Create Hooks for MultiServiceAppHandler

The Multisite APIs provide an option to write custom pre- and post-hooks for each API to implement custom logic. A pre-hook is run before the actual API runs. A post-hook runs after the actual API runs.

1. Write the custom class to implement the pre and post hook.

   Example code:

   1 global with sharing class MSCustomHookImplementation implements vlocity_cmt.VlocityOpenInterface
   2 {
   3  global Boolean invokeMethod(String methodName, Map<String, Object> input, Map<String, Object> output, Map<String, Object> options) 
   4  {
   5    if( methodName.equalsIgnoreCase('getGroups.PreInvoke')) 
   6    {
   7      getGroups_PreInvoke(methodName, input, output,options);
   8      return true;
   9    }
   10    
   11    if( methodName.equalsIgnoreCase('getGroups.PostInvoke'))
   12    {
   13      getGroups_PostInvoke(methodName, input, output,options);
   14      return true;
   15    }
   16    
   17    return false;
   18  }
   19  
   20  private void getGroups_PreInvoke(String methodName, Map<String, Object> input, Map<String, Object> output, Map<String, Object> options) 
   21  {
   22    //This method gets called before getGroups
   23  }
   24  private void getGroups_PostInvoke(String methodName, Map<String, Object> input, Map<String, Object> output, Map<String, Object> options) 
   25  {
   26    //This method gets called after getGroups
   27  }
   

2. Create the interface implementation.

   • From the App Launcher, click Interface Implementations.

   • Click New.

   • In the New Interface Implementation dialog, enter the following:

     • Interface Name: MSAppHandlerHookInterface

     • Active Implementation Class: MSCustomHookImplementation (Name of Custom Class)

   • Click Save.

3. Create a new Interface Implementation Detail for the interface created above.

   • On the Related tab for your new custom interface implementation, click New.

   • In the New Interface Implementation Detail dialog, enter MSCustomHookImplementation for Available Implementation.

   • Click Active to make this implementation the active implementation.

   • Click Save.