetwork is going to be {@link NetworkStats.Bucket#DEFAULT_NETWORK_ALL}, |
| * metered is going to be {@link NetworkStats.Bucket#METERED_ALL}, and |
| * roaming is going to be {@link NetworkStats.Bucket#ROAMING_ALL}. |
| * <p>Only includes buckets that atomically occur in the inclusive time range. Doesn't |
| * interpolate across partial buckets. Since bucket length is in the order of hours, this |
| * method cannot be used to measure data usage on a fine grained time scale. |
| * |
| * @param networkType As defined in {@link ConnectivityManager}, e.g. |
| * {@link ConnectivityManager#TYPE_MOBILE}, {@link ConnectivityManager#TYPE_WIFI} |
| * etc. |
| * @param subscriberId If applicable, the subscriber id of the network interface. |
| * @param startTime Start of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @param endTime End of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @param uid UID of app |
| * @param tag TAG of interest. Use {@link NetworkStats.Bucket#TAG_NONE} for no tags. |
| * @param state state of interest. Use {@link NetworkStats.Bucket#STATE_ALL} to aggregate |
| * traffic from all states. |
| * @return Statistics object or null if an error happened during statistics collection. |
| * @throws SecurityException if permissions are insufficient to read network statistics. |
| */ |
| public NetworkStats queryDetailsForUidTagState(int networkType, String subscriberId, |
| long startTime, long endTime, int uid, int tag, int state) throws SecurityException { |
| NetworkTemplate template; |
| template = createTemplate(networkType, subscriberId); |
| |
| return queryDetailsForUidTagState(template, startTime, endTime, uid, tag, state); |
| } |
| |
| /** @hide */ |
| public NetworkStats queryDetailsForUidTagState(NetworkTemplate template, |
| long startTime, long endTime, int uid, int tag, int state) throws SecurityException { |
| |
| NetworkStats result; |
| try { |
| result = new NetworkStats(mContext, template, mFlags, startTime, endTime, mService); |
| result.startHistoryEnumeration(uid, tag, state); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Error while querying stats for uid=" + uid + " tag=" + tag |
| + " state=" + state, e); |
| return null; |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Query network usage statistics details. Result filtered to include only uids belonging to |
| * calling user. Result is aggregated over state but not aggregated over time, uid, tag, |
| * metered, nor roaming. This means buckets' start and end timestamps are going to be between |
| * 'startTime' and 'endTime' parameters. State is going to be |
| * {@link NetworkStats.Bucket#STATE_ALL}, uid will vary, |
| * tag {@link NetworkStats.Bucket#TAG_NONE}, |
| * default network is going to be {@link NetworkStats.Bucket#DEFAULT_NETWORK_ALL}, |
| * metered is going to be {@link NetworkStats.Bucket#METERED_ALL}, |
| * and roaming is going to be {@link NetworkStats.Bucket#ROAMING_ALL}. |
| * <p>Only includes buckets that atomically occur in the inclusive time range. Doesn't |
| * interpolate across partial buckets. Since bucket length is in the order of hours, this |
| * method cannot be used to measure data usage on a fine grained time scale. |
| * |
| * @param networkType As defined in {@link ConnectivityManager}, e.g. |
| * {@link ConnectivityManager#TYPE_MOBILE}, {@link ConnectivityManager#TYPE_WIFI} |
| * etc. |
| * @param subscriberId If applicable, the subscriber id of the network interface. |
| * @param startTime Start of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @param endTime End of period. Defined in terms of "Unix time", see |
| * {@link java.lang.System#currentTimeMillis}. |
| * @return Statistics object or null if permissions are insufficient or error happened during |
| * statistics collection. |
| */ |
| public NetworkStats queryDetails(int networkType, String subscriberId, long startTime, |
| long endTime) throws SecurityException, RemoteException { |
| NetworkTemplate template; |
| try { |
| template = createTemplate(networkType, subscriberId); |
| } catch (IllegalArgumentException e) { |
| if (DBG) Log.e(TAG, "Cannot create template", e); |
| return null; |
| } |
| |
| NetworkStats result; |
| result = new NetworkStats(mContext, template, mFlags, startTime, endTime, mService); |
| result.startUserUidEnumeration(); |
| return result; |
| } |
| |
| /** @hide */ |
| public void registerUsageCallback(NetworkTemplate template, int networkType, |
| long thresholdBytes, UsageCallback callback, @Nullable Handler handler) { |
| Objects.requireNonNull(callback, "UsageCallback cannot be null"); |
| |
| final Looper looper; |
| if (handler == null) { |
| looper = Looper.myLooper(); |
| } else { |
| looper = handler.getLooper(); |
| } |
| |
| DataUsageRequest request = new DataUsageRequest(DataUsageRequest.REQUEST_ID_UNSET, |
| template, thresholdBytes); |
| try { |
| CallbackHandler callbackHandler = new CallbackHandler(looper, networkType, |
| template.getSubscriberId(), callback); |
| callback.request = mService.registerUsageCallback( |
| mContext.getOpPackageName(), request, new Messenger(callbackHandler), |
| new Binder()); |
| if (DBG) Log.d(TAG, "registerUsageCallback returned " + callback.request); |
| |
| if (callback.request == null) { |
| Log.e(TAG, "Request from callback is null; should not happen"); |
| } |
| } catch (RemoteException e) { |
| if (DBG) Log.d(TAG, "Remote exception when registering callback"); |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Registers to receive notifications about data usage on specified networks. |
| * |
| * #see registerUsageCallback(int, String[], long, UsageCallback, Handler) |
| */ |
| public void registerUsageCallback(int networkType, String subscriberId, long thresholdBytes, |
| UsageCallback callback) { |
| registerUsageCallback(networkType, subscriberId, thresholdBytes, callback, |
| null /* handler */); |
| } |
| |
| /** |
| * Registers to receive notifications about data usage on specified networks. |
| * |
| * <p>The callbacks will continue to be called as long as the process is live or |
| * {@link #unregisterUsageCallback} is called. |
| * |
| * @param networkType Type of network to monitor. Either |
| {@link ConnectivityManager#TYPE_MOBILE} or {@link ConnectivityManager#TYPE_WIFI}. |
| * @param subscriberId If applicable, the subscriber id of the network interface. |
| * @param thresholdBytes Threshold in bytes to be notified on. |
| * @param callback The {@link UsageCallback} that the system will call when data usage |
| * has exceeded the specified threshold. |
| * @param handler to dispatch callback events through, otherwise if {@code null} it uses |
| * the calling thread. |
| */ |
| public void registerUsageCallback(int networkType, String subscriberId, long thresholdBytes, |
| UsageCallback callback, @Nullable Handler handler) { |
| NetworkTemplate template = createTemplate(networkType, subscriberId); |
| if (DBG) { |
| Log.d(TAG, "registerUsageCallback called with: {" |
| + " networkType=" + networkType |
| + " subscriberId=" + subscriberId |
| + " thresholdBytes=" + thresholdBytes |
| + " }"); |
| } |
| registerUsageCallback(template, networkType, thresholdBytes, callback, handler); |
| } |
| |
| /** |
| * Unregisters callbacks on data usage. |
| * |
| * @param callback The {@link UsageCallback} used when registering. |
| */ |
| public void unregisterUsageCallback(UsageCallback callback) { |
| if (callback == null || callback.request == null |
| || callback.request.requestId == DataUsageRequest.REQUEST_ID_UNSET) { |
| throw new IllegalArgumentException("Invalid UsageCallback"); |
| } |
| try { |
| mService.unregisterUsageRequest(callback.request); |
| } catch (RemoteException e) { |
| if (DBG) Log.d(TAG, "Remote exception when unregistering callback"); |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Base class for usage callbacks. Should be extended by applications wanting notifications. |
| */ |
| public static abstract class UsageCallback { |
| |
| /** |
| * Called when data usage has reached the given threshold. |
| */ |
| public abstract void onThresholdReached(int networkType, String subscriberId); |
| |
| /** |
| * @hide used for internal bookkeeping |
| */ |
| private DataUsageRequest request; |
| } |
| |
| /** |
| * Registers a custom provider of {@link android.net.NetworkStats} to provide network statistics |
| * to the system. To unregister, invoke {@link #unregisterNetworkStatsProvider}. |
| * Note that no de-duplication of statistics between providers is performed, so each provider |
| * must only report network traffic that is not being reported by any other provider. Also note |
| * that the provider cannot be re-registered after unregistering. |
| * |
| * @param tag a human readable identifier of the custom network stats provider. This is only |
| * used for debugging. |
| * @param provider the subclass of {@link NetworkStatsProvider} that needs to be |
| * registered to the system. |
| * @hide |
| */ |
| @SystemApi |
| @RequiresPermission(anyOf = { |
| android.Manifest.permission.NETWORK_STATS_PROVIDER, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK}) |
| @NonNull public void registerNetworkStatsProvider( |
| @NonNull String tag, |
| @NonNull NetworkStatsProvider provider) { |
| try { |
| if (provider.getProviderCallbackBinder() != null) { |
| throw new IllegalArgumentException("provider is already registered"); |
| } |
| final INetworkStatsProviderCallback cbBinder = |
| mService.registerNetworkStatsProvider(tag, provider.getProviderBinder()); |
| provider.setProviderCallbackBinder(cbBinder); |
| } catch (RemoteException e) { |
| e.rethrowAsRuntimeException(); |
| } |
| } |
| |
| /** |
| * Unregisters an instance of {@link NetworkStatsProvider}. |
| * |
| * @param provider the subclass of {@link NetworkStatsProvider} that needs to be |
| * unregistered to the system. |
| * @hide |
| */ |
| @SystemApi |
| @RequiresPermission(anyOf = { |
| android.Manifest.permission.NETWORK_STATS_PROVIDER, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK}) |
| @NonNull public void unregisterNetworkStatsProvider(@NonNull NetworkStatsProvider provider) { |
| try { |
| provider.getProviderCallbackBinderOrThrow().unregister(); |
| } catch (RemoteException e) { |
| e.rethrowAsRuntimeException(); |
| } |
| } |
| |
| private static NetworkTemplate createTemplate(int networkType, String subscriberId) { |
| final NetworkTemplate template; |
| switch (networkType) { |
| case ConnectivityManager.TYPE_MOBILE: |
| template = subscriberId == null |
| ? NetworkTemplate.buildTemplateMobileWildcard() |
| : NetworkTemplate.buildTemplateMobileAll(subscriberId); |
| break; |
| case ConnectivityManager.TYPE_WIFI: |
| template = NetworkTemplate.buildTemplateWifiWildcard(); |
| break; |
| default: |
| throw new IllegalArgumentException("Cannot create template for network type " |
| + networkType + ", subscriberId '" |
| + NetworkIdentity.scrubSubscriberId(subscriberId) + "'."); |
| } |
| return template; |
| } |
| |
| private static class CallbackHandler extends Handler { |
| private final int mNetworkType; |
| private final String mSubscriberId; |
| private UsageCallback mCallback; |
| |
| CallbackHandler(Looper looper, int networkType, String subscriberId, |
| UsageCallback callback) { |
| super(looper); |
| mNetworkType = networkType; |
| mSubscriberId = subscriberId; |
| mCallback = callback; |
| } |
| |
| @Override |
| public void handleMessage(Message message) { |
| DataUsageRequest request = |
| (DataUsageRequest) getObject(message, DataUsageRequest.PARCELABLE_KEY); |
| |
| switch (message.what) { |
| case CALLBACK_LIMIT_REACHED: { |
| if (mCallback != null) { |
| mCallback.onThresholdReached(mNetworkType, mSubscriberId); |
| } else { |
| Log.e(TAG, "limit reached with released callback for " + request); |
| } |
| break; |
| } |
| case CALLBACK_RELEASED: { |
| if (DBG) Log.d(TAG, "callback released for " + request); |
| mCallback = null; |
| break; |
| } |
| } |
| } |
| |
| private static Object getObject(Message msg, String key) { |
| return msg.getData().getParcelable(key); |
| } |
| } |
| } |
