Expose the operation name from GraphQLRequest

Measuring the runtime of queries will only tell if there are slow
queries. To find out which queries are slow you need the operation name.

Getting the operation name was previously not possible from a Rocket
request handler. This fixes that.

Author: davidpdrsn

juniper/src/http/mod.rs

@@ -36,7 +36,7 @@ where
     S: ScalarValue,
 {
     /// Returns the `operation_name` associated with this request.
-    fn operation_name(&self) -> Option<&str> {
+    pub fn operation_name(&self) -> Option<&str> {
         self.operation_name.as_ref().map(|oper_name| &**oper_name)
     }
 

juniper_rocket/CHANGELOG.md

@@ -1,6 +1,6 @@
 # master
 
-- No changes yet
+- Expose the operation name from `GraphQLRequest`.
 
 # [0.2.0] 2018-12-17
 

juniper_rocket/src/lib.rs

@@ -107,6 +107,21 @@ where
             ),
         }
     }
+
+    pub fn operation_name(&self) -> Option<&str> {
+        match self {
+            GraphQLBatchRequest::Single(req) => {
+                req.operation_name()
+            },
+            GraphQLBatchRequest::Batch(reqs) => {
+                if reqs.len() == 1 {
+                    reqs.get(0).and_then(|req| req.operation_name())
+                } else {
+                    None
+                }
+            },
+        }
+    }
 }
 
 impl<'a, S> GraphQLBatchResponse<'a, S>
@@ -173,6 +188,11 @@ where
 
         GraphQLResponse(status, json)
     }
+
+    /// Returns the `operation_name` associated with this request.
+    pub fn operation_name(&self) -> Option<&str> {
+        self.0.operation_name()
+    }
 }
 
 impl GraphQLResponse {