Add allow_component_validation_failures config option

When `true`, the graph will be considered valid even if validation
failed for some of the components.

Signed-off-by: Sahas Subramanian <[email protected]>

Author: shsms

src/config.rs

@@ -6,6 +6,11 @@
 /// Configuration options for the `ComponentGraph`.
 #[derive(Clone, Default, Debug)]
 pub struct ComponentGraphConfig {
+    /// Whether to allow validation errors on components.  When this is `true`,
+    /// the graph will be built even if there are validation errors on
+    /// components.
+    pub allow_component_validation_failures: bool,
+
     /// Whether to allow unconnected components in the graph, that are not
     /// reachable from the root.
     pub allow_unconnected_components: bool,

src/graph/validation.rs

@@ -55,7 +55,7 @@ where
         ] {
             if let Err(e) = result {
                 errors.push(e);
-                validation_failed = true;
+                validation_failed = !self.config.allow_component_validation_failures;
             }
         }
         match errors.len() {

src/graph/validation/validate_neighbors.rs

@@ -275,6 +275,7 @@ r#"InvalidGraph: Multiple validation failures:
             TestConnection::new(2, 3),
             TestConnection::new(3, 4),
         ];
+        // With default config, this validation fails
         assert!(
             ComponentGraph::try_new(components.clone(), connections.clone(), config.clone())
                 .is_err_and(|e| {
@@ -283,6 +284,16 @@ r#"InvalidGraph: Multiple validation failures:
                     )
                 }),
         );
+        // With `allow_component_validation_failures=true`, this would pass.
+        assert!(ComponentGraph::try_new(
+            components.clone(),
+            connections.clone(),
+            ComponentGraphConfig {
+                allow_component_validation_failures: true,
+                ..config.clone()
+            }
+        )
+        .is_ok());
 
         components.pop();
         connections.pop();