Deploying Dynamic Client Registration API v3.2

This document explains how to publish the Dynamic Client Registration API v3.2 in WSO2 Open Banking.

Prerequisite

Open the <WSO2_OB_APIM_HOME>/repository/resources/api_templates/velocity_template.xml file and add the following handler after GatewayClientAuthenticationHandler in the #if($apiObj.additionalProperties.get("ob-api-type") == "dcr" || $!apiName == "DynamicClientRegistrationAPI") section.
```
<handler class="org.wso2.carbon.apimgt.gateway.handlers.ext.APIManagerCacheExtensionHandler"/>
```

Open the <WSO2_OB_APIM_HOME>/repository/conf/axis2/axis2.xml file, do the following configurations and restart the API Manager server.

Add the following under the <messageFormatters> tag:

<messageFormatters>
    <messageFormatter contentType="application/jose"
                          class="org.apache.axis2.format.PlainTextFormatter"/>

Add the following under the <messageBuilders> tag:

<messageBuilders>
    <messageBuilder contentType="application/jose"
                        class="org.apache.axis2.format.PlainTextBuilder"/>

Sign in to the /wiki/spaces/OB140/pages/29394577 ( https://<WSO2_OB_APIM_HOST>:9443/publisher) with creator/publisher privileges.
Click ADD NEW API .
Select I Have an Existing API option.
Select the Swagger File option and browse for the Swagger definition by clicking the Browse button.
Use the <WSO2_OB_APIM_HOME>/repository/resources/finance/apis/openbanking.org.uk/DynamicClientRegistration/3.2/dynamic-client-registration-swagger.yaml file to configure the properties according to the open-banking specification.
You are directed to the Design API stage. Design General Details are loaded for you in the Design tab.
Click Next: Implement to navigate to the next level.
Expand Managed API and set Endpoint Type by selecting Dynamic Endpoint from the drop-down list.
Under Message Mediation Policies, check Select a message mediation policy to be executed in the message flow.
Uploading the In flow:
Make the following changes:
Open the <WSO2_OB_APIM_HOME>/repository/resources/finance/apis/openbanking.org.uk/DynamicClientRegistration/3.2/dcr-dynamic-endpoint-insequence-3.2.xml In sequence file using a text editor.
1. Add theContentTypeproperty below the <sequence>tag:
  <property name="ContentType" value="application/jwt" scope="axis2"/>
2. Replace <WSO2_OB_APIM_HOSTNAME> with the hostname of your WSO2 Open Banking API Manager server and save the changes.
  <header name="To" value="https://<WSO2_OB_APIM_HOSTNAME>:9443/ob-dynamic-client-registration" />
Click Upload In Flow and upload the modified dcr-dynamic-endpoint-insequence-3.2.xml In sequence file.
Click Next: Manage to navigate to the next level.
Under Subscription Tiers, check the option Unlimited : Allows unlimited requests unless you want to limit the requests.
Expand API Properties and add the following as Additional properties and click the + button to proceed.

Property Name ob-api-type
Property Value dcr

Configure the open banking specification, API type, and the API version for the DCR API you deploy as follows:

This is available only as a WUM update and is effective from June 07, 2020 (06-07-2019). For more information on updating WSO2 Open Banking, see Updating WSO2 Products.
Click here to see how to configure

Property Name Property Value
ob-api-type dcr
ob-api-version 3.2
Click Save & Publish.
The published DCR v3.2 API is available in the API Store.

You can find the REST API documentation for Dynamic Client Registration v3.2 here.

Property Name	ob-api-type
Property Value	dcr

Property Name	Property Value
ob-api-type	dcr
ob-api-version	3.2