LineageOS/android_packages_modules_Connectivity
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Connectivity metrics: collect NFLOG wakeup events

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This patch stores NFLOG packet wakeup events sent by Netd to the system
server into a ring buffer inside NetdEventListenerService. The content
of this buffer is accessible by $ dumpsys connmetrics or $ dumpsys
connmetrics list, and is added to bug reports.

The wakeup event buffer stores currently uid and timestamps.

Bug: 34901696
Bug: 62179647
Test: runtest frameworks-net, new unit tests
Change-Id: Ie8db6f8572b1a929a20398d8dc03e189bc488382
This commit is contained in:
Hugo Benichi
2017-09-04 13:24:43 +09:00
parent 71449be2a7
commit 802e27811c
1 changed files with 58 additions and 0 deletions
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58
tests/net/java/com/android/server/connectivity/NetdEventListenerServiceTest.java
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@@ -19,6 +19,7 @@ package com.android.server.connectivity;
import static android.net.metrics.INetdEventListener.EVENT_GETADDRINFO;
import static android.net.metrics.INetdEventListener.EVENT_GETHOSTBYNAME;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.mock;
@@ -74,6 +75,52 @@ public class NetdEventListenerServiceTest {
mNetdEventListenerService = new NetdEventListenerService(mCm);
}
@Test
public void testWakeupEventLogging() throws Exception {
final int BUFFER_LENGTH = NetdEventListenerService.WAKEUP_EVENT_BUFFER_LENGTH;
// Assert no events
String[] events1 = listNetdEvent();
assertEquals(new String[]{""}, events1);
long now = System.currentTimeMillis();
String prefix = "iface:wlan0";
int[] uids = { 10001, 10002, 10004, 1000, 10052, 10023, 10002, 10123, 10004 };
for (int uid : uids) {
mNetdEventListenerService.onWakeupEvent(prefix, uid, uid, now);
}
String[] events2 = listNetdEvent();
assertEquals(uids.length, events2.length);
for (int i = 0; i < uids.length; i++) {
String got = events2[i];
assertContains(got, "wlan0");
assertContains(got, "uid: " + uids[i]);
}
int uid = 20000;
for (int i = 0; i < BUFFER_LENGTH * 2; i++) {
long ts = now + 10;
mNetdEventListenerService.onWakeupEvent(prefix, uid, uid, ts);
}
// Assert there are BUFFER_LENGTH events all with uid 20000
String[] events3 = listNetdEvent();
assertEquals(BUFFER_LENGTH, events3.length);
for (String got : events3) {
assertContains(got, "wlan0");
assertContains(got, "uid: " + uid);
}
uid = 45678;
mNetdEventListenerService.onWakeupEvent(prefix, uid, uid, now);
String[] events4 = listNetdEvent();
String lastEvent = events4[events4.length - 1];
assertContains(lastEvent, "wlan0");
assertContains(lastEvent, "uid: " + uid);
}
@Test
public void testDnsLogging() throws Exception {
asyncDump(100);
@@ -329,4 +376,15 @@ public class NetdEventListenerServiceTest {
}
return log.toString();
}
String[] listNetdEvent() throws Exception {
StringWriter buffer = new StringWriter();
PrintWriter writer = new PrintWriter(buffer);
mNetdEventListenerService.list(writer);
return buffer.toString().split("\\n");
}
static void assertContains(String got, String want) {
assertTrue(got + " did not contain \"" + want + "\"", got.contains(want));
}
}