| /* |
| * Copyright (C) 2016 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.internal.telephony.metrics; |
| |
| import android.os.SystemClock; |
| |
| import com.android.internal.telephony.nano.TelephonyProto.SmsSession; |
| |
| import java.util.ArrayDeque; |
| import java.util.Deque; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** The ongoing SMS session */ |
| public class InProgressSmsSession { |
| |
| /** Maximum events stored in the session */ |
| private static final int MAX_EVENTS = 20; |
| |
| /** Phone id */ |
| public final int phoneId; |
| |
| /** SMS session events */ |
| public final Deque<SmsSession.Event> events; |
| |
| /** Sms session starting system time in minute */ |
| public final int startSystemTimeMin; |
| |
| /** Sms session starting elapsed time in milliseconds */ |
| public final long startElapsedTimeMs; |
| |
| /** The last event's time */ |
| private long mLastElapsedTimeMs; |
| |
| /** Indicating events dropped */ |
| private boolean mEventsDropped = false; |
| |
| /** The expected SMS response #. One session could contain multiple SMS requests/responses. */ |
| private AtomicInteger mNumExpectedResponses = new AtomicInteger(0); |
| |
| /** Increase the expected response # */ |
| public void increaseExpectedResponse() { |
| mNumExpectedResponses.incrementAndGet(); |
| } |
| |
| /** Decrease the expected response # */ |
| public void decreaseExpectedResponse() { |
| mNumExpectedResponses.decrementAndGet(); |
| } |
| |
| /** Get the expected response # */ |
| public int getNumExpectedResponses() { |
| return mNumExpectedResponses.get(); |
| } |
| |
| /** Check if events dropped */ |
| public boolean isEventsDropped() { return mEventsDropped; } |
| |
| /** |
| * Constructor |
| * |
| * @param phoneId Phone id |
| */ |
| public InProgressSmsSession(int phoneId) { |
| this.phoneId = phoneId; |
| events = new ArrayDeque<>(); |
| // Save session start with lowered precision due to the privacy requirements |
| startSystemTimeMin = TelephonyMetrics.roundSessionStart(System.currentTimeMillis()); |
| startElapsedTimeMs = SystemClock.elapsedRealtime(); |
| mLastElapsedTimeMs = startElapsedTimeMs; |
| } |
| |
| /** |
| * Add event |
| * |
| * @param builder Event builder |
| */ |
| public void addEvent(SmsSessionEventBuilder builder) { |
| addEvent(SystemClock.elapsedRealtime(), builder); |
| } |
| |
| /** |
| * Add event |
| * |
| * @param timestamp Timestamp to be recoded with the event |
| * @param builder Event builder |
| */ |
| public synchronized void addEvent(long timestamp, SmsSessionEventBuilder builder) { |
| if (events.size() >= MAX_EVENTS) { |
| events.removeFirst(); |
| mEventsDropped = true; |
| } |
| |
| builder.setDelay(TelephonyMetrics.toPrivacyFuzzedTimeInterval( |
| mLastElapsedTimeMs, timestamp)); |
| |
| events.add(builder.build()); |
| mLastElapsedTimeMs = timestamp; |
| } |
| } |