Add option to dump cookieTagMap in base64 format
This is a preparation for testing SkDestroyListener that removes
cookieTagMap entry when socket is destroyed.
Bug: 217624062
Test: atest NetworkStatsServiceTest
Change-Id: Ia1091130101360e37557e6f00efe0f736134de05
diff --git a/service-t/src/com/android/server/net/NetworkStatsService.java b/service-t/src/com/android/server/net/NetworkStatsService.java
index 96c615b..c4ffdec 100644
--- a/service-t/src/com/android/server/net/NetworkStatsService.java
+++ b/service-t/src/com/android/server/net/NetworkStatsService.java
@@ -154,6 +154,7 @@
import com.android.net.module.util.BaseNetdUnsolicitedEventListener;
import com.android.net.module.util.BestClock;
import com.android.net.module.util.BinderUtils;
+import com.android.net.module.util.BpfDump;
import com.android.net.module.util.BpfMap;
import com.android.net.module.util.CollectionUtils;
import com.android.net.module.util.DeviceConfigUtils;
@@ -2532,6 +2533,7 @@
// usage: dumpsys netstats --full --uid --tag --poll --checkin
final boolean poll = argSet.contains("--poll") || argSet.contains("poll");
final boolean checkin = argSet.contains("--checkin");
+ final boolean bpfRawMap = argSet.contains("--bpfRawMap");
final boolean fullHistory = argSet.contains("--full") || argSet.contains("full");
final boolean includeUid = argSet.contains("--uid") || argSet.contains("detail");
final boolean includeTag = argSet.contains("--tag") || argSet.contains("detail");
@@ -2573,6 +2575,11 @@
return;
}
+ if (bpfRawMap) {
+ dumpRawMapLocked(pw, args);
+ return;
+ }
+
pw.println("Directory:");
pw.increaseIndent();
pw.println(mStatsDir);
@@ -2743,6 +2750,38 @@
proto.flush();
}
+ private <K extends Struct, V extends Struct> void dumpRawMap(IBpfMap<K, V> map,
+ IndentingPrintWriter pw) throws ErrnoException {
+ if (map == null) {
+ pw.println("Map is null");
+ return;
+ }
+ if (map.isEmpty()) {
+ pw.println("No entries");
+ return;
+ }
+ // If there is a concurrent entry deletion, value could be null. http://b/220084230.
+ // Also, map.forEach could restart iteration from the beginning and dump could contain
+ // duplicated entries. User of this dump needs to take care of the duplicated entries.
+ map.forEach((k, v) -> {
+ if (v != null) {
+ pw.println(BpfDump.toBase64EncodedString(k, v));
+ }
+ });
+ }
+
+ @GuardedBy("mStatsLock")
+ private void dumpRawMapLocked(final IndentingPrintWriter pw, final String[] args) {
+ if (CollectionUtils.contains(args, "--cookieTagMap")) {
+ try {
+ dumpRawMap(mCookieTagMap, pw);
+ } catch (ErrnoException e) {
+ pw.println("Error dumping cookieTag map: " + e);
+ }
+ return;
+ }
+ }
+
private static void dumpInterfaces(ProtoOutputStream proto, long tag,
ArrayMap<String, NetworkIdentitySet> ifaces) {
for (int i = 0; i < ifaces.size(); i++) {
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
index f64e35b..153f121 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -122,6 +122,7 @@
import android.system.ErrnoException;
import android.telephony.TelephonyManager;
import android.util.ArrayMap;
+import android.util.Pair;
import androidx.annotation.Nullable;
import androidx.test.InstrumentationRegistry;
@@ -130,8 +131,10 @@
import com.android.connectivity.resources.R;
import com.android.internal.util.FileRotator;
import com.android.internal.util.test.BroadcastInterceptingContext;
+import com.android.net.module.util.BpfDump;
import com.android.net.module.util.IBpfMap;
import com.android.net.module.util.LocationPermissionChecker;
+import com.android.net.module.util.Struct;
import com.android.net.module.util.Struct.U32;
import com.android.net.module.util.Struct.U8;
import com.android.net.module.util.bpf.CookieTagMapKey;
@@ -168,6 +171,7 @@
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoUnit;
+import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
@@ -212,6 +216,11 @@
private static final long WAIT_TIMEOUT = 2 * 1000; // 2 secs
private static final int INVALID_TYPE = -1;
+ private static final String DUMPSYS_BPF_RAW_MAP = "--bpfRawMap";
+ private static final String DUMPSYS_COOKIE_TAG_MAP = "--cookieTagMap";
+ private static final String LINE_DELIMITER = "\\n";
+
+
private long mElapsedRealtime;
private File mStatsDir;
@@ -2333,12 +2342,27 @@
dump.contains(message));
}
- private String getDump() {
+ private String getDump(final String[] args) {
final StringWriter sw = new StringWriter();
- mService.dump(new FileDescriptor(), new PrintWriter(sw), new String[]{});
+ mService.dump(new FileDescriptor(), new PrintWriter(sw), args);
return sw.toString();
}
+ private String getDump() {
+ return getDump(new String[]{});
+ }
+
+ private <K extends Struct, V extends Struct> Map<K, V> parseBpfRawMap(
+ Class<K> keyClass, Class<V> valueClass, String dumpStr) {
+ final HashMap<K, V> map = new HashMap<>();
+ for (final String line : dumpStr.split(LINE_DELIMITER)) {
+ final Pair<K, V> keyValue =
+ BpfDump.fromBase64EncodedString(keyClass, valueClass, line.trim());
+ map.put(keyValue.first, keyValue.second);
+ }
+ return map;
+ }
+
@Test
public void testDumpCookieTagMap() throws ErrnoException {
initBpfMapsWithTagData(UID_BLUE);
@@ -2350,6 +2374,23 @@
}
@Test
+ public void testDumpCookieTagMapBpfRawMap() throws ErrnoException {
+ initBpfMapsWithTagData(UID_BLUE);
+
+ final String dump = getDump(new String[]{DUMPSYS_BPF_RAW_MAP, DUMPSYS_COOKIE_TAG_MAP});
+ Map<CookieTagMapKey, CookieTagMapValue> cookieTagMap = parseBpfRawMap(
+ CookieTagMapKey.class, CookieTagMapValue.class, dump);
+
+ final CookieTagMapValue val1 = cookieTagMap.get(new CookieTagMapKey(2002));
+ assertEquals(1, val1.tag);
+ assertEquals(1002, val1.uid);
+
+ final CookieTagMapValue val2 = cookieTagMap.get(new CookieTagMapKey(3002));
+ assertEquals(2, val2.tag);
+ assertEquals(1002, val2.uid);
+ }
+
+ @Test
public void testDumpUidCounterSetMap() throws ErrnoException {
initBpfMapsWithTagData(UID_BLUE);