Subscription
In order for theOperationHook to be notified each time a document is created, a subscription must be defined:
- Go to the Administration > Configuration > Operations subscriptions section
 - Click on the + button to create a new subscription
 
In the subscription creation form, fill in the following fields:
OperationHandler: enter the hook’s HTTP URL (e.g. http://localhost:7777/modify).Execution phase: select theBeforephase so that the name change is applied before the document is persistedAction: to react to a creation, select theCreateactionObject ype: choose theDocumenttypeActivated: tick the checkbox to activate your subscriptionAuthorization: fill in the BASIC authorisation string using Blitter from the user defined in the application.properties file (example: Basic dG90bzoxMjM0)
Finally, confirm the creation of the subscription.
Validation
In order to test that theOperationHook implemented is operational:
- create a document by the means of your choice (e.g. via the admin console)
 - open the created document
 
IfOperationHook has been configured correctly, the creation timestamp has been added to the name of the document created.
If the name has not been changed, check that
        OperationHook has been started and is accessible from FlowerDocs Core.
If this is the case, check the logs for more details.