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|
use std::time::Duration;
use log::debug;
use serde::{de::DeserializeOwned, Serialize};
#[cfg(feature = "smol")]
use futures_rustls::rustls;
#[cfg(feature = "tokio")]
use tokio_rustls::rustls;
use karyon_core::{async_util::timeout, util::random_32};
use karyon_net::{
tls::ClientTlsConfig,
ws::{ClientWsConfig, ClientWssConfig},
Conn, Endpoint, ToEndpoint,
};
use crate::{
codec::{JsonCodec, WsJsonCodec},
message, Error, Result,
};
/// Represents an RPC client
pub struct Client {
conn: Conn<serde_json::Value>,
timeout: Option<u64>,
}
impl Client {
/// Calls the provided method, waits for the response, and returns the result.
pub async fn call<T: Serialize + DeserializeOwned, V: DeserializeOwned>(
&self,
method: &str,
params: T,
) -> Result<V> {
let id = serde_json::json!(random_32());
let request = message::Request {
jsonrpc: message::JSONRPC_VERSION.to_string(),
id,
method: method.to_string(),
params: serde_json::json!(params),
};
let req_json = serde_json::to_value(&request)?;
match self.timeout {
Some(s) => {
let dur = Duration::from_secs(s);
timeout(dur, self.conn.send(req_json)).await??;
}
None => {
self.conn.send(req_json).await?;
}
}
debug!("--> {request}");
let msg = self.conn.recv().await?;
let response = serde_json::from_value::<message::Response>(msg)?;
debug!("<-- {response}");
if response.id.is_none() || response.id.unwrap() != request.id {
return Err(Error::InvalidMsg("Invalid response id"));
}
if let Some(error) = response.error {
return Err(Error::CallError(error.code, error.message));
}
match response.result {
Some(result) => Ok(serde_json::from_value::<V>(result)?),
None => Err(Error::InvalidMsg("Invalid response result")),
}
}
}
pub struct ClientBuilder {
endpoint: Endpoint,
tls_config: Option<(rustls::ClientConfig, String)>,
timeout: Option<u64>,
}
impl ClientBuilder {
pub fn with_timeout(mut self, timeout: u64) -> Self {
self.timeout = Some(timeout);
self
}
pub fn tls_config(mut self, config: rustls::ClientConfig, dns_name: &str) -> Result<Self> {
match self.endpoint {
Endpoint::Tcp(..) | Endpoint::Tls(..) | Endpoint::Ws(..) | Endpoint::Wss(..) => {
self.tls_config = Some((config, dns_name.to_string()));
Ok(self)
}
_ => Err(Error::UnsupportedProtocol(self.endpoint.to_string())),
}
}
pub async fn build(self) -> Result<Client> {
let conn: Conn<serde_json::Value> = match self.endpoint {
Endpoint::Tcp(..) | Endpoint::Tls(..) => match self.tls_config {
Some((conf, dns_name)) => Box::new(
karyon_net::tls::dial(
&self.endpoint,
ClientTlsConfig {
dns_name,
client_config: conf,
tcp_config: Default::default(),
},
JsonCodec {},
)
.await?,
),
None => Box::new(
karyon_net::tcp::dial(&self.endpoint, Default::default(), JsonCodec {}).await?,
),
},
Endpoint::Ws(..) | Endpoint::Wss(..) => match self.tls_config {
Some((conf, dns_name)) => Box::new(
karyon_net::ws::dial(
&self.endpoint,
ClientWsConfig {
tcp_config: Default::default(),
wss_config: Some(ClientWssConfig {
dns_name,
client_config: conf,
}),
},
WsJsonCodec {},
)
.await?,
),
None => Box::new(
karyon_net::ws::dial(&self.endpoint, Default::default(), WsJsonCodec {})
.await?,
),
},
Endpoint::Unix(..) => Box::new(
karyon_net::unix::dial(&self.endpoint, Default::default(), JsonCodec {}).await?,
),
_ => return Err(Error::UnsupportedProtocol(self.endpoint.to_string())),
};
Ok(Client {
timeout: self.timeout,
conn,
})
}
}
impl Client {
pub fn builder(endpoint: impl ToEndpoint) -> Result<ClientBuilder> {
let endpoint = endpoint.to_endpoint()?;
Ok(ClientBuilder {
endpoint,
timeout: None,
tls_config: None,
})
}
}
|
