[proxmox-backup.git] / src / server / h2service.rs

use failure::*;

use std::collections::HashMap;
use std::sync::Arc;
use std::task::{Context, Poll};

use futures::*;
use hyper::{Body, Request, Response, StatusCode};

use proxmox::api::{ApiResponseFuture, HttpError, Router, RpcEnvironment};
use proxmox::http_err;

use crate::tools;
use crate::server::formatter::*;
use crate::server::WorkerTask;

/// Hyper Service implementation to handle stateful H2 connections.
///
/// We use this kind of service to handle backup protocol
/// connections. State is stored inside the generic ``rpcenv``. Logs
/// goes into the ``WorkerTask`` log.
pub struct H2Service<E> {
    router: &'static Router,
    rpcenv: E,
    worker: Arc<WorkerTask>,
    debug: bool,
}

impl <E: RpcEnvironment + Clone> H2Service<E> {

    pub fn new(rpcenv: E, worker: Arc<WorkerTask>, router: &'static Router, debug: bool) -> Self {
        Self { rpcenv, worker, router, debug }
    }

    pub fn debug<S: AsRef<str>>(&self, msg: S) {
        if self.debug { self.worker.log(msg); }
    }

    fn handle_request(&self, req: Request<Body>) -> ApiResponseFuture {

        let (parts, body) = req.into_parts();

        let method = parts.method.clone();

        let (path, components) = match tools::normalize_uri_path(parts.uri.path()) {
            Ok((p,c)) => (p, c),
            Err(err) => return future::err(http_err!(BAD_REQUEST, err.to_string())).boxed(),
        };

        self.debug(format!("{} {}", method, path));

        let mut uri_param = HashMap::new();

        let formatter = &JSON_FORMATTER;

        match self.router.find_method(&components, method, &mut uri_param) {
            None => {
                let err = http_err!(NOT_FOUND, "Path not found.".to_string());
                future::ok((formatter.format_error)(err)).boxed()
            }
            Some(api_method) => {
                crate::server::rest::handle_api_request(
                    self.rpcenv.clone(), api_method, formatter, parts, body, uri_param).boxed()
            }
        }
    }

    fn log_response(worker: Arc<WorkerTask>, method: hyper::Method, path: &str, resp: &Response<Body>) {

        let status = resp.status();

        if !status.is_success() {
            let reason = status.canonical_reason().unwrap_or("unknown reason");

            let mut message = "request failed";
            if let Some(data) = resp.extensions().get::<ErrorMessageExtension>() {
                message = &data.0;
            }

            worker.log(format!("{} {}: {} {}: {}", method.as_str(), path, status.as_str(), reason, message));
        }
    }
}

impl <E: RpcEnvironment + Clone> tower_service::Service<Request<Body>> for H2Service<E> {
    type Response = Response<Body>;
    type Error = Error;
    type Future =
        std::pin::Pin<Box<dyn Future<Output = Result<Response<Body>, Self::Error>> + Send>>;

    fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
        Poll::Ready(Ok(()))
    }

    fn call(&mut self, req: Request<Body>) -> Self::Future {
        let path = req.uri().path().to_owned();
        let method = req.method().clone();
        let worker = self.worker.clone();

        std::pin::Pin::from(self.handle_request(req))
            .map(move |result| match result {
                Ok(res) => {
                    Self::log_response(worker, method, &path, &res);
                    Ok::<_, Error>(res)
                }
                Err(err) => {
                     if let Some(apierr) = err.downcast_ref::<HttpError>() {
                        let mut resp = Response::new(Body::from(apierr.message.clone()));
                        resp.extensions_mut().insert(ErrorMessageExtension(apierr.message.clone()));
                        *resp.status_mut() = apierr.code;
                        Self::log_response(worker, method, &path, &resp);
                        Ok(resp)
                    } else {
                        let mut resp = Response::new(Body::from(err.to_string()));
                        resp.extensions_mut().insert(ErrorMessageExtension(err.to_string()));
                        *resp.status_mut() = StatusCode::BAD_REQUEST;
                        Self::log_response(worker, method, &path, &resp);
                        Ok(resp)
                    }
                }
            })
            .boxed()
    }
}
Commit	Line	Data
bd1507c4	1	use failure::*;
bd1507c4 DM	2
	3	use std::collections::HashMap;
	4	use std::sync::Arc;
b9b7f7ec	5	use std::task::{Context, Poll};
bd1507c4 DM	6
	7	use futures::*;
	8	use hyper::{Body, Request, Response, StatusCode};
	9
9ea4bce4 WB	10	use proxmox::api::{ApiResponseFuture, HttpError, Router, RpcEnvironment};
9ea4bce4 WB	11	use proxmox::http_err;
3d482025	12
bd1507c4	13	use crate::tools;
bd1507c4 DM	14	use crate::server::formatter::*;
	15	use crate::server::WorkerTask;
	16
42a87f7b DM	17	/// Hyper Service implementation to handle stateful H2 connections.
	18	///
	19	/// We use this kind of service to handle backup protocol
	20	/// connections. State is stored inside the generic ``rpcenv``. Logs
	21	/// goes into the ``WorkerTask`` log.
	22	pub struct H2Service<E> {
	23	router: &'static Router,
	24	rpcenv: E,
bd1507c4	25	worker: Arc<WorkerTask>,
a42d1f55	26	debug: bool,
bd1507c4 DM	27	}
bd1507c4 DM	28
42a87f7b	29	impl <E: RpcEnvironment + Clone> H2Service<E> {
bd1507c4	30
42a87f7b DM	31	pub fn new(rpcenv: E, worker: Arc<WorkerTask>, router: &'static Router, debug: bool) -> Self {
42a87f7b DM	32	Self { rpcenv, worker, router, debug }
a42d1f55 DM	33	}
	34
	35	pub fn debug<S: AsRef<str>>(&self, msg: S) {
	36	if self.debug { self.worker.log(msg); }
bd1507c4 DM	37	}
bd1507c4 DM	38
bb084b9c	39	fn handle_request(&self, req: Request<Body>) -> ApiResponseFuture {
bd1507c4 DM	40
	41	let (parts, body) = req.into_parts();
	42
	43	let method = parts.method.clone();
	44
	45	let (path, components) = match tools::normalize_uri_path(parts.uri.path()) {
	46	Ok((p,c)) => (p, c),
ad51d02a	47	Err(err) => return future::err(http_err!(BAD_REQUEST, err.to_string())).boxed(),
bd1507c4 DM	48	};
bd1507c4 DM	49
39e60bd6	50	self.debug(format!("{} {}", method, path));
bd1507c4 DM	51
	52	let mut uri_param = HashMap::new();
	53
42a87f7b DM	54	let formatter = &JSON_FORMATTER;
	55
	56	match self.router.find_method(&components, method, &mut uri_param) {
255f378a	57	None => {
bd1507c4	58	let err = http_err!(NOT_FOUND, "Path not found.".to_string());
ad51d02a	59	future::ok((formatter.format_error)(err)).boxed()
bd1507c4	60	}
255f378a	61	Some(api_method) => {
70fbac84 DM	62	crate::server::rest::handle_api_request(
70fbac84 DM	63	self.rpcenv.clone(), api_method, formatter, parts, body, uri_param).boxed()
bd1507c4 DM	64	}
	65	}
	66	}
	67
	68	fn log_response(worker: Arc<WorkerTask>, method: hyper::Method, path: &str, resp: &Response<Body>) {
	69
	70	let status = resp.status();
	71
	72	if !status.is_success() {
	73	let reason = status.canonical_reason().unwrap_or("unknown reason");
	74
	75	let mut message = "request failed";
	76	if let Some(data) = resp.extensions().get::<ErrorMessageExtension>() {
	77	message = &data.0;
	78	}
	79
	80	worker.log(format!("{} {}: {} {}: {}", method.as_str(), path, status.as_str(), reason, message));
	81	}
	82	}
	83	}
	84
b9b7f7ec WB	85	impl <E: RpcEnvironment + Clone> tower_service::Service<Request<Body>> for H2Service<E> {
b9b7f7ec WB	86	type Response = Response<Body>;
642322b4	87	type Error = Error;
b9b7f7ec WB	88	type Future =
b9b7f7ec WB	89	std::pin::Pin<Box<dyn Future<Output = Result<Response<Body>, Self::Error>> + Send>>;
bd1507c4	90
b9b7f7ec WB	91	fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
	92	Poll::Ready(Ok(()))
	93	}
	94
	95	fn call(&mut self, req: Request<Body>) -> Self::Future {
bd1507c4 DM	96	let path = req.uri().path().to_owned();
	97	let method = req.method().clone();
	98	let worker = self.worker.clone();
	99
b9b7f7ec WB	100	std::pin::Pin::from(self.handle_request(req))
b9b7f7ec WB	101	.map(move \|result\| match result {
bd1507c4 DM	102	Ok(res) => {
bd1507c4 DM	103	Self::log_response(worker, method, &path, &res);
642322b4	104	Ok::<_, Error>(res)
bd1507c4 DM	105	}
bd1507c4 DM	106	Err(err) => {
642322b4	107	if let Some(apierr) = err.downcast_ref::<HttpError>() {
bd1507c4	108	let mut resp = Response::new(Body::from(apierr.message.clone()));
907f5bb0	109	resp.extensions_mut().insert(ErrorMessageExtension(apierr.message.clone()));
bd1507c4 DM	110	*resp.status_mut() = apierr.code;
	111	Self::log_response(worker, method, &path, &resp);
	112	Ok(resp)
	113	} else {
	114	let mut resp = Response::new(Body::from(err.to_string()));
907f5bb0	115	resp.extensions_mut().insert(ErrorMessageExtension(err.to_string()));
bd1507c4 DM	116	*resp.status_mut() = StatusCode::BAD_REQUEST;
	117	Self::log_response(worker, method, &path, &resp);
	118	Ok(resp)
	119	}
	120	}
b9b7f7ec WB	121	})
b9b7f7ec WB	122	.boxed()
bd1507c4 DM	123	}
bd1507c4 DM	124	}