From 0992071a7f1a36424bcfaf1fbc84541ea041df1a Mon Sep 17 00:00:00 2001
From: hozan23 <hozan23@karyontech.net>
Date: Thu, 11 Apr 2024 10:19:20 +0200
Subject: add support for tokio & improve net crate api

---
 jsonrpc/src/client.rs | 155 +++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 117 insertions(+), 38 deletions(-)

(limited to 'jsonrpc/src/client.rs')

diff --git a/jsonrpc/src/client.rs b/jsonrpc/src/client.rs
index efbaf50..50d772b 100644
--- a/jsonrpc/src/client.rs
+++ b/jsonrpc/src/client.rs
@@ -1,37 +1,32 @@
+use std::time::Duration;
+
 use log::debug;
 use serde::{de::DeserializeOwned, Serialize};
 
-use karyon_core::util::random_32;
-use karyon_net::ToConn;
+#[cfg(feature = "smol")]
+use futures_rustls::rustls;
+#[cfg(feature = "tokio")]
+use tokio_rustls::rustls;
 
-use crate::{
-    codec::{Codec, CodecConfig},
-    message, Error, Result, JSONRPC_VERSION,
+use karyon_core::{async_util::timeout, util::random_32};
+use karyon_net::{
+    tls::ClientTlsConfig,
+    ws::{ClientWsConfig, ClientWssConfig},
+    Conn, Endpoint, ToEndpoint,
 };
 
-/// Represents client config
-#[derive(Default)]
-pub struct ClientConfig {
-    pub timeout: Option<u64>,
-}
+use crate::{
+    codec::{JsonCodec, WsJsonCodec},
+    message, Error, Result,
+};
 
 /// Represents an RPC client
 pub struct Client {
-    codec: Codec,
-    config: ClientConfig,
+    conn: Conn<serde_json::Value>,
+    timeout: Option<u64>,
 }
 
 impl Client {
-    /// Creates a new RPC client by passing a Tcp, Unix, or Tls connection.
-    pub fn new<C: ToConn>(conn: C, config: ClientConfig) -> Self {
-        let codec_config = CodecConfig {
-            max_allowed_buffer_size: 0,
-            ..Default::default()
-        };
-        let codec = Codec::new(conn.to_conn(), codec_config);
-        Self { codec, config }
-    }
-
     /// Calls the provided method, waits for the response, and returns the result.
     pub async fn call<T: Serialize + DeserializeOwned, V: DeserializeOwned>(
         &self,
@@ -41,38 +36,122 @@ impl Client {
         let id = serde_json::json!(random_32());
 
         let request = message::Request {
-            jsonrpc: JSONRPC_VERSION.to_string(),
+            jsonrpc: message::JSONRPC_VERSION.to_string(),
             id,
             method: method.to_string(),
             params: serde_json::json!(params),
         };
 
-        let mut payload = serde_json::to_vec(&request)?;
-        payload.push(b'\n');
-        self.codec.write_all(&payload).await?;
+        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 mut buffer = vec![];
-        if let Some(t) = self.config.timeout {
-            self.codec.read_until_with_timeout(&mut buffer, t).await?;
-        } else {
-            self.codec.read_until(&mut buffer).await?;
-        };
-
-        let response = serde_json::from_slice::<message::Response>(&buffer)?;
+        let msg = self.conn.recv().await?;
+        let response = serde_json::from_value::<message::Response>(msg)?;
         debug!("<-- {response}");
 
-        if let Some(error) = response.error {
-            return Err(Error::CallError(error.code, error.message));
-        }
-
         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,
+        })
+    }
+}
-- 
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