| /* |
| * 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.systemui.log; |
| |
| import static android.app.StatusBarManager.ALL_SESSIONS; |
| import static android.app.StatusBarManager.SESSION_BIOMETRIC_PROMPT; |
| import static android.app.StatusBarManager.SESSION_KEYGUARD; |
| |
| import android.annotation.Nullable; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import androidx.annotation.NonNull; |
| |
| import com.android.internal.logging.InstanceId; |
| import com.android.internal.logging.InstanceIdSequence; |
| import com.android.internal.logging.UiEvent; |
| import com.android.internal.logging.UiEventLogger; |
| import com.android.internal.statusbar.IStatusBarService; |
| import com.android.keyguard.KeyguardUpdateMonitor; |
| import com.android.keyguard.KeyguardUpdateMonitorCallback; |
| import com.android.systemui.CoreStartable; |
| import com.android.systemui.biometrics.AuthController; |
| import com.android.systemui.dagger.SysUISingleton; |
| import com.android.systemui.statusbar.policy.KeyguardStateController; |
| |
| import java.io.PrintWriter; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * Track Session InstanceIds to be used for metrics logging to correlate logs in the same |
| * session. Can be used across processes via StatusBarManagerService#registerSessionListener |
| */ |
| @SysUISingleton |
| public class SessionTracker implements CoreStartable { |
| private static final String TAG = "SessionTracker"; |
| |
| // To enable logs: `adb shell setprop log.tag.SessionTracker DEBUG` & restart sysui |
| private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); |
| |
| // At most 20 bits: ~1m possibilities, ~0.5% probability of collision in 100 values |
| private final InstanceIdSequence mInstanceIdGenerator = new InstanceIdSequence(1 << 20); |
| |
| private final IStatusBarService mStatusBarManagerService; |
| private final AuthController mAuthController; |
| private final KeyguardUpdateMonitor mKeyguardUpdateMonitor; |
| private final KeyguardStateController mKeyguardStateController; |
| private final UiEventLogger mUiEventLogger; |
| private final Map<Integer, InstanceId> mSessionToInstanceId = new HashMap<>(); |
| |
| private boolean mKeyguardSessionStarted; |
| |
| @Inject |
| public SessionTracker( |
| IStatusBarService statusBarService, |
| AuthController authController, |
| KeyguardUpdateMonitor keyguardUpdateMonitor, |
| KeyguardStateController keyguardStateController, |
| UiEventLogger uiEventLogger |
| ) { |
| mStatusBarManagerService = statusBarService; |
| mAuthController = authController; |
| mKeyguardUpdateMonitor = keyguardUpdateMonitor; |
| mKeyguardStateController = keyguardStateController; |
| mUiEventLogger = uiEventLogger; |
| } |
| |
| @Override |
| public void start() { |
| mAuthController.addCallback(mAuthControllerCallback); |
| mKeyguardUpdateMonitor.registerCallback(mKeyguardUpdateMonitorCallback); |
| mKeyguardStateController.addCallback(mKeyguardStateCallback); |
| |
| if (mKeyguardStateController.isShowing()) { |
| mKeyguardSessionStarted = true; |
| startSession(SESSION_KEYGUARD); |
| } |
| } |
| |
| /** |
| * Get the session ID associated with the passed session type. |
| */ |
| public @Nullable InstanceId getSessionId(int type) { |
| return mSessionToInstanceId.getOrDefault(type, null); |
| } |
| |
| private void startSession(int type) { |
| if (mSessionToInstanceId.getOrDefault(type, null) != null) { |
| Log.e(TAG, "session [" + getString(type) + "] was already started"); |
| return; |
| } |
| |
| final InstanceId instanceId = mInstanceIdGenerator.newInstanceId(); |
| mSessionToInstanceId.put(type, instanceId); |
| try { |
| if (DEBUG) { |
| Log.d(TAG, "Session start for [" + getString(type) + "] id=" + instanceId); |
| } |
| mStatusBarManagerService.onSessionStarted(type, instanceId); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Unable to send onSessionStarted for session=" |
| + "[" + getString(type) + "]", e); |
| } |
| } |
| |
| private void endSession(int type) { |
| endSession(type, null); |
| } |
| |
| private void endSession(int type, @Nullable SessionUiEvent endSessionUiEvent) { |
| if (mSessionToInstanceId.getOrDefault(type, null) == null) { |
| Log.e(TAG, "session [" + getString(type) + "] was not started"); |
| return; |
| } |
| |
| final InstanceId instanceId = mSessionToInstanceId.get(type); |
| mSessionToInstanceId.put(type, null); |
| try { |
| if (DEBUG) { |
| Log.d(TAG, "Session end for [" + getString(type) + "] id=" + instanceId); |
| } |
| if (endSessionUiEvent != null) { |
| mUiEventLogger.log(endSessionUiEvent, instanceId); |
| } |
| mStatusBarManagerService.onSessionEnded(type, instanceId); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Unable to send onSessionEnded for session=" |
| + "[" + getString(type) + "]", e); |
| } |
| } |
| |
| public KeyguardUpdateMonitorCallback mKeyguardUpdateMonitorCallback = |
| new KeyguardUpdateMonitorCallback() { |
| @Override |
| public void onStartedGoingToSleep(int why) { |
| if (mKeyguardSessionStarted) { |
| endSession(SESSION_KEYGUARD, SessionUiEvent.KEYGUARD_SESSION_END_GOING_TO_SLEEP); |
| } |
| |
| // Start a new session whenever the device goes to sleep |
| mKeyguardSessionStarted = true; |
| startSession(SESSION_KEYGUARD); |
| } |
| }; |
| |
| |
| public KeyguardStateController.Callback mKeyguardStateCallback = |
| new KeyguardStateController.Callback() { |
| public void onKeyguardShowingChanged() { |
| boolean wasSessionStarted = mKeyguardSessionStarted; |
| boolean keyguardShowing = mKeyguardStateController.isShowing(); |
| if (keyguardShowing && !wasSessionStarted) { |
| // the keyguard can start showing without the device going to sleep (ie: lockdown |
| // from the power button), so we start a new keyguard session when the keyguard is |
| // newly shown in addition to when the device starts going to sleep |
| mKeyguardSessionStarted = true; |
| startSession(SESSION_KEYGUARD); |
| } else if (!keyguardShowing && wasSessionStarted) { |
| mKeyguardSessionStarted = false; |
| endSession(SESSION_KEYGUARD, |
| SessionUiEvent.KEYGUARD_SESSION_END_KEYGUARD_GOING_AWAY); |
| } |
| } |
| }; |
| |
| public AuthController.Callback mAuthControllerCallback = new AuthController.Callback() { |
| @Override |
| public void onBiometricPromptShown() { |
| startSession(SESSION_BIOMETRIC_PROMPT); |
| } |
| |
| @Override |
| public void onBiometricPromptDismissed() { |
| endSession(SESSION_BIOMETRIC_PROMPT); |
| } |
| }; |
| |
| @Override |
| public void dump(@NonNull PrintWriter pw, @NonNull String[] args) { |
| for (int session : ALL_SESSIONS) { |
| pw.println(" " + getString(session) |
| + " instanceId=" + mSessionToInstanceId.get(session)); |
| } |
| } |
| |
| /** |
| * @return the string representation of a SINGLE SessionFlag. Combined SessionFlags will be |
| * considered unknown. |
| */ |
| public static String getString(int sessionType) { |
| if (sessionType == SESSION_KEYGUARD) { |
| return "KEYGUARD"; |
| } else if (sessionType == SESSION_BIOMETRIC_PROMPT) { |
| return "BIOMETRIC_PROMPT"; |
| } |
| |
| return "unknownType=" + sessionType; |
| } |
| |
| enum SessionUiEvent implements UiEventLogger.UiEventEnum { |
| @UiEvent(doc = "A keyguard session ended due to the keyguard going away.") |
| KEYGUARD_SESSION_END_KEYGUARD_GOING_AWAY(1354), |
| |
| @UiEvent(doc = "A keyguard session ended due to display going to sleep.") |
| KEYGUARD_SESSION_END_GOING_TO_SLEEP(1355); |
| |
| private final int mId; |
| SessionUiEvent(int id) { |
| mId = id; |
| } |
| |
| @Override |
| public int getId() { |
| return mId; |
| } |
| } |
| } |