How to set tenant in header in mediator using WSO2 API Manager

Question

I have an API that requires a tenant as a header.

If I create a custom sequence:

<sequence name="WSO2AM--Ext--In"> <header name="X-Tenant-Id" scope="transport" action="set" expression="???????????????????" /> </sequence> 

Is there an expression that I can use to achieve this? Or should I resort to creating a media intermediary for the API?

PS: Looking at the WSO2 source code ( CarbonTenantInfoConfigurator.java ), I found this snippet that may be useful as a hint:

 PrivilegedCarbonContext cc = PrivilegedCarbonContext.getThreadLocalCarbonContext(); String tenantDomain = cc.getTenantDomain(); int tenantId = cc.getTenantId(); messageContext.setProperty("tenant.info.domain", tenantDomain); messageContext.setProperty("tenant.info.id", tenantId); 

But I do not know how to access these properties in a user sequence, if possible.

Answer 1

After checking the output of ApiManager debugging, I noticed that user sequences are executed immediately after the handlers. Fortunately, the OAuthAuthenticator class (used by APIAuthenticationHandler) sets some convenient properties, such as END_USER_NAME and APPLICATION_NAME .

END_USER_NAME contains the name and tenant of the caller ( [e-mail] ).

This custom sequence worked for me:

 <sequence name="add_service_header" trace="enable" statistics="enable" xmlns="http://ws.apache.org/ns/synapse"> <log/> <property name="tenant" expression="fn:substring-after(get-property('END_USER_NAME'), '@')" /> <header name="X-Tenant" scope="transport" expression="get-property('tenant')"/> <header name="X-AppName" scope="transport" expression="get-property('APPLICATION_NAME')"/> </sequence> 

I could not find the documentation for a property other than the source code, and this other question

Answer 2

As shown in the code, they are configured for the MessageContext synapse. You can get these properties using the following expressions.

Get property ('tenant.info.domain')

Get property ('tenant.info.id')

thanks

Tishan