[FSSDK-11132] make entity validation configurable in bucketer

for cmab, we are using a dummy entityId which is not a real
variation id. We need to skip entity validation for cmab experiments.

Author: raju-opti

lib/core/bucketer/index.ts

@@ -138,17 +138,16 @@ export const bucket = function(bucketerParams: BucketerParams): DecisionResponse
   ]);
 
   const entityId = _findBucket(bucketValue, bucketerParams.trafficAllocationConfig);
-  if (entityId !== null) {
-    if (!bucketerParams.variationIdMap[entityId]) {
-      if (entityId) {        
-        bucketerParams.logger?.warn(INVALID_VARIATION_ID);
-        decideReasons.push([INVALID_VARIATION_ID]);
-      }
-      return {
-        result: null,
-        reasons: decideReasons,
-      };
+  
+  if (bucketerParams.validateEntity && entityId !== null && !bucketerParams.variationIdMap[entityId]) {
+    if (entityId) {        
+      bucketerParams.logger?.warn(INVALID_VARIATION_ID);
+      decideReasons.push([INVALID_VARIATION_ID]);
     }
+    return {
+      result: null,
+      reasons: decideReasons,
+    };
   }
 
   return {

lib/core/decision_service/index.ts

@@ -594,12 +594,16 @@ export class DecisionService {
     bucketingId: string,
     userId: string
   ): BucketerParams {
+    let validateEntity = true;
+
     let trafficAllocationConfig: TrafficAllocation[] = getTrafficAllocation(configObj, experiment.id);
     if (experiment.cmab) {
       trafficAllocationConfig = [{
         entityId: CMAB_DUMMY_ENTITY_ID,
         endOfRange: experiment.cmab.trafficAllocation
       }];
+
+      validateEntity = false;
     }
 
     return {
@@ -613,6 +617,7 @@ export class DecisionService {
       trafficAllocationConfig,
       userId,
       variationIdMap: configObj.variationIdMap,
+      validateEntity,
     }
   }
 

lib/shared_types.ts

@@ -64,6 +64,7 @@ export interface BucketerParams {
   variationIdMap: { [id: string]: Variation };
   logger?: LoggerFacade;
   bucketingId: string;
+  validateEntity?: boolean;
 }
 
 export interface DecisionResponse<T> {