From 75ace42366b9dbe7230f94310564662c496a69a0 Mon Sep 17 00:00:00 2001
From: Alexandru Vasile <alexandru.vasile@parity.io>
Date: Wed, 3 Apr 2024 19:21:03 +0300
Subject: [PATCH] lightclient: Trim response for logs

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
---
 lightclient/src/background.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lightclient/src/background.rs b/lightclient/src/background.rs
index 0ae565b1de..d8c4648ddb 100644
--- a/lightclient/src/background.rs
+++ b/lightclient/src/background.rs
@@ -242,6 +242,12 @@ struct ActiveSubscription {
     unsubscribe_method: String,
 }
 
+fn trim_response(response: &str) -> &str {
+    const MAX_RESPONSE_SIZE: usize = 256;
+    let len = std::cmp::min(response.len(), MAX_RESPONSE_SIZE);
+    &response[..len]
+}
+
 impl<TPlatform: PlatformRef, TChain> BackgroundTaskData<TPlatform, TChain> {
     /// Fetch and increment the request ID.
     fn next_id(&mut self) -> usize {
@@ -359,7 +365,7 @@ impl<TPlatform: PlatformRef, TChain> BackgroundTaskData<TPlatform, TChain> {
     /// Parse the response received from the light client and sent it to the appropriate user.
     fn handle_rpc_response(&mut self, response: String) {
         let chain_id = self.chain_id;
-        tracing::trace!(target: LOG_TARGET, "Received from smoldot response='{response}' chain={chain_id:?}");
+        tracing::trace!(target: LOG_TARGET, "Received from smoldot response='{}' chain={chain_id:?}", trim_response(&response));
 
         match RpcResponse::from_str(&response) {
             Ok(RpcResponse::Method { id, result }) => {