133 lines
4.3 KiB
Rust
133 lines
4.3 KiB
Rust
#![deny(warnings)]
|
|
extern crate futures;
|
|
extern crate hyper;
|
|
extern crate pretty_env_logger;
|
|
extern crate serde_json;
|
|
|
|
use futures::{future, Future, Stream};
|
|
|
|
use hyper::{Body, Chunk, Client, Method, Request, Response, Server, StatusCode, header};
|
|
use hyper::client::HttpConnector;
|
|
use hyper::service::service_fn;
|
|
|
|
static NOTFOUND: &[u8] = b"Not Found";
|
|
static URL: &str = "http://127.0.0.1:1337/json_api";
|
|
static INDEX: &[u8] = b"<a href=\"test.html\">test.html</a>";
|
|
static POST_DATA: &str = r#"{"original": "data"}"#;
|
|
|
|
type GenericError = Box<dyn std::error::Error + Send + Sync>;
|
|
type ResponseFuture = Box<dyn Future<Item=Response<Body>, Error=GenericError> + Send>;
|
|
|
|
fn client_request_response(client: &Client<HttpConnector>) -> ResponseFuture {
|
|
let req = Request::builder()
|
|
.method(Method::POST)
|
|
.uri(URL)
|
|
.header(header::CONTENT_TYPE, "application/json")
|
|
.body(POST_DATA.into())
|
|
.unwrap();
|
|
|
|
Box::new(client.request(req).from_err().map(|web_res| {
|
|
// Compare the JSON we sent (before) with what we received (after):
|
|
let body = Body::wrap_stream(web_res.into_body().map(|b| {
|
|
Chunk::from(format!("<b>POST request body</b>: {}<br><b>Response</b>: {}",
|
|
POST_DATA,
|
|
std::str::from_utf8(&b).unwrap()))
|
|
}));
|
|
|
|
Response::new(body)
|
|
}))
|
|
}
|
|
|
|
fn api_post_response(req: Request<Body>) -> ResponseFuture {
|
|
// A web api to run against
|
|
Box::new(req.into_body()
|
|
.concat2() // Concatenate all chunks in the body
|
|
.from_err()
|
|
.and_then(|entire_body| {
|
|
// TODO: Replace all unwraps with proper error handling
|
|
let str = String::from_utf8(entire_body.to_vec())?;
|
|
let mut data : serde_json::Value = serde_json::from_str(&str)?;
|
|
data["test"] = serde_json::Value::from("test_value");
|
|
let json = serde_json::to_string(&data)?;
|
|
let response = Response::builder()
|
|
.status(StatusCode::OK)
|
|
.header(header::CONTENT_TYPE, "application/json")
|
|
.body(Body::from(json))?;
|
|
Ok(response)
|
|
})
|
|
)
|
|
}
|
|
|
|
fn api_get_response() -> ResponseFuture {
|
|
let data = vec!["foo", "bar"];
|
|
let res = match serde_json::to_string(&data) {
|
|
Ok(json) => {
|
|
Response::builder()
|
|
.header(header::CONTENT_TYPE, "application/json")
|
|
.body(Body::from(json))
|
|
.unwrap()
|
|
}
|
|
Err(_) => {
|
|
Response::builder()
|
|
.status(StatusCode::INTERNAL_SERVER_ERROR)
|
|
.body(Body::from("Internal Server Error"))
|
|
.unwrap()
|
|
}
|
|
};
|
|
|
|
Box::new(future::ok(res))
|
|
}
|
|
|
|
fn response_examples(req: Request<Body>, client: &Client<HttpConnector>) -> ResponseFuture {
|
|
match (req.method(), req.uri().path()) {
|
|
(&Method::GET, "/") | (&Method::GET, "/index.html") => {
|
|
let body = Body::from(INDEX);
|
|
Box::new(future::ok(Response::new(body)))
|
|
},
|
|
(&Method::GET, "/test.html") => {
|
|
client_request_response(client)
|
|
},
|
|
(&Method::POST, "/json_api") => {
|
|
api_post_response(req)
|
|
},
|
|
(&Method::GET, "/json_api") => {
|
|
api_get_response()
|
|
}
|
|
_ => {
|
|
// Return 404 not found response.
|
|
let body = Body::from(NOTFOUND);
|
|
Box::new(future::ok(Response::builder()
|
|
.status(StatusCode::NOT_FOUND)
|
|
.body(body)
|
|
.unwrap()))
|
|
}
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
pretty_env_logger::init();
|
|
|
|
let addr = "127.0.0.1:1337".parse().unwrap();
|
|
|
|
hyper::rt::run(future::lazy(move || {
|
|
// Share a `Client` with all `Service`s
|
|
let client = Client::new();
|
|
|
|
let new_service = move || {
|
|
// Move a clone of `client` into the `service_fn`.
|
|
let client = client.clone();
|
|
service_fn(move |req| {
|
|
response_examples(req, &client)
|
|
})
|
|
};
|
|
|
|
let server = Server::bind(&addr)
|
|
.serve(new_service)
|
|
.map_err(|e| eprintln!("server error: {}", e));
|
|
|
|
println!("Listening on http://{}", addr);
|
|
|
|
server
|
|
}));
|
|
}
|