misc: boxed error

src/error.rs

@@ -213,7 +213,7 @@ pub enum ParseRequestError {
 
     /// The request's syntax was invalid.
     #[error("Invalid request: {0}")]
-    InvalidRequest(serde_json::Error),
+    InvalidRequest(Box<dyn std::error::Error>),
 
     /// The request's files map was invalid.
     #[error("Invalid files map: {0}")]

src/http/mod.rs

@@ -52,15 +52,17 @@ pub async fn receive_batch_json(body: impl AsyncRead) -> Result<BatchRequest, Pa
     body.read_to_end(&mut data)
         .await
         .map_err(ParseRequestError::Io)?;
-    Ok(serde_json::from_slice::<BatchRequest>(&data).map_err(ParseRequestError::InvalidRequest)?)
+    Ok(serde_json::from_slice::<BatchRequest>(&data)
+        .map_err(|e| ParseRequestError::InvalidRequest(Box::new(e)))?)
 }
 
-
+/// Receive a GraphQL request from a body as CBOR
 pub async fn receive_batch_cbor(body: impl AsyncRead) -> Result<BatchRequest, ParseRequestError> {
     let mut data = Vec::new();
     futures_util::pin_mut!(body);
     body.read_to_end(&mut data)
         .await
         .map_err(ParseRequestError::Io)?;
-    Ok(serde_cbor::from_slice::<BatchRequest>(&data).map_err(ParseRequestError::InvalidRequest)?)
+    Ok(serde_cbor::from_slice::<BatchRequest>(&data)
+        .map_err(|e| ParseRequestError::InvalidRequest(Box::new(e)))?)
 }

src/http/multipart.rs

@@ -70,7 +70,7 @@ pub(super) async fn receive_batch_multipart(
                 let request_str = field.text().await?;
                 request = Some(
                     serde_json::from_str::<BatchRequest>(&request_str)
-                        .map_err(ParseRequestError::InvalidRequest)?,
+                        .map_err(|e| ParseRequestError::InvalidRequest(Box::new(e)))?,
                 );
             }
             Some("map") => {