Scaffold Rust client workspace

clients/rust/src/client.rs

@@ -0,0 +1,30 @@
+use tonic::transport::Channel;
+
+use crate::error::Error;
+use crate::generated::mxaccess_gateway::v1::mx_access_gateway_client::MxAccessGatewayClient;
+use crate::options::ClientOptions;
+
+/// Thin owner for the generated gateway client.
+pub struct GatewayClient {
+    inner: MxAccessGatewayClient<Channel>,
+}
+
+impl GatewayClient {
+    pub async fn connect(options: ClientOptions) -> Result<Self, Error> {
+        let endpoint = Channel::from_shared(options.endpoint().to_owned()).map_err(|source| {
+            Error::InvalidEndpoint {
+                endpoint: options.endpoint().to_owned(),
+                detail: source.to_string(),
+            }
+        })?;
+        let channel = endpoint.connect().await?;
+
+        Ok(Self {
+            inner: MxAccessGatewayClient::new(channel),
+        })
+    }
+
+    pub fn into_inner(self) -> MxAccessGatewayClient<Channel> {
+        self.inner
+    }
+}