Run cargo fmt in CI (#431)

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## Description

When I run `cargo fmt` on my branches, it makes more diff than I want.
This PR fixes that by adding `just format` / `just fmt`, and adding it
to a CI job.

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### Product
_(Select all products this will be available in)_
- [ ] community-edition
- [ ] cloud
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- [ ] enhancement
- [ ] bugfix
- [ ] behaviour-change
- [ ] performance-enhancement
- [ ] security-fix
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V3_GIT_ORIGIN_REV_ID: e31e352f27b9ad0129c3759fead051b1a8d86758

v3/crates/custom-connector/src/query.rs

@@ -433,13 +433,15 @@ fn eval_order_by_element(
             column,
             function,
         ),
-        ndc_models::OrderByTarget::StarCountAggregate { path } => eval_order_by_star_count_aggregate(
-            collection_relationships,
-            variables,
-            state,
-            item,
-            path,
-        ),
+        ndc_models::OrderByTarget::StarCountAggregate { path } => {
+            eval_order_by_star_count_aggregate(
+                collection_relationships,
+                variables,
+                state,
+                item,
+                path,
+            )
+        }
     }
 }
 
@@ -999,8 +1001,8 @@ pub(crate) fn eval_nested_field(
                 state,
                 &full_row,
             )?;
-            Ok(ndc_models::RowFieldValue(serde_json::to_value(row).map_err(
-                |_| {
+            Ok(ndc_models::RowFieldValue(
+                serde_json::to_value(row).map_err(|_| {
                     (
                         StatusCode::INTERNAL_SERVER_ERROR,
                         Json(ndc_models::ErrorResponse {
@@ -1008,8 +1010,8 @@ pub(crate) fn eval_nested_field(
                             details: serde_json::Value::Null,
                         }),
                     )
-                },
-            )?))
+                })?,
+            ))
         }
         ndc_models::NestedField::Array(ndc_models::NestedArray { fields }) => {
             let array: Vec<serde_json::Value> = serde_json::from_value(value).map_err(|_| {

v3/crates/engine/src/execute/explain.rs

@@ -223,7 +223,7 @@ async fn get_execution_steps<'s>(
 
 /// Get the join steps for a given join location. This should be used to get the join steps for a remote relationship.
 /// It also supports nested remote relationships.
-/// 
+///
 /// TODO: Currently the steps are sequential, we should make them parallel once the executor supports it.
 #[async_recursion]
 async fn get_join_steps(

v3/crates/engine/src/execute/ndc.rs

@@ -26,24 +26,28 @@ pub async fn execute_ndc_query<'n, 's>(
 ) -> Result<Vec<ndc_models::RowSet>, error::Error> {
     let tracer = tracing_util::global_tracer();
     tracer
-        .in_span_async("Execute query using data connector", SpanVisibility::User, || {
-            Box::pin(async {
-                set_attribute_on_active_span(
-                    AttributeVisibility::Default,
-                    "operation",
-                    execution_span_attribute,
-                );
-                set_attribute_on_active_span(
-                    AttributeVisibility::Default,
-                    "field",
-                    field_span_attribute,
-                );
-                let connector_response =
-                    fetch_from_data_connector(http_client, query, data_connector, project_id)
-                        .await?;
-                Ok(connector_response.0)
-            })
-        })
+        .in_span_async(
+            "Execute query using data connector",
+            SpanVisibility::User,
+            || {
+                Box::pin(async {
+                    set_attribute_on_active_span(
+                        AttributeVisibility::Default,
+                        "operation",
+                        execution_span_attribute,
+                    );
+                    set_attribute_on_active_span(
+                        AttributeVisibility::Default,
+                        "field",
+                        field_span_attribute,
+                    );
+                    let connector_response =
+                        fetch_from_data_connector(http_client, query, data_connector, project_id)
+                            .await?;
+                    Ok(connector_response.0)
+                })
+            },
+        )
         .await
 }
 
@@ -109,56 +113,60 @@ pub(crate) async fn execute_ndc_mutation<'n, 's, 'ir>(
 ) -> Result<json::Value, error::Error> {
     let tracer = tracing_util::global_tracer();
     tracer
-        .in_span_async("Execute mutation using data connector", SpanVisibility::User, || {
-            Box::pin(async {
-                set_attribute_on_active_span(
-                    AttributeVisibility::Default,
-                    "operation",
-                    execution_span_attribute,
-                );
-                set_attribute_on_active_span(
-                    AttributeVisibility::Default,
-                    "field",
-                    field_span_attribute,
-                );
-                let connector_response = fetch_from_data_connector_mutation(
-                    http_client,
-                    query,
-                    data_connector,
-                    project_id,
-                )
-                .await?;
-                // Post process the response to add the `__typename` fields
-                tracer.in_span("process_response", SpanVisibility::Internal, || {
-                    // NOTE: NDC returns a `Vec<RowSet>` (to account for
-                    // variables). We don't use variables in NDC queries yet,
-                    // hence we always pick the first `RowSet`.
-                    let mutation_results = connector_response
-                        .operation_results
-                        .into_iter()
-                        .next()
-                        .ok_or(error::InternalDeveloperError::BadGDCResponse {
-                            summary: "missing rowset".into(),
-                        })?;
-                    match process_response_as {
-                        ProcessResponseAs::CommandResponse {
-                            command_name: _,
-                            type_container,
-                        } => process_command_mutation_response(
-                            mutation_results,
-                            selection_set,
-                            type_container,
-                        ),
-                        _ => Err(error::Error::from(
-                            error::InternalEngineError::InternalGeneric {
-                                description: "mutations without commands are not supported yet"
-                                    .into(),
-                            },
-                        )),
-                    }
+        .in_span_async(
+            "Execute mutation using data connector",
+            SpanVisibility::User,
+            || {
+                Box::pin(async {
+                    set_attribute_on_active_span(
+                        AttributeVisibility::Default,
+                        "operation",
+                        execution_span_attribute,
+                    );
+                    set_attribute_on_active_span(
+                        AttributeVisibility::Default,
+                        "field",
+                        field_span_attribute,
+                    );
+                    let connector_response = fetch_from_data_connector_mutation(
+                        http_client,
+                        query,
+                        data_connector,
+                        project_id,
+                    )
+                    .await?;
+                    // Post process the response to add the `__typename` fields
+                    tracer.in_span("process_response", SpanVisibility::Internal, || {
+                        // NOTE: NDC returns a `Vec<RowSet>` (to account for
+                        // variables). We don't use variables in NDC queries yet,
+                        // hence we always pick the first `RowSet`.
+                        let mutation_results = connector_response
+                            .operation_results
+                            .into_iter()
+                            .next()
+                            .ok_or(error::InternalDeveloperError::BadGDCResponse {
+                                summary: "missing rowset".into(),
+                            })?;
+                        match process_response_as {
+                            ProcessResponseAs::CommandResponse {
+                                command_name: _,
+                                type_container,
+                            } => process_command_mutation_response(
+                                mutation_results,
+                                selection_set,
+                                type_container,
+                            ),
+                            _ => Err(error::Error::from(
+                                error::InternalEngineError::InternalGeneric {
+                                    description: "mutations without commands are not supported yet"
+                                        .into(),
+                                },
+                            )),
+                        }
+                    })
                 })
-            })
-        })
+            },
+        )
         .await
 }
 

v3/crates/engine/src/metadata/resolved/data_connector.rs

@@ -27,7 +27,10 @@ pub struct DataConnectorLink {
 }
 
 impl std::hash::Hash for DataConnectorLink {
-    fn hash<H>(&self, h: &mut H) where H: std::hash::Hasher {
+    fn hash<H>(&self, h: &mut H)
+    where
+        H: std::hash::Hasher,
+    {
         self.name.hash(h)
     }
 }

v3/justfile

@@ -44,6 +44,10 @@ ci-lint:
 fix:
   just docker_with_source_only sh -c "cargo clippy --no-deps --fix --allow-no-vcs -- {{ CLIPPY_FIX_ARGS }}; cargo fmt"
 
+format:
+  cargo fmt --check
+alias fmt := format
+
 fix-local:
   cargo clippy --no-deps --fix --allow-no-vcs -- {{ CLIPPY_FIX_ARGS }}; cargo fmt