Philip Zampino created KNOX-3279:
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Summary: REST Catalog dispatch implementation for including
configurable metadata as outbound request headers
Key: KNOX-3279
URL: https://issues.apache.org/jira/browse/KNOX-3279
Project: Apache Knox
Issue Type: Improvement
Components: Server
Reporter: Philip Zampino
Assignee: Philip Zampino
For Iceberg REST Catalog proxying, Knox should support the ability to convey a
configurable set of token metadata elements associated with the client
credentials from the inbound request as headers in the outbound (dispatch)
request.
A custom dispatch for the ICEBERG-REST service should be implemented to provide
this support.
Proposed topology contents (example):
{code:java}
<service>
<role>ICEBERG-REST</role>
<param>
<name>token-metadata-headers</name>
<value>email,category</value>
</param>
</service> {code}
If the configured metadata items don't exist for a given client_id, then no
headers for those items should be conveyed in the outbound request (i.e., they
should be ignored).
It's not clear whether the standard {{userName}} metadata item should be
included by default.
The resulting header names can be of the form {{X-Knox-Meta-<ITEM_NAME>}} where
{{<ITEM_NAME>}} is the token metadata item name.
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