LSP: Add request ID to request timeout message (#6010)

This improves error logging for requests - without the ID it's hard to
know which request is the one that timed out.

helix-lsp/src/client.rs

@@ -201,7 +201,7 @@ impl Client {
 
             let request = jsonrpc::MethodCall {
                 jsonrpc: Some(jsonrpc::Version::V2),
-                id,
+                id: id.clone(),
                 method: R::METHOD.to_string(),
                 params: Self::value_into_params(params),
             };
@@ -218,7 +218,7 @@ impl Client {
             // TODO: delay other calls until initialize success
             timeout(Duration::from_secs(timeout_secs), rx.recv())
                 .await
-                .map_err(|_| Error::Timeout)? // return Timeout
+                .map_err(|_| Error::Timeout(id))? // return Timeout
                 .ok_or(Error::StreamClosed)?
         }
     }

helix-lsp/src/jsonrpc.rs

@@ -108,6 +108,16 @@ pub enum Id {
     Str(String),
 }
 
+impl std::fmt::Display for Id {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Id::Null => f.write_str("null"),
+            Id::Num(num) => write!(f, "{}", num),
+            Id::Str(string) => f.write_str(string),
+        }
+    }
+}
+
 /// Protocol Version
 #[derive(Debug, PartialEq, Eq, Clone, Copy, Hash)]
 pub enum Version {

helix-lsp/src/lib.rs

@@ -34,8 +34,8 @@ pub enum Error {
     Parse(#[from] serde_json::Error),
     #[error("IO Error: {0}")]
     IO(#[from] std::io::Error),
-    #[error("request timed out")]
-    Timeout,
+    #[error("request {0} timed out")]
+    Timeout(jsonrpc::Id),
     #[error("server closed the stream")]
     StreamClosed,
     #[error("Unhandled")]