mirror of
https://github.com/OMGeeky/tarpc.git
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d0d65c413a
The basic strategy is to start a reactor on a dedicated thread running a request stream. Requests are spawned onto the reactor, allowing multiple requests to be processed concurrently. For example, if you clone the client to make requests from multiple threads, they won't have to wait for each others' requests to complete before theirs start being sent out. Also, client rpcs only take &self now, which was also required for clients to be usable in a service. Also added a test to prevent regressions.
96 lines
2.4 KiB
Rust
96 lines
2.4 KiB
Rust
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Licensed under the MIT License, <LICENSE or http://opensource.org/licenses/MIT>.
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// This file may not be copied, modified, or distributed except according to those terms.
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#![feature(plugin)]
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#![plugin(tarpc_plugins)]
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extern crate env_logger;
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#[macro_use]
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extern crate tarpc;
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extern crate futures;
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extern crate tokio_core;
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use add::{SyncService as AddSyncService, SyncServiceExt as AddExt};
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use double::{SyncService as DoubleSyncService, SyncServiceExt as DoubleExt};
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use std::sync::mpsc;
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use std::thread;
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use tarpc::{client, server};
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use tarpc::client::sync::ClientExt as Fc;
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use tarpc::util::{FirstSocketAddr, Message, Never};
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pub mod add {
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service! {
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/// Add two ints together.
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rpc add(x: i32, y: i32) -> i32;
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}
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}
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pub mod double {
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use tarpc::util::Message;
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service! {
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/// 2 * x
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rpc double(x: i32) -> i32 | Message;
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}
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}
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#[derive(Clone)]
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struct AddServer;
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impl AddSyncService for AddServer {
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fn add(&self, x: i32, y: i32) -> Result<i32, Never> {
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Ok(x + y)
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}
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}
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#[derive(Clone)]
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struct DoubleServer {
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client: add::SyncClient,
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}
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impl DoubleServer {
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fn new(client: add::SyncClient) -> Self {
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DoubleServer { client: client }
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}
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}
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impl DoubleSyncService for DoubleServer {
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fn double(&self, x: i32) -> Result<i32, Message> {
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self.client
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.add(x, x)
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.map_err(|e| e.to_string().into())
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}
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}
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fn main() {
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let _ = env_logger::init();
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let (tx, rx) = mpsc::channel();
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thread::spawn(move || {
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let handle = AddServer.listen("localhost:0".first_socket_addr(),
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server::Options::default()).unwrap();
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tx.send(handle.addr()).unwrap();
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handle.run();
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});
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let add = rx.recv().unwrap();
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let (tx, rx) = mpsc::channel();
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thread::spawn(move || {
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let add_client = add::SyncClient::connect(add, client::Options::default()).unwrap();
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let handle = DoubleServer::new(add_client)
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.listen("localhost:0".first_socket_addr(), server::Options::default())
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.unwrap();
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tx.send(handle.addr()).unwrap();
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handle.run();
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});
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let double = rx.recv().unwrap();
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let double_client = double::SyncClient::connect(double, client::Options::default()).unwrap();
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for i in 0..5 {
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let doubled = double_client.double(i).unwrap();
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println!("{:?}", doubled);
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}
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}
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