Merge pull request #73 from jdno/simplify-surrogate-key

Simplify the surrogate key for Fastly

Author: jdno

src/fastly.rs

@@ -17,10 +17,10 @@ impl Fastly {
     }
 
     pub fn purge(&mut self, path: &str) -> Result<(), Error> {
-        let sanitized_path = path.trim_start_matches('/');
+        let surrogate_key = path_to_surrogate_key(path);
         let url = format!(
             "https://api.fastly.com/service/{}/purge/{}",
-            self.service_id, sanitized_path
+            self.service_id, surrogate_key
         );
 
         self.start_new_request()?;
@@ -43,3 +43,21 @@ impl Fastly {
         Ok(())
     }
 }
+
+fn path_to_surrogate_key(path: &str) -> String {
+    path.chars().filter(|c| c.is_alphanumeric()).collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn path_to_surrogate_key_dist() {
+        let path = "/dist/*";
+
+        let surrogate_key = path_to_surrogate_key(path);
+
+        assert_eq!("dist", surrogate_key);
+    }
+}