IPC persistent client link

ipc/codegen/src/codegen.rs

@@ -303,6 +303,7 @@ fn push_client(
 {
 	push_client_struct(cx, builder, item, push);
 	push_client_implementation(cx, builder, dispatches, item, push);
+	push_with_socket_client_implementation(cx, builder, item, push);
 }
 
 /// returns an expression with the body for single operation that is being sent to server
@@ -485,6 +486,25 @@ fn implement_client_method(
 	signature.unwrap()
 }
 
+fn push_with_socket_client_implementation(
+	cx: &ExtCtxt,
+	builder: &aster::AstBuilder,
+	item: &Item,
+	push: &mut FnMut(Annotatable))
+{
+	let client_ident = builder.id(format!("{}Client", item.ident.name.as_str()));
+	let implement = quote_item!(cx,
+		impl<S> ::ipc::WithSocket<S> for $client_ident<S> where S: ::ipc::IpcSocket {
+			fn init(socket: S) -> $client_ident<S> {
+				$client_ident {
+					socket: ::std::cell::RefCell::new(socket),
+					phantom: ::std::marker::PhantomData,
+				}
+			}
+		}).unwrap();
+	push(Annotatable::Item(implement));
+}
+
 /// pushes full client side code for the original class exposed via ipc
 fn push_client_implementation(
 	cx: &ExtCtxt,
@@ -502,18 +522,11 @@ fn push_client_implementation(
 	let item_ident =  builder.id(format!("{}", item.ident.name.as_str()));
 	let implement = quote_item!(cx,
 		impl<S> $client_ident<S> where S: ::ipc::IpcSocket {
-			pub fn new(socket: S) -> $client_ident<S> {
-				$client_ident {
-					socket: ::std::cell::RefCell::new(socket),
-					phantom: ::std::marker::PhantomData,
-				}
-			}
-
 			pub fn handshake(&self) -> Result<(), ::ipc::Error> {
 				let payload = BinHandshake {
 					protocol_version: $item_ident::protocol_version().to_string(),
 					api_version: $item_ident::api_version().to_string(),
-					_reserved: vec![0u8, 64],
+					_reserved: vec![0u8; 64],
 				};
 
 				let mut socket_ref = self.socket.borrow_mut();

ipc/nano/src/lib.rs

@@ -20,10 +20,11 @@ extern crate ethcore_ipc as ipc;
 extern crate nanomsg;
 #[macro_use] extern crate log;
 
-pub use ipc::*;
+pub use ipc::{WithSocket, IpcInterface, IpcConfig};
 
 use std::sync::*;
 use nanomsg::{Socket, Protocol, Error, Endpoint, PollRequest, PollFd, PollInOut};
+use std::ops::Deref;
 
 const POLL_TIMEOUT: isize = 100;
 
@@ -34,6 +35,36 @@ pub struct Worker<S> where S: IpcInterface<S> {
 	buf: Vec<u8>,
 }
 
+pub struct GuardedSocket<S> where S: WithSocket<Socket> {
+	client: Arc<S>,
+	_endpoint: Endpoint,
+}
+
+impl<S> Deref for GuardedSocket<S> where S: WithSocket<Socket> {
+    type Target = S;
+
+    fn deref(&self) -> &S {
+        &self.client
+    }
+}
+
+pub fn init_client<S>(socket_addr: &str) -> Result<GuardedSocket<S>, SocketError> where S: WithSocket<Socket> {
+	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.connect(socket_addr).map_err(|e| {
+		warn!(target: "ipc", "Failed to bind socket to address '{}': {:?}", socket_addr, e);
+		SocketError::DuplexLink
+	}));
+
+	Ok(GuardedSocket {
+		client: Arc::new(S::init(socket)),
+		_endpoint: endpoint,
+	})
+}
+
 #[derive(Debug)]
 pub enum SocketError {
 	DuplexLink
@@ -60,6 +91,7 @@ impl<S> Worker<S> where S: IpcInterface<S> {
 				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
@@ -113,7 +145,7 @@ impl<S> Worker<S> where S: IpcInterface<S> {
 }
 
 #[cfg(test)]
-mod tests {
+mod service_tests {
 
 	use super::Worker;
 	use ipc::*;
@@ -150,10 +182,11 @@ mod tests {
 		}
 	}
 
+	impl IpcConfig for DummyService {}
+
 	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)
 	}

ipc/rpc/Cargo.toml

@@ -9,3 +9,4 @@ license = "GPL-3.0"
 [dependencies]
 ethcore-devtools = { path = "../../devtools" }
 semver = "0.2.0"
+nanomsg = "0.5.0"

ipc/rpc/src/interface.rs

@@ -18,7 +18,6 @@
 
 use std::io::{Read, Write};
 use std::marker::Sync;
-use std::sync::atomic::*;
 use semver::Version;
 
 pub struct Handshake {
@@ -47,7 +46,7 @@ pub enum Error {
 	HandshakeFailed,
 }
 
-pub trait IpcInterface<T> where T: IpcConfig {
+pub trait IpcInterface<T>: IpcConfig {
 	/// reads the message from io, dispatches the call and returns serialized result
 	fn dispatch<R>(&self, r: &mut R) -> Vec<u8> where R: Read;
 
@@ -70,6 +69,7 @@ pub fn invoke<W>(method_num: u16, params: &Option<Vec<u8>>, w: &mut W) where W:
 	if params.is_some() {
 		buf[2..buf_len].clone_from_slice(params.as_ref().unwrap());
 	}
+
 	if w.write(&buf).unwrap() != buf_len
 	{
 		// if write was inconsistent
@@ -81,5 +81,12 @@ pub fn invoke<W>(method_num: u16, params: &Option<Vec<u8>>, w: &mut W) where W:
 pub trait IpcSocket: Read + Write + Sync {
 }
 
-impl IpcSocket for ::devtools::TestSocket {
+
+pub trait WithSocket<S: IpcSocket> {
+	fn init(socket: S) -> Self;
 }
+
+
+impl IpcSocket for ::devtools::TestSocket {}
+
+impl IpcSocket for ::nanomsg::Socket {}

ipc/rpc/src/lib.rs

@@ -18,6 +18,7 @@
 
 extern crate ethcore_devtools as devtools;
 extern crate semver;
+extern crate nanomsg;
 
 pub mod interface;
-pub use interface::{IpcInterface, IpcSocket, invoke, IpcConfig, Handshake, Error};
+pub use interface::{IpcInterface, IpcSocket, invoke, IpcConfig, Handshake, Error, WithSocket};

ipc/tests/Cargo.toml

@@ -13,6 +13,9 @@ bincode = "*"
 serde = "0.7.0"
 ethcore-devtools = { path = "../../devtools" }
 semver = "0.2.0"
+nanomsg = "0.5.0"
+ethcore-ipc-nano = { path = "../nano" }
+
 
 [build-dependencies]
 syntex = "0.30.0"

ipc/tests/examples.rs

@@ -63,7 +63,7 @@ mod tests {
 	fn call_service_client() {
 		let mut socket = TestSocket::new();
 		socket.read_buffer = vec![0, 0, 0, 10];
-		let service_client = ServiceClient::new(socket);
+		let service_client = ServiceClient::init(socket);
 
 		let result = service_client.commit(5);
 
@@ -75,7 +75,7 @@ mod tests {
 	fn call_service_client_optional() {
 		let mut socket = TestSocket::new();
 		socket.read_buffer = vec![0, 0, 0, 10];
-		let service_client = ServiceClient::new(socket);
+		let service_client = ServiceClient::init(socket);
 
 		let result = service_client.rollback(Some(5), 10);
 
@@ -95,7 +95,7 @@ mod tests {
 	fn call_service_client_handshake() {
 		let mut socket = TestSocket::new();
 		socket.read_buffer = vec![1];
-		let service_client = ServiceClient::new(socket);
+		let service_client = ServiceClient::init(socket);
 
 		let result = service_client.handshake();
 

ipc/tests/over_nano.rs

@@ -0,0 +1,109 @@
+// 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/>.
+
+#[cfg(test)]
+mod tests {
+
+	use super::super::service::*;
+	use nanoipc;
+	use std::sync::Arc;
+	use std::io::{Write, Read};
+	use std::sync::atomic::{Ordering, AtomicBool};
+
+	fn dummy_write(addr: &str, buf: &[u8]) -> (::nanomsg::Socket, ::nanomsg::Endpoint) {
+		let mut socket = ::nanomsg::Socket::new(::nanomsg::Protocol::Pair).unwrap();
+		let endpoint = socket.connect(addr).unwrap();
+		socket.write(buf).unwrap();
+		(socket, endpoint)
+	}
+
+
+	fn init_worker(addr: &str) -> nanoipc::Worker<Service> {
+		let mut worker = nanoipc::Worker::<Service>::new(Arc::new(Service::new()));
+		worker.add_duplex(addr).unwrap();
+		worker
+	}
+
+	#[test]
+	fn can_create_client() {
+		let client = nanoipc::init_client::<ServiceClient<_>>("ipc:///tmp/parity-nano-test10.ipc");
+		assert!(client.is_ok());
+	}
+
+	#[test]
+	fn can_call_handshake() {
+		let url = "ipc:///tmp/parity-test-nano-20.ipc";
+		let worker_should_exit = Arc::new(AtomicBool::new(false));
+		let worker_is_ready = Arc::new(AtomicBool::new(false));
+		let c_worker_should_exit = worker_should_exit.clone();
+		let c_worker_is_ready = worker_is_ready.clone();
+
+		::std::thread::spawn(move || {
+			let mut worker = init_worker(url);
+    		while !c_worker_should_exit.load(Ordering::Relaxed) {
+				worker.poll();
+				c_worker_is_ready.store(true, Ordering::Relaxed);
+			}
+		});
+
+		while !worker_is_ready.load(Ordering::Relaxed) { }
+		let client = nanoipc::init_client::<ServiceClient<_>>(url).unwrap();
+
+		let hs = client.handshake();
+
+		worker_should_exit.store(true, Ordering::Relaxed);
+		assert!(hs.is_ok());
+	}
+
+	#[test]
+	fn can_receive_dummy_writes_in_thread() {
+		let url = "ipc:///tmp/parity-test-nano-30.ipc";
+		let worker_should_exit = Arc::new(AtomicBool::new(false));
+		let worker_is_ready = Arc::new(AtomicBool::new(false));
+		let c_worker_should_exit = worker_should_exit.clone();
+		let c_worker_is_ready = worker_is_ready.clone();
+
+		::std::thread::spawn(move || {
+			let mut worker = init_worker(url);
+    		while !c_worker_should_exit.load(Ordering::Relaxed) {
+				worker.poll();
+				c_worker_is_ready.store(true, Ordering::Relaxed);
+			}
+		});
+		while !worker_is_ready.load(Ordering::Relaxed) { }
+
+		let (mut _s, _e) = dummy_write(url, &vec![0, 0,
+			// protocol version
+			0, 0, 0, 0, 0, 0, 0, 5, b'1', b'.', b'0', b'.', b'0',
+			// api version
+			0, 0, 0, 0, 0, 0, 0, 5, b'1', b'.', b'0', b'.', b'0',
+			// reserved
+			0, 0, 0, 0, 0, 0, 0, 64,
+				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+			]);
+
+		let mut buf = vec![0u8;1];
+		_s.read(&mut buf).unwrap();
+		assert_eq!(1, buf.len());
+		assert_eq!(1, buf[0]);
+
+		worker_should_exit.store(true, Ordering::Relaxed);
+	}
+
+}

ipc/tests/run.rs

@@ -19,6 +19,9 @@ extern crate ethcore_ipc as ipc;
 extern crate serde;
 extern crate ethcore_devtools as devtools;
 extern crate semver;
+extern crate nanomsg;
+extern crate ethcore_ipc_nano as nanoipc;
 
 pub mod service;
 mod examples;
+mod over_nano;