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Merge pull request #886 from ethcore/ipc-nano

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ipc rpc with nano transport (simple duplex)
This commit is contained in:
Arkadiy Paronyan 2016-04-06 13:22:59 +02:00
commit 460d5bffd7
4 changed files with 334 additions and 65 deletions
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167
ipc/codegen/src/codegen.rs
View File

@ -145,14 +145,20 @@ struct Dispatch {
return_type_ty: Option<P<Ty>>,
}
fn implement_dispatch_arm_invoke(
// This is the expanded version of this:
//
// let invoke_serialize_stmt = quote_stmt!(cx, {
// ::bincode::serde::serialize(& $output_type_id { payload: self. $function_name ($hand_param_a, $hand_param_b) }, ::bincode::SizeLimit::Infinite).unwrap()
// });
//
// But the above does not allow comma-separated expressions for arbitrary number
// of parameters ...$hand_param_a, $hand_param_b, ... $hand_param_n
fn implement_dispatch_arm_invoke_stmt(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
dispatch: &Dispatch,
) -> P<ast::Expr>
) -> ast::Stmt
{
let deserialize_expr = quote_expr!(cx, ::bincode::serde::deserialize_from(r, ::bincode::SizeLimit::Infinite).expect("ipc deserialization error, aborting"));
let input_type_id = builder.id(dispatch.input_type_name.clone().unwrap().as_str());
let function_name = builder.id(dispatch.function_name.as_str());
let output_type_id = builder.id(dispatch.return_type_name.clone().unwrap().as_str());
@ -161,63 +167,71 @@ fn implement_dispatch_arm_invoke(
quote_expr!(cx, input. $arg_ident)
}).collect::<Vec<P<ast::Expr>>>();
// This is the expanded version of this:
//
// let invoke_serialize_stmt = quote_stmt!(cx, {
// ::bincode::serde::serialize(& $output_type_id { payload: self. $function_name ($hand_param_a, $hand_param_b) }, ::bincode::SizeLimit::Infinite).unwrap()
// });
//
// But the above does not allow comma-separated expressions for arbitrary number
// of parameters ...$hand_param_a, $hand_param_b, ... $hand_param_n
let invoke_serialize_stmt = {
let ext_cx = &*cx;
::quasi::parse_stmt_panic(&mut ::syntax::parse::new_parser_from_tts(
ext_cx.parse_sess(),
ext_cx.cfg(),
{
let _sp = ext_cx.call_site();
let mut tt = ::std::vec::Vec::new();
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Brace)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("bincode"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("serde"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("serialize"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::BinOp(::syntax::parse::token::And)));
tt.extend(::quasi::ToTokens::to_tokens(&output_type_id, ext_cx).into_iter());
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Brace)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("payload"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Colon));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("self"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Dot));
tt.extend(::quasi::ToTokens::to_tokens(&function_name, ext_cx).into_iter());
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Paren)));
let ext_cx = &*cx;
::quasi::parse_stmt_panic(&mut ::syntax::parse::new_parser_from_tts(
ext_cx.parse_sess(),
ext_cx.cfg(),
{
let _sp = ext_cx.call_site();
let mut tt = ::std::vec::Vec::new();
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Brace)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("bincode"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("serde"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("serialize"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::BinOp(::syntax::parse::token::And)));
tt.extend(::quasi::ToTokens::to_tokens(&output_type_id, ext_cx).into_iter());
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Brace)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("payload"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Colon));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("self"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Dot));
tt.extend(::quasi::ToTokens::to_tokens(&function_name, ext_cx).into_iter());
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Paren)));
for arg_expr in input_args_exprs {
tt.extend(::quasi::ToTokens::to_tokens(&arg_expr, ext_cx).into_iter());
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Comma));
}
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Brace)));
for arg_expr in input_args_exprs {
tt.extend(::quasi::ToTokens::to_tokens(&arg_expr, ext_cx).into_iter());
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Comma));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("bincode"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("SizeLimit"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("Infinite"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Dot));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("unwrap"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Brace)));
tt
}))
}
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Brace)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Comma));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("bincode"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("SizeLimit"), ::syntax::parse::token::ModName)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::ModSep));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("Infinite"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Dot));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::Ident(ext_cx.ident_of("unwrap"), ::syntax::parse::token::Plain)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::OpenDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Paren)));
tt.push(::syntax::ast::TokenTree::Token(_sp, ::syntax::parse::token::CloseDelim(::syntax::parse::token::Brace)));
tt
})).unwrap()
}
fn implement_dispatch_arm_invoke(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
dispatch: &Dispatch,
buffer: bool,
) -> P<ast::Expr>
{
let deserialize_expr = if buffer {
quote_expr!(cx, ::bincode::serde::deserialize(buf).expect("ipc deserialization error, aborting"))
} else {
quote_expr!(cx, ::bincode::serde::deserialize_from(r, ::bincode::SizeLimit::Infinite).expect("ipc deserialization error, aborting"))
};
let input_type_id = builder.id(dispatch.input_type_name.clone().unwrap().as_str());
let invoke_serialize_stmt = implement_dispatch_arm_invoke_stmt(cx, builder, dispatch);
quote_expr!(cx, {
let input: $input_type_id = $deserialize_expr;
$invoke_serialize_stmt
@ -225,14 +239,31 @@ fn implement_dispatch_arm_invoke(
}
/// generates dispatch match for method id
fn implement_dispatch_arm(cx: &ExtCtxt, builder: &aster::AstBuilder, index: u32, dispatch: &Dispatch)
-> ast::Arm
fn implement_dispatch_arm(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
index: u32,
dispatch: &Dispatch,
buffer: bool,
) -> ast::Arm
{
let index_ident = builder.id(format!("{}", index).as_str());
let invoke_expr = implement_dispatch_arm_invoke(cx, builder, dispatch);
let invoke_expr = implement_dispatch_arm_invoke(cx, builder, dispatch, buffer);
quote_arm!(cx, $index_ident => { $invoke_expr } )
}
fn implement_dispatch_arms(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
dispatches: &[Dispatch],
buffer: bool,
) -> Vec<ast::Arm>
{
let mut index = -1;
dispatches.iter()
.map(|dispatch| { index = index + 1; implement_dispatch_arm(cx, builder, index as u32, dispatch, buffer) }).collect()
}
/// generates client type for specified server type
/// for say `Service` it generates `ServiceClient`
fn push_client_struct(cx: &ExtCtxt, builder: &aster::AstBuilder, item: &Item, push: &mut FnMut(Annotatable)) {
@ -511,9 +542,9 @@ fn implement_interface(
dispatch_table.push(push_invoke_signature_aster(builder, &impl_item, signature, push));
}
}
let mut index = -1;
let dispatch_arms: Vec<_> = dispatch_table.iter()
.map(|dispatch| { index = index + 1; implement_dispatch_arm(cx, builder, index as u32, dispatch) }).collect();
let dispatch_arms = implement_dispatch_arms(cx, builder, &dispatch_table, false);
let dispatch_arms_buffered = implement_dispatch_arms(cx, builder, &dispatch_table, true);
Ok((quote_item!(cx,
impl $impl_generics ::ipc::IpcInterface<$ty> for $ty $where_clause {
@ -531,6 +562,14 @@ fn implement_interface(
_ => vec![]
}
}
fn dispatch_buf(&self, method_num: u16, buf: &[u8]) -> Vec<u8>
{
match method_num {
$dispatch_arms_buffered
_ => vec![]
}
}
}
).unwrap(), dispatch_table))
}

12
ipc/nano/Cargo.toml Normal file
View File

@ -0,0 +1,12 @@
[package]
name = "ethcore-ipc-nano"
version = "1.1.0"
authors = ["Nikolay Volf <nikolay@ethcore.io>"]
license = "GPL-3.0"
[features]
[dependencies]
"ethcore-ipc" = { path = "../rpc" }
nanomsg = "0.5.0"
log = "0.3"

214
ipc/nano/src/lib.rs Normal file
View File

@ -0,0 +1,214 @@
// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! IPC over nanomsg transport
extern crate ethcore_ipc as ipc;
extern crate nanomsg;
#[macro_use] extern crate log;
pub use ipc::*;
use std::sync::*;
use nanomsg::{Socket, Protocol, Error, Endpoint, PollRequest, PollFd, PollInOut};
const POLL_TIMEOUT: isize = 100;
pub struct Worker<S> where S: IpcInterface<S> {
service: Arc<S>,
sockets: Vec<(Socket, Endpoint)>,
polls: Vec<PollFd>,
buf: Vec<u8>,
}
#[derive(Debug)]
pub enum SocketError {
DuplexLink
}
impl<S> Worker<S> where S: IpcInterface<S> {
pub fn new(service: Arc<S>) -> Worker<S> {
Worker::<S> {
service: service.clone(),
sockets: Vec::new(),
polls: Vec::new(),
buf: Vec::new(),
}
}
pub fn poll(&mut self) {
let mut request = PollRequest::new(&mut self.polls[..]);
let _result_guard = Socket::poll(&mut request, POLL_TIMEOUT);
for (fd_index, fd) in request.get_fds().iter().enumerate() {
if fd.can_read() {
let (ref mut socket, _) = self.sockets[fd_index];
unsafe { self.buf.set_len(0); }
match socket.nb_read_to_end(&mut self.buf) {
Ok(method_sign_len) => {
if method_sign_len >= 2 {
// method_num
let method_num = self.buf[1] as u16 * 256 + self.buf[0] as u16;
// payload
let payload = &self.buf[2..];
// dispatching for ipc interface
let result = self.service.dispatch_buf(method_num, payload);
if let Err(e) = socket.nb_write(&result) {
warn!(target: "ipc", "Failed to write response: {:?}", e);
}
}
else {
warn!(target: "ipc", "Failed to read method signature from socket: unexpected message length({})", method_sign_len);
}
},
Err(Error::TryAgain) => {
},
Err(x) => {
warn!(target: "ipc", "Error polling connections {:?}", x);
panic!();
}
}
}
}
}
fn rebuild_poll_request(&mut self) {
self.polls = self.sockets.iter()
.map(|&(ref socket, _)| socket.new_pollfd(PollInOut::In))
.collect::<Vec<PollFd>>();
}
pub fn add_duplex(&mut self, addr: &str) -> Result<(), SocketError> {
let mut socket = try!(Socket::new(Protocol::Pair).map_err(|e| {
warn!(target: "ipc", "Failed to create ipc socket: {:?}", e);
SocketError::DuplexLink
}));
let endpoint = try!(socket.bind(addr).map_err(|e| {
warn!(target: "ipc", "Failed to bind socket to address '{}': {:?}", addr, e);
SocketError::DuplexLink
}));
self.sockets.push((socket, endpoint));
self.rebuild_poll_request();
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::Worker;
use ipc::*;
use std::io::{Read, Write};
use std::sync::{Arc, RwLock};
use nanomsg::{Socket, Protocol, Endpoint};
struct TestInvoke {
method_num: u16,
params: Vec<u8>,
}
struct DummyService {
methods_stack: RwLock<Vec<TestInvoke>>,
}
impl DummyService {
fn new() -> DummyService {
DummyService { methods_stack: RwLock::new(Vec::new()) }
}
}
impl IpcInterface<DummyService> for DummyService {
fn dispatch<R>(&self, _r: &mut R) -> Vec<u8> where R: Read {
vec![]
}
fn dispatch_buf(&self, method_num: u16, buf: &[u8]) -> Vec<u8> {
self.methods_stack.write().unwrap().push(
TestInvoke {
method_num: method_num,
params: buf.to_vec(),
});
vec![]
}
}
fn dummy_write(addr: &str, buf: &[u8]) -> (Socket, Endpoint) {
let mut socket = Socket::new(Protocol::Pair).unwrap();
let endpoint = socket.connect(addr).unwrap();
//thread::sleep_ms(10);
socket.write(buf).unwrap();
(socket, endpoint)
}
#[test]
fn can_create_worker() {
let worker = Worker::<DummyService>::new(Arc::new(DummyService::new()));
assert_eq!(0, worker.sockets.len());
}
#[test]
fn can_add_duplex_socket_to_worker() {
let mut worker = Worker::<DummyService>::new(Arc::new(DummyService::new()));
worker.add_duplex("ipc:///tmp/parity-test10.ipc").unwrap();
assert_eq!(1, worker.sockets.len());
}
#[test]
fn worker_can_poll_empty() {
let service = Arc::new(DummyService::new());
let mut worker = Worker::<DummyService>::new(service.clone());
worker.add_duplex("ipc:///tmp/parity-test20.ipc").unwrap();
worker.poll();
assert_eq!(0, service.methods_stack.read().unwrap().len());
}
#[test]
fn worker_can_poll() {
let url = "ipc:///tmp/parity-test30.ipc";
let mut worker = Worker::<DummyService>::new(Arc::new(DummyService::new()));
worker.add_duplex(url).unwrap();
let (_socket, _endpoint) = dummy_write(url, &vec![0, 0, 7, 7, 6, 6]);
worker.poll();
assert_eq!(1, worker.service.methods_stack.read().unwrap().len());
assert_eq!(0, worker.service.methods_stack.read().unwrap()[0].method_num);
assert_eq!([7, 7, 6, 6], worker.service.methods_stack.read().unwrap()[0].params[..]);
}
#[test]
fn worker_can_poll_long() {
let url = "ipc:///tmp/parity-test40.ipc";
let mut worker = Worker::<DummyService>::new(Arc::new(DummyService::new()));
worker.add_duplex(url).unwrap();
let message = [0u8; 1024*1024];
let (_socket, _endpoint) = dummy_write(url, &message);
worker.poll();
assert_eq!(1, worker.service.methods_stack.read().unwrap().len());
assert_eq!(0, worker.service.methods_stack.read().unwrap()[0].method_num);
assert_eq!(vec![0u8; 1024*1024-2], worker.service.methods_stack.read().unwrap()[0].params);
}
}

6
ipc/rpc/src/interface.rs
View File

@ -21,8 +21,12 @@ use std::marker::Sync;
use std::sync::atomic::*;
pub trait IpcInterface<T> {
/// reads the message from io, dispatches the call and returns result
/// reads the message from io, dispatches the call and returns serialized result
fn dispatch<R>(&self, r: &mut R) -> Vec<u8> where R: Read;
/// deserialize the payload from buffer, dispatches invoke and returns serialized result
/// (for non-blocking io)
fn dispatch_buf(&self, method_num: u16, buf: &[u8]) -> Vec<u8>;
}
/// serializes method invocation (method_num and parameters) to the stream specified by `w`