v0.29.0

src/config/snapshot.rs

@@ -261,6 +261,29 @@ where
 }
 
 impl CompiledRoute {
+    pub fn redirect_location(&self, path: &str, uri: &http::Uri) -> Result<Option<http::HeaderValue>> {
+        let Some(spec) = &self.redirect else {
+            return Ok(None);
+        };
+        let target = if let Some(regex) = &spec.rewrite_regex {
+            ensure!(regex.is_match(path), "location redirect rewrite regex did not match");
+            regex.replace(path, spec.target.as_str()).into_owned()
+        } else {
+            spec.target.clone()
+        };
+        let mut target = url::Url::parse(&target).context("invalid compiled location redirect target")?;
+        if spec.preserve_query {
+            if let Some(query) = uri.query() {
+                let merged = match target.query() {
+                    Some(existing) if !existing.is_empty() => format!("{existing}&{query}"),
+                    _ => query.to_owned(),
+                };
+                target.set_query(Some(&merged));
+            }
+        }
+        Ok(Some(http::HeaderValue::from_str(target.as_str()).context("invalid redirect Location header")?))
+    }
+
     /// Return a normalized replacement path for the upstream hop. `None` means
     /// preserve the client's exact origin-form path bytes.
     pub fn rewritten_path(&self, path: &str) -> Result<Option<String>> {