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This guide demonstrates how to integrate an external WSO2 API Manager (APIM) with WSO2 G-Reg. For information on installing WSO2 API Manager features internally within WSO2 G-Reg, see Installing WSO2 API Manager Features.

Table of Contents
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WSO2 Governance Registry is a registry-repository for storing and managing metadata related to services and other artifacts. Services (SOAP or REST) in WSO2 G-Reg are implemented as configurable governance artifacts (RXT files), which you create using the G-Reg Publisher or its Management Console. Usually, in WSO2 APIM service publication is done using the APIM Publisher Web interface. Instead, you can integrate WSO2 APIM with WSO2 G-Reg, to directly publish APIs to APIM Publisher using the services deployed in the WSO2 Governance Registry.

This guide explains how to configure the two products to expose services in the G-Reg as APIs in the APIM.

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  1.  Log in to the G-Reg Management Console using the following URL and admin/admin credentials: https://10.100.5.72:9444/carbon
  2. Click Extensions. and then click Lifecycles.
  3. Click the corresponding View/Edit Link of the ServiceLifeCycle as shown below.
    edit the ServiceLifeCycle configuration

  4. Replace the <execution forEvent="Publish" class="org.wso2.carbon.governance.registry.extensions.executors.apistore.ApiStoreExecutor"> element in the configuration with a code block which defines an execution element in production state as shown in the example below. Add the API Manager credentials in it, so that it provides the API Manager's endpoint, username and password as executor parameters.

    Tip

    Alternatively you can do this change in the <GREG_HOME>/repository/resources/lifecycles/ServiceLifeCycle.xml file and then restart the G-Reg server.

    Code Block
    languagehtml/xml
    <execution forEvent="Publish" class="org.wso2.carbon.governance.registry.extensions.executors.apistore.ServiceToAPIExecutor">
   <parameter name="apim.endpoint" value="http://localhost:9763/"/>
   <parameter name="apim.username" value="admin"/>
   <parameter name="apim.password" value="admin"/>
   <parameter name="apim.env" value="dev"/>
   <parameter name="default.tier" value="Unlimited"/>
   <parameter name="throttlingTier" value="Unlimited,Unlimited,Unlimited,Unlimited,Unlimited"/>
</execution>
    Info

    If you need to publish a REST service  to WSO2 API Manager, replace the  <execution forEvent="Publish" class="org.wso2.carbon.governance.registry.extensions.executors.apistore.ApiStoreExecutor">  element in the  <GREG_HOME>/repository/resources/lifecycles/ServiceLifeCycle.xml  file with a code block which defines an  execution  element in  production  state as shown in the example below. Add the API Manager credentials in it, so that it provides the API Manager's endpoint, username and password as executor parameters.

    Code Block
    languagexml
    <execution forEvent="Publish" class="org.wso2.carbon.governance.registry.extensions.executors.apistore.RestServiceToAPIExecutor">
   <parameter name="apim.endpoint" value="http://localhost:9763/"/>
   <parameter name="apim.username" value="admin"/>
   <parameter name="apim.password" value="admin"/>
   <parameter name="apim.env" value="dev"/>
   <parameter name="default.tier" value="Unlimited"/>
   <parameter name="throttlingTier" value="Unlimited,Unlimited,Unlimited,Unlimited,Unlimited"/>
</execution>

  5. Click Save.

  6. Click Yes in the message which pops up.

    Image Modified

Creating the Service in WSO2 G-Reg

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  1. Log in to the G-Reg Publisher using the following URL and admin/admin credentials: https://10.100.5.72:9444/publisher

  2. Click the Add button of the SOAP Service box as shown below.

    add SOAP service

  3. Select Add a SOAP Service using a WSDL option as shown below.

    adding a SOAP service using a WSDL

  4. Click Continue.

  5. Enter the details of the service which you want to create as shown in the example below.

    add the WSDL

  6. Click Create. 

  7. Refresh the screen to view the new service you added as shown below.

    new SOAP service created

  8. Log in to the G-Reg Management Console using the following URL and admin/admin credentials: https://10.100.5.72:9444/carbon

  9. Click Main, and then click SOAP Services in the List menu.

    You view the created SOAP service. 

  10. Click on the corresponding Service Version link of the service as shown below.

    click Service Version of the new service

  11. Add the same values which you provided for the apim.endpoint parameter (e.g. http://localhost:9763/), and apim.env parameter (e.g. "dev") in the lifecycle executer in Configuring WSO2 G-Reg, for Environments and URL  as shown in the example below. 
    endpoint URL

  12. Click Save SOAP Service.

Publishing the Service in WSO2 G-Reg

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Viewing the API Published in WSO2 APIM

Once you log in to the WSO2 APIM Publisher using the following URL and admin/admin credentials: https://10.100.5.72:9443/publisher, you view the service you published is successfully created as an API in the API Publisher as shown below.

API published in WSO2 APIMImage Modified