1 files changed, 11 insertions, 1 deletions

diff --git a/server/models/utils.ts b/server/models/utils.ts
index 4ebd07dab..f8a71b270 100644
--- a/server/models/utils.ts
+++ b/server/models/utils.ts
@@ -1,5 +1,6 @@
 import { Sequelize } from 'sequelize-typescript'
 import * as validator from 'validator'
+import { ACTIVITY_PUB } from '../initializers'
 
 type SortType = { sortModel: any, sortValue: string }
 
@@ -44,6 +45,14 @@ function getSortOnModel (model: any, value: string, lastSort: string[] = [ 'id',
   return [ firstSort, lastSort ]
 }
 
+function isOutdated (model: { createdAt: Date, updatedAt: Date }, refreshInterval: number) {
+  const now = Date.now()
+  const createdAtTime = model.createdAt.getTime()
+  const updatedAtTime = model.updatedAt.getTime()
+
+  return (now - createdAtTime) > refreshInterval && (now - updatedAtTime) > refreshInterval
+}
+
 function throwIfNotValid (value: any, validator: (value: any) => boolean, fieldName = 'value') {
   if (validator(value) === false) {
     throw new Error(`"${value}" is not a valid ${fieldName}.`)
@@ -108,7 +117,8 @@ export {
   throwIfNotValid,
   buildServerIdsFollowedBy,
   buildTrigramSearchIndex,
-  buildWhereIdOrUUID
+  buildWhereIdOrUUID,
+  isOutdated
 }
 
 // ---------------------------------------------------------------------------