Authentication flow for data publishing

WSO2 Open Banking Intelligence captures data elements in the authentication flow for data publishing. This document explains how you can extend the authentication flow in order to publish the data elements according to your open banking standard in two methods:

1. Using a script
2. Writing a custom method

Using a script¶

1. Sign in to the Management Console of WSO2 Identity Server.
2. In the Main tab, click Identity -> Service Providers -> List.
3. Select the Service Provider from the list and click Edit.
4. Select Local & Outbound Authentication Configuration and click Advanced Configuration.
5. Add necessary authentication steps and include a script based authentication function. See the sample function given below. This function publishes data on:
   • a user attempting authentication.
   • whether the authentication is successful or failed.

     var psuChannel = 'Online Banking';
     
     var onLoginRequest = function(context) {
         publishAuthData(context, "AuthenticationAttempted", {'psuChannel': psuChannel});
         executeStep(1, {
             onSuccess: function (context) {
                 Log.info("Authentication Successful");
                 publishAuthData(context, "AuthenticationSuccessful", {'psuChannel': psuChannel});
             },
             onFail: function (context) {
                 Log.info("Authentication Failed");
                 publishAuthData(context, "AuthenticationFailed", {'psuChannel': psuChannel});
             }
         });
     };

     According to the sample function,
   • Data is published when authentication is attempted even if it fails.
   • executeStep denotes the authentication step. According to the example, it is the first authentication step.
   • publishAuthData is the function that publishes the data elements from the authentication flow.

Writing a method¶

1. To implement custom data publishing, extend the following DefaultAuthDataPublisher class:

   com.wso2.openbanking.accelerator.authentication.data.publisher.extension.DefaultAuthDataPublisher

   • By default, DefaultAuthDataPublisher returns an empty map of data. To send additional data when authentication happens, override the getAdditionalData method.

getAdditionalData method¶

• The JSAuthenticationContext parameter contains a large amount of authentication related data. These data can be obtained by following the common format below:

  context.getWrapped(). < getmethods >

• The authenticationStatus parameter depends on the values passed by the adaptive authentication script.
• For example,

@Override
public Map < String, Object > getAdditionalData(JsAuthenticationContext context, String authenticationStatus) {

  HashMap < String, Object > newMap = new HashMap < String, Object > (); <
  Declaring necessary variables >

    if (“AuthenticationAttempted”.equals(authenticationStatus)) {

      // Retrieves some data from context object 

      // Manipulate data as necessary 
    } else {

      // Retrieves some data from context object 

      // Manipulate data as necessary 
    }
  // Append new data to HashMap < String, Object >

  return newMap;
}

[open_banking.data_publishing]
auth_data_publisher = "<FQN of the extended class>"

[[open_banking.data_publishing.thrift.stream]]
name="AuthenticationInputStream"

[[open_banking.data_publishing.thrift.stream.attributes]]
name="timestamp"
priority=6
required=true
type="long"

• The property, required is treated as false if not explicitly mentioned.
• The property, type is treated as string if not explicitly mentioned.