package Ġbr . com . gui ab ol so . connector . handlers . oauth Ċ Ċ import Ġbr . com . gui ab ol so . connector . event . misc . required String Ċ import Ġbr . com . gui ab ol so . connector . user . User Authorization Service Ċ import Ġbr . com . gui ab ol so . events . builder . Event Builder Ċ import Ġbr . com . gui ab ol so . events . model . Request Event Ċ import Ġbr . com . gui ab ol so . events . model . Response Event Ċ import Ġbr . com . gui ab ol so . events . server . handler . EventHandler Ċ import Ġorg . springframework . stereotype . Component Ċ Ċ @ Component Ċ class ĠUser Authorization EventHandler ( ĊĠĠĠ Ġprivate Ġval Ġuser Authorization Service : ĠUser Authorization Service Ċ ) Ġ: ĠEventHandler Ġ{ ĊĠĠĠ Ġoverride Ġval ĠeventName Ġ= Ġ" is : user : authorized " ĊĠĠĠ Ġoverride Ġval Ġevent Version Ġ= Ġ 1 ĊĊĠĠĠ Ġoverride Ġfun Ġhandle ( event : ĠRequest Event ): ĠResponse Event Ġ{ ĊĠĠĠĠĠĠĠ Ġval ĠuserId Ġ= Ġevent . identity . required String (" userId ") ĊĠĠĠĠĠĠĠ Ġreturn ĠEvent Builder . response For ( event ) Ġ{ ĊĠĠĠĠĠĠĠĠĠĠĠ Ġpayload Ġ= Ġuser Authorization Service . is User Authorized ( userId ) ĊĠĠĠĠĠĠĠ Ġ} ĊĠĠĠ Ġ} Ċ } Ċ