From 8afb4d30750840f66d9f97c2c54a893d3934c45e Mon Sep 17 00:00:00 2001
From: hozan23 <hozan23@karyontech.net>
Date: Tue, 28 May 2024 00:19:10 +0200
Subject: jsonrpc: enable concurrent requests in `Client`

---
 jsonrpc/src/server/builder.rs | 173 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 jsonrpc/src/server/builder.rs

(limited to 'jsonrpc/src/server/builder.rs')

diff --git a/jsonrpc/src/server/builder.rs b/jsonrpc/src/server/builder.rs
new file mode 100644
index 0000000..90024f3
--- /dev/null
+++ b/jsonrpc/src/server/builder.rs
@@ -0,0 +1,173 @@
+use std::{collections::HashMap, sync::Arc};
+
+#[cfg(feature = "smol")]
+use futures_rustls::rustls;
+#[cfg(feature = "tokio")]
+use tokio_rustls::rustls;
+
+use karyon_core::{async_runtime::Executor, async_util::TaskGroup};
+use karyon_net::{Endpoint, Listener, ToEndpoint};
+
+#[cfg(feature = "ws")]
+use crate::codec::WsJsonCodec;
+
+#[cfg(feature = "ws")]
+use karyon_net::ws::ServerWsConfig;
+
+use crate::{codec::JsonCodec, Error, PubSubRPCService, RPCService, Result, TcpConfig};
+
+use super::Server;
+
+/// Builder for constructing an RPC [`Server`].
+pub struct ServerBuilder {
+    endpoint: Endpoint,
+    tcp_config: TcpConfig,
+    tls_config: Option<rustls::ServerConfig>,
+    services: HashMap<String, Arc<dyn RPCService + 'static>>,
+    pubsub_services: HashMap<String, Arc<dyn PubSubRPCService + 'static>>,
+}
+
+impl ServerBuilder {
+    /// Adds a new RPC service to the server.
+    pub fn service(mut self, service: Arc<dyn RPCService>) -> Self {
+        self.services.insert(service.name(), service);
+        self
+    }
+
+    /// Adds a new PubSub RPC service to the server.
+    pub fn pubsub_service(mut self, service: Arc<dyn PubSubRPCService>) -> Self {
+        self.pubsub_services.insert(service.name(), service);
+        self
+    }
+
+    /// Configure TCP settings for the server.
+    ///
+    /// # Example
+    ///
+    /// ```ignore
+    /// let tcp_config = TcpConfig::default();
+    /// let server = Server::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<ServerBuilder> {
+        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 server.
+    ///
+    /// # Example
+    ///
+    /// ```ignore
+    /// let tls_config = rustls::ServerConfig::new(...);
+    /// let server = Server::builder()?.tls_config(tls_config)?.build()?;
+    /// ```
+    ///
+    /// This function will return an error if the endpoint does not support TLS protocols.
+    pub fn tls_config(mut self, config: rustls::ServerConfig) -> Result<ServerBuilder> {
+        match self.endpoint {
+            Endpoint::Tcp(..) | Endpoint::Tls(..) | Endpoint::Ws(..) | Endpoint::Wss(..) => {
+                self.tls_config = Some(config);
+                Ok(self)
+            }
+            _ => Err(Error::UnsupportedProtocol(self.endpoint.to_string())),
+        }
+    }
+
+    /// Builds the server with the configured options.
+    pub async fn build(self) -> Result<Arc<Server>> {
+        self._build(TaskGroup::new()).await
+    }
+
+    /// Builds the server with the configured options and an executor.
+    pub async fn build_with_executor(self, ex: Executor) -> Result<Arc<Server>> {
+        self._build(TaskGroup::with_executor(ex)).await
+    }
+
+    async fn _build(self, task_group: TaskGroup) -> Result<Arc<Server>> {
+        let listener: Listener<serde_json::Value> = match self.endpoint {
+            Endpoint::Tcp(..) | Endpoint::Tls(..) => match &self.tls_config {
+                Some(conf) => Box::new(
+                    karyon_net::tls::listen(
+                        &self.endpoint,
+                        karyon_net::tls::ServerTlsConfig {
+                            server_config: conf.clone(),
+                            tcp_config: self.tcp_config,
+                        },
+                        JsonCodec {},
+                    )
+                    .await?,
+                ),
+                None => Box::new(
+                    karyon_net::tcp::listen(&self.endpoint, self.tcp_config, JsonCodec {}).await?,
+                ),
+            },
+            #[cfg(feature = "ws")]
+            Endpoint::Ws(..) | Endpoint::Wss(..) => match &self.tls_config {
+                Some(conf) => Box::new(
+                    karyon_net::ws::listen(
+                        &self.endpoint,
+                        ServerWsConfig {
+                            tcp_config: self.tcp_config,
+                            wss_config: Some(karyon_net::ws::ServerWssConfig {
+                                server_config: conf.clone(),
+                            }),
+                        },
+                        WsJsonCodec {},
+                    )
+                    .await?,
+                ),
+                None => {
+                    let config = ServerWsConfig {
+                        tcp_config: self.tcp_config,
+                        wss_config: None,
+                    };
+                    Box::new(karyon_net::ws::listen(&self.endpoint, config, WsJsonCodec {}).await?)
+                }
+            },
+            #[cfg(all(feature = "unix", target_family = "unix"))]
+            Endpoint::Unix(..) => Box::new(karyon_net::unix::listen(
+                &self.endpoint,
+                Default::default(),
+                JsonCodec {},
+            )?),
+
+            _ => return Err(Error::UnsupportedProtocol(self.endpoint.to_string())),
+        };
+
+        Ok(Arc::new(Server {
+            listener,
+            task_group,
+            services: self.services,
+            pubsub_services: self.pubsub_services,
+        }))
+    }
+}
+
+impl Server {
+    /// Creates a new [`ServerBuilder`]
+    ///
+    /// This function initializes a `ServerBuilder` with the specified endpoint.
+    ///
+    /// # Example
+    ///
+    /// ```ignore
+    /// let builder = Server::builder("ws://127.0.0.1:3000")?.build()?;
+    /// ```
+    pub fn builder(endpoint: impl ToEndpoint) -> Result<ServerBuilder> {
+        let endpoint = endpoint.to_endpoint()?;
+        Ok(ServerBuilder {
+            endpoint,
+            services: HashMap::new(),
+            pubsub_services: HashMap::new(),
+            tcp_config: Default::default(),
+            tls_config: None,
+        })
+    }
+}
-- 
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