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Tip
titleBefore you begin
  1. Create a user with Internal/creator and Internal/publisher roles using https://<OBKM_HOSTNAME>:9446/carbon. To create users and roles, see configuring users and roles, which elaborates the steps to create the user as the API publisher.
  2. Set endpoints in the velocity_template.xml file.
  3. Configure sequence files.

Configuring

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In the WSO2 Open Banking Berlin v1.1, it is mandatory to configure APIs for:

  • Accounts API v1.1
  • Payments API v1.1

Given below is the general procedure to configure and publish an API. 

Tip

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MultiExcerptNameConfiguringAPIs

Sign in to the API Publisher ( https:// localhost:9443/publisher ) with the a user whose roles include Internal/publisher. Follow the steps given below:

Click ADD NEW API > I have an existing API

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the velocity_template.xml file

velocity_template  file checks the deployed specification. The velocity_template.xml file in the <WSO2_OBAM_HOME>/repository/resources/api_templates/velocity_template.xml file, is by default configured to support berlin specification with the following handler. 

Code Block
languagexml
<handler class="com.wso2.finance.open.banking.berlin.consent.enforcement.ConsentEnforcementHandler">
    <property name="accountValidationUrl" value="https://<OBKM_HOST>:9446/consent/berlin110/accounts-validation"/>
    <property name="keyStore" value="./repository/resources/security/wso2carbon.jks"/>
    <property name="password" value="wso2carbon"/>
    <property name="alias" value="wso2carbon"/>
</handler>


Configuring sequence files

Sequence files for Accounts and Payments must be updated separately in the <WSO2_OBAM_HOME>/repository/resources/finance/apis / berlin-group.org /

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Click Next: Manage to navigate to the next level.

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Expand API Properties and add the following values as Additional properties:

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Property Name

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Property Value

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Click the + button to save the above values.

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Click Save & Publish.

Summarized information for configuring APIs

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Specification

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In flow

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Configuring the velocity_template.xml file

velocity_template  file checks the deployed specification. The velocity_template.xml file in the <WSO2_OBAM_HOME>/repository/resources/api_templates/velocity_template.xml file, is by default configured to support berlin specification with the following handler. 

Code Block
<handler class="com.wso2.finance.open.banking.berlin.consent.enforcement.ConsentEnforcementHandler">
    <property name="accountValidationUrl" value="https://<OBKM_HOST>:9446/consent/berlin110/accounts-validation"/>
    <property name="keyStore" value="./repository/resources/security/wso2carbon.jks"/>
    <property name="password" value="wso2carbon"/>
    <property name="alias" value="wso2carbon"/>
</handler>

Configuring sequence files

Sequence files for Accounts and Payments must be updated separately in the <WSO2_OBAM_HOME>/repository/resources/finance/apis / berlin-group.org / <Name of the API> . Update the value of the <OBKM_HOSTNAME> with the hostname of the WSO2 Open Banking Key Manager server. 

By default, WSO2 Open Banking API Manager includes a mock bank backend, which is configured by default in the In sequences. Ideally, the two occurrences of https://<OBAM_HOSTNAME>:9443/open-banking/services/accounts/accountservice should be replaced by the core banking system's API endpoints corresponding to the production, and sandbox environments respectively. For more information, see Integrating Core Banking System for Berlin.

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languagexml
titleAccountsAPI

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<Name of the API> . Update the value of the <OBKM_HOSTNAME> with the hostname of the WSO2 Open Banking Key Manager server. 

By default, WSO2 Open Banking API Manager includes a mock bank backend, which is configured by default in the In sequences. Ideally, the two occurrences of https://<OBAM_HOSTNAME>:9443/open-banking/services/accounts/accountservice should be replaced by the core banking system's API endpoints corresponding to the production, and sandbox environments respectively. For more information, see Integrating Core Banking System for Berlin

Localtabgroup
Localtab
titleAccounts API
Code Block
languagexml
<sequence xmlns="http://ws.apache.org/ns/synapse" name="accounts-dynamic-endpoint-insequence-2.0.0">
    <property name="endpointURI" expression="get-property('To')"/>
    <header name="TPP-Unique-ID" expression="get-property('api.ut.consumerKey')" scope="transport"/>
    <filter regex=".*\/consents.*" source="$ctx:endpointURI">
        <then>
            <property name="resourcepath" scope="default" type="STRING" value=""/>
            <property expression="get-property('resourcepath')" name="REST_URL_POSTFIX" scope="axis2" type="STRING"/>
            <header name="To" expression="fn:concat('https://<OBKM_HOST>:9446/consent/berlin110' , get-property('api.ut.resource'))"/>

            <rewrite>
                <rewriterule>
        
<then>
            <action 
<property name
type="
resourcepath
replace" 
scope
regex="
default
\/consents" 
type
value="
STRING
\/accounts" 
value
fragment="path"/>
            
<property
 
expression="get-property('resourcepath')"
 
name="REST_URL_POSTFIX"
 
scope="axis2" type="STRING"/>
 </rewriterule>
            </rewrite>

      
<header
 
name="To" expression="fn:concat('https://<OBKM_HOST>:9446/consent/berlin110' , get-property('api.ut.resource'))"/>
 </then>
        <else>
        
<rewrite>
    <filter source="$ctx:AM_KEY_TYPE" regex="PRODUCTION">
          
<rewriterule>
      <then>
              
<action
 
type="replace" regex="\/consents
     <header name="To" value="
\/accounts" fragment="path
https://<OBAM_HOST>:9443/open-banking-berlin/services/accounts"/>
                </
rewriterule>
then>
            
</rewrite>
    <else>
     
</then>
         
<else>
      <header 
<filter source="$ctx:AM_KEY_TYPE" regex="PRODUCTION">
name="To" value="https://<OBAM_HOST>:9443/open-banking-berlin/services/accounts"/>
                </else>
          
<then>
  </filter>
        </else>
    </filter>
    
<header
<property 
name
expression="get-property('To')" 
value
name="
https://<OBAM_HOST>:9443/open-banking-berlin/services/accounts"/> </then>
ENDPOINT_ADDRESS"/>
</sequence>
Localtab
titlePayments API
Code Block
languagexml
<sequence xmlns="http://ws.apache.org/ns/synapse" name="payments-dynamic-endpoint-insequence-2.0.0">
    <property name="endpointURI" expression="get-property('To')"/>
    <filter source="$ctx:endpointURI" regex=".*payments.*">
     
<else>
   <then>
            
<header name="To" value="https://<OBAM_HOST>:9443/open-banking-berlin/services/accounts
<header name="TPP-Unique-ID" scope="transport" expression="get-property('api.ut.consumerKey')"/>
            
</else>
<filter source="get-property('api.ut.HTTP_METHOD')" regex="POST">
                <then>
 
</filter>
         
</else>
     
</filter>
     
<property
<header 
expression
name="
get-property('
To
')
" 
name
value="
ENDPOINT_ADDRESS
https://<OBKM_HOST>:9446/consent/berlin110/payments"/>
</sequence>
Code Block
languagexml
titlePaymentsAPI
<sequence xmlns="http://ws.apache.org/ns/synapse" name="payments-dynamic-endpoint-insequence-2.0.0">
              
<property
 
name="endpointURI"
 
expression="get-property('To')"/>
    <filter source="$ctx:endpointURI" regex="
.*payments.*">
^((?!\/bulk-payments).)*$">
         
<then>
             
<header
 
name="TPP-Unique-ID" scope="transport" expression="get-property('api.ut.consumerKey')"/>
 <then>
             
<filter
 
source="get-property('api.ut.HTTP_METHOD')"
 
regex="POST">
             
<payloadFactory media-type="json">
 
<then>
                     
<header
 
name="To"
 
value="https://<OBKM_HOST>:9446/consent/berlin110/payments"/>
        <format>[$1]</format>
             
<filter
 
source="$ctx:endpointURI"
 
regex="^((?!\/bulk-payments).)*$">
                 <args>
       
<then>
                             
<payloadFactory
<arg 
media-type
evaluator="json" expression="$"/>
                                
<format>[$1]
</
format>
args>
                            </payloadFactory>
    
<args>
                    </then>
                
<arg
 
evaluator="json"
 
expression="$"/>
  </filter>
                </then>
             
</args>
   <else>
                    <filter source="get-property('api.ut.HTTP_METHOD')" regex="GET">
  
</payloadFactory>
                      <then>
  
</then>
                     
</filter>
     <property name="resourcePath" scope="default" 
</then>
type="STRING" value=""/>
                
<else>
            
<filter source
<property expression="get-property('
api.ut.HTTP_METHOD
resourcePath')" 
regex
name="
GET
REST_URL_POSTFIX"
>
 scope="axis2"
                       
<then>
               
<property name="resourcePath" scope="default" type="STRING" value="
type="STRING"/>

                           
<property expression="get-property('resourcePath')"
 <header name="
REST_URL_POSTFIX" scope="axis2
To"
                                    
type="STRING"/>
expression="fn:concat('https://<OBKM_HOST>:9446/consent/berlin110', get-property('api.ut.resource'))"/>

                            <rewrite>
          
<header
 
name="To"
                   <rewriterule>
                 
expression="fn:concat('https://<OBKM_HOST>:9446/consent/berlin110',
 
get-property('api.ut.resource'))"/>
              <action type="replace" regex="\/payments\/sepa-credit-transfers" value="\/payments" fragment="path"/>
           
<rewrite>
                     <action type="replace" regex="\/payments\/instant-sepa-credit-transfers" 
<rewriterule>
value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/payments\/
sepa
target-
credit
2-
transfers
payments" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/payments\/
instant
cross-
sepa
border-credit-transfers" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/bulk-payments\/
target
sepa-
2
credit-
payments
transfers" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/bulk-payments\/
cross
instant-
border
sepa-credit-transfers" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/bulk-payments\/
sepa
target-
credit
2-
transfers
payments" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/bulk-payments\/
instant
cross-
sepa
border-credit-transfers" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/
bulk
periodic-payments\/
target
sepa-
2
credit-
payments
transfers" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/
bulk
periodic-payments\/
cross
instant-
border
sepa-credit-transfers" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/periodic-payments\/
sepa
target-
credit
2-
transfers
payments" value="\/payments" fragment="path"/>
                                <action type="replace" regex="\/periodic-payments\/
instant
cross-
sepa
border-credit-transfers" value="\/payments" fragment="path"/>
                              </rewriterule>
  
<action
 
type="replace"
 
regex="\/periodic-payments\/target-2-payments" value="\/payments" fragment="path"/>
                        </rewrite>

          
<action
 
type="replace"
 
regex="\/periodic-payments\/cross-border-credit-transfers"
 
value="\/payments"
 
fragment="path"/>
          </then>
                    </
rewriterule>
filter>

                </else>
            </
rewrite>
filter>

        </then>
        <else>
           
</filter>
 <filter 
source="$ctx:AM_KEY_TYPE" regex="PRODUCTION">
           
</else>
     <then>
       
</filter>
          
</then>
   <header name="To" value="https://<OBAM_HOST>:9443/open-banking/services/payments/paymentservice"/>
   
<else>
             
<filter source="$ctx:AM_KEY_TYPE" regex="PRODUCTION">
</then>
                
<then>
<else>
                    <header name="To" value="https://<OBAM_HOST>:9443/open-banking/services/payments/paymentservice"/>
                </
then>
else>
            </filter>
   
<else>
     </else>
    </filter>
    
<header name="To" value="https://<OBAM_HOST>:9443/open-banking/services/payments/paymentservice"/> </else> </filter> </else> </filter> <property name="ENDPOINT_ADDRESS" expression="get-property('To')"/> </sequence>
<property name="ENDPOINT_ADDRESS" expression="get-property('To')"/>
</sequence>


Configuring an API

In the WSO2 Open Banking Berlin v1.1, it is mandatory to configure APIs for:

  • Accounts API v1.1
  • Payments API v1.1

Given below is the general procedure to configure and publish an API. 

Tip

Anchor
WumUpdateForRequestValidationBG
WumUpdateForRequestValidationBG

Multiexcerpt
MultiExcerptNameConfiguringAPIs
  1. Sign in to the API Publisher ( https:// localhost:9443/publisher ) with the a user whose roles include Internal/publisher. Follow the steps given below:

  2. Click ADD NEW API > I have an existing API

  3. Select the Swagger definition from <WSO2_OB_APIM_HOME>/repository/resources/finance/apis and configure the properties according to the open-banking specification. Find more information from the table given .


    Click Start Creating.
  4. Click Next: Implement to navigate to the next level.
  5. Expand Managed API, and use the table to select the relevant Endpoint Type from the drop-down list.
  6. Check Select a message mediation policy to be executed in the message flow under Message Mediation Policies.
  7. Click Upload In Flow and select the corresponding In sequence file from the <WSO2_OB_APIM_HOME>/repository/resources/finance/apis/berlin-group.org/ directory.

  8. Click Next: Manage to navigate to the next level.

  9. Expand Throttling Settings. Under Subscription Tiers, check the option as Unlimited : Allows unlimited requests unless you want to limit the requests.
  10. Expand API Properties and add the following values as Additional properties:

    Property Name

    ob-spec

    Property Value

    berlin
  11. Click the + button to save the above values.

  12. Click Save & Publish.

Summarized information for configuring APIs

Specification

APIImplement tabManage tab
Endpoint typeEndpointEnable Message mediation

In flow


API property nameAPI property value
Berlin specificationAccountInfo API v1.1.0DynamicN/AMark as checked Select the respective In Sequence in the <WSO2_OB_APIM_HOME> /repository/resources/finance/apis/berlin-group.org/Accounts directoryob-spec berlin
Payments API v1.1.0DynamicN/AMark as checkedSelect the respective In Sequence in the wso2-obam-version/repository/resources/finance/apis/berlin-group.org/Payments directoryob-specberlin

Multiexcerpt include
MultiExcerptNameCreateNewAPIVersion
PageWithExcerptDeploying APIs for UK

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