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|
use super::*;
/// Run the headless server. This is the entry point called from main.rs.
pub fn run_server() -> io::Result<()> {
init_logging();
crate::platform::raise_server_nofile_limit();
let args: Vec<String> = std::env::args().collect();
if args.get(2).map(String::as_str) == Some("--handoff-import") {
let socket_path = args
.get(3)
.map(PathBuf::from)
.ok_or_else(|| io::Error::new(io::ErrorKind::InvalidInput, "missing handoff socket"))?;
let token = args
.get(4)
.ok_or_else(|| io::Error::new(io::ErrorKind::InvalidInput, "missing handoff token"))?;
return run_handoff_import_server(&socket_path, token);
}
let loaded_config = config::Config::load();
let (api_tx, api_rx) = tokio::sync::mpsc::unbounded_channel();
let event_hub = api::EventHub::default();
let should_quit = Arc::new(AtomicBool::new(false));
// Start the JSON API socket server.
let _api_server = match api::start_server_with_stop_control(
api_tx.clone(),
event_hub.clone(),
should_quit.clone(),
) {
Ok(server) => server,
Err(err) if err.kind() == io::ErrorKind::AddrInUse => {
eprintln!("error: herdr server is already running");
eprintln!("api socket: {}", api::socket_path().display());
std::process::exit(1);
}
Err(err) => return Err(err),
};
let rt = tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()
.map_err(io::Error::other)?;
let result = rt.block_on(async {
// Create the App (with AppState, event channels, etc.).
let mut app = app::App::new(
&loaded_config.config,
app::AppPolicy::PRODUCTION,
config::config_diagnostic_summary(&loaded_config.diagnostics),
api_rx,
event_hub,
);
seed_startup_workspace_if_empty(&mut app);
// Create the headless server.
let mut server = match HeadlessServer::new(
app,
&loaded_config.diagnostics,
Some(api_tx.clone()),
Some(_api_server),
should_quit,
) {
Ok(server) => server,
Err(err) if err.kind() == io::ErrorKind::AddrInUse => {
eprintln!("error: herdr server is already running");
eprintln!("client socket: {}", client_socket_path().display());
std::process::exit(1);
}
Err(err) => return Err(err),
};
info!(
api_socket = %api::socket_path().display(),
client_socket = %client_socket_path().display(),
"herdr server started"
);
print_ready_message(&api::socket_path(), &client_socket_path());
server.app.run_plugin_startup_hooks();
server.run().await
});
rt.shutdown_timeout(Duration::from_millis(100));
crate::logging::shutdown("server");
result
}
fn seed_startup_workspace_if_empty(app: &mut app::App) {
let Some(cwd) = take_startup_cwd() else {
return;
};
if !app.state.workspaces.is_empty() {
info!(
cwd = %cwd.display(),
"restored session already has workspaces; ignoring startup cwd"
);
return;
}
match app.create_workspace_with_options(cwd.clone(), true) {
Ok(_) => {
info!(cwd = %cwd.display(), "created startup workspace");
}
Err(err) => {
warn!(cwd = %cwd.display(), err = %err, "failed to create startup workspace");
app.state.mode = app::Mode::Navigate;
}
}
}
fn take_startup_cwd() -> Option<PathBuf> {
let cwd = std::env::var_os(crate::server::autodetect::STARTUP_CWD_ENV_VAR)?;
std::env::remove_var(crate::server::autodetect::STARTUP_CWD_ENV_VAR);
(!cwd.is_empty()).then(|| PathBuf::from(cwd))
}
#[cfg(unix)]
fn run_handoff_import_server(socket_path: &Path, token: &str) -> io::Result<()> {
let loaded_config = config::Config::load();
let mut received = crate::server::handoff::receive(socket_path, token)?;
crate::server::handoff::log_import_result(received.manifest.panes.len());
let (api_tx, api_rx) = tokio::sync::mpsc::unbounded_channel();
let event_hub = api::EventHub::default();
let should_quit = Arc::new(AtomicBool::new(false));
let mut imports = HashMap::new();
for (pane, fd) in received.manifest.panes.into_iter().zip(received.fds) {
let pane_id = pane.pane_id;
imports.insert(
pane_id,
crate::handoff_runtime::ImportedHandoffRuntime {
master_fd: fd,
state: pane,
},
);
}
let rt = tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()
.map_err(io::Error::other)?;
let result = rt.block_on(async {
let app = app::App::new_from_handoff(
&loaded_config.config,
config::config_diagnostic_summary(&loaded_config.diagnostics),
api_rx,
event_hub.clone(),
&received.manifest.snapshot,
&mut imports,
)?;
crate::server::handoff::report_restored(&mut received.stream)?;
if std::env::var("HERDR_TEST_HANDOFF_IMPORT_FAIL").as_deref() == Ok("after_restored") {
return Err(io::Error::other(
"test handoff import failure after restored",
));
}
wait_for_old_public_sockets_to_close(Duration::from_secs(5))?;
let api_server = api::start_server_with_stop_control(
api_tx.clone(),
event_hub.clone(),
should_quit.clone(),
)?;
let mut server = HeadlessServer::new(
app,
&loaded_config.diagnostics,
Some(api_tx.clone()),
Some(api_server),
should_quit,
)?;
// Carried across before any client attaches, so the first title sent is
// the override rather than the configured one it replaced.
server.api_window_title = received.manifest.api_window_title.take();
crate::server::handoff::report_ready(&mut received.stream)?;
crate::server::handoff::wait_committed(&mut received.stream)?;
server.app.assume_handoff_ownership();
server.app.unpause_handoff_readers();
server.pending_handoff_repaint_nudge = true;
if let Err(err) = crate::server::handoff::report_owned(&mut received.stream) {
warn!(err = %err, "failed to report handoff ownership; continuing as owner");
}
info!("handoff import server started");
print_ready_message(&api::socket_path(), &client_socket_path());
server.app.run_plugin_startup_hooks();
server.run().await
});
rt.shutdown_timeout(Duration::from_millis(100));
crate::logging::shutdown("server");
result
}
#[cfg(not(unix))]
fn run_handoff_import_server(_socket_path: &Path, _token: &str) -> io::Result<()> {
Err(io::Error::other("live handoff is only supported on Unix"))
}
fn print_ready_message(api_socket: &Path, client_socket: &Path) {
eprintln!("herdr server running; you can use any herdr CLI command in another terminal.");
eprintln!("api socket: {}", api_socket.display());
eprintln!("client socket: {}", client_socket.display());
eprintln!(
"logs: {}",
crate::session::data_dir()
.join("herdr-server.log")
.display()
);
eprintln!("did you mean to open the Herdr TUI? run `herdr`; you do not need `herdr server`.");
}
/// Initialize logging for the server process.
fn init_logging() {
crate::logging::init_file_logging("herdr-server.log");
}
|
