Push new feature: auto config for S3.

examples/simple.rs

@@ -1,12 +1,27 @@
-use slingshot_microservice::Microservice;
+use slingshot_microservice::{Microservice, ProcessFuture, ReadFileFn, WriteFileFn};
+use std::io::Write;
+use tokio::io::AsyncReadExt;
 
-fn process(request: u64) -> Vec<(u64, String)> {
-    vec![(request, "case_a".to_string())]
+fn process<'a>(
+	request: u64,
+	read_file: &'a ReadFileFn,
+	write_file: &'a WriteFileFn,
+) -> ProcessFuture<'a, String> {
+	Box::pin(async move {
+		let mut input = String::new();
+		let mut reader = read_file("in", request)?;
+		reader.read_to_string(&mut input).await?;
+
+		let mut writer = write_file("out", request)?;
+		writer.write_all(input.as_bytes())?;
+
+		Ok(vec![(request, "case_a".to_string())])
+	})
 }
 
 fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-    let microservice = Microservice::new("simple-microservice", "sys-map.slingshot.cv", process);
+	let microservice = Microservice::new("simple-microservice", "sys-map.slingshot.cv", process);
 
-    microservice.start()?;
-    Ok(())
+	microservice.start()?;
+	Ok(())
 }