swarm-controller: POST /api/notify/dry-run runs a draft flows document

swarm-controller/src/notify_flows.rs

@@ -165,6 +165,20 @@ pub(crate) fn unreadable(why: &DecodeError) -> ProblemDetails {
     )
 }
 
+/// The document a body describes, or the first way it fails
+/// [`Document::check`].
+pub(crate) fn checked_document(
+    disabled_builtins: Vec<String>,
+    flows: Vec<Flow>,
+) -> Result<Document, String> {
+    let doc = Document {
+        version: notify_flows::VERSION,
+        disabled_builtins,
+        flows,
+    };
+    doc.check().map(|()| doc)
+}
+
 /// Replace the flows.
 #[utoipa::path(
     put,
@@ -196,12 +210,7 @@ pub(crate) async fn put_flows(
     body: Result<Json<PutFlows>, JsonRejection>,
 ) -> Result<Json<FlowsView>, ProblemDetails> {
     let Json(put) = body.map_err(|e| error_problem(StatusCode::BAD_REQUEST, &e.body_text()))?;
-    let doc = Document {
-        version: notify_flows::VERSION,
-        disabled_builtins: put.disabled_builtins,
-        flows: put.flows,
-    };
-    doc.check()
+    let doc = checked_document(put.disabled_builtins, put.flows)
         .map_err(|why| error_problem(StatusCode::BAD_REQUEST, &why))?;
     let client = queue(&state).map_err(refused)?;
     let store = open(&client).await.map_err(|e| queue_problem(&e))?;