Unverified Commit 7c74b0fc authored by Alexandru Vasile's avatar Alexandru Vasile
Browse files

examples: WIP tower service


Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>
parent 569f2b6f
Pipeline #204447 failed with stages
in 2 minutes and 3 seconds
......@@ -15,3 +15,6 @@ tracing-subscriber = { version = "0.3.3", features = ["env-filter"] }
tokio = { version = "1.16", features = ["full"] }
tokio-stream = { version = "0.1", features = ["sync"] }
serde_json = { version = "1" }
tower-http = { version = "0.3.4", features = ["full"] }
tower = { version = "0.4.13", features = ["full"] }
hyper = "0.14.20"
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
//
// Permission is hereby granted, free of charge, to any
// person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the
// Software without restriction, including without
// limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice
// shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
// IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
use hyper::Server;
use std::iter::once;
use std::net::SocketAddr;
use std::time::Instant;
use tokio::net::TcpListener;
use tower_http::sensitive_headers::SetSensitiveRequestHeadersLayer;
use tower_http::trace::TraceLayer;
use jsonrpsee::core::client::ClientT;
use jsonrpsee::core::middleware::{self, Headers, Params};
use jsonrpsee::http_client::HttpClientBuilder;
use jsonrpsee::http_server::{HttpServerBuilder, HttpServerHandle, RpcModule};
#[derive(Clone)]
struct Timings;
impl middleware::HttpMiddleware for Timings {
type Instant = Instant;
fn on_request(&self, remote_addr: SocketAddr, headers: &Headers) -> Self::Instant {
println!("[Middleware::on_request] remote_addr {}, headers: {:?}", remote_addr, headers);
Instant::now()
}
fn on_call(&self, name: &str, params: Params, kind: middleware::MethodKind) {
println!("[Middleware::on_call] method: '{}', params: {:?}, kind: {}", name, params, kind);
}
fn on_result(&self, name: &str, succeess: bool, started_at: Self::Instant) {
println!("[Middleware::on_result] '{}', worked? {}, time elapsed {:?}", name, succeess, started_at.elapsed());
}
fn on_response(&self, result: &str, started_at: Self::Instant) {
println!("[Middleware::on_response] result: {}, time elapsed {:?}", result, started_at.elapsed());
}
}
#[tokio::main]
async fn main() -> anyhow::Result<()> {
tracing_subscriber::FmtSubscriber::builder()
.with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
.try_init()
.expect("setting default subscriber failed");
let addr = run_server().await?;
let url = format!("http://{}", addr);
println!("[main]: URL {:?}", url);
let client = HttpClientBuilder::default().build(&url)?;
let response: String = client.request("say_hello", None).await?;
println!("[main]: response: {:?}", response);
let _response: Result<String, _> = client.request("unknown_method", None).await;
let _ = client.request::<String>("say_hello", None).await?;
Ok(())
}
async fn run_server() -> anyhow::Result<SocketAddr> {
let mut module = RpcModule::new(());
module.register_method("say_hello", |_, _| Ok("lo"))?;
println!("[run_server]: Creating RPC service");
let rpc_service = HttpServerBuilder::new().set_middleware(Timings).pre_build().to_service(module);
println!("[run_server]: Tower builder");
let service_builder = tower::ServiceBuilder::new()
// Mark the `Authorization` request header as sensitive so it doesn't show in logs
.layer(SetSensitiveRequestHeadersLayer::new(once(hyper::header::AUTHORIZATION)))
.service(rpc_service);
let addr = SocketAddr::from(([127, 0, 0, 1], 9935));
println!("[run_server]: Bind server");
tokio::spawn(async move { Server::bind(&addr).serve(service_builder).expect("server error") });
Ok(addr)
}
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