mirror of
https://github.com/OMGeeky/tarpc.git
synced 2026-01-07 03:56:48 +01:00
be5f55c5f6
* Extend snake_to_camel plugin to replace {} in the doc string with the origin snake-cased ident.
Also, track tokio-rs master.
This is really ad-hoc, undiscoverable, and unintuitive, but there's no way to programmatically create doc strings
in regular code, and I want to produce better doc strings for the associated types.
Given `fn foo_bar`:
Before: `/// The type of future returned by the function of the same name.`
After: ``/// The type of future returned by `{}`.``
=> `/// The type of future returned by foo_bar.`
* Fix some docs
* Use a helper fn on pipeline::Frame instead of handrolled match.
* Don't hide docs for ClientFuture.
It's exposed in the Connect impl of FutureService -- the tradeoff for not generating *another* item -- and hiding it breaks doc links.
* Formatting
* Rename snake_to_camel plugin => tarpc-plugins
* Update README
* Mangle a lot of names in macro expansion.
To lower the chance of any issues, prefix idents in service expansion with __tarpc_service.
In future_enum, prefix with __future_enum. The pattern is basically __macro_name_ident.
Any imported enum variant will conflict with a let binding or a function arg, so we basically
can't use any generic idents at all. Example:
enum Req { request(..) }
use self::Req::request;
fn make_request(request: Request) { ... }
^^^^^^^ conflict here
Additionally, suffix generated associated types with Fut to avoid conflicts with camelcased rpcs.
Why someone would do that, I don't know, but we shouldn't allow that wart.
110 lines
3.0 KiB
Rust
110 lines
3.0 KiB
Rust
// Copyright 2016 Google Inc. All Rights Reserved.
|
|
//
|
|
// Licensed under the MIT License, <LICENSE or http://opensource.org/licenses/MIT>.
|
|
// This file may not be copied, modified, or distributed except according to those terms.
|
|
|
|
use serde;
|
|
use futures::{self, Async};
|
|
use bincode::{SizeLimit, serde as bincode};
|
|
use std::{io, thread};
|
|
use std::collections::VecDeque;
|
|
use std::sync::mpsc;
|
|
use util::Never;
|
|
use tokio_core::io::{FramedIo, Io};
|
|
use tokio_core::reactor::{Core, Remote};
|
|
use tokio_proto::pipeline::Frame;
|
|
|
|
lazy_static! {
|
|
#[doc(hidden)]
|
|
pub static ref LOOP_HANDLE: Remote = {
|
|
let (tx, rx) = mpsc::channel();
|
|
thread::spawn(move || {
|
|
let mut lupe = Core::new().unwrap();
|
|
tx.send(lupe.handle().remote().clone()).unwrap();
|
|
// Run forever
|
|
lupe.run(futures::empty::<(), !>()).unwrap();
|
|
});
|
|
rx.recv().unwrap()
|
|
};
|
|
}
|
|
|
|
pub use self::writer::Packet;
|
|
|
|
pub mod reader;
|
|
pub mod writer;
|
|
|
|
/// A helper trait to provide the `map_non_block` function on Results.
|
|
trait MapNonBlock<T> {
|
|
/// Maps a `Result<T>` to a `Result<Option<T>>` by converting
|
|
/// operation-would-block errors into `Ok(None)`.
|
|
fn map_non_block(self) -> io::Result<Option<T>>;
|
|
}
|
|
|
|
impl<T> MapNonBlock<T> for io::Result<T> {
|
|
fn map_non_block(self) -> io::Result<Option<T>> {
|
|
use std::io::ErrorKind::WouldBlock;
|
|
|
|
match self {
|
|
Ok(value) => Ok(Some(value)),
|
|
Err(err) => {
|
|
if let WouldBlock = err.kind() {
|
|
Ok(None)
|
|
} else {
|
|
Err(err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Deserialize a buffer into a `D` and its ID. On error, returns `tarpc::Error`.
|
|
pub fn deserialize<D: serde::Deserialize>(mut buf: &[u8]) -> Result<D, bincode::DeserializeError> {
|
|
bincode::deserialize_from(&mut buf, SizeLimit::Infinite)
|
|
}
|
|
|
|
pub struct TarpcTransport<T> {
|
|
stream: T,
|
|
read_state: reader::ReadState,
|
|
outbound: VecDeque<Packet>,
|
|
head: Option<Packet>,
|
|
}
|
|
|
|
impl<T> TarpcTransport<T> {
|
|
pub fn new(stream: T) -> Self {
|
|
TarpcTransport {
|
|
stream: stream,
|
|
read_state: reader::ReadState::init(),
|
|
outbound: VecDeque::new(),
|
|
head: None,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<T> FramedIo for TarpcTransport<T>
|
|
where T: Io
|
|
{
|
|
type In = Frame<Packet, Never, io::Error>;
|
|
type Out = Frame<Vec<u8>, Never, io::Error>;
|
|
|
|
fn poll_read(&mut self) -> Async<()> {
|
|
self.stream.poll_read()
|
|
}
|
|
|
|
fn poll_write(&mut self) -> Async<()> {
|
|
self.stream.poll_write()
|
|
}
|
|
|
|
fn read(&mut self) -> io::Result<Async<Frame<Vec<u8>, Never, io::Error>>> {
|
|
self.read_state.next(&mut self.stream)
|
|
}
|
|
|
|
fn write(&mut self, req: Self::In) -> io::Result<Async<()>> {
|
|
self.outbound.push_back(req.unwrap_msg());
|
|
self.flush()
|
|
}
|
|
|
|
fn flush(&mut self) -> io::Result<Async<()>> {
|
|
writer::NextWriteState::next(&mut self.head, &mut self.stream, &mut self.outbound)
|
|
}
|
|
}
|