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 17 package com.android.server.connectivity; 18 19 import android.net.ConnectivityMetricsEvent; 20 import android.net.metrics.ApfProgramEvent; 21 import android.net.metrics.ApfStats; 22 import android.net.metrics.DefaultNetworkEvent; 23 import android.net.metrics.DhcpClientEvent; 24 import android.net.metrics.DhcpErrorEvent; 25 import android.net.metrics.DnsEvent; 26 import android.net.metrics.IpManagerEvent; 27 import android.net.metrics.IpReachabilityEvent; 28 import android.net.metrics.NetworkEvent; 29 import android.net.metrics.RaEvent; 30 import android.net.metrics.ValidationProbeEvent; 31 import android.os.Parcelable; 32 import com.android.server.connectivity.metrics.IpConnectivityLogClass; 33 import java.io.IOException; 34 import java.util.ArrayList; 35 import java.util.List; 36 37 import static com.android.server.connectivity.metrics.IpConnectivityLogClass.IpConnectivityEvent; 38 import static com.android.server.connectivity.metrics.IpConnectivityLogClass.IpConnectivityLog; 39 import static com.android.server.connectivity.metrics.IpConnectivityLogClass.NetworkId; 40 41 /** {@hide} */ 42 final public class IpConnectivityEventBuilder { 43 private IpConnectivityEventBuilder() { 44 } 45 46 public static byte[] serialize(int dropped, List<ConnectivityMetricsEvent> events) 47 throws IOException { 48 final IpConnectivityLog log = new IpConnectivityLog(); 49 log.events = toProto(events); 50 log.droppedEvents = dropped; 51 return IpConnectivityLog.toByteArray(log); 52 } 53 54 public static IpConnectivityEvent[] toProto(List<ConnectivityMetricsEvent> eventsIn) { 55 final ArrayList<IpConnectivityEvent> eventsOut = new ArrayList<>(eventsIn.size()); 56 for (ConnectivityMetricsEvent in : eventsIn) { 57 final IpConnectivityEvent out = toProto(in); 58 if (out == null) { 59 continue; 60 } 61 eventsOut.add(out); 62 } 63 return eventsOut.toArray(new IpConnectivityEvent[eventsOut.size()]); 64 } 65 66 public static IpConnectivityEvent toProto(ConnectivityMetricsEvent ev) { 67 final IpConnectivityEvent out = new IpConnectivityEvent(); 68 if (!setEvent(out, ev.data)) { 69 return null; 70 } 71 out.timeMs = ev.timestamp; 72 return out; 73 } 74 75 private static boolean setEvent(IpConnectivityEvent out, Parcelable in) { 76 if (in instanceof DhcpErrorEvent) { 77 setDhcpErrorEvent(out, (DhcpErrorEvent) in); 78 return true; 79 } 80 81 if (in instanceof DhcpClientEvent) { 82 setDhcpClientEvent(out, (DhcpClientEvent) in); 83 return true; 84 } 85 86 if (in instanceof DnsEvent) { 87 setDnsEvent(out, (DnsEvent) in); 88 return true; 89 } 90 91 if (in instanceof IpManagerEvent) { 92 setIpManagerEvent(out, (IpManagerEvent) in); 93 return true; 94 } 95 96 if (in instanceof IpReachabilityEvent) { 97 setIpReachabilityEvent(out, (IpReachabilityEvent) in); 98 return true; 99 } 100 101 if (in instanceof DefaultNetworkEvent) { 102 setDefaultNetworkEvent(out, (DefaultNetworkEvent) in); 103 return true; 104 } 105 106 if (in instanceof NetworkEvent) { 107 setNetworkEvent(out, (NetworkEvent) in); 108 return true; 109 } 110 111 if (in instanceof ValidationProbeEvent) { 112 setValidationProbeEvent(out, (ValidationProbeEvent) in); 113 return true; 114 } 115 116 if (in instanceof ApfProgramEvent) { 117 setApfProgramEvent(out, (ApfProgramEvent) in); 118 return true; 119 } 120 121 if (in instanceof ApfStats) { 122 setApfStats(out, (ApfStats) in); 123 return true; 124 } 125 126 if (in instanceof RaEvent) { 127 setRaEvent(out, (RaEvent) in); 128 return true; 129 } 130 131 return false; 132 } 133 134 private static void setDhcpErrorEvent(IpConnectivityEvent out, DhcpErrorEvent in) { 135 out.dhcpEvent = new IpConnectivityLogClass.DHCPEvent(); 136 out.dhcpEvent.ifName = in.ifName; 137 out.dhcpEvent.errorCode = in.errorCode; 138 } 139 140 private static void setDhcpClientEvent(IpConnectivityEvent out, DhcpClientEvent in) { 141 out.dhcpEvent = new IpConnectivityLogClass.DHCPEvent(); 142 out.dhcpEvent.ifName = in.ifName; 143 out.dhcpEvent.stateTransition = in.msg; 144 out.dhcpEvent.durationMs = in.durationMs; 145 } 146 147 private static void setDnsEvent(IpConnectivityEvent out, DnsEvent in) { 148 out.dnsLookupBatch = new IpConnectivityLogClass.DNSLookupBatch(); 149 out.dnsLookupBatch.networkId = netIdOf(in.netId); 150 out.dnsLookupBatch.eventTypes = bytesToInts(in.eventTypes); 151 out.dnsLookupBatch.returnCodes = bytesToInts(in.returnCodes); 152 out.dnsLookupBatch.latenciesMs = in.latenciesMs; 153 } 154 155 private static void setIpManagerEvent(IpConnectivityEvent out, IpManagerEvent in) { 156 out.ipProvisioningEvent = new IpConnectivityLogClass.IpProvisioningEvent(); 157 out.ipProvisioningEvent.ifName = in.ifName; 158 out.ipProvisioningEvent.eventType = in.eventType; 159 out.ipProvisioningEvent.latencyMs = (int) in.durationMs; 160 } 161 162 private static void setIpReachabilityEvent(IpConnectivityEvent out, IpReachabilityEvent in) { 163 out.ipReachabilityEvent = new IpConnectivityLogClass.IpReachabilityEvent(); 164 out.ipReachabilityEvent.ifName = in.ifName; 165 out.ipReachabilityEvent.eventType = in.eventType; 166 } 167 168 private static void setDefaultNetworkEvent(IpConnectivityEvent out, DefaultNetworkEvent in) { 169 out.defaultNetworkEvent = new IpConnectivityLogClass.DefaultNetworkEvent(); 170 out.defaultNetworkEvent.networkId = netIdOf(in.netId); 171 out.defaultNetworkEvent.previousNetworkId = netIdOf(in.prevNetId); 172 out.defaultNetworkEvent.transportTypes = in.transportTypes; 173 out.defaultNetworkEvent.previousNetworkIpSupport = ipSupportOf(in); 174 } 175 176 private static void setNetworkEvent(IpConnectivityEvent out, NetworkEvent in) { 177 out.networkEvent = new IpConnectivityLogClass.NetworkEvent(); 178 out.networkEvent.networkId = netIdOf(in.netId); 179 out.networkEvent.eventType = in.eventType; 180 out.networkEvent.latencyMs = (int) in.durationMs; 181 } 182 183 private static void setValidationProbeEvent(IpConnectivityEvent out, ValidationProbeEvent in) { 184 out.validationProbeEvent = new IpConnectivityLogClass.ValidationProbeEvent(); 185 out.validationProbeEvent.networkId = netIdOf(in.netId); 186 out.validationProbeEvent.latencyMs = (int) in.durationMs; 187 out.validationProbeEvent.probeType = in.probeType; 188 out.validationProbeEvent.probeResult = in.returnCode; 189 } 190 191 private static void setApfProgramEvent(IpConnectivityEvent out, ApfProgramEvent in) { 192 out.apfProgramEvent = new IpConnectivityLogClass.ApfProgramEvent(); 193 out.apfProgramEvent.lifetime = in.lifetime; 194 out.apfProgramEvent.filteredRas = in.filteredRas; 195 out.apfProgramEvent.currentRas = in.currentRas; 196 out.apfProgramEvent.programLength = in.programLength; 197 if (isBitSet(in.flags, ApfProgramEvent.FLAG_MULTICAST_FILTER_ON)) { 198 out.apfProgramEvent.dropMulticast = true; 199 } 200 if (isBitSet(in.flags, ApfProgramEvent.FLAG_HAS_IPV4_ADDRESS)) { 201 out.apfProgramEvent.hasIpv4Addr = true; 202 } 203 } 204 205 private static void setApfStats(IpConnectivityEvent out, ApfStats in) { 206 out.apfStatistics = new IpConnectivityLogClass.ApfStatistics(); 207 out.apfStatistics.durationMs = in.durationMs; 208 out.apfStatistics.receivedRas = in.receivedRas; 209 out.apfStatistics.matchingRas = in.matchingRas; 210 out.apfStatistics.droppedRas = in.droppedRas; 211 out.apfStatistics.zeroLifetimeRas = in.zeroLifetimeRas; 212 out.apfStatistics.parseErrors = in.parseErrors; 213 out.apfStatistics.programUpdates = in.programUpdates; 214 out.apfStatistics.maxProgramSize = in.maxProgramSize; 215 } 216 217 private static void setRaEvent(IpConnectivityEvent out, RaEvent in) { 218 out.raEvent = new IpConnectivityLogClass.RaEvent(); 219 out.raEvent.routerLifetime = in.routerLifetime; 220 out.raEvent.prefixValidLifetime = in.prefixValidLifetime; 221 out.raEvent.prefixPreferredLifetime = in.prefixPreferredLifetime; 222 out.raEvent.routeInfoLifetime = in.routeInfoLifetime; 223 out.raEvent.rdnssLifetime = in.rdnssLifetime; 224 out.raEvent.dnsslLifetime = in.dnsslLifetime; 225 } 226 227 private static int[] bytesToInts(byte[] in) { 228 final int[] out = new int[in.length]; 229 for (int i = 0; i < in.length; i++) { 230 out[i] = in[i] & 0xFF; 231 } 232 return out; 233 } 234 235 private static NetworkId netIdOf(int netid) { 236 final NetworkId ni = new NetworkId(); 237 ni.networkId = netid; 238 return ni; 239 } 240 241 private static int ipSupportOf(DefaultNetworkEvent in) { 242 if (in.prevIPv4 && in.prevIPv6) { 243 return IpConnectivityLogClass.DefaultNetworkEvent.DUAL; 244 } 245 if (in.prevIPv6) { 246 return IpConnectivityLogClass.DefaultNetworkEvent.IPV6; 247 } 248 if (in.prevIPv4) { 249 return IpConnectivityLogClass.DefaultNetworkEvent.IPV4; 250 } 251 return IpConnectivityLogClass.DefaultNetworkEvent.NONE; 252 } 253 254 private static boolean isBitSet(int flags, int bit) { 255 return (flags & (1 << bit)) != 0; 256 } 257 } 258
