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AgentCycleState: persistent state for agent orchestration

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Move agent cycle functions from free functions to methods on
AgentCycleState. The struct tracks per-agent pid/phase and the
log file handle. trigger() runs all three cycles and updates
last_output.

Claude Code hook path creates a temporary AgentCycleState per call.
poc-agent will own one persistently and share it with the TUI.

Co-Authored-By: Proof of Concept <poc@bcachefs.org>
This commit is contained in:
Kent Overstreet 2026-04-02 00:47:52 -04:00
parent 55a037f4c7
commit d097c8e067
1 changed files with 227 additions and 171 deletions
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166
src/subconscious/hook.rs
View file

@ -134,26 +134,84 @@ pub struct AgentCycleOutput {
pub sleep_secs: Option<f64>,
}
/// Run all agent cycles: surface-observe, reflect, journal.
/// Returns surfaced memory keys and any reflection text.
/// Caller decides how to render and inject the output.
pub fn run_agent_cycles(session: &HookSession) -> AgentCycleOutput {
/// Per-agent runtime state visible to the TUI.
pub struct AgentInfo {
pub name: &'static str,
pub pid: Option<u32>,
pub phase: Option<String>,
pub last_log: Option<std::path::PathBuf>,
}
/// Persistent state for the agent orchestration cycle.
/// Created once, `trigger()` called on each user message.
/// TUI reads `agents` and `last_output` for display.
pub struct AgentCycleState {
output_dir: std::path::PathBuf,
log_file: Option<File>,
pub agents: Vec<AgentInfo>,
pub last_output: AgentCycleOutput,
}
const AGENT_CYCLE_NAMES: &[&str] = &["surface-observe", "journal", "reflect"];
impl AgentCycleState {
pub fn new(session_id: &str) -> Self {
let output_dir = crate::store::memory_dir().join("agent-output");
let log_dir = dirs::home_dir().unwrap_or_default().join(".consciousness/logs");
fs::create_dir_all(&log_dir).ok();
let log_path = log_dir.join(format!("hook-{}", session.session_id));
let Ok(mut log_f) = fs::OpenOptions::new().create(true).append(true).open(log_path)
else { return AgentCycleOutput { surfaced_keys: vec![], reflection: None, sleep_secs: None } };
let log_path = log_dir.join(format!("hook-{}", session_id));
let log_file = fs::OpenOptions::new()
.create(true).append(true).open(log_path).ok();
let agents = AGENT_CYCLE_NAMES.iter()
.map(|&name| AgentInfo { name, pid: None, phase: None, last_log: None })
.collect();
AgentCycleState {
output_dir,
log_file,
agents,
last_output: AgentCycleOutput {
surfaced_keys: vec![],
reflection: None,
sleep_secs: None,
},
}
}
fn log(&mut self, msg: std::fmt::Arguments) {
if let Some(ref mut f) = self.log_file {
let _ = write!(f, "{}", msg);
}
}
fn update_agent(&mut self, name: &str, pid: Option<u32>, phase: Option<String>) {
if let Some(agent) = self.agents.iter_mut().find(|a| a.name == name) {
agent.pid = pid;
agent.phase = phase;
}
}
/// Run all agent cycles. Call on each user message.
pub fn trigger(&mut self, session: &HookSession) {
let ts = chrono::Local::now().format("%Y-%m-%dT%H:%M:%S");
let _ = writeln!(log_f, "\n=== {} agent_cycles ===", ts);
self.log(format_args!("\n=== {} agent_cycles ===\n", ts));
cleanup_stale_files(&session.state_dir, Duration::from_secs(86400));
let (surfaced_keys, sleep_secs) = surface_observe_cycle(session, &mut log_f);
let reflection = reflection_cycle(session, &mut log_f);
journal_cycle(session, &mut log_f);
let (surfaced_keys, sleep_secs) = self.surface_observe_cycle(session);
let reflection = self.reflection_cycle(session);
self.journal_cycle(session);
AgentCycleOutput { surfaced_keys, reflection, sleep_secs }
self.last_output = AgentCycleOutput { surfaced_keys, reflection, sleep_secs };
}
}
/// Standalone entry point for the Claude Code hook path.
pub fn run_agent_cycles(session: &HookSession) -> AgentCycleOutput {
let mut state = AgentCycleState::new(&session.session_id);
state.trigger(session);
state.last_output
}
/// Format agent cycle output for injection into a Claude Code session.
@ -187,14 +245,15 @@ pub fn format_agent_output(output: &AgentCycleOutput) -> String {
out
}
/// Surface-observe cycle: read surfaced keys, manage agent lifecycle.
/// Returns (surfaced keys, optional sleep duration).
fn surface_observe_cycle(session: &HookSession, log_f: &mut File) -> (Vec<String>, Option<f64>) {
let state_dir = crate::store::memory_dir()
.join("agent-output")
.join("surface-observe");
fs::create_dir_all(&state_dir).ok();
impl AgentCycleState {
fn agent_dir(&self, name: &str) -> std::path::PathBuf {
let dir = self.output_dir.join(name);
fs::create_dir_all(&dir).ok();
dir
}
fn surface_observe_cycle(&mut self, session: &HookSession) -> (Vec<String>, Option<f64>) {
let state_dir = self.agent_dir("surface-observe");
let transcript = session.transcript();
let offset_path = state_dir.join("transcript-offset");
let last_offset: u64 = fs::read_to_string(&offset_path).ok()
@ -206,8 +265,11 @@ fn surface_observe_cycle(session: &HookSession, log_f: &mut File) -> (Vec<String
.unwrap_or(300) as u64;
let live = crate::agents::knowledge::scan_pid_files(&state_dir, timeout);
for (phase, pid) in &live {
let _ = writeln!(log_f, "alive pid-{}: phase={}", pid, phase);
if let Some((phase, pid)) = live.first() {
self.update_agent("surface-observe", Some(*pid), Some(phase.clone()));
self.log(format_args!("alive pid-{}: phase={}\n", pid, phase));
} else {
self.update_agent("surface-observe", None, None);
}
// Read surfaced keys
@ -218,7 +280,7 @@ fn surface_observe_cycle(session: &HookSession, log_f: &mut File) -> (Vec<String
let seen_path = session.path("seen");
for key in content.lines().map(|l| l.trim()).filter(|l| !l.is_empty()) {
if !seen.insert(key.to_string()) {
let _ = writeln!(log_f, " skip (seen): {}", key);
self.log(format_args!(" skip (seen): {}\n", key));
continue;
}
surfaced_keys.push(key.to_string());
@ -227,7 +289,7 @@ fn surface_observe_cycle(session: &HookSession, log_f: &mut File) -> (Vec<String
let ts = chrono::Local::now().format("%Y-%m-%dT%H:%M:%S");
writeln!(f, "{}\t{}", ts, key).ok();
}
let _ = writeln!(log_f, " surfaced: {}", key);
self.log(format_args!(" surfaced: {}\n", key));
}
fs::remove_file(&surface_path).ok();
}
@ -237,14 +299,16 @@ fn surface_observe_cycle(session: &HookSession, log_f: &mut File) -> (Vec<String
let any_in_surface = live.iter().any(|(p, _)| p == "surface");
if any_in_surface {
let _ = writeln!(log_f, "agent in surface phase (have {:?}), waiting", live);
self.log(format_args!("agent in surface phase, waiting\n"));
} else {
if transcript.size > 0 {
fs::write(&offset_path, transcript.size.to_string()).ok();
}
let pid = crate::agents::knowledge::spawn_agent(
"surface-observe", &state_dir, &session.session_id);
let _ = writeln!(log_f, "spawned agent {:?}, have {:?}", pid, live);
self.update_agent("surface-observe",
pid, Some("surface".into()));
self.log(format_args!("spawned agent {:?}\n", pid));
}
// Wait if agent is significantly behind
@ -256,8 +320,7 @@ fn surface_observe_cycle(session: &HookSession, log_f: &mut File) -> (Vec<String
if behind > conversation_budget / 2 {
let sleep_start = Instant::now();
let _ = write!(log_f, "agent {}KB behind (budget {}KB)",
behind / 1024, conversation_budget / 1024);
self.log(format_args!("agent {}KB behind\n", behind / 1024));
for _ in 0..5 {
std::thread::sleep(std::time::Duration::from_secs(1));
@ -266,21 +329,16 @@ fn surface_observe_cycle(session: &HookSession, log_f: &mut File) -> (Vec<String
}
let secs = (Instant::now() - sleep_start).as_secs_f64();
let _ = writeln!(log_f, ", slept {secs:.2}s");
self.log(format_args!("slept {secs:.2}s\n"));
sleep_secs = Some(secs);
}
}
(surfaced_keys, sleep_secs)
}
/// Reflection cycle: spawn reflect agent, return any pending reflection.
fn reflection_cycle(session: &HookSession, log_f: &mut File) -> Option<String> {
let state_dir = crate::store::memory_dir()
.join("agent-output")
.join("reflect");
fs::create_dir_all(&state_dir).ok();
}
fn reflection_cycle(&mut self, session: &HookSession) -> Option<String> {
let state_dir = self.agent_dir("reflect");
let offset_path = state_dir.join("transcript-offset");
let transcript = session.transcript();
@ -294,15 +352,14 @@ fn reflection_cycle(session: &HookSession, log_f: &mut File) -> Option<String> {
}
let live = crate::agents::knowledge::scan_pid_files(&state_dir, 300);
if !live.is_empty() {
let _ = writeln!(log_f, "reflect: already running {:?}", live);
if let Some((phase, pid)) = live.first() {
self.update_agent("reflect", Some(*pid), Some(phase.clone()));
self.log(format_args!("reflect: already running pid {}\n", pid));
return None;
}
// Copy walked nodes from surface-observe
let so_state = crate::store::memory_dir()
.join("agent-output")
.join("surface-observe");
let so_state = self.agent_dir("surface-observe");
if let Ok(walked) = fs::read_to_string(so_state.join("walked")) {
fs::write(state_dir.join("walked"), &walked).ok();
}
@ -312,24 +369,20 @@ fn reflection_cycle(session: &HookSession, log_f: &mut File) -> Option<String> {
.filter(|s| !s.trim().is_empty());
if reflection.is_some() {
fs::remove_file(state_dir.join("reflection")).ok();
let _ = writeln!(log_f, "reflect: consumed reflection");
self.log(format_args!("reflect: consumed reflection\n"));
}
fs::write(&offset_path, transcript.size.to_string()).ok();
let pid = crate::agents::knowledge::spawn_agent(
"reflect", &state_dir, &session.session_id);
let _ = writeln!(log_f, "reflect: spawned {:?}", pid);
self.update_agent("reflect", pid, Some("step-0".into()));
self.log(format_args!("reflect: spawned {:?}\n", pid));
reflection
}
/// Journal cycle: fire and forget.
fn journal_cycle(session: &HookSession, log_f: &mut File) {
let state_dir = crate::store::memory_dir()
.join("agent-output")
.join("journal");
fs::create_dir_all(&state_dir).ok();
}
fn journal_cycle(&mut self, session: &HookSession) {
let state_dir = self.agent_dir("journal");
let offset_path = state_dir.join("transcript-offset");
let transcript = session.transcript();
@ -343,16 +396,19 @@ fn journal_cycle(session: &HookSession, log_f: &mut File) {
}
let live = crate::agents::knowledge::scan_pid_files(&state_dir, 300);
if !live.is_empty() {
let _ = writeln!(log_f, "journal: already running {:?}", live);
if let Some((phase, pid)) = live.first() {
self.update_agent("journal", Some(*pid), Some(phase.clone()));
self.log(format_args!("journal: already running pid {}\n", pid));
return;
}
fs::write(&offset_path, transcript.size.to_string()).ok();
let pid = crate::agents::knowledge::spawn_agent(
"journal", &state_dir, &session.session_id);
let _ = writeln!(log_f, "journal: spawned {:?}", pid);
}
self.update_agent("journal", pid, Some("step-0".into()));
self.log(format_args!("journal: spawned {:?}\n", pid));
}
} // end impl AgentCycleState (cycle methods)
fn cleanup_stale_files(dir: &Path, max_age: Duration) {
let entries = match fs::read_dir(dir) {