use std::collections::{BTreeMap, HashMap};
use std::fs::File;
use std::io::Write;
use std::path::{Path, PathBuf};
use anyhow::{Result, bail};
use colored::Colorize;
use fs2::FileExt;
use tokio::sync::mpsc;
use crate::controllers::config::ServiceInstance;
use super::code_runner::{COLORS, LogLine, ProcessManager, print_log_line};
use super::compose::PortType;
use super::https_proxy::HttpsConfig;
use super::local_config::LocalDevConfig;
use super::output::{ServiceSummary, print_code_service_summary};
use super::ports::{generate_port, get_develop_dir, slugify};
use super::tui;
use super::variables::{
LocalDevelopContext, inject_mkcert_ca_vars, override_railway_vars, print_domain_info,
};
pub struct DevelopSessionLock {
_file: File,
path: PathBuf,
}
impl DevelopSessionLock {
pub fn try_acquire(project_id: &str) -> Result<Self> {
let develop_dir = get_develop_dir(project_id);
Self::try_acquire_at(&develop_dir)
}
pub fn try_acquire_at(develop_dir: &Path) -> Result<Self> {
std::fs::create_dir_all(develop_dir)?;
let path = develop_dir.join("session.lock");
let file = File::create(&path)?;
match file.try_lock_exclusive() {
Ok(()) => Ok(Self { _file: file, path }),
Err(e) if e.kind() == fs2::lock_contended_error().kind() => {
bail!(
"Another develop session is already running for this project.\n\
Stop it with Ctrl+C before starting a new one."
)
}
Err(e) => Err(e.into()),
}
}
}
impl Drop for DevelopSessionLock {
fn drop(&mut self) {
let _ = std::fs::remove_file(&self.path);
}
}
pub struct DevSession {
process_manager: ProcessManager,
tui_services: Vec<tui::ServiceInfo>,
log_rx: mpsc::Receiver<LogLine>,
docker_rx: mpsc::Receiver<LogLine>,
output_path: PathBuf,
has_image_services: bool,
code_count: usize,
image_count: usize,
_session_lock: DevelopSessionLock,
}
#[allow(clippy::too_many_arguments)]
impl DevSession {
pub async fn start(
project_id: &str,
configured_code_services: &[&(&String, &ServiceInstance)],
service_names: &HashMap<String, String>,
local_dev_config: &LocalDevConfig,
code_resolved_vars: &HashMap<String, BTreeMap<String, String>>,
ctx: &LocalDevelopContext,
https_config: &Option<HttpsConfig>,
service_summaries: &[ServiceSummary],
output_path: PathBuf,
has_image_services: bool,
use_tui: bool,
verbose: bool,
) -> Result<Self> {
let session_lock = DevelopSessionLock::try_acquire(project_id)?;
println!("{}", "Starting code services...".cyan());
let (log_tx, log_rx) = mpsc::channel(100);
let mut process_manager = ProcessManager::new();
let mut tui_services: Vec<tui::ServiceInfo> = Vec::new();
for (i, (service_id, svc)) in configured_code_services.iter().enumerate() {
let dev_config = match local_dev_config.get_service(service_id) {
Some(c) => c,
None => continue,
};
let service_name = service_names
.get(*service_id)
.cloned()
.unwrap_or_else(|| (*service_id).clone());
let working_dir = PathBuf::from(&dev_config.directory);
let internal_port = dev_config
.port
.map(|p| p as i64)
.or_else(|| svc.get_ports().first().copied());
let proxy_port = internal_port.map(|p| generate_port(service_id, p));
let raw_vars = code_resolved_vars
.get(*service_id)
.cloned()
.unwrap_or_default();
let service_domains = ctx
.for_service(service_id)
.expect("service added to ctx above");
if verbose {
print_domain_info(&service_name, &service_domains);
}
let mut vars = override_railway_vars(raw_vars, Some(&service_domains), ctx);
if let Some(port) = internal_port {
vars.insert("PORT".to_string(), port.to_string());
}
if ctx.https_enabled() {
inject_mkcert_ca_vars(&mut vars);
}
if !use_tui {
print_code_service_summary(
&service_name,
&dev_config.command,
&working_dir,
vars.len(),
internal_port,
proxy_port,
https_config,
);
}
let (private_url, public_url) = match (internal_port, proxy_port) {
(Some(port), Some(pport)) => {
let private = format!("http://localhost:{}", port);
let public = https_config.as_ref().map(|config| {
let slug = slugify(&service_name);
if config.use_port_443 {
format!("https://{}.{}", slug, config.base_domain)
} else {
format!("https://{}:{}", config.base_domain, pport)
}
});
(Some(private), public)
}
_ => (None, None),
};
let color = COLORS[i % 6];
tui_services.push(tui::ServiceInfo {
name: service_name.clone(),
is_docker: false,
color,
var_count: vars.len(),
private_url,
public_url,
command: Some(dev_config.command.clone()),
image: None,
});
process_manager
.spawn_service(
service_name,
&dev_config.command,
working_dir,
vars,
log_tx.clone(),
)
.await?;
}
drop(log_tx);
let mut docker_service_mapping = tui::ServiceMapping::new();
for (i, summary) in service_summaries.iter().enumerate() {
let color = COLORS[(tui_services.len() + i) % 6];
let slug = slugify(&summary.name);
docker_service_mapping.insert(slug.clone(), (summary.name.clone(), color));
let (private_url, public_url) = summary
.ports
.iter()
.find(|p| matches!(p.port_type, PortType::Http))
.map(|p| {
let private = format!("http://localhost:{}", p.external);
let public = https_config.as_ref().map(|config| {
if config.use_port_443 {
format!("https://{}.{}", slug, config.base_domain)
} else {
format!("https://{}:{}", config.base_domain, p.public_port)
}
});
(Some(private), public)
})
.unwrap_or((None, None));
tui_services.push(tui::ServiceInfo {
name: summary.name.clone(),
is_docker: true,
color,
var_count: summary.var_count,
private_url,
public_url,
command: None,
image: Some(summary.image.clone()),
});
}
let (docker_tx, docker_rx) = mpsc::channel::<LogLine>(100);
if has_image_services {
let _ = tui::spawn_docker_logs(&output_path, docker_service_mapping, docker_tx).await;
} else {
drop(docker_tx);
}
Ok(Self {
process_manager,
tui_services,
log_rx,
docker_rx,
output_path,
has_image_services,
code_count: configured_code_services.len(),
image_count: service_summaries.len(),
_session_lock: session_lock,
})
}
pub async fn run(&mut self, use_tui: bool) -> Result<()> {
if !use_tui {
println!("{}", "Streaming logs (Ctrl+C to stop)...".dimmed());
println!();
loop {
tokio::select! {
Some(log) = self.log_rx.recv() => {
print_log_line(&log);
}
_ = tokio::signal::ctrl_c() => {
eprintln!("\n{}", "Shutting down...".yellow());
break;
}
}
}
} else {
self.tui_services.sort_by_key(|s| s.private_url.is_none());
let log_rx = std::mem::replace(&mut self.log_rx, mpsc::channel(1).1);
let docker_rx = std::mem::replace(&mut self.docker_rx, mpsc::channel(1).1);
let tui_services = std::mem::take(&mut self.tui_services);
tui::run(log_rx, docker_rx, tui_services).await?;
}
if use_tui {
print!("\x1b[2J\x1b[H");
let _ = std::io::stdout().flush();
}
Ok(())
}
pub async fn shutdown(&mut self) {
println!("{}", "Stopping services...".dimmed());
self.process_manager.shutdown().await;
if self.code_count > 0 {
println!(
" {} Stopped {} code service{}",
"✓".green(),
self.code_count,
if self.code_count == 1 { "" } else { "s" }
);
}
if self.has_image_services {
let _ = tokio::process::Command::new("docker")
.args([
"compose",
"-f",
&*self.output_path.to_string_lossy(),
"down",
])
.stdout(std::process::Stdio::null())
.stderr(std::process::Stdio::null())
.status()
.await;
println!(
" {} Stopped {} image service{}",
"✓".green(),
self.image_count,
if self.image_count == 1 { "" } else { "s" }
);
}
println!();
println!("{}", "All services stopped".green());
}
}
#[cfg(test)]
mod tests {
use super::*;
use tempfile::TempDir;
#[test]
fn test_acquire_lock() {
let temp = TempDir::new().unwrap();
let lock = DevelopSessionLock::try_acquire_at(temp.path());
assert!(lock.is_ok());
}
#[test]
fn test_concurrent_lock_fails() {
let temp = TempDir::new().unwrap();
let _lock1 = DevelopSessionLock::try_acquire_at(temp.path()).unwrap();
let lock2 = DevelopSessionLock::try_acquire_at(temp.path());
match lock2 {
Ok(_) => panic!("should fail to acquire lock"),
Err(e) => assert!(e.to_string().contains("Another develop session")),
}
}
#[test]
fn test_lock_released_on_drop() {
let temp = TempDir::new().unwrap();
{
let _lock = DevelopSessionLock::try_acquire_at(temp.path()).unwrap();
}
let lock2 = DevelopSessionLock::try_acquire_at(temp.path());
assert!(lock2.is_ok());
}
}