IpConnectivityLog.java revision ec27c4d9f33615be1f94d6bb5c5fd1358580ac05
1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.net.metrics; 18 19import android.net.ConnectivityMetricsEvent; 20import android.net.IIpConnectivityMetrics; 21import android.os.Parcelable; 22import android.os.RemoteException; 23import android.os.ServiceManager; 24import android.util.Log; 25import com.android.internal.annotations.VisibleForTesting; 26 27/** 28 * Class for logging IpConnectvity events with IpConnectivityMetrics 29 * {@hide} 30 */ 31public class IpConnectivityLog { 32 private static final String TAG = IpConnectivityLog.class.getSimpleName(); 33 private static final boolean DBG = false; 34 35 public static final String SERVICE_NAME = "connmetrics"; 36 37 private IIpConnectivityMetrics mService; 38 39 public IpConnectivityLog() { 40 } 41 42 @VisibleForTesting 43 public IpConnectivityLog(IIpConnectivityMetrics service) { 44 mService = service; 45 } 46 47 private boolean checkLoggerService() { 48 if (mService != null) { 49 return true; 50 } 51 final IIpConnectivityMetrics service = 52 IIpConnectivityMetrics.Stub.asInterface(ServiceManager.getService(SERVICE_NAME)); 53 if (service == null) { 54 return false; 55 } 56 // Two threads racing here will write the same pointer because getService 57 // is idempotent once MetricsLoggerService is initialized. 58 mService = service; 59 return true; 60 } 61 62 /** 63 * Log an IpConnectivity event. 64 * @param timestamp is the epoch timestamp of the event in ms. 65 * @param data is a Parcelable instance representing the event. 66 * @return true if the event was successfully logged. 67 */ 68 public boolean log(long timestamp, Parcelable data) { 69 if (!checkLoggerService()) { 70 if (DBG) { 71 Log.d(TAG, SERVICE_NAME + " service was not ready"); 72 } 73 return false; 74 } 75 76 try { 77 ConnectivityMetricsEvent ev = new ConnectivityMetricsEvent(); 78 ev.timestamp = timestamp; 79 ev.data = data; 80 int left = mService.logEvent(ev); 81 return left >= 0; 82 } catch (RemoteException e) { 83 Log.e(TAG, "Error logging event", e); 84 return false; 85 } 86 } 87 88 public void log(Parcelable event) { 89 log(System.currentTimeMillis(), event); 90 } 91} 92