perf(lsp): add built-in tracing support for the LSP

Cargo.toml

@@ -233,7 +233,7 @@ opentelemetry = "0.27.0"
 opentelemetry-http = "0.27.0"
 opentelemetry-otlp = { version = "0.27.0", features = ["logs", "http-proto", "http-json"] }
 opentelemetry-semantic-conventions = { version = "0.27.0", features = ["semconv_experimental"] }
-opentelemetry_sdk = "0.27.0"
+opentelemetry_sdk = { version = "0.27.0", features = ["rt-tokio", "trace"] }
 
 # crypto
 hkdf = "0.12.3"

cli/Cargo.toml

@@ -140,6 +140,10 @@ monch.workspace = true
 notify.workspace = true
 once_cell.workspace = true
 open = "5.0.1"
+opentelemetry.workspace = true
+opentelemetry-otlp.workspace = true
+opentelemetry-semantic-conventions.workspace = true
+opentelemetry_sdk.workspace = true
 p256.workspace = true
 pathdiff = "0.2.1"
 percent-encoding.workspace = true
@@ -165,8 +169,11 @@ text_lines = "=0.6.0"
 thiserror.workspace = true
 tokio.workspace = true
 tokio-util.workspace = true
+tower.workspace = true
 tower-lsp.workspace = true
-tracing = { version = "0.1", features = ["log", "default"] }
+tracing = { version = "0.1", features = ["log"] }
+tracing-opentelemetry = "0.28.0"
+tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
 twox-hash.workspace = true
 typed-arena = "=2.0.2"
 uuid = { workspace = true, features = ["serde"] }

cli/lib/util/logger.rs

@@ -91,6 +91,7 @@ pub fn init<
   .filter_module("swc_ecma_parser", log::LevelFilter::Error)
   // Suppress span lifecycle logs since they are too verbose
   .filter_module("tracing::span", log::LevelFilter::Off)
+  .filter_module("tower_lsp", log::LevelFilter::Trace)
   // for deno_compile, this is too verbose
   .filter_module("editpe", log::LevelFilter::Error)
   .format(|buf, record| {

cli/lsp/completions.rs

@@ -150,6 +150,7 @@ fn to_narrow_lsp_range(
 /// completion response, which will be valid import completions for the specific
 /// context.
 #[allow(clippy::too_many_arguments)]
+#[tracing::instrument(skip_all)]
 pub async fn get_import_completions(
   specifier: &ModuleSpecifier,
   position: &lsp::Position,

cli/lsp/config.rs

@@ -619,6 +619,9 @@ pub struct WorkspaceSettings {
 
   #[serde(default)]
   pub typescript: LanguageWorkspaceSettings,
+
+  #[serde(default)]
+  pub tracing: Option<super::trace::TracingConfigOrEnabled>,
 }
 
 impl Default for WorkspaceSettings {
@@ -645,6 +648,7 @@ impl Default for WorkspaceSettings {
       unstable: Default::default(),
       javascript: Default::default(),
       typescript: Default::default(),
+      tracing: Default::default(),
     }
   }
 }
@@ -2286,8 +2290,9 @@ mod tests {
           suggestion_actions: SuggestionActionsSettings { enabled: true },
           update_imports_on_file_move: UpdateImportsOnFileMoveOptions {
             enabled: UpdateImportsOnFileMoveEnabled::Prompt
-          }
+          },
         },
+        tracing: Default::default()
       }
     );
   }