Downgrade routine peer-interaction logs from DEBUG to TRACE

Discovery v5 handlers log expected peer-interaction failures (bad
packets, failed handshakes, policy-rejected peers, session timeouts)
at DEBUG level, producing ~114 messages/minute on mainnet and making
--logging=DEBUG output hard to read.

Demote 16 such LOG.debug() calls across 9 files to LOG.trace(). The
messages remain available at TRACE for protocol debugging; no
LOG.warn/error/info calls are touched. Two additional debug calls in
NodeSession#cancelAllRequests are intentionally left at DEBUG because
they signal potential local-code issues (unexpected cleanup
exception, possible race on requestIdStatuses) rather than routine
peer behavior.

Refs: besu-eth/besu#9691

Author: parthdagia05

src/main/java/org/ethereum/beacon/discovery/pipeline/handler/BadPacketHandler.java

@@ -26,7 +26,7 @@ public void handle(Envelope envelope) {
                 "Envelope %s in BadPacketHandler, requirements are satisfied!",
                 envelope.getIdString()));
 
-    LOG.debug(
+    LOG.trace(
         () ->
             String.format(
                 "Bad packet: %s in envelope #%s: %s",

src/main/java/org/ethereum/beacon/discovery/pipeline/handler/HandshakeMessagePacketHandler.java

@@ -70,7 +70,7 @@ public void handle(Envelope envelope) {
     try {
 
       if (session.getWhoAreYouChallenge().isEmpty()) {
-        LOG.debug(String.format("Outbound WhoAreYou challenge not found for session %s", session));
+        LOG.trace(String.format("Outbound WhoAreYou challenge not found for session %s", session));
         markHandshakeAsFailed(envelope, session);
         return;
       }
@@ -90,7 +90,7 @@ public void handle(Envelope envelope) {
 
       Optional<NodeRecord> enr = packet.getHeader().getAuthData().getNodeRecord(nodeRecordFactory);
       if (!enr.map(NodeRecord::isValid).orElse(true)) {
-        LOG.debug(
+        LOG.trace(
             String.format(
                 "Node record not valid for message [%s] from node %s in status %s",
                 packet, session.getNodeRecord(), session.getState()));
@@ -100,15 +100,15 @@ public void handle(Envelope envelope) {
       final Optional<NodeRecord> nodeRecordMaybe = session.getNodeRecord().or(() -> enr);
       // Check the node record matches the ID we expect
       if (!nodeRecordMaybe.map(r -> r.getNodeId().equals(session.getNodeId())).orElse(false)) {
-        LOG.debug(
+        LOG.trace(
             "Incorrect node ID for message [{}] from node {} in status {}",
             packet,
             session.getNodeRecord(),
             session.getState());
         markHandshakeAsFailed(envelope, session);
         return;
       } else if (!enr.map(addressAccessPolicy::allow).orElse(true)) {
-        LOG.debug(
+        LOG.trace(
             "Rejecting handshake from node {} because the ENR was disallowed: {}",
             session.getNodeRecord(),
             enr);
@@ -127,7 +127,7 @@ public void handle(Envelope envelope) {
                   (Bytes) nodeRecord.get(EnrField.PKEY_SECP256K1));
 
       if (!idNonceVerifyResult) {
-        LOG.debug(
+        LOG.trace(
             String.format(
                 "ID signature not valid for message [%s] from node %s in status %s",
                 packet, session.getNodeRecord(), session.getState()));
@@ -145,7 +145,7 @@ public void handle(Envelope envelope) {
       enr.ifPresent(session::onNodeRecordReceived);
       NextTaskHandler.tryToSendAwaitTaskIfAny(session, outgoingPipeline, scheduler);
     } catch (Exception ex) {
-      LOG.debug(
+      LOG.trace(
           String.format(
               "Failed to read message [%s] from node %s in status %s",
               packet, session.getNodeRecord(), session.getState()),

src/main/java/org/ethereum/beacon/discovery/pipeline/handler/MessagePacketHandler.java

@@ -69,7 +69,7 @@ public void handle(Envelope envelope) {
           String.format(
               "Failed to read message [%s] from node %s in status %s",
               packet, session.getNodeRecord(), session.getState());
-      LOG.debug(error, ex);
+      LOG.trace(error, ex);
       envelope.remove(Field.PACKET_MESSAGE);
       envelope.put(Field.BAD_PACKET, packet);
     } catch (Throwable t) {

src/main/java/org/ethereum/beacon/discovery/pipeline/handler/OutgoingParcelHandler.java

@@ -47,7 +47,7 @@ public void handle(Envelope envelope) {
       if (parcel.getPacket().getBytes().size() > IncomingDataPacker.MAX_PACKET_SIZE) {
         LOG.error("Outgoing packet is too large, dropping it: {}", parcel.getPacket());
       } else if (!addressAccessPolicy.allow(parcel.getDestination())) {
-        LOG.debug(
+        LOG.trace(
             "Dropping outgoing packet to disallowed destination: {}", parcel.getDestination());
       } else {
         outgoingSink.next(parcel);

src/main/java/org/ethereum/beacon/discovery/pipeline/handler/PacketSourceFilter.java

@@ -30,7 +30,7 @@ public void handle(final Envelope envelope) {
     final InetSocketAddress sender = envelope.get(Field.REMOTE_SENDER);
     if (!addressAccessPolicy.allow(sender)) {
       envelope.remove(Field.INCOMING);
-      LOG.debug("Ignoring message from disallowed source {}", sender);
+      LOG.trace("Ignoring message from disallowed source {}", sender);
     }
   }
 }

src/main/java/org/ethereum/beacon/discovery/pipeline/handler/UnauthorizedMessagePacketHandler.java

@@ -61,7 +61,7 @@ public void handle(Envelope envelope) {
           String.format(
               "Failed to read message [%s] from node %s in status %s",
               unknownPacket, session.getNodeRecord(), session.getState());
-      LOG.debug(error, ex);
+      LOG.trace(error, ex);
       envelope.put(Field.BAD_PACKET, unknownPacket);
       envelope.put(Field.BAD_EXCEPTION, ex);
     }

src/main/java/org/ethereum/beacon/discovery/pipeline/handler/WhoAreYouPacketHandler.java

@@ -68,7 +68,7 @@ public void handle(final Envelope envelope) {
       boolean nonceMatches =
           session.getLastOutboundNonce().map(whoAreYouNonce::equals).orElse(false);
       if (!nonceMatches) {
-        LOG.debug(
+        LOG.trace(
             "Verification not passed for message [{}] from node {} in status {}",
             whoAreYouPacket,
             nodeRecord,

src/main/java/org/ethereum/beacon/discovery/pipeline/info/FindNodeResponseHandler.java

@@ -73,7 +73,7 @@ public synchronized List<NodeRecord> getFoundNodes() {
 
   private boolean isValid(final NodeRecord record) {
     if (!record.isValid()) {
-      LOG.debug("Rejecting invalid node record {}", record);
+      LOG.trace("Rejecting invalid node record {}", record);
       return false;
     }
     return true;
@@ -82,7 +82,7 @@ private boolean isValid(final NodeRecord record) {
   private boolean hasCorrectDistance(final NodeSession session, final NodeRecord nodeRecordV5) {
     final int actualDistance = Functions.logDistance(nodeRecordV5.getNodeId(), session.getNodeId());
     if (!distances.contains(actualDistance)) {
-      LOG.debug(
+      LOG.trace(
           "Rejecting node record {} received from {} because distance was not in {}.",
           nodeRecordV5.getNodeId(),
           session.getNodeId(),

src/main/java/org/ethereum/beacon/discovery/schema/NodeSession.java

@@ -234,7 +234,7 @@ private synchronized void resetHandshakeState() {
 
   /** Updates request info. Thread-safe. */
   public synchronized void cancelAllRequests(final String message) {
-    LOG.debug(() -> String.format("Cancelling all requests in session %s", this));
+    LOG.trace(() -> String.format("Cancelling all requests in session %s", this));
     final Set<Bytes> requestIdsCopy = new HashSet<>(requestIdStatuses.keySet());
     requestIdsCopy.forEach(
         requestId -> {