239 lines
9.2 KiB
Rust
239 lines
9.2 KiB
Rust
use std::path::Path;
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use std::sync::Arc;
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use anyhow::{Context, Result};
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use hive_sh4re::{HostRequest, HostResponse};
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use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
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use tokio::net::{UnixListener, UnixStream};
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use crate::actions;
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use crate::coordinator::Coordinator;
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use crate::lifecycle;
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pub async fn serve(socket: &Path, coord: Arc<Coordinator>) -> Result<()> {
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// Prefer a socket passed by systemd socket-activation (LISTEN_FDS).
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// When running under a `.socket` unit, systemd has already created,
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// bound, and chmod-ed the socket for us — we just accept on it.
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// Fall back to the traditional bind path when not socket-activated
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// (direct invocation, dev, tests).
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let listener = {
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let mut listenfd = listenfd::ListenFd::from_env();
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if let Some(std_listener) = listenfd
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.take_unix_listener(0)
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.context("take socket-activated unix listener")?
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{
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std_listener.set_nonblocking(true)?;
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UnixListener::from_std(std_listener)
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.context("convert socket-activated listener to tokio")?
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} else {
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// Standalone: create parent dir, remove any stale socket, bind.
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if let Some(parent) = socket.parent() {
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std::fs::create_dir_all(parent)
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.with_context(|| format!("create socket parent {}", parent.display()))?;
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}
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if socket.exists() {
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std::fs::remove_file(socket).context("remove stale socket")?;
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}
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UnixListener::bind(socket)
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.with_context(|| format!("bind admin socket {}", socket.display()))?
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}
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};
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tracing::info!(socket = %socket.display(), hyperhive_flake = %coord.hyperhive_flake, "hive-c0re admin listening");
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loop {
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let (stream, _) = listener.accept().await.context("accept connection")?;
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let coord = coord.clone();
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tokio::spawn(async move {
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if let Err(e) = handle(stream, coord).await {
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tracing::warn!(error = ?e, "connection failed");
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}
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});
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}
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}
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async fn handle(stream: UnixStream, coord: Arc<Coordinator>) -> Result<()> {
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let (read, mut write) = stream.into_split();
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let mut reader = BufReader::new(read);
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let mut line = String::new();
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loop {
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line.clear();
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let n = reader.read_line(&mut line).await?;
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if n == 0 {
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return Ok(());
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}
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let resp = match serde_json::from_str::<HostRequest>(line.trim()) {
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Ok(req) => dispatch(&req, coord.clone()).await,
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Err(e) => HostResponse::error(format!("parse error: {e}")),
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};
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let mut payload = serde_json::to_string(&resp)?;
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payload.push('\n');
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write.write_all(payload.as_bytes()).await?;
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write.flush().await?;
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}
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}
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async fn dispatch(req: &HostRequest, coord: Arc<Coordinator>) -> HostResponse {
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let result: anyhow::Result<HostResponse> = async {
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Ok(match req {
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HostRequest::Spawn { name } => handle_spawn(&coord, name).await?,
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HostRequest::RequestSpawn { name } => {
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tracing::info!(%name, "request_spawn");
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let id =
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coord
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.approvals
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.submit_kind(name, hive_sh4re::ApprovalKind::Spawn, "", None)?;
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tracing::info!(%id, %name, "spawn approval queued");
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HostResponse::success()
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}
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HostRequest::Kill { name } => handle_kill(&coord, name).await?,
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HostRequest::Restart { name } => {
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tracing::info!(%name, "restart");
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lifecycle::restart(name).await?;
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HostResponse::success()
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}
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HostRequest::RestartAll => handle_restart_all().await?,
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HostRequest::Destroy { name, purge } => {
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actions::destroy(&coord, name, *purge).await?;
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HostResponse::success()
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}
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HostRequest::Rebuild { name } => handle_rebuild(&coord, name).await?,
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HostRequest::List => HostResponse::list(lifecycle::list().await?),
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HostRequest::Pending => HostResponse::pending(coord.approvals.pending()?),
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HostRequest::Approve { id } => {
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actions::approve(coord.clone(), *id).await?;
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HostResponse::success()
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}
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HostRequest::Deny { id } => {
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actions::deny(&coord, *id, None).await?;
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HostResponse::success()
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}
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HostRequest::SetParent { child, new_parent } => {
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tracing::info!(%child, ?new_parent, "set_parent");
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// `reparent_with_notify` wraps `topology::set_parent`
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// with the three notification messages + the
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// ContainerView rescan. Idempotent same-parent calls
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// skip both the messages and the disk write per the
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// topology fast-path.
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coord
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.reparent_with_notify(child, new_parent.as_deref())
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.await
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.map_err(anyhow::Error::msg)?;
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HostResponse::success()
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}
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})
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}
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.await;
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match result {
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Ok(r) => r,
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Err(e) => HostResponse::error(format!("{e:#}")),
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}
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}
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/// Create + start the container for `name`, rolling back socket
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/// registration and notifying the manager on failure.
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async fn handle_spawn(coord: &Arc<Coordinator>, name: &str) -> Result<HostResponse> {
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tracing::info!(%name, "spawn");
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let agent_dir = coord.ensure_runtime(name)?;
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let hive = coord.hive_env();
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let paths = Coordinator::agent_paths(name, agent_dir);
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match lifecycle::spawn(name, &hive, &paths).await {
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Ok(()) => {
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coord.notify_manager(&hive_sh4re::HelperEvent::Spawned {
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agent: name.to_owned(),
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ok: true,
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note: None,
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sha: None,
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});
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}
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Err(e) => {
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// Roll back socket registration if container creation failed.
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coord.unregister_agent(name);
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coord.notify_manager(&hive_sh4re::HelperEvent::Spawned {
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agent: name.to_owned(),
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ok: false,
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note: Some(format!("{e:#}")),
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sha: None,
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});
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return Err(e);
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}
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}
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Ok(HostResponse::success())
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}
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/// Kill `name`'s container, unregister its socket, notify the manager.
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async fn handle_kill(coord: &Arc<Coordinator>, name: &str) -> Result<HostResponse> {
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tracing::info!(%name, "kill");
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lifecycle::kill(name).await?;
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coord.unregister_agent(name);
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coord.notify_manager(&hive_sh4re::HelperEvent::Killed {
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agent: name.to_owned(),
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});
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Ok(HostResponse::success())
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}
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/// Restart every container, aggregating per-agent failures into one
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/// response rather than aborting on the first error.
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async fn handle_restart_all() -> Result<HostResponse> {
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tracing::info!("restart-all");
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let agents = lifecycle::list().await?;
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let mut ok_agents: Vec<String> = Vec::new();
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let mut errors: Vec<String> = Vec::new();
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for agent in &agents {
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if let Err(e) = lifecycle::restart(agent).await {
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tracing::warn!(%agent, error = ?e, "restart-all: failed to restart agent");
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errors.push(format!("{agent}: {e:#}"));
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} else {
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ok_agents.push(agent.clone());
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}
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}
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if errors.is_empty() {
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Ok(HostResponse::list(ok_agents))
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} else {
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Ok(HostResponse {
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ok: false,
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error: Some(errors.join("; ")),
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agents: Some(ok_agents),
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approvals: None,
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})
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}
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}
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/// Rebuild `name`'s container, notifying the manager of the outcome
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/// (success or failure) and kicking the agent's next turn on success.
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async fn handle_rebuild(coord: &Arc<Coordinator>, name: &str) -> Result<HostResponse> {
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tracing::info!(%name, "rebuild");
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let agent_dir = coord.ensure_runtime(name)?;
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let hive = coord.hive_env();
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let paths = Coordinator::agent_paths(name, agent_dir);
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let result = lifecycle::rebuild(name, &hive, &paths, &|_| (), &|_| ()).await;
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// Mirror auto_update::rebuild_agent — the manager wants to know
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// about every rebuild attempt regardless of which surface triggered
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// it, especially failures (build error → manager can adjust the
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// agent's agent.nix). Without this the admin-socket CLI was a
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// notify-gap.
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match &result {
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Ok(()) => {
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coord.notify_manager(&hive_sh4re::HelperEvent::Rebuilt {
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agent: name.to_owned(),
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ok: true,
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note: None,
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sha: None,
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tag: None,
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});
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// Wake the agent's next turn with the "you were rebuilt"
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// hint. Same pattern as auto_update::rebuild_agent and the
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// dashboard rebuild path — this is the CLI's equivalent.
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coord.kick_agent(name, "container rebuilt");
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}
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Err(e) => coord.notify_manager(&hive_sh4re::HelperEvent::Rebuilt {
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agent: name.to_owned(),
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ok: false,
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note: Some(format!("{e:#}")),
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sha: None,
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tag: None,
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}),
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}
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result?;
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Ok(HostResponse::success())
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}
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