| /* |
| * Copyright (C) 2017 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.util; |
| |
| import static android.Manifest.permission.DUMP; |
| import static android.Manifest.permission.PACKAGE_USAGE_STATS; |
| |
| import android.Manifest; |
| import android.annotation.NonNull; |
| import android.annotation.RequiresPermission; |
| import android.annotation.SystemApi; |
| import android.content.Context; |
| import android.os.IStatsManager; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| |
| /** |
| * StatsLog provides an API for developers to send events to statsd. The events can be used to |
| * define custom metrics inside statsd. |
| */ |
| public final class StatsLog extends StatsLogInternal { |
| private static final String TAG = "StatsLog"; |
| private static final boolean DEBUG = false; |
| |
| private static IStatsManager sService; |
| |
| private static Object sLogLock = new Object(); |
| |
| private StatsLog() { |
| } |
| |
| /** |
| * Logs a start event. |
| * |
| * @param label developer-chosen label. |
| * @return True if the log request was sent to statsd. |
| */ |
| public static boolean logStart(int label) { |
| synchronized (sLogLock) { |
| try { |
| IStatsManager service = getIStatsManagerLocked(); |
| if (service == null) { |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to find statsd when logging start"); |
| } |
| return false; |
| } |
| service.sendAppBreadcrumbAtom(label, |
| StatsLog.APP_BREADCRUMB_REPORTED__STATE__START); |
| return true; |
| } catch (RemoteException e) { |
| sService = null; |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to connect to statsd when logging start"); |
| } |
| return false; |
| } |
| } |
| } |
| |
| /** |
| * Logs a stop event. |
| * |
| * @param label developer-chosen label. |
| * @return True if the log request was sent to statsd. |
| */ |
| public static boolean logStop(int label) { |
| synchronized (sLogLock) { |
| try { |
| IStatsManager service = getIStatsManagerLocked(); |
| if (service == null) { |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to find statsd when logging stop"); |
| } |
| return false; |
| } |
| service.sendAppBreadcrumbAtom(label, StatsLog.APP_BREADCRUMB_REPORTED__STATE__STOP); |
| return true; |
| } catch (RemoteException e) { |
| sService = null; |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to connect to statsd when logging stop"); |
| } |
| return false; |
| } |
| } |
| } |
| |
| /** |
| * Logs an event that does not represent a start or stop boundary. |
| * |
| * @param label developer-chosen label. |
| * @return True if the log request was sent to statsd. |
| */ |
| public static boolean logEvent(int label) { |
| synchronized (sLogLock) { |
| try { |
| IStatsManager service = getIStatsManagerLocked(); |
| if (service == null) { |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to find statsd when logging event"); |
| } |
| return false; |
| } |
| service.sendAppBreadcrumbAtom( |
| label, StatsLog.APP_BREADCRUMB_REPORTED__STATE__UNSPECIFIED); |
| return true; |
| } catch (RemoteException e) { |
| sService = null; |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to connect to statsd when logging event"); |
| } |
| return false; |
| } |
| } |
| } |
| |
| /** |
| * Logs an event for binary push for module updates. |
| * |
| * @param trainName name of install train. |
| * @param trainVersionCode version code of the train. |
| * @param options optional flags about this install. |
| * The last 3 bits indicate options: |
| * 0x01: FLAG_REQUIRE_STAGING |
| * 0x02: FLAG_ROLLBACK_ENABLED |
| * 0x04: FLAG_REQUIRE_LOW_LATENCY_MONITOR |
| * @param state current install state. Defined as State enums in |
| * BinaryPushStateChanged atom in |
| * frameworks/base/cmds/statsd/src/atoms.proto |
| * @param experimentIds experiment ids. |
| * @return True if the log request was sent to statsd. |
| */ |
| @RequiresPermission(allOf = {DUMP, PACKAGE_USAGE_STATS}) |
| public static boolean logBinaryPushStateChanged(@NonNull String trainName, |
| long trainVersionCode, int options, int state, |
| @NonNull long[] experimentIds) { |
| synchronized (sLogLock) { |
| try { |
| IStatsManager service = getIStatsManagerLocked(); |
| if (service == null) { |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to find statsd when logging event"); |
| } |
| return false; |
| } |
| service.sendBinaryPushStateChangedAtom( |
| trainName, trainVersionCode, options, state, experimentIds); |
| return true; |
| } catch (RemoteException e) { |
| sService = null; |
| if (DEBUG) { |
| Slog.d(TAG, |
| "Failed to connect to StatsCompanionService when logging " |
| + "BinaryPushStateChanged"); |
| } |
| return false; |
| } |
| } |
| } |
| |
| /** |
| * Logs an event for watchdog rollbacks. |
| * |
| * @param rollbackType state of the rollback. |
| * @param packageName package name being rolled back. |
| * @param packageVersionCode version of the package being rolled back. |
| * |
| * @return True if the log request was sent to statsd. |
| * |
| * @hide |
| */ |
| @RequiresPermission(allOf = {DUMP, PACKAGE_USAGE_STATS}) |
| public static boolean logWatchdogRollbackOccurred(int rollbackType, String packageName, |
| long packageVersionCode) { |
| synchronized (sLogLock) { |
| try { |
| IStatsManager service = getIStatsManagerLocked(); |
| if (service == null) { |
| if (DEBUG) { |
| Slog.d(TAG, "Failed to find statsd when logging event"); |
| } |
| return false; |
| } |
| |
| service.sendWatchdogRollbackOccurredAtom(rollbackType, packageName, |
| packageVersionCode); |
| return true; |
| } catch (RemoteException e) { |
| sService = null; |
| if (DEBUG) { |
| Slog.d(TAG, |
| "Failed to connect to StatsCompanionService when logging " |
| + "WatchdogRollbackOccurred"); |
| } |
| return false; |
| } |
| } |
| } |
| |
| |
| private static IStatsManager getIStatsManagerLocked() throws RemoteException { |
| if (sService != null) { |
| return sService; |
| } |
| sService = IStatsManager.Stub.asInterface(ServiceManager.getService("stats")); |
| return sService; |
| } |
| |
| /** |
| * Write an event to stats log using the raw format. |
| * |
| * @param buffer The encoded buffer of data to write.. |
| * @param size The number of bytes from the buffer to write. |
| * @hide |
| */ |
| @SystemApi |
| public static native void writeRaw(@NonNull byte[] buffer, int size); |
| |
| private static void enforceDumpCallingPermission(Context context) { |
| context.enforceCallingPermission(android.Manifest.permission.DUMP, "Need DUMP permission."); |
| } |
| |
| private static void enforcesageStatsCallingPermission(Context context) { |
| context.enforceCallingPermission(Manifest.permission.PACKAGE_USAGE_STATS, |
| "Need PACKAGE_USAGE_STATS permission."); |
| } |
| } |