| /* |
| * 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.server.connectivity; |
| |
| import android.net.ConnectivityManager.NetworkCallback; |
| import android.net.ConnectivityManager; |
| import android.net.Network; |
| import android.net.metrics.DnsEvent; |
| import android.net.metrics.INetdEventListener; |
| import android.net.metrics.IpConnectivityLog; |
| |
| import junit.framework.TestCase; |
| import org.junit.Before; |
| import org.junit.Test; |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import org.mockito.ArgumentCaptor; |
| import org.mockito.Mock; |
| import org.mockito.Mockito; |
| import org.mockito.MockitoAnnotations; |
| import static org.mockito.Mockito.any; |
| import static org.mockito.Mockito.anyInt; |
| import static org.mockito.Mockito.eq; |
| import static org.mockito.Mockito.timeout; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| |
| import java.io.FileOutputStream; |
| import java.io.PrintWriter; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.OptionalInt; |
| import java.util.stream.IntStream; |
| |
| public class NetdEventListenerServiceTest extends TestCase { |
| |
| // TODO: read from NetdEventListenerService after this constant is read from system property |
| static final int BATCH_SIZE = 100; |
| static final int EVENT_TYPE = INetdEventListener.EVENT_GETADDRINFO; |
| // TODO: read from INetdEventListener |
| static final int RETURN_CODE = 1; |
| |
| static final byte[] EVENT_TYPES = new byte[BATCH_SIZE]; |
| static final byte[] RETURN_CODES = new byte[BATCH_SIZE]; |
| static final int[] LATENCIES = new int[BATCH_SIZE]; |
| static { |
| for (int i = 0; i < BATCH_SIZE; i++) { |
| EVENT_TYPES[i] = EVENT_TYPE; |
| RETURN_CODES[i] = RETURN_CODE; |
| LATENCIES[i] = i; |
| } |
| } |
| |
| NetdEventListenerService mNetdEventListenerService; |
| |
| @Mock ConnectivityManager mCm; |
| @Mock IpConnectivityLog mLog; |
| ArgumentCaptor<NetworkCallback> mCallbackCaptor; |
| ArgumentCaptor<DnsEvent> mEvCaptor; |
| |
| public void setUp() { |
| MockitoAnnotations.initMocks(this); |
| mCallbackCaptor = ArgumentCaptor.forClass(NetworkCallback.class); |
| mEvCaptor = ArgumentCaptor.forClass(DnsEvent.class); |
| mNetdEventListenerService = new NetdEventListenerService(mCm, mLog); |
| |
| verify(mCm, times(1)).registerNetworkCallback(any(), mCallbackCaptor.capture()); |
| } |
| |
| public void testOneBatch() throws Exception { |
| log(105, LATENCIES); |
| log(106, Arrays.copyOf(LATENCIES, BATCH_SIZE - 1)); // one lookup short of a batch event |
| |
| verifyLoggedEvents(new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES)); |
| |
| log(106, Arrays.copyOfRange(LATENCIES, BATCH_SIZE - 1, BATCH_SIZE)); |
| |
| mEvCaptor = ArgumentCaptor.forClass(DnsEvent.class); // reset argument captor |
| verifyLoggedEvents( |
| new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES), |
| new DnsEvent(106, EVENT_TYPES, RETURN_CODES, LATENCIES)); |
| } |
| |
| public void testSeveralBatches() throws Exception { |
| log(105, LATENCIES); |
| log(106, LATENCIES); |
| log(105, LATENCIES); |
| log(107, LATENCIES); |
| |
| verifyLoggedEvents( |
| new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES), |
| new DnsEvent(106, EVENT_TYPES, RETURN_CODES, LATENCIES), |
| new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES), |
| new DnsEvent(107, EVENT_TYPES, RETURN_CODES, LATENCIES)); |
| } |
| |
| public void testBatchAndNetworkLost() throws Exception { |
| byte[] eventTypes = Arrays.copyOf(EVENT_TYPES, 20); |
| byte[] returnCodes = Arrays.copyOf(RETURN_CODES, 20); |
| int[] latencies = Arrays.copyOf(LATENCIES, 20); |
| |
| log(105, LATENCIES); |
| log(105, latencies); |
| mCallbackCaptor.getValue().onLost(new Network(105)); |
| log(105, LATENCIES); |
| |
| verifyLoggedEvents( |
| new DnsEvent(105, eventTypes, returnCodes, latencies), |
| new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES), |
| new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES)); |
| } |
| |
| public void testConcurrentBatchesAndDumps() throws Exception { |
| final long stop = System.currentTimeMillis() + 100; |
| final PrintWriter pw = new PrintWriter(new FileOutputStream("/dev/null")); |
| new Thread() { |
| public void run() { |
| while (System.currentTimeMillis() < stop) { |
| mNetdEventListenerService.dump(pw); |
| } |
| } |
| }.start(); |
| |
| logAsync(105, LATENCIES); |
| logAsync(106, LATENCIES); |
| logAsync(107, LATENCIES); |
| |
| verifyLoggedEvents(500, |
| new DnsEvent(105, EVENT_TYPES, RETURN_CODES, LATENCIES), |
| new DnsEvent(106, EVENT_TYPES, RETURN_CODES, LATENCIES), |
| new DnsEvent(107, EVENT_TYPES, RETURN_CODES, LATENCIES)); |
| } |
| |
| public void testConcurrentBatchesAndNetworkLoss() throws Exception { |
| logAsync(105, LATENCIES); |
| Thread.sleep(10L); |
| // call onLost() asynchronously to logAsync's onDnsEvent() calls. |
| mCallbackCaptor.getValue().onLost(new Network(105)); |
| |
| // do not verify unpredictable batch |
| verify(mLog, timeout(500).times(1)).log(any()); |
| } |
| |
| void log(int netId, int[] latencies) { |
| for (int l : latencies) { |
| mNetdEventListenerService.onDnsEvent(netId, EVENT_TYPE, RETURN_CODE, l); |
| } |
| } |
| |
| void logAsync(int netId, int[] latencies) { |
| new Thread() { |
| public void run() { |
| log(netId, latencies); |
| } |
| }.start(); |
| } |
| |
| void verifyLoggedEvents(DnsEvent... expected) { |
| verifyLoggedEvents(0, expected); |
| } |
| |
| void verifyLoggedEvents(int wait, DnsEvent... expectedEvents) { |
| verify(mLog, timeout(wait).times(expectedEvents.length)).log(mEvCaptor.capture()); |
| for (DnsEvent got : mEvCaptor.getAllValues()) { |
| OptionalInt index = IntStream.range(0, expectedEvents.length) |
| .filter(i -> eventsEqual(expectedEvents[i], got)) |
| .findFirst(); |
| // Don't match same expected event more than once. |
| index.ifPresent(i -> expectedEvents[i] = null); |
| assertTrue(index.isPresent()); |
| } |
| } |
| |
| /** equality function for DnsEvent to avoid overriding equals() and hashCode(). */ |
| static boolean eventsEqual(DnsEvent expected, DnsEvent got) { |
| return (expected == got) || ((expected != null) && (got != null) |
| && (expected.netId == got.netId) |
| && Arrays.equals(expected.eventTypes, got.eventTypes) |
| && Arrays.equals(expected.returnCodes, got.returnCodes) |
| && Arrays.equals(expected.latenciesMs, got.latenciesMs)); |
| } |
| } |