Revert "chore: adding observers for message logging (#2800)"

This reverts commit b522865.

waku/node/waku_node.nim

@@ -225,6 +225,19 @@ proc registerRelayDefaultHandler(node: WakuNode, topic: PubsubTopic) =
   if node.wakuRelay.isSubscribed(topic):
     return
 
+  proc traceHandler(topic: PubsubTopic, msg: WakuMessage) {.async, gcsafe.} =
+    notice "waku.relay received",
+      my_peer_id = node.peerId,
+      pubsubTopic = topic,
+      msg_hash = topic.computeMessageHash(msg).to0xHex(),
+      receivedTime = getNowInNanosecondTime(),
+      payloadSizeBytes = msg.payload.len
+
+    let msgSizeKB = msg.payload.len / 1000
+
+    waku_node_messages.inc(labelValues = ["relay"])
+    waku_histogram_message_size.observe(msgSizeKB)
+
   proc filterHandler(topic: PubsubTopic, msg: WakuMessage) {.async, gcsafe.} =
     if node.wakuFilter.isNil():
       return
@@ -240,6 +253,7 @@ proc registerRelayDefaultHandler(node: WakuNode, topic: PubsubTopic) =
   let defaultHandler = proc(
       topic: PubsubTopic, msg: WakuMessage
   ): Future[void] {.async, gcsafe.} =
+    await traceHandler(topic, msg)
     await filterHandler(topic, msg)
     await archiveHandler(topic, msg)
 
@@ -376,61 +390,6 @@ proc startRelay*(node: WakuNode) {.async.} =
 
   info "relay started successfully"
 
-proc generateRelayObserver(node: WakuNode): PubSubObserver =
-  proc logMessageInfo(peer: PubSubPeer, msgs: var RPCMsg, onRecv: bool) =
-    for msg in msgs.messages:
-      let msg_id = node.wakuRelay.msgIdProvider(msg).valueOr:
-        warn "Error generating message id",
-          my_peer_id = node.peerId,
-          from_peer_id = peer.peerId,
-          topic = msg.topic,
-          error = $error
-        continue
-
-      let msg_id_short = shortLog(msg_id)
-
-      let wakuMessage = WakuMessage.decode(msg.data).valueOr:
-        warn "Error decoding to Waku Message",
-          my_peer_id = node.peerId,
-          msg_id = msg_id_short,
-          from_peer_id = peer.peerId,
-          topic = msg.topic,
-          error = $error
-        continue
-
-      let msg_hash = computeMessageHash(msg.topic, wakuMessage).to0xHex()
-
-      if onRecv:
-        notice "received relay message",
-          my_peer_id = node.peerId,
-          msg_hash = msg_hash,
-          msg_id = msg_id_short,
-          from_peer_id = peer.peerId,
-          topic = msg.topic,
-          receivedTime = getNowInNanosecondTime(),
-          payloadSizeBytes = wakuMessage.payload.len
-
-        let msgSizeKB = wakuMessage.payload.len / 1000
-        waku_node_messages.inc(labelValues = ["relay"])
-        waku_histogram_message_size.observe(msgSizeKB)
-      else:
-        notice "sent relay message",
-          my_peer_id = node.peerId,
-          msg_hash = msg_hash,
-          msg_id = msg_id_short,
-          to_peer_id = peer.peerId,
-          topic = msg.topic,
-          sentTime = getNowInNanosecondTime(),
-          payloadSizeBytes = wakuMessage.payload.len
-
-  proc onRecv(peer: PubSubPeer, msgs: var RPCMsg) =
-    logMessageInfo(peer, msgs, onRecv = true)
-
-  proc onSend(peer: PubSubPeer, msgs: var RPCMsg) =
-    discard
-
-  return PubSubObserver(onRecv: onRecv, onSend: onSend)
-
 proc mountRelay*(
     node: WakuNode,
     pubsubTopics: seq[string] = @[],
@@ -451,11 +410,6 @@ proc mountRelay*(
 
   node.wakuRelay = initRes.value
 
-  # register relay observers for logging
-  debug "Registering Relay observers"
-  let observerLogger = node.generateRelayObserver()
-  node.wakuRelay.addObserver(observerLogger)
-
   ## Add peer exchange handler
   if peerExchangeHandler.isSome():
     node.wakuRelay.parameters.enablePX = true

waku/waku_relay/protocol.nim

@@ -180,9 +180,6 @@ proc addValidator*(
 ) {.gcsafe.} =
   w.wakuValidators.add((handler, errorMessage))
 
-proc addObserver*(w: WakuRelay, observer: PubSubObserver) {.gcsafe.} =
-  procCall GossipSub(w).addObserver(observer)
-
 method start*(w: WakuRelay) {.async, base.} =
   debug "start"
   await procCall GossipSub(w).start()