mirror of
https://github.com/Syfaro/bkapi.git
synced 2024-11-05 14:44:29 +00:00
Switch to actix, refactoring.
This commit is contained in:
Syfaro
parent
196ea5a2e2
commit
3b3d1db2dc
1369
Cargo.lock
generated
1369
Cargo.lock
generated
File diff suppressed because it is too large
Load Diff
13
Cargo.toml
13
Cargo.toml
@ -13,8 +13,7 @@ tracing-subscriber = "0.2"
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tracing-unwrap = "0.9"
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tracing-opentelemetry = "0.14"
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opentelemetry = { version = "0.15", features = ["rt-async-std"] }
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opentelemetry-semantic-conventions = "0.7.0"
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opentelemetry = { version = "0.15", features = ["rt-tokio"] }
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opentelemetry-jaeger = "0.14"
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lazy_static = "1"
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@ -24,14 +23,16 @@ bk-tree = "0.4.0"
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hamming = "0.1"
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futures = "0.3"
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async-std = { version = "1", features = ["attributes"] }
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tokio = { version = "1", features = ["sync"] }
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serde = { version = "1", features = ["derive"] }
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serde_json = "1"
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tide = "0.16"
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tide-tracing = "0.0.11"
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actix-web = "4.0.0-beta.8"
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actix-http = "3.0.0-beta.8"
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actix-service = "2"
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tracing-actix-web = { version = "0.4.0-beta.9", features = ["opentelemetry_0_15"] }
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[dependencies.sqlx]
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version = "0.5"
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features = ["runtime-async-std-rustls", "postgres"]
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features = ["runtime-actix-rustls", "postgres"]
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313
src/main.rs
313
src/main.rs
@ -1,17 +1,20 @@
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use std::sync::Arc;
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use async_std::sync::{RwLock, RwLockUpgradableReadGuard};
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use actix_service::Service;
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use actix_web::{
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get,
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web::{self, Data},
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App, HttpResponse, HttpServer, Responder,
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};
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use envconfig::Envconfig;
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use opentelemetry::KeyValue;
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use sqlx::{
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postgres::{PgListener, PgPoolOptions},
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Pool, Postgres, Row,
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};
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use tide::Request;
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use prometheus::{Encoder, TextEncoder};
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use sqlx::postgres::PgPoolOptions;
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use tokio::sync::RwLock;
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use tracing_subscriber::layer::SubscriberExt;
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use tracing_unwrap::ResultExt;
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mod middlewares;
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mod tree;
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lazy_static::lazy_static! {
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static ref HTTP_REQUEST_COUNT: prometheus::CounterVec = prometheus::register_counter_vec!("http_requests_total", "Number of HTTP requests", &["http_route", "http_method", "http_status_code"]).unwrap();
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@ -31,8 +34,6 @@ enum Error {
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Data(serde_json::Error),
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}
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type Tree = Arc<RwLock<bk_tree::BKTree<Node, Hamming>>>;
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#[derive(Envconfig, Clone)]
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struct Config {
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#[envconfig(default = "0.0.0.0:3000")]
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@ -51,40 +52,84 @@ struct Config {
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max_distance: Option<u32>,
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}
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/// A hamming distance metric.
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struct Hamming;
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impl bk_tree::Metric<Node> for Hamming {
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fn distance(&self, a: &Node, b: &Node) -> u32 {
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hamming::distance_fast(&a.0, &b.0).expect_or_log("hashes did not have same byte alignment")
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as u32
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}
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fn threshold_distance(&self, a: &Node, b: &Node, _threshold: u32) -> Option<u32> {
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Some(self.distance(a, b))
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}
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}
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/// A value of a node in the BK tree.
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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struct Node([u8; 8]);
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impl From<i64> for Node {
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fn from(num: i64) -> Self {
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Self(num.to_be_bytes())
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}
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}
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impl From<Node> for i64 {
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fn from(node: Node) -> Self {
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i64::from_be_bytes(node.0)
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}
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}
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#[async_std::main]
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#[actix_web::main]
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async fn main() {
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let config = Config::init_from_env().expect("could not load config");
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configure_tracing(&config);
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tracing::info!("starting bkbase");
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let tree: tree::Tree = Arc::new(RwLock::new(bk_tree::BKTree::new(tree::Hamming)));
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tracing::trace!("connecting to postgres");
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let pool = PgPoolOptions::new()
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.max_connections(2)
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.connect(&config.database_url)
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.await
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.expect_or_log("could not connect to database");
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tracing::debug!("connected to postgres");
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let http_listen = config.http_listen.clone();
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let (sender, receiver) = futures::channel::oneshot::channel();
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tracing::info!("starting to listen for payloads");
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let tree_clone = tree.clone();
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let config_clone = config.clone();
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tokio::task::spawn(async {
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tree::listen_for_payloads(pool, config_clone, tree_clone, sender)
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.await
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.expect_or_log("listenting for updates failed");
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});
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tracing::info!("waiting for initial tree to load");
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receiver
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.await
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.expect_or_log("tree loading was dropped before completing");
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tracing::info!("initial tree loaded, starting server");
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let tree = Data::new(tree);
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let config = Data::new(config);
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HttpServer::new(move || {
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App::new()
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.wrap(tracing_actix_web::TracingLogger::default())
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.wrap_fn(|req, srv| {
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let path = req.path().to_owned();
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let method = req.method().to_string();
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let start = std::time::Instant::now();
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let fut = srv.call(req);
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async move {
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let res = fut.await?;
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let end = std::time::Instant::now().duration_since(start);
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let status_code = res.status().as_u16().to_string();
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let labels: Vec<&str> = vec![&path, &method, &status_code];
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HTTP_REQUEST_COUNT.with_label_values(&labels).inc();
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HTTP_REQUEST_DURATION
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.with_label_values(&labels)
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.observe(end.as_secs_f64());
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Ok(res)
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}
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})
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.app_data(tree.clone())
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.app_data(config.clone())
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.service(search)
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.service(health)
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.service(metrics)
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})
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.bind(&http_listen)
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.expect_or_log("bind failed")
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.run()
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.await
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.expect_or_log("server failed");
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}
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fn configure_tracing(config: &Config) {
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opentelemetry::global::set_text_map_propagator(opentelemetry_jaeger::Propagator::new());
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let env = std::env::var("ENVIRONMENT");
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@ -103,10 +148,10 @@ async fn main() {
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KeyValue::new("environment", env.to_owned()),
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KeyValue::new("version", env!("CARGO_PKG_VERSION")),
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])
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.install_batch(opentelemetry::runtime::AsyncStd)
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.install_batch(opentelemetry::runtime::Tokio)
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.expect("otel jaeger pipeline could not be created");
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let trace = tracing_opentelemetry::layer().with_tracer(tracer.clone());
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let trace = tracing_opentelemetry::layer().with_tracer(tracer);
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tracing::subscriber::set_global_default(
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tracing_subscriber::Registry::default()
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.with(tracing_subscriber::EnvFilter::from_default_env())
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@ -114,59 +159,15 @@ async fn main() {
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.with(tracing_subscriber::fmt::layer()),
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)
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.expect("tracing could not be configured");
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tracing::info!("starting bkbase");
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tracing::debug!("loaded config");
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let tree: Tree = Arc::new(RwLock::new(bk_tree::BKTree::new(Hamming)));
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let pool = PgPoolOptions::new()
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.max_connections(2)
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.connect(&config.database_url)
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.await
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.expect_or_log("could not connect to database");
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tracing::debug!("connected to postgres");
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let http_listen = config.http_listen.clone();
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let max_distance = config.max_distance;
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let (sender, receiver) = futures::channel::oneshot::channel();
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tracing::info!("starting to listen for payloads");
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let tree_clone = tree.clone();
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async_std::task::spawn(async {
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listen_for_payloads(pool, config, tree_clone, sender)
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.await
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.expect_or_log("listenting for updates failed");
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});
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tracing::info!("waiting for initial tree to load");
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receiver
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.await
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.expect_or_log("tree loading was dropped before completing");
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tracing::info!("initial tree loaded, starting server");
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let mut app = tide::with_state(State { tree, max_distance });
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app.with(middlewares::TideOpentelemMiddleware::new(tracer));
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app.with(tide_tracing::TraceMiddleware::new());
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app.with(middlewares::TidePrometheusMiddleware);
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app.at("/search").get(search);
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app.at("/health").get(|_| async { Ok("OK") });
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app.listen(&http_listen)
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.await
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.expect_or_log("could not start web server");
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}
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#[derive(Clone)]
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struct State {
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tree: Tree,
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tree: tree::Tree,
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max_distance: Option<u32>,
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}
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#[derive(serde::Deserialize)]
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#[derive(Debug, serde::Deserialize)]
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struct Query {
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hash: i64,
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distance: u32,
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@ -186,21 +187,23 @@ struct SearchResponse {
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hashes: Vec<HashDistance>,
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}
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#[tracing::instrument(skip(req))]
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async fn search(req: Request<State>) -> tide::Result {
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let state = req.state();
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#[get("/search")]
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#[tracing::instrument(skip(query, tree, config), fields(query = ?query.0))]
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async fn search(
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query: web::Query<Query>,
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tree: Data<tree::Tree>,
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config: Data<Config>,
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) -> Result<HttpResponse, std::convert::Infallible> {
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let Query { hash, distance } = query.0;
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let max_distance = config.max_distance;
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let Query { hash, distance } = req.query()?;
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tracing::info!("searching for hash {} with distance {}", hash, distance);
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if matches!(state.max_distance, Some(max_distance) if distance > max_distance) {
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return Err(tide::Error::from_str(
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400,
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"Distance is greater than max distance",
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));
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if matches!(max_distance, Some(max_distance) if distance > max_distance) {
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return Ok(HttpResponse::BadRequest().body("distance is greater than max distance"));
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}
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let tree = state.tree.read().await;
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let tree = tree.read().await;
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let duration = TREE_DURATION
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.with_label_values(&[&distance.to_string()])
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@ -223,113 +226,21 @@ async fn search(req: Request<State>) -> tide::Result {
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hashes: matches,
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};
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Ok(serde_json::to_string(&resp)?.into())
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Ok(HttpResponse::Ok().json(resp))
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}
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/// Create a new BK tree and pull in all hashes from provided query.
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///
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/// This must be called after you have started a listener, otherwise items may
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/// be lost.
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async fn create_tree(
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conn: &Pool<Postgres>,
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config: &Config,
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) -> Result<bk_tree::BKTree<Node, Hamming>, Error> {
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use futures::TryStreamExt;
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tracing::warn!("creating new tree");
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let mut tree = bk_tree::BKTree::new(Hamming);
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let mut rows = sqlx::query(&config.database_query).fetch(conn);
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let mut count = 0;
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let start = std::time::Instant::now();
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while let Some(row) = rows.try_next().await.map_err(Error::LoadingRow)? {
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let node: Node = row.get::<i64, _>(0).into();
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// Avoid checking if each value is unique if we were told that the
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// database query only returns unique values.
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let timer = TREE_ADD_DURATION.start_timer();
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if config.database_is_unique || tree.find_exact(&node).is_none() {
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tree.add(node);
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}
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timer.stop_and_record();
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count += 1;
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if count % 250_000 == 0 {
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tracing::debug!(count, "loaded more rows");
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}
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#[get("/health")]
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async fn health() -> impl Responder {
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"OK"
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}
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let dur = std::time::Instant::now().duration_since(start);
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#[get("/metrics")]
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async fn metrics() -> Result<HttpResponse, std::convert::Infallible> {
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let mut buffer = Vec::new();
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let encoder = TextEncoder::new();
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tracing::info!(count, "completed loading rows in {:?}", dur);
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let metric_families = prometheus::gather();
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encoder.encode(&metric_families, &mut buffer).unwrap();
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Ok(tree)
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}
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#[derive(serde::Deserialize)]
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struct Payload {
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hash: i64,
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}
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|
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/// Listen for incoming payloads.
|
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///
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/// This will create a new tree to ensure all items are present. It will also
|
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/// automatically recreate trees as needed if the database connection is lost.
|
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async fn listen_for_payloads(
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conn: Pool<Postgres>,
|
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config: Config,
|
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tree: Tree,
|
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initial: futures::channel::oneshot::Sender<()>,
|
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) -> Result<(), Error> {
|
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let mut listener = PgListener::connect_with(&conn)
|
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.await
|
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.map_err(Error::Listener)?;
|
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listener
|
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.listen(&config.database_subscribe)
|
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.await
|
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.map_err(Error::Listener)?;
|
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|
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let new_tree = create_tree(&conn, &config).await?;
|
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{
|
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let mut tree = tree.write().await;
|
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*tree = new_tree;
|
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}
|
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|
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initial
|
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.send(())
|
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.expect_or_log("nothing listening for initial data");
|
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|
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loop {
|
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while let Some(notification) = listener.try_recv().await.map_err(Error::Listener)? {
|
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let payload: Payload =
|
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serde_json::from_str(notification.payload()).map_err(Error::Data)?;
|
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tracing::debug!(hash = payload.hash, "evaluating new payload");
|
||||
|
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let node: Node = payload.hash.into();
|
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|
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let _timer = TREE_ADD_DURATION.start_timer();
|
||||
|
||||
let tree = tree.upgradable_read().await;
|
||||
if tree.find_exact(&node).is_some() {
|
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tracing::trace!("hash already existed in tree");
|
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continue;
|
||||
}
|
||||
|
||||
tracing::trace!("hash did not exist, adding to tree");
|
||||
let mut tree = RwLockUpgradableReadGuard::upgrade(tree).await;
|
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tree.add(node);
|
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}
|
||||
|
||||
tracing::error!("disconnected from listener, recreating tree");
|
||||
async_std::task::sleep(std::time::Duration::from_secs(10)).await;
|
||||
let new_tree = create_tree(&conn, &config).await?;
|
||||
{
|
||||
let mut tree = tree.write().await;
|
||||
*tree = new_tree;
|
||||
}
|
||||
}
|
||||
Ok(HttpResponse::Ok().body(buffer))
|
||||
}
|
||||
|
||||
@ -1,139 +0,0 @@
|
||||
use std::collections::HashMap;
|
||||
use std::convert::TryFrom;
|
||||
|
||||
use opentelemetry::{
|
||||
global::get_text_map_propagator,
|
||||
trace::{FutureExt, Span, SpanKind, TraceContextExt, Tracer},
|
||||
Context,
|
||||
};
|
||||
use opentelemetry_semantic_conventions::trace;
|
||||
use prometheus::{Encoder, TextEncoder};
|
||||
use tide::{
|
||||
http::{
|
||||
headers::{HeaderName, HeaderValue},
|
||||
mime,
|
||||
},
|
||||
Middleware, Request, Response,
|
||||
};
|
||||
|
||||
pub struct TidePrometheusMiddleware;
|
||||
|
||||
impl TidePrometheusMiddleware {
|
||||
const ROUTE: &'static str = "/metrics";
|
||||
}
|
||||
|
||||
#[tide::utils::async_trait]
|
||||
impl<State: Clone + Send + Sync + 'static> Middleware<State> for TidePrometheusMiddleware {
|
||||
async fn handle(&self, req: Request<State>, next: tide::Next<'_, State>) -> tide::Result {
|
||||
let path = req.url().path().to_owned();
|
||||
|
||||
if path == Self::ROUTE {
|
||||
let mut buffer = Vec::new();
|
||||
let encoder = TextEncoder::new();
|
||||
|
||||
let metric_families = prometheus::gather();
|
||||
encoder.encode(&metric_families, &mut buffer).unwrap();
|
||||
|
||||
return Ok(Response::builder(200)
|
||||
.body(buffer)
|
||||
.content_type(mime::PLAIN)
|
||||
.build());
|
||||
}
|
||||
|
||||
let method = req.method().to_string();
|
||||
|
||||
let start = std::time::Instant::now();
|
||||
let res = next.run(req).await;
|
||||
let end = std::time::Instant::now().duration_since(start);
|
||||
|
||||
let status_code = res.status().to_string();
|
||||
|
||||
let labels: Vec<&str> = vec![&path, &method, &status_code];
|
||||
|
||||
crate::HTTP_REQUEST_COUNT.with_label_values(&labels).inc();
|
||||
crate::HTTP_REQUEST_DURATION
|
||||
.with_label_values(&labels)
|
||||
.observe(end.as_secs_f64());
|
||||
|
||||
Ok(res)
|
||||
}
|
||||
}
|
||||
|
||||
pub struct TideOpentelemMiddleware<T: Tracer> {
|
||||
tracer: T,
|
||||
}
|
||||
|
||||
impl<T: Tracer> TideOpentelemMiddleware<T> {
|
||||
pub fn new(tracer: T) -> Self {
|
||||
Self { tracer }
|
||||
}
|
||||
}
|
||||
|
||||
#[tide::utils::async_trait]
|
||||
impl<T: Tracer + Send + Sync, State: Clone + Send + Sync + 'static> Middleware<State>
|
||||
for TideOpentelemMiddleware<T>
|
||||
{
|
||||
async fn handle(&self, req: Request<State>, next: tide::Next<'_, State>) -> tide::Result {
|
||||
let parent_cx = get_parent_cx(&req);
|
||||
|
||||
let method = req.method().to_string();
|
||||
let url = req.url();
|
||||
|
||||
let attributes = vec![
|
||||
trace::HTTP_METHOD.string(method.clone()),
|
||||
trace::HTTP_SCHEME.string(url.scheme().to_string()),
|
||||
trace::HTTP_URL.string(url.to_string()),
|
||||
];
|
||||
|
||||
let mut span_builder = self
|
||||
.tracer
|
||||
.span_builder(format!("{} {}", method, url.path()))
|
||||
.with_kind(SpanKind::Server)
|
||||
.with_attributes(attributes);
|
||||
|
||||
if parent_cx.span().span_context().is_remote() {
|
||||
tracing::trace!("incoming request has remote span: {:?}", parent_cx);
|
||||
span_builder = span_builder.with_parent_context(parent_cx);
|
||||
}
|
||||
|
||||
let mut span = span_builder.start(&self.tracer);
|
||||
span.add_event("request.started".to_owned(), vec![]);
|
||||
let cx = &Context::current_with_span(span);
|
||||
|
||||
let mut res = next.run(req).with_context(cx.clone()).await;
|
||||
|
||||
let span = cx.span();
|
||||
span.add_event("request.completed".to_owned(), vec![]);
|
||||
span.set_attribute(trace::HTTP_STATUS_CODE.i64(u16::from(res.status()).into()));
|
||||
|
||||
if let Some(len) = res.len().and_then(|len| i64::try_from(len).ok()) {
|
||||
span.set_attribute(trace::HTTP_RESPONSE_CONTENT_LENGTH.i64(len));
|
||||
}
|
||||
|
||||
let mut injector = HashMap::new();
|
||||
get_text_map_propagator(|propagator| propagator.inject_context(&cx, &mut injector));
|
||||
|
||||
for (key, value) in injector {
|
||||
let header_name = HeaderName::from_bytes(key.into_bytes());
|
||||
let header_value = HeaderValue::from_bytes(value.into_bytes());
|
||||
|
||||
if let (Ok(name), Ok(value)) = (header_name, header_value) {
|
||||
res.insert_header(name, value);
|
||||
} else {
|
||||
tracing::error!("injected header data was invalid");
|
||||
}
|
||||
}
|
||||
|
||||
Ok(res)
|
||||
}
|
||||
}
|
||||
|
||||
fn get_parent_cx<State>(req: &Request<State>) -> Context {
|
||||
let mut req_headers = HashMap::new();
|
||||
|
||||
for (key, value) in req.iter() {
|
||||
req_headers.insert(key.to_string(), value.last().to_string());
|
||||
}
|
||||
|
||||
get_text_map_propagator(|propagator| propagator.extract(&req_headers))
|
||||
}
|
||||
143
src/tree.rs
Normal file
143
src/tree.rs
Normal file
@ -0,0 +1,143 @@
|
||||
use std::sync::Arc;
|
||||
|
||||
use sqlx::{postgres::PgListener, Pool, Postgres, Row};
|
||||
use tokio::sync::RwLock;
|
||||
use tracing_unwrap::ResultExt;
|
||||
|
||||
use crate::{Config, Error};
|
||||
|
||||
pub(crate) type Tree = Arc<RwLock<bk_tree::BKTree<Node, Hamming>>>;
|
||||
|
||||
/// A hamming distance metric.
|
||||
pub(crate) struct Hamming;
|
||||
|
||||
impl bk_tree::Metric<Node> for Hamming {
|
||||
fn distance(&self, a: &Node, b: &Node) -> u32 {
|
||||
hamming::distance_fast(&a.0, &b.0).expect_or_log("hashes did not have same byte alignment")
|
||||
as u32
|
||||
}
|
||||
|
||||
fn threshold_distance(&self, a: &Node, b: &Node, _threshold: u32) -> Option<u32> {
|
||||
Some(self.distance(a, b))
|
||||
}
|
||||
}
|
||||
|
||||
/// A value of a node in the BK tree.
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
||||
pub(crate) struct Node([u8; 8]);
|
||||
|
||||
impl From<i64> for Node {
|
||||
fn from(num: i64) -> Self {
|
||||
Self(num.to_be_bytes())
|
||||
}
|
||||
}
|
||||
|
||||
impl From<Node> for i64 {
|
||||
fn from(node: Node) -> Self {
|
||||
i64::from_be_bytes(node.0)
|
||||
}
|
||||
}
|
||||
|
||||
/// Create a new BK tree and pull in all hashes from provided query.
|
||||
///
|
||||
/// This must be called after you have started a listener, otherwise items may
|
||||
/// be lost.
|
||||
async fn create_tree(
|
||||
conn: &Pool<Postgres>,
|
||||
config: &Config,
|
||||
) -> Result<bk_tree::BKTree<Node, Hamming>, Error> {
|
||||
use futures::TryStreamExt;
|
||||
|
||||
tracing::warn!("creating new tree");
|
||||
let mut tree = bk_tree::BKTree::new(Hamming);
|
||||
let mut rows = sqlx::query(&config.database_query).fetch(conn);
|
||||
|
||||
let mut count = 0;
|
||||
|
||||
let start = std::time::Instant::now();
|
||||
|
||||
while let Some(row) = rows.try_next().await.map_err(Error::LoadingRow)? {
|
||||
let node: Node = row.get::<i64, _>(0).into();
|
||||
|
||||
// Avoid checking if each value is unique if we were told that the
|
||||
// database query only returns unique values.
|
||||
let timer = crate::TREE_ADD_DURATION.start_timer();
|
||||
if config.database_is_unique || tree.find_exact(&node).is_none() {
|
||||
tree.add(node);
|
||||
}
|
||||
timer.stop_and_record();
|
||||
|
||||
count += 1;
|
||||
if count % 250_000 == 0 {
|
||||
tracing::debug!(count, "loaded more rows");
|
||||
}
|
||||
}
|
||||
|
||||
let dur = std::time::Instant::now().duration_since(start);
|
||||
|
||||
tracing::info!(count, "completed loading rows in {:?}", dur);
|
||||
Ok(tree)
|
||||
}
|
||||
|
||||
#[derive(serde::Deserialize)]
|
||||
struct Payload {
|
||||
hash: i64,
|
||||
}
|
||||
|
||||
/// Listen for incoming payloads.
|
||||
///
|
||||
/// This will create a new tree to ensure all items are present. It will also
|
||||
/// automatically recreate trees as needed if the database connection is lost.
|
||||
pub(crate) async fn listen_for_payloads(
|
||||
conn: Pool<Postgres>,
|
||||
config: Config,
|
||||
tree: Tree,
|
||||
initial: futures::channel::oneshot::Sender<()>,
|
||||
) -> Result<(), Error> {
|
||||
let mut listener = PgListener::connect_with(&conn)
|
||||
.await
|
||||
.map_err(Error::Listener)?;
|
||||
listener
|
||||
.listen(&config.database_subscribe)
|
||||
.await
|
||||
.map_err(Error::Listener)?;
|
||||
|
||||
let new_tree = create_tree(&conn, &config).await?;
|
||||
{
|
||||
let mut tree = tree.write().await;
|
||||
*tree = new_tree;
|
||||
}
|
||||
|
||||
initial
|
||||
.send(())
|
||||
.expect_or_log("nothing listening for initial data");
|
||||
|
||||
loop {
|
||||
while let Some(notification) = listener.try_recv().await.map_err(Error::Listener)? {
|
||||
let payload: Payload =
|
||||
serde_json::from_str(notification.payload()).map_err(Error::Data)?;
|
||||
tracing::debug!(hash = payload.hash, "evaluating new payload");
|
||||
|
||||
let node: Node = payload.hash.into();
|
||||
|
||||
let _timer = crate::TREE_ADD_DURATION.start_timer();
|
||||
|
||||
let mut tree = tree.write().await;
|
||||
if tree.find_exact(&node).is_some() {
|
||||
tracing::trace!("hash already existed in tree");
|
||||
continue;
|
||||
}
|
||||
|
||||
tracing::trace!("hash did not exist, adding to tree");
|
||||
tree.add(node);
|
||||
}
|
||||
|
||||
tracing::error!("disconnected from listener, recreating tree");
|
||||
tokio::time::sleep(std::time::Duration::from_secs(10)).await;
|
||||
let new_tree = create_tree(&conn, &config).await?;
|
||||
{
|
||||
let mut tree = tree.write().await;
|
||||
*tree = new_tree;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user