refactor(client): only spawn pooled in executor if not ready when response recieved

This commit is contained in:
Sean McArthur
2018-03-13 18:46:52 -07:00
parent 26ec18a282
commit 91b9700862
3 changed files with 130 additions and 105 deletions

View File

@@ -1,4 +1,5 @@
#![deny(warnings)]
extern crate bytes;
extern crate hyper;
extern crate futures;
extern crate tokio_core;
@@ -10,7 +11,7 @@ use std::net::TcpListener;
use std::thread;
use std::time::Duration;
use hyper::client::{Client, Request, HttpConnector};
use hyper::client::{Client, Request};
use hyper::{Method, StatusCode};
use futures::{Future, Stream};
@@ -18,10 +19,6 @@ use futures::sync::oneshot;
use tokio_core::reactor::{Core, Handle};
fn client(handle: &Handle) -> Client<HttpConnector> {
Client::new(handle)
}
fn s(buf: &[u8]) -> &str {
::std::str::from_utf8(buf).unwrap()
}
@@ -647,86 +644,6 @@ test! {
body: None,
}
#[test]
fn client_keep_alive() {
let server = TcpListener::bind("127.0.0.1:0").unwrap();
let addr = server.local_addr().unwrap();
let mut core = Core::new().unwrap();
let client = client(&core.handle());
let (tx1, rx1) = oneshot::channel();
let (tx2, rx2) = oneshot::channel();
thread::spawn(move || {
let mut sock = server.accept().unwrap().0;
sock.set_read_timeout(Some(Duration::from_secs(5))).unwrap();
sock.set_write_timeout(Some(Duration::from_secs(5))).unwrap();
let mut buf = [0; 4096];
sock.read(&mut buf).expect("read 1");
sock.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n").expect("write 1");
let _ = tx1.send(());
let n2 = sock.read(&mut buf).expect("read 2");
assert_ne!(n2, 0);
let second_get = "GET /b HTTP/1.1\r\n";
assert_eq!(s(&buf[..second_get.len()]), second_get);
sock.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n").expect("write 2");
let _ = tx2.send(());
});
let rx = rx1.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let res = client.get(format!("http://{}/a", addr).parse().unwrap());
core.run(res.join(rx).map(|r| r.0)).unwrap();
let rx = rx2.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let res = client.get(format!("http://{}/b", addr).parse().unwrap());
core.run(res.join(rx).map(|r| r.0)).unwrap();
}
#[test]
fn client_keep_alive_extra_body() {
let _ = pretty_env_logger::try_init();
let server = TcpListener::bind("127.0.0.1:0").unwrap();
let addr = server.local_addr().unwrap();
let mut core = Core::new().unwrap();
let client = client(&core.handle());
let (tx1, rx1) = oneshot::channel();
let (tx2, rx2) = oneshot::channel();
thread::spawn(move || {
let mut sock = server.accept().unwrap().0;
sock.set_read_timeout(Some(Duration::from_secs(5))).unwrap();
sock.set_write_timeout(Some(Duration::from_secs(5))).unwrap();
let mut buf = [0; 4096];
sock.read(&mut buf).expect("read 1");
sock.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\nhello").expect("write 1");
// the body "hello", while ignored because its a HEAD request, should mean the connection
// cannot be put back in the pool
let _ = tx1.send(());
let mut sock2 = server.accept().unwrap().0;
let n2 = sock2.read(&mut buf).expect("read 2");
assert_ne!(n2, 0);
let second_get = "GET /b HTTP/1.1\r\n";
assert_eq!(s(&buf[..second_get.len()]), second_get);
sock2.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n").expect("write 2");
let _ = tx2.send(());
});
let rx = rx1.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let req = Request::new(Method::Head, format!("http://{}/a", addr).parse().unwrap());
let res = client.request(req);
core.run(res.join(rx).map(|r| r.0)).unwrap();
let rx = rx2.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let res = client.get(format!("http://{}/b", addr).parse().unwrap());
core.run(res.join(rx).map(|r| r.0)).unwrap();
}
mod dispatch_impl {
use super::*;
@@ -1214,6 +1131,110 @@ mod dispatch_impl {
assert_eq!(connects.load(Ordering::Relaxed), 0);
}
#[test]
fn client_keep_alive_0() {
let _ = pretty_env_logger::try_init();
let server = TcpListener::bind("127.0.0.1:0").unwrap();
let addr = server.local_addr().unwrap();
let mut core = Core::new().unwrap();
let handle = core.handle();
let connector = DebugConnector::new(&handle);
let connects = connector.connects.clone();
let client = Client::configure()
.connector(connector)
.build(&handle);
let (tx1, rx1) = oneshot::channel();
let (tx2, rx2) = oneshot::channel();
thread::spawn(move || {
let mut sock = server.accept().unwrap().0;
//drop(server);
sock.set_read_timeout(Some(Duration::from_secs(5))).unwrap();
sock.set_write_timeout(Some(Duration::from_secs(5))).unwrap();
let mut buf = [0; 4096];
sock.read(&mut buf).expect("read 1");
sock.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n").expect("write 1");
let _ = tx1.send(());
let n2 = sock.read(&mut buf).expect("read 2");
assert_ne!(n2, 0);
let second_get = "GET /b HTTP/1.1\r\n";
assert_eq!(s(&buf[..second_get.len()]), second_get);
sock.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n").expect("write 2");
let _ = tx2.send(());
});
assert_eq!(connects.load(Ordering::Relaxed), 0);
let rx = rx1.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let res = client.get(format!("http://{}/a", addr).parse().unwrap());
core.run(res.join(rx).map(|r| r.0)).unwrap();
assert_eq!(connects.load(Ordering::Relaxed), 1);
let rx = rx2.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let res = client.get(format!("http://{}/b", addr).parse().unwrap());
core.run(res.join(rx).map(|r| r.0)).unwrap();
assert_eq!(connects.load(Ordering::Relaxed), 1, "second request should still only have 1 connect");
}
#[test]
fn client_keep_alive_extra_body() {
let _ = pretty_env_logger::try_init();
let server = TcpListener::bind("127.0.0.1:0").unwrap();
let addr = server.local_addr().unwrap();
let mut core = Core::new().unwrap();
let handle = core.handle();
let connector = DebugConnector::new(&handle);
let connects = connector.connects.clone();
let client = Client::configure()
.connector(connector)
.build(&handle);
let (tx1, rx1) = oneshot::channel();
let (tx2, rx2) = oneshot::channel();
thread::spawn(move || {
let mut sock = server.accept().unwrap().0;
sock.set_read_timeout(Some(Duration::from_secs(5))).unwrap();
sock.set_write_timeout(Some(Duration::from_secs(5))).unwrap();
let mut buf = [0; 4096];
sock.read(&mut buf).expect("read 1");
sock.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\nhello").expect("write 1");
// the body "hello", while ignored because its a HEAD request, should mean the connection
// cannot be put back in the pool
let _ = tx1.send(());
let mut sock2 = server.accept().unwrap().0;
let n2 = sock2.read(&mut buf).expect("read 2");
assert_ne!(n2, 0);
let second_get = "GET /b HTTP/1.1\r\n";
assert_eq!(s(&buf[..second_get.len()]), second_get);
sock2.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n").expect("write 2");
let _ = tx2.send(());
});
assert_eq!(connects.load(Ordering::Relaxed), 0);
let rx = rx1.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let req = Request::new(Method::Head, format!("http://{}/a", addr).parse().unwrap());
let res = client.request(req);
core.run(res.join(rx).map(|r| r.0)).unwrap();
assert_eq!(connects.load(Ordering::Relaxed), 1);
let rx = rx2.map_err(|_| hyper::Error::Io(io::Error::new(io::ErrorKind::Other, "thread panicked")));
let res = client.get(format!("http://{}/b", addr).parse().unwrap());
core.run(res.join(rx).map(|r| r.0)).unwrap();
assert_eq!(connects.load(Ordering::Relaxed), 2);
}
struct DebugConnector {
http: HttpConnector,
@@ -1274,6 +1295,10 @@ mod dispatch_impl {
fn shutdown(&mut self) -> futures::Poll<(), io::Error> {
AsyncWrite::shutdown(&mut self.0)
}
fn write_buf<B: ::bytes::Buf>(&mut self, buf: &mut B) -> futures::Poll<usize, io::Error> {
self.0.write_buf(buf)
}
}
impl Read for DebugStream {