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feat(app-server, core): add more spans (#14479)

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## Description

This PR expands tracing coverage across app-server thread startup, core
session initialization, and the Responses transport layer. It also gives
core dispatch spans stable operation-specific names so traces are easier
to follow than the old generic `submission_dispatch` spans.

Also use `fmt::Display` for types that we serialize in traces so we send
strings instead of rust types
This commit is contained in:
Owen Lin
2026-03-13 13:16:33 -07:00
committed by GitHub
parent 914f7c7317
commit 014e19510d
17 changed files with 473 additions and 88 deletions
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36
codex-rs/app-server/src/codex_message_processor.rs
View File

@@ -1999,6 +1999,7 @@ impl CodexMessageProcessor {
})
.collect()
};
let core_dynamic_tool_count = core_dynamic_tools.len();
match listener_task_context
.thread_manager
@@ -2009,6 +2010,12 @@ impl CodexMessageProcessor {
service_name,
request_trace,
)
.instrument(tracing::info_span!(
"app_server.thread_start.create_thread",
otel.name = "app_server.thread_start.create_thread",
thread_start.dynamic_tool_count = core_dynamic_tool_count,
thread_start.persist_extended_history = persist_extended_history,
))
.await
{
Ok(new_conv) => {
@@ -2018,7 +2025,13 @@ impl CodexMessageProcessor {
session_configured,
..
} = new_conv;
let config_snapshot = thread.config_snapshot().await;
let config_snapshot = thread
.config_snapshot()
.instrument(tracing::info_span!(
"app_server.thread_start.config_snapshot",
otel.name = "app_server.thread_start.config_snapshot",
))
.await;
let mut thread = build_thread_from_snapshot(
thread_id,
&config_snapshot,
@@ -2034,6 +2047,11 @@ impl CodexMessageProcessor {
experimental_raw_events,
ApiVersion::V2,
)
.instrument(tracing::info_span!(
"app_server.thread_start.attach_listener",
otel.name = "app_server.thread_start.attach_listener",
thread_start.experimental_raw_events = experimental_raw_events,
))
.await,
thread_id,
request_id.connection_id,
@@ -2043,12 +2061,20 @@ impl CodexMessageProcessor {
listener_task_context
.thread_watch_manager
.upsert_thread_silently(thread.clone())
.instrument(tracing::info_span!(
"app_server.thread_start.upsert_thread",
otel.name = "app_server.thread_start.upsert_thread",
))
.await;
thread.status = resolve_thread_status(
listener_task_context
.thread_watch_manager
.loaded_status_for_thread(&thread.id)
.instrument(tracing::info_span!(
"app_server.thread_start.resolve_status",
otel.name = "app_server.thread_start.resolve_status",
))
.await,
false,
);
@@ -2067,12 +2093,20 @@ impl CodexMessageProcessor {
listener_task_context
.outgoing
.send_response(request_id, response)
.instrument(tracing::info_span!(
"app_server.thread_start.send_response",
otel.name = "app_server.thread_start.send_response",
))
.await;
let notif = ThreadStartedNotification { thread };
listener_task_context
.outgoing
.send_server_notification(ServerNotification::ThreadStarted(notif))
.instrument(tracing::info_span!(
"app_server.thread_start.notify_started",
otel.name = "app_server.thread_start.notify_started",
))
.await;
}
Err(err) => {