| /* |
| * 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 android.net.metrics; |
| |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| |
| /** |
| * {@hide} |
| */ |
| public class DnsEvent extends IpConnectivityEvent implements Parcelable { |
| public final int netId; |
| |
| // The event type is currently only 1 or 2, so we store it as a byte. |
| public final byte[] eventTypes; |
| // Current getaddrinfo codes go from 1 to EAI_MAX = 15. gethostbyname returns errno, but there |
| // are fewer than 255 errno values. So we store the result code in a byte as well. |
| public final byte[] returnCodes; |
| // The latency is an integer because a) short arrays aren't parcelable and b) a short can only |
| // store a maximum latency of 32757 or 65535 ms, which is too short for pathologically slow |
| // queries. |
| public final int[] latenciesMs; |
| |
| private DnsEvent(int netId, byte[] eventTypes, byte[] returnCodes, int[] latenciesMs) { |
| this.netId = netId; |
| this.eventTypes = eventTypes; |
| this.returnCodes = returnCodes; |
| this.latenciesMs = latenciesMs; |
| } |
| |
| private DnsEvent(Parcel in) { |
| netId = in.readInt(); |
| eventTypes = in.createByteArray(); |
| returnCodes = in.createByteArray(); |
| latenciesMs = in.createIntArray(); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel out, int flags) { |
| out.writeInt(netId); |
| out.writeByteArray(eventTypes); |
| out.writeByteArray(returnCodes); |
| out.writeIntArray(latenciesMs); |
| } |
| |
| public static final Parcelable.Creator<DnsEvent> CREATOR = new Parcelable.Creator<DnsEvent>() { |
| @Override |
| public DnsEvent createFromParcel(Parcel in) { |
| return new DnsEvent(in); |
| } |
| |
| @Override |
| public DnsEvent[] newArray(int size) { |
| return new DnsEvent[size]; |
| } |
| }; |
| |
| public static void logEvent( |
| int netId, byte[] eventTypes, byte[] returnCodes, int[] latenciesMs) { |
| IpConnectivityEvent.logEvent(IPCE_DNS_LOOKUPS, |
| new DnsEvent(netId, eventTypes, returnCodes, latenciesMs)); |
| } |
| } |