fix: do not allow multiple request that would lead to a Relationship

Author: jkoenig134

packages/runtime/src/modules/RequestModule.ts

@@ -114,6 +114,25 @@ export class RequestModule extends RuntimeModule {
             return;
         }
 
+        const otherRequestsThatWouldLeadToARelationship = (
+            await services.consumptionServices.incomingRequests.getRequests({
+                query: { "source.type": "RelationshipTemplate", status: [LocalRequestStatus.Open, LocalRequestStatus.DecisionRequired, LocalRequestStatus.ManualDecisionRequired] }
+            })
+        ).value;
+        if (otherRequestsThatWouldLeadToARelationship.length !== 0) {
+            this.logger.info(
+                `There is already an open Request for a RelationshipTemplate that would lead to a Relationship with the creator of the RelationshipTemplate '${template.id}'. Skipping creation of a new Request.`
+            );
+            this.runtime.eventBus.publish(
+                new RelationshipTemplateProcessedEvent(event.eventTargetAddress, {
+                    template,
+                    result: RelationshipTemplateProcessedResult.NonCompletedRequestExists,
+                    requestId: otherRequestsThatWouldLeadToARelationship[0].id
+                })
+            );
+            return;
+        }
+
         const requestCreated = await this.createIncomingRequest(services, body.onNewRelationship, template.id);
 
         if (!requestCreated) {