feat: resolve Fn::ImportValue

aws · Sep 26, 2023 · 8cb7e2b · 8cb7e2b
1 parent aac22fa
commit 8cb7e2b
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/packages/aws-cdk/lib/api/evaluate-cloudformation-template.ts b/packages/aws-cdk/lib/api/evaluate-cloudformation-template.ts
@@ -144,6 +144,7 @@ export class EvaluateCloudFormationTemplate {
       partition: this.partition,
       urlSuffix: this.urlSuffix,
       listStackResources: listNestedStackResources,
+      lookupExport: this.lookupExport,
     });
   }
 
@@ -249,6 +250,14 @@ export class EvaluateCloudFormationTemplate {
           }
         });
       }
+
+      async 'Fn::ImportValue'(name: string): Promise<string> {
+        const exported = await self.lookupExport.lookupExport(name);
+        if (!exported.Value) {
+          throw new CfnEvaluationException(`Export '${name}' exists without a value`);
+        }
+        return exported.Value;
+      }
     }
 
     if (cfnExpression == null) {