Use a single SharedLog for all mdns components

Use a single SharedLog in NsdService, and making subcomponents
for DiscoveryManager/Advertiser/SocketProvider. Because each
logger has 500 maxRecords, so 2000 records in total, which take
too much memory.

Also address leftover comments in previous logging changes.

Before:
  2023-04-17T15:05:27.409895 - [Client10082-1] Register a DiscoveryListener 3 for service type:_nmt274981618._tcp.local
  2023-04-17T15:05:26.408015 - [Client10082-1] New client. useJavaBackend=true

Advertiser:
  2023-04-17T15:05:27.213023 - [testtap0] Probing finished for service 2
  2023-04-17T15:05:26.409607 - Adding service name: ^Nsd.Test|Non-#AsCiI\Characters&\ufffe テスト 測試, type: _nmt274981618._tcp, hostAddresses: , port: 12345, network: null, txtRecord:  with ID 2

DiscoveryManager:
  2023-04-17T15:05:28.227786 - [_nmt274981618._tcp.local-102] onServiceNameDiscovered: ^Nsd.Test|Non-#AsCiI\Characters&\ufffe テスト 測試
  2023-04-17T15:05:27.409104 - createServiceTypeClient for serviceType:_nmt274981618._tcp.local network:102
  2023-04-17T15:05:27.398075 - Registering listener for serviceType: _nmt274981618._tcp.local

SocketProvider:
  2023-04-17T15:05:28.292106 - Remove socket on net:102
  2023-04-17T15:05:26.441517 - Create socket on net:NetworkAsKey{ network=102 }, ifName:testtap0
  2023-04-17T15:05:26.409005 - Start monitoring sockets.

After:
Logs:
  2023-04-17T20:51:42.931769 - [MdnsDiscoveryManager._nmt682015268._tcp.local-101] onServiceNameDiscovered: Name: ^Nsd.Test|Non-#AsCiI\Characters&\ufffe テスト 測試, type: _nmt682015268._tcp.local, subtypes: , ip: [100.70.162.138], ipv6: [fe80::9c0e:d0ff:fe7d:e5aa, 2a00:79e1:abc:6f04:9c0e:d0ff:fe7d:e5aa, 2a00:79e1:abc:6f04:eb56:8e39:5e1f:1102], port: 12345, interfaceIndex: 47, network: 101, textStrings: [], textEntries: []
  2023-04-17T20:51:42.032465 - [NsdService.Client10082-1] Register a DiscoveryListener 3 for service type:_nmt682015268._tcp.local
  2023-04-17T20:51:42.026645 - [MdnsDiscoveryManager] createServiceTypeClient for type:_nmt682015268._tcp.local, net:101
  2023-04-17T20:51:41.091555 - [MdnsAdvertiser] Adding service name: ^Nsd.Test|Non-#AsCiI\Characters&\ufffe テスト 測試, type: _nmt682015268._tcp, hostAddresses: , port: 12345, network: null, txtRecord:  with ID 2
  2023-04-17T20:51:41.091037 - [MdnsSocketProvider] Start monitoring sockets.
  2023-04-17T20:51:41.089951 - [NsdService.Client10082-1] New client. useJavaBackend=true

Bug: 275004614
Test: atest FrameworksNetTests android.net.cts.NsdManagerTest
Change-Id: I1c9b7697cc95748f7fe4e6beecea217d39c56fb1

service-t/src/com/android/server/NsdService.java

@@ -142,6 +142,7 @@ public class NsdService extends INsdManager.Stub {
     public static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
     private static final long CLEANUP_DELAY_MS = 10000;
     private static final int IFACE_IDX_ANY = 0;
+    private static final SharedLog LOGGER = new SharedLog("serviceDiscovery");
 
     private final Context mContext;
     private final NsdStateMachine mNsdStateMachine;
@@ -157,7 +158,7 @@ public class NsdService extends INsdManager.Stub {
     private final MdnsSocketProvider mMdnsSocketProvider;
     @NonNull
     private final MdnsAdvertiser mAdvertiser;
-    private final SharedLog mServiceLogs = new SharedLog(TAG);
+    private final SharedLog mServiceLogs = LOGGER.forSubComponent(TAG);
     // WARNING : Accessing these values in any thread is not safe, it must only be changed in the
     // state machine thread. If change this outside state machine, it will need to introduce
     // synchronization.
@@ -1326,17 +1327,18 @@ public class NsdService extends INsdManager.Stub {
         mMDnsEventCallback = new MDnsEventCallback(mNsdStateMachine);
         mDeps = deps;
 
-        mMdnsSocketProvider = deps.makeMdnsSocketProvider(ctx, handler.getLooper());
+        mMdnsSocketProvider = deps.makeMdnsSocketProvider(ctx, handler.getLooper(),
+                LOGGER.forSubComponent("MdnsSocketProvider"));
         // Netlink monitor starts on boot, and intentionally never stopped, to ensure that all
         // address events are received.
         handler.post(mMdnsSocketProvider::startNetLinkMonitor);
         mMdnsSocketClient =
                 new MdnsMultinetworkSocketClient(handler.getLooper(), mMdnsSocketProvider);
-        mMdnsDiscoveryManager =
-                deps.makeMdnsDiscoveryManager(new ExecutorProvider(), mMdnsSocketClient);
+        mMdnsDiscoveryManager = deps.makeMdnsDiscoveryManager(new ExecutorProvider(),
+                mMdnsSocketClient, LOGGER.forSubComponent("MdnsDiscoveryManager"));
         handler.post(() -> mMdnsSocketClient.setCallback(mMdnsDiscoveryManager));
         mAdvertiser = deps.makeMdnsAdvertiser(handler.getLooper(), mMdnsSocketProvider,
-                new AdvertiserCallback());
+                new AdvertiserCallback(), LOGGER.forSubComponent("MdnsAdvertiser"));
     }
 
     /**
@@ -1390,8 +1392,9 @@ public class NsdService extends INsdManager.Stub {
          * @see MdnsDiscoveryManager
          */
         public MdnsDiscoveryManager makeMdnsDiscoveryManager(
-                ExecutorProvider executorProvider, MdnsSocketClientBase socketClient) {
-            return new MdnsDiscoveryManager(executorProvider, socketClient);
+                @NonNull ExecutorProvider executorProvider,
+                @NonNull MdnsSocketClientBase socketClient, @NonNull SharedLog sharedLog) {
+            return new MdnsDiscoveryManager(executorProvider, socketClient, sharedLog);
         }
 
         /**
@@ -1399,15 +1402,16 @@ public class NsdService extends INsdManager.Stub {
          */
         public MdnsAdvertiser makeMdnsAdvertiser(
                 @NonNull Looper looper, @NonNull MdnsSocketProvider socketProvider,
-                @NonNull MdnsAdvertiser.AdvertiserCallback cb) {
-            return new MdnsAdvertiser(looper, socketProvider, cb);
+                @NonNull MdnsAdvertiser.AdvertiserCallback cb, @NonNull SharedLog sharedLog) {
+            return new MdnsAdvertiser(looper, socketProvider, cb, sharedLog);
         }
 
         /**
          * @see MdnsSocketProvider
          */
-        public MdnsSocketProvider makeMdnsSocketProvider(Context context, Looper looper) {
-            return new MdnsSocketProvider(context, looper);
+        public MdnsSocketProvider makeMdnsSocketProvider(@NonNull Context context,
+                @NonNull Looper looper, @NonNull SharedLog sharedLog) {
+            return new MdnsSocketProvider(context, looper, sharedLog);
         }
     }
 
@@ -1769,30 +1773,10 @@ public class NsdService extends INsdManager.Stub {
 
         // Dump service and clients logs
         pw.println();
+        pw.println("Logs:");
         pw.increaseIndent();
         mServiceLogs.reverseDump(pw);
         pw.decreaseIndent();
-
-        // Dump advertiser related logs
-        pw.println();
-        pw.println("Advertiser:");
-        pw.increaseIndent();
-        mAdvertiser.dump(pw);
-        pw.decreaseIndent();
-
-        // Dump discoverymanager related logs
-        pw.println();
-        pw.println("DiscoveryManager:");
-        pw.increaseIndent();
-        mMdnsDiscoveryManager.dump(pw);
-        pw.decreaseIndent();
-
-        // Dump socketprovider related logs
-        pw.println();
-        pw.println("SocketProvider:");
-        pw.increaseIndent();
-        mMdnsSocketProvider.dump(pw);
-        pw.decreaseIndent();
     }
 
     private abstract static class ClientRequest {