From 815416cd62d35b47b3835b700b2ee6d1c230e292 Mon Sep 17 00:00:00 2001 From: Henry Park Date: Wed, 25 Mar 2026 11:10:08 -0700 Subject: [PATCH] Handle empty single-message REPL exits --- src/agent/agent_loop.rs | 62 ++++++++++++++++++++++++++++++++++++++--- src/channels/repl.rs | 12 ++++++-- 2 files changed, 68 insertions(+), 6 deletions(-) diff --git a/src/agent/agent_loop.rs b/src/agent/agent_loop.rs index f51a8db1..ecd55e22 100644 --- a/src/agent/agent_loop.rs +++ b/src/agent/agent_loop.rs @@ -16,6 +16,7 @@ use crate::agent::context_monitor::ContextMonitor; use crate::agent::heartbeat::spawn_heartbeat; use crate::agent::routine_engine::{RoutineEngine, spawn_cron_ticker}; use crate::agent::self_repair::{DefaultSelfRepair, RepairResult, SelfRepair}; +use crate::agent::session::ThreadState; use crate::agent::session_manager::SessionManager; use crate::agent::submission::{Submission, SubmissionParser, SubmissionResult}; use crate::agent::{HeartbeatConfig as AgentHeartbeatConfig, Router, Scheduler, SchedulerDeps}; @@ -84,6 +85,15 @@ fn resolve_owner_scope_notification_user( trimmed_option(explicit_user).or_else(|| trimmed_option(owner_fallback)) } +fn is_single_message_repl(message: &IncomingMessage) -> bool { + message.channel == "repl" + && message + .metadata + .get("single_message_mode") + .and_then(|value| value.as_bool()) + .unwrap_or(false) +} + async fn resolve_channel_notification_user( extension_manager: Option<&Arc>, channel: Option<&str>, @@ -1150,10 +1160,16 @@ impl Agent { fired, "Consumed inbound user message with matching event-triggered routine(s)" ); - return Ok(Some(String::new())); + return if is_single_message_repl(message) { + Ok(None) + } else { + Ok(Some(String::new())) + }; } } + let session_for_empty_exit = Arc::clone(&session); + // Process based on submission type let result = match submission { Submission::UserInput { content } => { @@ -1263,7 +1279,13 @@ impl Agent { SubmissionResult::Error { message } => { Ok(Some(format!("Error: {}", message))) } - _ => Ok(Some(String::new())), + _ => { + if is_single_message_repl(message) { + Ok(None) + } else { + Ok(Some(String::new())) + } + } }; } // Authorization checks (including restart channel check) are enforced in handle_system_command @@ -1325,7 +1347,26 @@ impl Agent { Ok(Some(content)) } } - SubmissionResult::Ok { message } => Ok(message), + SubmissionResult::Ok { + message: output_message, + } => { + let should_exit = + if output_message.as_deref() == Some("") && is_single_message_repl(message) { + let sess = session_for_empty_exit.lock().await; + sess.threads + .get(&thread_id) + .map(|thread| thread.state != ThreadState::AwaitingApproval) + .unwrap_or(true) + } else { + false + }; + + if should_exit { + Ok(None) + } else { + Ok(output_message) + } + } SubmissionResult::Error { message } => Ok(Some(format!("Error: {}", message))), SubmissionResult::Interrupted => Ok(Some("Interrupted.".into())), SubmissionResult::NeedApproval { .. } => { @@ -1341,7 +1382,7 @@ impl Agent { #[cfg(test)] mod tests { use super::{ - chat_tool_execution_metadata, resolve_routine_notification_user, + chat_tool_execution_metadata, is_single_message_repl, resolve_routine_notification_user, should_fallback_routine_notification, truncate_for_preview, }; use crate::channels::IncomingMessage; @@ -1503,4 +1544,17 @@ mod tests { assert!(should_fallback_routine_notification(&error)); // safety: test-only assertion } + + #[test] + fn single_message_repl_detection_requires_repl_channel_and_metadata_flag() { + let repl = IncomingMessage::new("repl", "owner-scope", "hello") + .with_metadata(serde_json::json!({ "single_message_mode": true })); + let gateway = IncomingMessage::new("gateway", "owner-scope", "hello") + .with_metadata(serde_json::json!({ "single_message_mode": true })); + let plain_repl = IncomingMessage::new("repl", "owner-scope", "hello"); + + assert!(is_single_message_repl(&repl)); // safety: test-only assertion + assert!(!is_single_message_repl(&gateway)); // safety: test-only assertion + assert!(!is_single_message_repl(&plain_repl)); // safety: test-only assertion + } } diff --git a/src/channels/repl.rs b/src/channels/repl.rs index 6f15e36d..41d73a8c 100644 --- a/src/channels/repl.rs +++ b/src/channels/repl.rs @@ -510,7 +510,9 @@ impl Channel for ReplChannel { // Single message mode: send it and return if let Some(msg) = single_message { - let incoming = IncomingMessage::new("repl", &user_id, &msg).with_timezone(&sys_tz); + let incoming = IncomingMessage::new("repl", &user_id, &msg) + .with_metadata(serde_json::json!({ "single_message_mode": true })) + .with_timezone(&sys_tz); let _ = tx.blocking_send(incoming); return; } @@ -793,6 +795,7 @@ impl Channel for ReplChannel { let msg_tx = Arc::clone(&self.msg_tx); let user_id = self.user_id.clone(); let lock_flag = Arc::clone(&self.stdin_locked); + let single_message_mode = self.single_message.is_some(); tokio::task::spawn_blocking(move || { let action = run_approval_selector(allow_always).unwrap_or("n"); // Unlock stdin so readline can resume after approval @@ -801,7 +804,12 @@ impl Channel for ReplChannel { return; }; if let Some(tx) = guard.as_ref() { - let msg = IncomingMessage::new("repl", &user_id, action); + let msg = if single_message_mode { + IncomingMessage::new("repl", &user_id, action) + .with_metadata(serde_json::json!({ "single_message_mode": true })) + } else { + IncomingMessage::new("repl", &user_id, action) + }; let _ = tx.blocking_send(msg); } });