Finish implementation of new Rust Tokio Target

This commit is contained in:
Fabian Stamm 2022-12-17 17:11:28 +01:00
parent 890b903f04
commit 46aff0c61b
21 changed files with 1598 additions and 685 deletions

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Generated/
Impl/target
Server/target
Client/target

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examples/Rust/Client/Cargo.lock generated Normal file
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[dependencies]
example = { path = "../Generated/" }
async-trait = "0.1.59"
tokio = { version = "1.22.0", features = ["full"] }
serde_json = "1.0.88"

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use std::sync::atomic::AtomicU64;
use std::sync::Arc;
use example::client::SimpleTestService;
use example::JRPCClient;
use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
use tokio::net::TcpStream;
use tokio::sync::mpsc::channel;
#[tokio::main]
pub async fn main() {
let (tx, mut rx) = channel(1);
let stream = TcpStream::connect("127.0.0.1:4321").await.unwrap();
let client = example::JRPCClient::new(tx.clone());
let test_service = SimpleTestService::new(client.clone());
let (reader, mut writer) = stream.into_split();
let mut reader = BufReader::new(reader);
let mut line = String::new();
tokio::spawn(async move {
loop {
line.clear();
reader.read_line(&mut line).await.unwrap();
client.on_result(serde_json::from_str(&line).unwrap()).await;
}
});
tokio::spawn(async move {
while let Some(message) = rx.recv().await {
writer
.write_all((serde_json::to_string(&message).unwrap() + "\n").as_bytes())
.await
.unwrap();
}
});
let ticks = Arc::new(AtomicU64::new(0));
let t2 = ticks.clone();
tokio::spawn(async move {
loop {
tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
println!("Ticks: {}", t2.load(std::sync::atomic::Ordering::Relaxed));
t2.store(0, std::sync::atomic::Ordering::Relaxed);
}
});
loop {
let _result = test_service.GetTest("Hi".to_owned(), 55).await.unwrap();
ticks.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
}
}

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use test::{JRPCServer,Result,Test};
use test::server::{TestService,TestServiceHandler};
use std::io::{BufReader,BufRead,Write};
use std::sync::mpsc::channel;
#[derive(Clone, Copy)]
struct MyCtx {}
struct TestServiceImplementation {}
impl TestService<MyCtx> for TestServiceImplementation {
fn GetTest(&self, name: String, age: i64, _context: &MyCtx) -> Result<Test> {
return Ok(Test { name, age });
}
fn TestNot(&self, _: &MyCtx) -> Result<()> {
return Ok(());
}
}
pub fn main() {
let mut srv = JRPCServer::<MyCtx>::new();
srv.add_service(TestServiceHandler::new(Box::from(TestServiceImplementation {})));
let listener = std::net::TcpListener::bind("127.0.0.1:4321").expect("Could not start listener!");
for stream in listener.incoming() {
println!("Got Connection!");
let (stx, srx) = channel::<String>();
let (rtx, rrx) = channel::<String>();
let mut stream = stream.expect("Bad stream");
let mut r = BufReader::new(stream.try_clone().unwrap());
let mut line = String::new();
srv.start_session(srx, rtx, MyCtx {});
r.read_line(&mut line).expect("Could not read line!");
println!("Got line: {}", line);
stx.send(line).expect("Could not send packet to handler!");
println!("Sending to handler succeeded");
let response = rrx.recv().expect("Could not get reponse from handler!");
println!("Prepared response {}", response);
stream.write((response + "\n").as_bytes()).expect("Could not send reponse!");
}
println!("Hello World");
// return Ok(());
}

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checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
[[package]]
name = "socket2"
version = "0.4.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "02e2d2db9033d13a1567121ddd7a095ee144db4e1ca1b1bda3419bc0da294ebd"
dependencies = [
"libc",
"winapi",
]
[[package]]
name = "syn"
version = "1.0.105"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "60b9b43d45702de4c839cb9b51d9f529c5dd26a4aff255b42b1ebc03e88ee908"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "test-impl"
version = "0.1.0"
dependencies = [
"async-trait",
"example",
"serde_json",
"tokio",
]
[[package]]
name = "thiserror"
version = "1.0.37"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "10deb33631e3c9018b9baf9dcbbc4f737320d2b576bac10f6aefa048fa407e3e"
dependencies = [
"thiserror-impl",
]
[[package]]
name = "thiserror-impl"
version = "1.0.37"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "982d17546b47146b28f7c22e3d08465f6b8903d0ea13c1660d9d84a6e7adcdbb"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "time"
version = "0.3.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a561bf4617eebd33bca6434b988f39ed798e527f51a1e797d0ee4f61c0a38376"
dependencies = [
"itoa",
"libc",
"num_threads",
"serde",
"time-core",
"time-macros",
]
[[package]]
name = "time-core"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2e153e1f1acaef8acc537e68b44906d2db6436e2b35ac2c6b42640fff91f00fd"
[[package]]
name = "time-macros"
version = "0.2.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d967f99f534ca7e495c575c62638eebc2898a8c84c119b89e250477bc4ba16b2"
dependencies = [
"time-core",
]
[[package]]
name = "tokio"
version = "1.23.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "eab6d665857cc6ca78d6e80303a02cea7a7851e85dfbd77cbdc09bd129f1ef46"
dependencies = [
"autocfg",
"bytes",
"libc",
"memchr",
"mio",
"num_cpus",
"parking_lot",
"pin-project-lite",
"signal-hook-registry",
"socket2",
"tokio-macros",
"windows-sys",
]
[[package]]
name = "tokio-macros"
version = "1.8.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d266c00fde287f55d3f1c3e96c500c362a2b8c695076ec180f27918820bc6df8"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "toml"
version = "0.5.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
dependencies = [
"serde",
]
[[package]]
name = "unicode-ident"
version = "1.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"
[[package]]
name = "wasi"
version = "0.11.0+wasi-snapshot-preview1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
[[package]]
name = "winapi"
version = "0.3.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
dependencies = [
"winapi-i686-pc-windows-gnu",
"winapi-x86_64-pc-windows-gnu",
]
[[package]]
name = "winapi-i686-pc-windows-gnu"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
[[package]]
name = "winapi-x86_64-pc-windows-gnu"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
[[package]]
name = "windows-sys"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
dependencies = [
"windows_aarch64_gnullvm",
"windows_aarch64_msvc",
"windows_i686_gnu",
"windows_i686_msvc",
"windows_x86_64_gnu",
"windows_x86_64_gnullvm",
"windows_x86_64_msvc",
]
[[package]]
name = "windows_aarch64_gnullvm"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e"
[[package]]
name = "windows_aarch64_msvc"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4"
[[package]]
name = "windows_i686_gnu"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7"
[[package]]
name = "windows_i686_msvc"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246"
[[package]]
name = "windows_x86_64_gnu"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed"
[[package]]
name = "windows_x86_64_gnullvm"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028"
[[package]]
name = "windows_x86_64_msvc"
version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5"

View File

@ -0,0 +1,10 @@
[package]
name = "test-impl"
version = "0.1.0"
edition = "2021"
[dependencies]
example = { path = "../Generated/" }
async-trait = "0.1.59"
tokio = { version = "1.22.0", features = ["full"] }
serde_json = "1.0.88"

View File

@ -0,0 +1,75 @@
use async_trait::async_trait;
use example::base_lib::JRPCResult;
use example::server::{SimpleTestService, SimpleTestServiceHandler};
use example::{JRPCServer, Result, Test2};
use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
use tokio::net::TcpStream;
use tokio::sync::mpsc::channel;
#[derive(Clone)]
struct TestServiceImplementation {}
#[async_trait]
impl SimpleTestService for TestServiceImplementation {
async fn GetTest(&self, name: String, age: i64) -> Result<Test2> {
return Ok(Test2 { name, age });
}
async fn TestNot(&self) -> Result<()> {
return Ok(());
}
}
fn handle_connection(stream: TcpStream, server: &JRPCServer) {
let (response_sender, mut response_receiver) = channel::<JRPCResult>(1);
let session = server.get_session(response_sender);
let (r, mut w) = stream.into_split();
tokio::spawn(async move {
loop {
let res = response_receiver.recv().await;
match res {
None => break,
Some(res) => w
.write_all((serde_json::to_string(&res).unwrap() + "\n").as_bytes())
.await
.unwrap(),
}
}
});
tokio::spawn(async move {
let mut reader = BufReader::new(r);
loop {
let mut line = String::new();
let res = reader.read_line(&mut line).await;
match res {
Ok(size) => {
if size > 0 {
session.handle_request(serde_json::from_str(&line).unwrap())
} else {
break;
}
}
Err(_) => break,
}
}
});
}
#[tokio::main]
pub async fn main() {
let mut srv = JRPCServer::new();
srv.add_service(SimpleTestServiceHandler::new(Box::from(
TestServiceImplementation {},
)));
let listener = tokio::net::TcpListener::bind("0.0.0.0:4321").await.unwrap();
loop {
let (stream, address) = listener.accept().await.unwrap();
println!("Got connection from {}", address);
handle_connection(stream, &srv);
}
}

View File

@ -1,18 +1,31 @@
import * as net from "net";
import { Server, AddValueRequest, AddValueResponse } from "./out";
import { Server, AddValueRequest, AddValueResponse, Test2 } from "./out";
import * as readline from 'node:readline';
const server = new Server.ServiceProvider();
class SimpleTestService extends Server.SimpleTestService<undefined> {
async GetTest(name: string, age: number, ctx: undefined): Promise<Test2> {
return {
name,
age,
};
}
TestNot(ctx: undefined): void {
}
}
class TestService extends Server.TestService<undefined> {
async AddValuesSingleParam(
request: AddValueRequest,
ctx: undefined
): Promise<AddValueResponse> {
return {
value: request.value1 + request!.value2,
value: request.value1! + request!.value2!,
};
}
async AddValuesMultipleParams(
@ -41,6 +54,7 @@ class TestService extends Server.TestService<undefined> {
}
server.addService(new TestService());
server.addService(new SimpleTestService());
net.createServer((socket) => {
socket.on("error", console.error);
@ -57,6 +71,6 @@ net.createServer((socket) => {
sess.onMessage(JSON.parse(line));
})
rl.on("error", console.error);
}).listen(8859).on("listening", () => {
console.log("Is listening on :8859");
}).listen(4321).on("listening", () => {
console.log("Is listening on :4321");
}).on("error", console.error)

View File

@ -53,3 +53,14 @@ service TestService {
FunctionWithArrayAsParamAndReturn(values1: float[], values2: float[]): float[];
}
type Test2 {
name: string;
age: int;
}
service SimpleTestService {
@Description("asdasdasd")
GetTest(name: string, age: int): Test2;
notification TestNot();
}

View File

@ -1,14 +0,0 @@
define rust_crate test;
type Test {
name: string;
age: int;
}
service TestService {
@Description("asdasdasd")
GetTest(name: string, age: int): Test;
notification TestNot();
}
// { "jsonrpc": "2.0", "method": "TestService.GetTest", "params": [ "SomeName", 25 ], "id": "someid" }

View File

@ -1,6 +1,6 @@
{
"name": "@hibas123/jrpcgen",
"version": "1.1.6",
"version": "1.2.0",
"main": "lib/index.js",
"license": "MIT",
"packageManager": "yarn@3.1.1",

View File

@ -142,7 +142,7 @@ export class RustTarget extends CompileTarget<{ rust_crate: string }> {
let ret = fnc.return
? typeToRust(fnc.return.type, fnc.return.array)
: "()";
a(1, `pub fn ${fnc.name}(&self, ${params}) -> Result<${ret}> {`);
a(1, `pub async fn ${fnc.name}(&self, ${params}) -> Result<${ret}> {`);
a(2, `let l_req = JRPCRequest {`);
a(3, `jsonrpc: "2.0".to_owned(),`);
a(3, `id: None, // 'id' will be set by the send_request function`);
@ -151,21 +151,25 @@ export class RustTarget extends CompileTarget<{ rust_crate: string }> {
a(2, `};`);
a(2, ``);
if (fnc.return) {
a(2, `let l_res = self.client.send_request(l_req);`);
a(2, `if let Err(e) = l_res {`);
a(3, `return Err(e);`);
a(2, `} else if let Ok(o) = l_res {`);
a(2, `let l_res = self.client.send_request(l_req).await;`);
a(2, `match l_res {`);
a(3, `Err(e) => return Err(e),`);
if (fnc.return.type == "void") {
a(3, `return ();`);
a(3, `Ok(_) => {`);
a(4, `return Ok(());`);
a(3, `}`);
} else {
a(3, `Ok(o) => {`);
a(
3,
4,
`return serde_json::from_value(o).map_err(|e| Box::from(e));`
);
a(3, `}`);
}
a(2, `} else { panic!("What else cases could there be?"); }`);
a(2, `}`);
} else {
a(2, `self.client.send_notification(l_req);`);
a(2, `self.client.send_notification(l_req).await;`);
a(2, `return Ok(());`);
}
a(1, `}`);
@ -180,61 +184,62 @@ export class RustTarget extends CompileTarget<{ rust_crate: string }> {
const { a, getResult } = LineAppender();
this.addDependencies(a, definition);
a(0, `use crate::base_lib::{JRPCServiceHandler,JRPCRequest,Result};`);
a(0, `use crate::base_lib::{JRPCServerService, JRPCRequest, Result};`);
a(0, `use serde_json::{Value};`);
a(0, `use std::sync::Arc;`);
a(0, `use async_trait::async_trait;`);
const typeToRust = (type: string, array: boolean) => {
let rt = toRustType(type);
return array ? `Vec<${rt}>` : rt;
};
const CTX_TYPE = "'static + Sync + Send + Copy";
a(0, ``);
a(0, `pub trait ${definition.name}<C: ${CTX_TYPE}> {`);
a(0, `#[async_trait]`);
a(0, `pub trait ${definition.name} {`);
for (const fnc of definition.functions) {
let params =
fnc.inputs.length > 0
? fnc.inputs
.map((i) => i.name + ": " + typeToRust(i.type, i.array))
.join(", ") + ", "
.join(", ")
: "";
let ret = fnc.return
? typeToRust(fnc.return.type, fnc.return.array)
: "()";
a(1, `fn ${fnc.name}(&self, ${params}context: &C) -> Result<${ret}>;`);
a(1, `async fn ${fnc.name}(&self, ${params}) -> Result<${ret}>;`);
}
a(0, `}`);
a(0, ``);
a(0, `pub struct ${definition.name}Handler<C: ${CTX_TYPE}> {`);
a(1, `implementation: Box<dyn ${definition.name}<C> + Sync + Send>,`);
a(0, `pub struct ${definition.name}Handler {`);
a(1, `implementation: Box<dyn ${definition.name} + Sync + Send + 'static>,`);
a(0, `}`);
a(0, ``);
a(0, `impl<C: ${CTX_TYPE}> ${definition.name}Handler<C> {`);
a(0, `impl ${definition.name}Handler {`);
a(
1,
`pub fn new(implementation: Box<dyn ${definition.name}<C> + Sync + Send>) -> Box<Self> {`
`pub fn new(implementation: Box<dyn ${definition.name} + Sync + Send + 'static>) -> Arc<Self> {`
);
a(2, `return Box::from(Self { implementation });`);
a(2, `return Arc::from(Self { implementation });`);
a(1, `}`);
a(0, `}`);
a(0, ``);
a(0, `#[async_trait]`);
a(
0,
`impl<C: ${CTX_TYPE}> JRPCServiceHandler<C> for ${definition.name}Handler<C> {`
`impl JRPCServerService for ${definition.name}Handler {`
);
a(1, `fn get_name(&self) -> String { "${definition.name}".to_owned() }`);
a(1, `fn get_id(&self) -> String { "${definition.name}".to_owned() }`);
a(0, ``);
a(
1,
`fn on_message(&self, msg: JRPCRequest, function: String, ctx: &C) -> Result<(bool, Value)> {`
`async fn handle(&self, msg: &JRPCRequest, function: &str) -> Result<(bool, Value)> {`
);
a(2, `match function.as_str() {`);
a(2, `match function {`);
for (const fnc of definition.functions) {
a(3, `"${fnc.name}" => {`);
a(4, `if msg.params.is_array() {`);
@ -250,10 +255,10 @@ export class RustTarget extends CompileTarget<{ rust_crate: string }> {
a(6, `serde_json::from_value(arr[${i}].clone())`);
a(
7,
`.map_err(|_| "Parameter for field '${inp.name}' should be of type '${inp.type}'!")?,` //TODO: Array
`.map_err(|_| "Parameter for field '${inp.name}' should be of type '${inp.type}'!")?${i == fnc.inputs.length - 1 ? "" : ","}` //TODO: Array
);
}
a(5, `ctx)?;`);
a(5, `).await?;`);
if (fnc.return) {
a(5, `return Ok((true, serde_json::to_value(res)?));`);
} else {
@ -296,7 +301,7 @@ export class RustTarget extends CompileTarget<{ rust_crate: string }> {
const as = ls.a;
a(0, `pub mod base_lib;`);
a(0, `pub use base_lib::{JRPCServer,Result};`);
a(0, `pub use base_lib::{JRPCServer, JRPCClient, Result};`);
for (const [typ, def] of steps) {
if (typ == "type" || typ == "enum") {
@ -306,18 +311,17 @@ export class RustTarget extends CompileTarget<{ rust_crate: string }> {
as(0, `mod ${toSnake(def.name)};`);
as(
0,
`pub use ${toSnake(def.name)}::{${def.name}, ${
def.name
`pub use ${toSnake(def.name)}::{${def.name}, ${def.name
}Handler};`
);
ac(0, `mod ${toSnake(def.name)};`);
ac(0, `pub use ${toSnake(def.name)}::${def.name};`);
}
}
a(0, `pub mod server;`);
a(0, `pub mod client;`);
}
}
this.writeFile(`src/lib.rs`, getResult());
this.writeFile(`src/server/mod.rs`, ls.getResult());

View File

@ -0,0 +1,2 @@
[*.rs]
indent_size = 4

View File

@ -6,10 +6,11 @@ edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
int-enum = "0.4.0"
serde = { version = "1.0.136", features = ["derive"] }
serde_json = "1.0.79"
threadpool = "1.8.1"
int-enum = "0.5.0"
serde = { version = "1.0.147", features = ["derive"] }
serde_json = "1.0.88"
nanoid = "0.4.0"
tokio = { version = "1.22.0", features = ["full"] }
log = "0.4.17"
simple_logger = { version = "4.0.0", features = ["threads", "colored", "timestamps", "stderr"] }
async-trait = "0.1.59"

View File

@ -1,29 +1,16 @@
use log::{info, trace, warn};
use nanoid::nanoid;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use std::boxed::Box;
use std::collections::HashMap;
use std::error::Error;
use std::marker::PhantomData;
use std::marker::Send;
use std::sync::mpsc::{Receiver, Sender};
use std::sync::{Arc, Mutex};
use threadpool::ThreadPool;
use std::{collections::HashMap, sync::Arc};
use tokio::sync::{mpsc::Sender, Mutex};
pub type Result<T> = std::result::Result<T, Box<dyn Error>>;
pub type Result<T> = std::result::Result<T, Box<dyn Error + Send + Sync>>;
// TODO: Check what happens when error code is not included
// #[repr(i64)]
// #[derive(Clone, Copy, Debug, Eq, PartialEq, IntEnum, Deserialize, Serialize)]
// pub enum ErrorCodes {
// ParseError = -32700,
// InvalidRequest = -32600,
// MethodNotFound = -32601,
// InvalidParams = -32602,
// InternalError = -32603,
// }
#[derive(Serialize, Deserialize)]
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct JRPCRequest {
pub jsonrpc: String,
pub id: Option<String>,
@ -31,14 +18,25 @@ pub struct JRPCRequest {
pub params: Value,
}
#[derive(Serialize, Deserialize)]
impl JRPCRequest {
pub fn new_request(method: String, params: Value) -> JRPCRequest {
JRPCRequest {
jsonrpc: "2.0".to_string(),
id: None,
method,
params,
}
}
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct JRPCError {
pub code: i64,
pub message: String,
pub data: Value,
}
#[derive(Serialize, Deserialize)]
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct JRPCResult {
pub jsonrpc: String,
pub id: String,
@ -46,241 +44,180 @@ pub struct JRPCResult {
pub error: Option<JRPCError>,
}
// ******************************************************************************
// * SERVER
// ******************************************************************************
pub trait JRPCServiceHandler<C: Sync>: Send {
fn get_name(&self) -> String;
fn on_message(&self, msg: JRPCRequest, function: String, ctx: &C) -> Result<(bool, Value)>;
}
type Shared<T> = Arc<Mutex<T>>;
type SharedHM<K, V> = Shared<HashMap<K, V>>;
type ServiceSharedHM<C> = SharedHM<String, Box<dyn JRPCServiceHandler<C>>>;
type SharedThreadPool = Shared<ThreadPool>;
pub struct JRPCServer<CTX: 'static + Sync + Send + Copy> {
services: ServiceSharedHM<CTX>,
pool: SharedThreadPool,
}
impl<CTX: 'static + Sync + Send + Copy> JRPCServer<CTX> {
pub fn new() -> Self {
return Self {
services: Arc::new(Mutex::new(HashMap::new())),
pool: Arc::new(Mutex::new(ThreadPool::new(32))),
};
}
pub fn add_service(&mut self, service: Box<dyn JRPCServiceHandler<CTX>>) {
let mut services = self.services.lock().unwrap();
services.insert(service.get_name(), service);
}
pub fn start_session(
&mut self,
read_ch: Receiver<String>,
write_ch: Sender<String>,
context: CTX,
) {
let services = self.services.clone();
let p = self.pool.lock().unwrap();
let pool = self.pool.clone();
p.execute(move || {
JRPCSession::start(read_ch, write_ch, context, services, pool);
});
}
}
pub struct JRPCSession<CTX: 'static + Sync + Send + Copy> {
_ctx: PhantomData<CTX>,
}
unsafe impl<CTX: 'static + Sync + Send + Copy> Sync for JRPCSession<CTX> {}
impl<CTX: 'static + Sync + Send + Copy> JRPCSession<CTX> {
fn start(
read_ch: Receiver<String>,
write_ch: Sender<String>,
context: CTX,
services: ServiceSharedHM<CTX>,
pool: SharedThreadPool,
) {
loop {
let pkg = read_ch.recv();
let data = match pkg {
Err(_) => return,
Ok(res) => res,
};
if data.len() == 0 {
//TODO: This can be done better
return;
}
let ctx = context.clone();
let svs = services.clone();
let wc = write_ch.clone();
pool.lock().unwrap().execute(move || {
JRPCSession::handle_packet(data, wc, ctx, svs);
})
}
}
fn handle_packet(
data: String,
write_ch: Sender<String>,
context: CTX,
services: ServiceSharedHM<CTX>,
) {
let req: Result<JRPCRequest> =
serde_json::from_str(data.as_str()).map_err(|err| Box::from(err));
let req = match req {
Err(_) => {
return;
}
Ok(parsed) => parsed,
};
let req_id = req.id.clone();
let mut parts: Vec<String> = req.method.splitn(2, '.').map(|e| e.to_owned()).collect();
if parts.len() != 2 {
return Self::send_err_res(req_id, write_ch, Box::from("Error".to_owned()));
}
let service = parts.remove(0);
let function = parts.remove(0);
let svs = services.lock().unwrap();
let srv = svs.get(&service);
if let Some(srv) = srv {
match srv.on_message(req, function, &context) {
Ok((is_send, value)) => {
if is_send {
if let Some(id) = req_id {
let r = JRPCResult {
jsonrpc: "2.0".to_owned(),
id,
result: value,
error: None,
};
let s = serde_json::to_string(&r);
if s.is_ok() {
write_ch
.send(s.unwrap())
.expect("Sending data into channel failed!");
}
}
}
}
Err(err) => return Self::send_err_res(req_id, write_ch, err),
}
}
}
fn send_err_res(id: Option<String>, write_ch: Sender<String>, err: Box<dyn Error>) {
if let Some(id) = id {
let error = JRPCError {
code: 0, //TODO: Make this better?
message: err.to_string(),
data: Value::Null,
};
let r = JRPCResult {
jsonrpc: "2.0".to_owned(),
id: id.clone(),
result: Value::Null,
error: Option::from(error),
};
let s = serde_json::to_string(&r);
if s.is_ok() {
write_ch
.send(s.unwrap())
.expect("Sending data into channel failed!");
}
}
return ();
}
}
// ******************************************************************************
// * CLIENT
// ******************************************************************************
#[derive(Clone)]
#[derive(Debug, Clone)]
pub struct JRPCClient {
write_ch: Sender<String>,
requests: SharedHM<String, Sender<Result<Value>>>,
message_sender: Sender<JRPCRequest>,
requests: Arc<Mutex<HashMap<String, Sender<JRPCResult>>>>,
}
unsafe impl Send for JRPCClient {} //TODO: Is this a problem
impl JRPCClient {
pub fn new(write_ch: Sender<String>, read_ch: Receiver<String>) -> Self {
let n = Self {
write_ch,
pub fn new(sender: Sender<JRPCRequest>) -> JRPCClient {
JRPCClient {
message_sender: sender,
requests: Arc::new(Mutex::new(HashMap::new())),
};
n.start(read_ch);
return n;
}
}
pub fn start(&self, read_ch: Receiver<String>) {
let s = self.clone();
std::thread::spawn(move || {
s.start_reader(read_ch);
pub async fn send_request(&self, mut request: JRPCRequest) -> Result<Value> {
let (sender, mut receiver) = tokio::sync::mpsc::channel(1);
if request.id.is_none() {
request.id = Some(nanoid!());
}
{
let mut self_requests = self.requests.lock().await;
self_requests.insert(request.id.clone().unwrap(), sender);
}
self.message_sender.send(request).await?;
let result = receiver.recv().await;
if let Some(result) = result {
if let Some(error) = result.error {
return Err(format!("Error while receiving result: {}", error.message).into());
} else {
return Ok(result.result);
}
} else {
return Err("Error while receiving result".into());
}
}
pub async fn send_notification(&self, mut request: JRPCRequest) {
request.id = None;
_ = self.message_sender.send(request).await;
}
pub async fn on_result(&self, result: JRPCResult) {
let id = result.id.clone();
let mut self_requests = self.requests.lock().await;
let sender = self_requests.get(&id);
if let Some(sender) = sender {
_ = sender.send(result).await;
self_requests.remove(&id);
}
}
}
#[async_trait::async_trait]
pub trait JRPCServerService: Send + Sync + 'static {
fn get_id(&self) -> String;
async fn handle(&self, request: &JRPCRequest, function: &str) -> Result<(bool, Value)>;
}
pub type JRPCServiceHandle = Arc<dyn JRPCServerService>;
#[derive(Clone)]
pub struct JRPCSession {
server: JRPCServer,
message_sender: Sender<JRPCResult>,
}
impl JRPCSession {
pub fn new(server: JRPCServer, sender: Sender<JRPCResult>) -> JRPCSession {
JRPCSession {
server,
message_sender: sender,
}
}
async fn send_error(&self, request: JRPCRequest, error_msg: String, error_code: i64) -> () {
if let Some(request_id) = request.id {
let error = JRPCError {
code: error_code,
message: error_msg,
data: Value::Null,
};
let result = JRPCResult {
jsonrpc: "2.0".to_string(),
id: request_id,
result: Value::Null,
error: Some(error),
};
// Send result
let result = self.message_sender.send(result).await;
if let Err(err) = result {
warn!("Error while sending result: {}", err);
}
}
}
pub fn handle_request(&self, request: JRPCRequest) -> () {
let session = self.clone();
tokio::task::spawn(async move {
info!("Received request: {}", request.method);
trace!("Request data: {:?}", request);
let method: Vec<&str> = request.method.split('.').collect();
if method.len() != 2 {
warn!("Invalid method received: {}", request.method);
return;
}
let service = method[0];
let function = method[1];
let service = session.server.services.get(service);
if let Some(service) = service {
let result = service.handle(&request, function).await;
match result {
Ok((is_send, result)) => {
if is_send && request.id.is_some() {
let result = session
.message_sender
.send(JRPCResult {
jsonrpc: "2.0".to_string(),
id: request.id.unwrap(),
result,
error: None,
})
.await;
if let Err(err) = result {
warn!("Error while sending result: {}", err);
}
}
}
Err(err) => {
warn!("Error while handling request: {}", err);
session
.send_error(
request,
format!("Error while handling request: {}", err),
1,
)
.await;
}
}
} else {
warn!("Service not found: {}", method[0]);
session
.send_error(request, "Service not found".to_string(), 1)
.await;
return;
}
});
}
fn start_reader(&self, read_ch: Receiver<String>) {
loop {
let data = read_ch.recv().expect("Error receiving packet!");
let response: JRPCResult =
serde_json::from_str(data.as_str()).expect("Error decoding response!");
let id = response.id;
let reqs = self.requests.lock().expect("Error locking requests map!");
let req = reqs.get(&id);
if let Some(req) = req {
let res = if let Some(err) = response.error {
Err(Box::from(err.message))
} else {
Ok(response.result)
};
req.send(res).expect("Error sending reponse!");
}
}
}
pub fn send_request(&self, mut req: JRPCRequest) -> Result<Value> {
let mut reqs = self.requests.lock().expect("Error locking requests map!");
let id = nanoid!();
req.id = Some(id.clone());
let (tx, rx) = std::sync::mpsc::channel();
reqs.insert(id, tx);
self
.write_ch
.send(serde_json::to_string(&req).expect("Error converting Request to JSON!"))
.expect("Error Sending to Channel!");
return rx.recv().expect("Error getting response!");
#[derive(Clone)]
pub struct JRPCServer {
services: HashMap<String, JRPCServiceHandle>,
}
pub fn send_notification(&self, mut req: JRPCRequest) {
req.id = None;
impl JRPCServer {
pub fn new() -> JRPCServer {
JRPCServer {
services: HashMap::new(),
}
}
self
.write_ch
.send(serde_json::to_string(&req).expect("Error converting Request to JSON!"))
.expect("Error Sending to Channel!");
pub fn add_service(&mut self, service: JRPCServiceHandle) -> () {
let id = service.get_id();
self.services.insert(id, service);
}
pub fn get_session(&self, sender: Sender<JRPCResult>) -> JRPCSession {
JRPCSession::new(self.clone(), sender)
}
}

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@ -1,2 +0,0 @@
target
Cargo.lock

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@ -1,15 +0,0 @@
[package]
name = "__name__"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
int-enum = "0.5.0"
serde = { version = "1.0.147", features = ["derive"] }
serde_json = "1.0.88"
threadpool = "1.8.1"
nanoid = "0.4.0"
tokio = { version = "1.22.0", features = ["full"] }

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@ -1,44 +0,0 @@
use nanoid::nanoid;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use std::boxed::Box;
use std::collections::HashMap;
use std::error::Error;
use std::marker::PhantomData;
use std::marker::Send;
use std::sync::mpsc::{Receiver, Sender};
use std::sync::{Arc, Mutex};
use threadpool::ThreadPool;
pub type Result<T> = std::result::Result<T, Box<dyn Error>>;
#[derive(Serialize, Deserialize)]
pub struct JRPCRequest {
pub jsonrpc: String,
pub id: Option<String>,
pub method: String,
pub params: Value,
}
#[derive(Serialize, Deserialize)]
pub struct JRPCError {
pub code: i64,
pub message: String,
pub data: Value,
}
#[derive(Serialize, Deserialize)]
pub struct JRPCResult {
pub jsonrpc: String,
pub id: String,
pub result: Value,
pub error: Option<JRPCError>,
}
struct JRPCServer {}
impl JRPCServer {
fn handle(&self) -> () {}
}
struct JRPCServerService {}