Add support for session tags

src/aws/config.rs

@@ -90,6 +90,10 @@ pub struct Config {
     /// - this field if it's `is_some`.
     /// - profile config: `external_id`
     pub external_id: Option<String>,
+    /// `tags` value will be loaded from:
+    ///
+    /// - this field if it's `is_some`
+    pub tags: Option<Vec<String>>,
     /// `web_identity_token_file` value will be loaded from:
     ///
     /// - this field if it's `is_some`
@@ -118,6 +122,7 @@ impl Default for Config {
             role_session_name: "reqsign".to_string(),
             duration_seconds: Some(3600),
             external_id: None,
+            tags: None,
             web_identity_token_file: None,
             ec2_metadata_disabled: false,
         }

src/aws/credential.rs

@@ -422,6 +422,17 @@ impl AssumeRoleLoader {
         if let Some(duration_seconds) = &self.config.duration_seconds {
             write!(url, "&DurationSeconds={duration_seconds}")?;
         }
+        if let Some(tags) = &self.config.tags {
+            for (idx, tag) in tags.iter().enumerate() {
+                let parts = tag.split("=").collect::<Vec<&str>>();
+                let key = parts[0];
+                let value = parts[1];
+                write!(
+                    url,
+                    "&Tags.member.{idx}.Key={key}&Tags.member.{idx}.Value={value}"
+                )?;
+            }
+        }
 
         let req = http::request::Request::builder()
             .method("GET")