Feat/region (#132)

* add region config

rustfs/src/config/mod.rs

@@ -86,6 +86,9 @@ pub struct Opt {
 
     #[arg(long, env = "RUSTFS_LICENSE")]
     pub license: Option<String>,
+
+    #[arg(long, env = "RUSTFS_REGION")]
+    pub region: Option<String>,
 }
 
 // lazy_static::lazy_static! {

rustfs/src/main.rs

@@ -174,6 +174,10 @@ async fn setup_tls_acceptor(tls_path: &str) -> Result<Option<TlsAcceptor>> {
 async fn run(opt: config::Opt) -> Result<()> {
     debug!("opt: {:?}", &opt);
 
+    if let Some(region) = opt.region {
+        rustfs_ecstore::global::set_global_region(region);
+    }
+
     let server_addr = parse_and_resolve_address(opt.address.as_str()).map_err(Error::other)?;
     let server_port = server_addr.port();
     let server_address = server_addr.to_string();

rustfs/src/storage/ecfs.rs

@@ -703,6 +703,12 @@ impl S3 for FS {
             .await
             .map_err(ApiError::from)?;
 
+        if let Some(region) = rustfs_ecstore::global::get_global_region() {
+            return Ok(S3Response::new(GetBucketLocationOutput {
+                location_constraint: Some(BucketLocationConstraint::from(region)),
+            }));
+        }
+
         let output = GetBucketLocationOutput::default();
         Ok(S3Response::new(output))
     }