Revert greeter.rs

Author: slinkydeveloper

examples/greeter.rs

@@ -1,37 +1,16 @@
 use restate_sdk::prelude::*;
-use std::time::Duration;
-use tracing::info;
+use std::convert::Infallible;
 
 #[restate_sdk::service]
 trait Greeter {
-    async fn sleep() -> Result<(), HandlerError>;
-    async fn do_stuff() -> Result<String, HandlerError>;
+    async fn greet(name: String) -> Result<String, Infallible>;
 }
 
 struct GreeterImpl;
 
 impl Greeter for GreeterImpl {
-    async fn sleep(&self, ctx: Context<'_>) -> Result<(), HandlerError> {
-        ctx.sleep(Duration::from_secs(120)).await?;
-        Ok(())
-    }
-
-    async fn do_stuff(&self, ctx: Context<'_>) -> Result<String, HandlerError> {
-        let call_handle = ctx.service_client::<GreeterClient>()
-            .sleep()
-            .call();
-
-        info!("Invocation id {}", call_handle.invocation_id().await?);
-
-        ctx.sleep(Duration::from_secs(5)).await?;
-
-        // Now cancel it
-        call_handle.cancel();
-
-        // Now await it
-        call_handle.await?;
-
-        Ok("This should have failed".to_string())
+    async fn greet(&self, _: Context<'_>, name: String) -> Result<String, Infallible> {
+        Ok(format!("Greetings {name}"))
     }
 }