/
lib.rs
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/
lib.rs
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/*
* Author: Ruben Fiszel
* Copyright: Windmill Labs, Inc 2022
* This file and its contents are licensed under the AGPLv3 License.
* Please see the included NOTICE for copyright information and
* LICENSE-AGPL for a copy of the license.
*/
use anyhow::Context;
use argon2::Argon2;
use axum::{handler::Handler, middleware::from_extractor, routing::get, Extension, Router};
use db::DB;
use futures::FutureExt;
use git_version::git_version;
use slack_http_verifier::SlackVerifier;
use std::{net::SocketAddr, sync::Arc};
use tower::ServiceBuilder;
use tower_cookies::CookieManagerLayer;
use tower_http::trace::TraceLayer;
extern crate magic_crypt;
extern crate dotenv;
mod audit;
mod client;
mod db;
mod email;
mod error;
mod external_ip;
mod flows;
mod granular_acls;
mod groups;
mod jobs;
mod js_eval;
mod oauth2;
mod parser;
mod parser_py;
mod parser_ts;
mod resources;
mod schedule;
mod scripts;
mod static_assets;
mod tracing_init;
mod users;
mod utils;
mod variables;
mod worker;
mod worker_flow;
mod worker_ping;
mod workspaces;
use error::Error;
pub use crate::email::EmailSender;
use crate::{
db::UserDB,
error::to_anyhow,
oauth2::build_oauth_clients,
tracing_init::{MyMakeSpan, MyOnResponse},
utils::rd_string,
};
pub use crate::tracing_init::initialize_tracing;
const GIT_VERSION: &str = git_version!(args = ["--tag", "--always"], fallback = "unknown-version");
pub const DEFAULT_NUM_WORKERS: usize = 3;
pub const DEFAULT_TIMEOUT: i32 = 300;
pub const DEFAULT_SLEEP_QUEUE: u64 = 50;
pub const DEFAULT_MAX_CONNECTIONS: u32 = 100;
pub async fn migrate_db(db: &DB) -> anyhow::Result<()> {
let app_password = std::env::var("APP_USER_PASSWORD").unwrap_or_else(|_| "changeme".to_owned());
db::migrate(db).await?;
db::setup_app_user(db, &app_password).await?;
Ok(())
}
pub async fn connect_db() -> anyhow::Result<DB> {
let database_url = std::env::var("DATABASE_URL")
.map_err(|_| Error::BadConfig("DATABASE_URL env var is missing".to_string()))?;
let max_connections = match std::env::var("DATABASE_CONNECTIONS") {
Ok(n) => n.parse::<u32>().context("invalid DATABASE_CONNECTIONS")?,
Err(_) => DEFAULT_MAX_CONNECTIONS,
};
Ok(db::connect(&database_url, max_connections).await?)
}
struct BaseUrl(String);
struct CloudHosted(bool);
pub async fn run_server(
db: DB,
addr: SocketAddr,
base_url: &str,
es: EmailSender,
mut rx: tokio::sync::broadcast::Receiver<()>,
) -> anyhow::Result<()> {
let user_db = UserDB::new(db.clone());
let auth_cache = Arc::new(users::AuthCache::new(db.clone()));
let argon2 = Arc::new(Argon2::default());
let email_sender = Arc::new(es);
let basic_clients = Arc::new(build_oauth_clients(base_url).await?);
let slack_verifier = Arc::new(
std::env::var("SLACK_SIGNING_SECRET")
.ok()
.map(|x| SlackVerifier::new(x).unwrap()),
);
let http_client = reqwest::ClientBuilder::new()
.user_agent("windmill/beta")
.build()
.map_err(to_anyhow)?;
let middleware_stack = ServiceBuilder::new()
.layer(
TraceLayer::new_for_http()
.on_response(MyOnResponse {})
.make_span_with(MyMakeSpan {})
.on_request(()),
)
.layer(Extension(db.clone()))
.layer(Extension(user_db))
.layer(Extension(auth_cache.clone()))
.layer(Extension(basic_clients))
.layer(Extension(Arc::new(BaseUrl(base_url.to_string()))))
.layer(Extension(Arc::new(CloudHosted(
std::env::var("CLOUD_HOSTED").is_ok(),
))))
.layer(Extension(http_client))
.layer(CookieManagerLayer::new());
// build our application with a route
let app = Router::new()
.nest(
"/api",
Router::new()
.nest(
"/w/:workspace_id",
Router::new()
.nest("/scripts", scripts::workspaced_service())
.nest("/jobs", jobs::workspaced_service())
.nest(
"/users",
users::workspaced_service()
.layer(Extension(argon2.clone()))
.layer(Extension(email_sender)),
)
.nest("/variables", variables::workspaced_service())
.nest("/oauth", oauth2::workspaced_service())
.nest("/resources", resources::workspaced_service())
.nest("/schedules", schedule::workspaced_service())
.nest("/groups", groups::workspaced_service())
.nest("/audit", audit::workspaced_service())
.nest("/acls", granular_acls::workspaced_service())
.nest("/workspaces", workspaces::workspaced_service())
.nest("/flows", flows::workspaced_service()),
)
.nest("/workspaces", workspaces::global_service())
.nest(
"/users",
users::global_service().layer(Extension(argon2.clone())),
)
.nest("/workers", worker_ping::global_service())
.nest("/scripts", scripts::global_service())
.nest("/flows", flows::global_service())
.nest("/schedules", schedule::global_service())
.route_layer(from_extractor::<users::Authed>())
.route_layer(from_extractor::<users::Tokened>())
.nest(
"/auth",
users::make_unauthed_service().layer(Extension(argon2)),
)
.nest(
"/oauth",
oauth2::global_service().layer(Extension(slack_verifier)),
)
.route("/version", get(git_v))
.route("/openapi.yaml", get(openapi)),
)
.fallback(static_assets::static_handler.into_service())
.layer(middleware_stack);
let instance_name = rd_string(5);
tracing::info!(addr = %addr.to_string(), instance = %instance_name, "server started listening");
let server = axum::Server::bind(&addr)
.serve(app.into_make_service())
.with_graceful_shutdown(async {
rx.recv().await.ok();
println!("Graceful shutdown of server");
});
tokio::spawn(async move { auth_cache.monitor().await });
server.await?;
Ok(())
}
pub fn monitor_db(db: &DB, timeout: i32, rx: tokio::sync::broadcast::Receiver<()>) {
let db1 = db.clone();
let db2 = db.clone();
let rx2 = rx.resubscribe();
tokio::spawn(async move { worker::restart_zombie_jobs_periodically(&db1, timeout, rx).await });
tokio::spawn(async move { users::delete_expired_items_perdiodically(&db2, rx2).await });
}
pub async fn run_workers(
db: DB,
addr: SocketAddr,
timeout: i32,
num_workers: i32,
sleep_queue: u64,
base_url: String,
disable_nuser: bool,
disable_nsjail: bool,
rx: tokio::sync::broadcast::Receiver<()>,
) -> anyhow::Result<()> {
let instance_name = rd_string(5);
let ip = external_ip::get_ip().await.unwrap_or_else(|e| {
tracing::warn!(error = e.to_string(), "failed to get external IP");
"unretrievable IP".to_string()
});
let mut handles = Vec::new();
for i in 1..(num_workers + 1) {
let db1 = db.clone();
let instance_name = instance_name.clone();
let worker_name = format!("dt-worker-{}-{}", &instance_name, rd_string(5));
let ip = ip.clone();
let base_url = base_url.clone();
let rx = rx.resubscribe();
handles.push(tokio::spawn(async move {
tracing::info!(addr = %addr.to_string(), worker = %worker_name, "starting worker");
worker::run_worker(
&db1,
timeout,
&instance_name,
worker_name,
i as u64,
num_workers as u64,
&ip,
sleep_queue,
&base_url,
disable_nuser,
disable_nsjail,
rx,
)
.await
}));
}
futures::future::try_join_all(handles).await?;
Ok(())
}
async fn git_v() -> &'static str {
GIT_VERSION
}
async fn openapi() -> &'static str {
include_str!("../openapi.yaml")
}
pub async fn shutdown_signal(tx: tokio::sync::broadcast::Sender<()>) -> anyhow::Result<()> {
use std::io;
use tokio::signal::unix::SignalKind;
async fn terminate() -> io::Result<()> {
tokio::signal::unix::signal(SignalKind::terminate())?
.recv()
.await;
Ok(())
}
tokio::select! {
_ = terminate() => {},
_ = tokio::signal::ctrl_c() => {},
}
println!("signal received, starting graceful shutdown");
let _ = tx.send(());
Ok(())
}
pub async fn serve_metrics(
addr: SocketAddr,
mut rx: tokio::sync::broadcast::Receiver<()>,
) -> Result<(), hyper::Error> {
axum::Server::bind(&addr)
.serve(
Router::new()
.route("/metrics", get(metrics))
.into_make_service(),
)
.with_graceful_shutdown(rx.recv().map(drop))
.await
}
async fn metrics() -> Result<String, Error> {
let metric_families = prometheus::gather();
Ok(prometheus::TextEncoder::new()
.encode_to_string(&metric_families)
.map_err(anyhow::Error::from)?)
}