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|
use std::sync::Arc;
#[cfg(feature = "smol")]
use futures_rustls::rustls;
#[cfg(feature = "tokio")]
use tokio_rustls::rustls;
use karyon_core::async_util::TaskGroup;
use karyon_net::{tls::ClientTlsConfig, Conn, Endpoint, ToEndpoint};
#[cfg(feature = "ws")]
use karyon_net::ws::{ClientWsConfig, ClientWssConfig};
#[cfg(feature = "ws")]
use crate::codec::WsJsonCodec;
use crate::{codec::JsonCodec, Error, Result, TcpConfig};
use super::{Client, MessageDispatcher, Subscriber};
const DEFAULT_TIMEOUT: u64 = 3000; // 3s
impl Client {
/// Creates a new [`ClientBuilder`]
///
/// This function initializes a `ClientBuilder` with the specified endpoint.
///
/// # Example
///
/// ```ignore
/// let builder = Client::builder("ws://127.0.0.1:3000")?.build()?;
/// ```
pub fn builder(endpoint: impl ToEndpoint) -> Result<ClientBuilder> {
let endpoint = endpoint.to_endpoint()?;
Ok(ClientBuilder {
endpoint,
timeout: Some(DEFAULT_TIMEOUT),
tls_config: None,
tcp_config: Default::default(),
})
}
}
/// Builder for constructing an RPC [`Client`].
pub struct ClientBuilder {
endpoint: Endpoint,
tls_config: Option<(rustls::ClientConfig, String)>,
tcp_config: TcpConfig,
timeout: Option<u64>,
}
impl ClientBuilder {
/// Set timeout for receiving messages, in milliseconds. Requests will
/// fail if it takes longer.
///
/// # Examples
///
/// ```ignore
/// let client = Client::builder()?.set_timeout(5000).build()?;
/// ```
pub fn set_timeout(mut self, timeout: u64) -> Self {
self.timeout = Some(timeout);
self
}
/// Configure TCP settings for the client.
///
/// # Example
///
/// ```ignore
/// let tcp_config = TcpConfig::default();
/// let client = Client::builder()?.tcp_config(tcp_config)?.build()?;
/// ```
///
/// This function will return an error if the endpoint does not support TCP protocols.
pub fn tcp_config(mut self, config: TcpConfig) -> Result<Self> {
match self.endpoint {
Endpoint::Tcp(..) | Endpoint::Tls(..) | Endpoint::Ws(..) | Endpoint::Wss(..) => {
self.tcp_config = config;
Ok(self)
}
_ => Err(Error::UnsupportedProtocol(self.endpoint.to_string())),
}
}
/// Configure TLS settings for the client.
///
/// # Example
///
/// ```ignore
/// let tls_config = rustls::ClientConfig::new(...);
/// let client = Client::builder()?.tls_config(tls_config, "example.com")?.build()?;
/// ```
///
/// This function will return an error if the endpoint does not support TLS protocols.
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())),
}
}
/// Build RPC client from [`ClientBuilder`].
///
/// This function creates a new RPC client using the configurations
/// specified in the `ClientBuilder`. It returns a `Arc<Client>` on success.
///
/// # Example
///
/// ```ignore
/// let client = Client::builder(endpoint)?
/// .set_timeout(5000)
/// .tcp_config(tcp_config)?
/// .tls_config(tls_config, "example.com")?
/// .build()
/// .await?;
/// ```
pub async fn build(self) -> Result<Arc<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: self.tcp_config,
},
JsonCodec {},
)
.await?,
),
None => Box::new(
karyon_net::tcp::dial(&self.endpoint, self.tcp_config, JsonCodec {}).await?,
),
},
#[cfg(feature = "ws")]
Endpoint::Ws(..) | Endpoint::Wss(..) => match self.tls_config {
Some((conf, dns_name)) => Box::new(
karyon_net::ws::dial(
&self.endpoint,
ClientWsConfig {
tcp_config: self.tcp_config,
wss_config: Some(ClientWssConfig {
dns_name,
client_config: conf,
}),
},
WsJsonCodec {},
)
.await?,
),
None => {
let config = ClientWsConfig {
tcp_config: self.tcp_config,
wss_config: None,
};
Box::new(karyon_net::ws::dial(&self.endpoint, config, WsJsonCodec {}).await?)
}
},
#[cfg(all(feature = "unix", target_family = "unix"))]
Endpoint::Unix(..) => Box::new(
karyon_net::unix::dial(&self.endpoint, Default::default(), JsonCodec {}).await?,
),
_ => return Err(Error::UnsupportedProtocol(self.endpoint.to_string())),
};
let client = Arc::new(Client {
timeout: self.timeout,
conn,
message_dispatcher: MessageDispatcher::new(),
subscriber: Subscriber::new(),
task_group: TaskGroup::new(),
});
client.start_background_receiving();
Ok(client)
}
}
|
