Well maybe. Sounds like what you are sort of asking for is this.
https://issues.apache.org/jira/browse/KNOX-618
However if I'm understanding you correctly what you probably want is one of two
other things. I'm guessing you want #1.
(1) <rewrite template="{$frontend[url]}/node/logs/{**}"/>
This will result in something like
https://my-knox-host:8443/gateway/sandbox/node/logs/some-path
(2) <rewrite template="{$serviceUrl[NODEUI]}/api/{path=**}?{**}"/>
This will result in something like
http://my-node-ui-host:8080/api/some-path?some-query
The value of $serviceUrl[NODEUI] is the value of the <url> element for the
<service> with <role>NODEUI</role>.
In addition, the $frontend function supports addr, scheme, host, port, and path
in addition to url.
$frontend[addr] == my-knox-host:8443
$frontend[scheme] == https
$frontend[host] == my-knox-host
$frontend[port] = 8443
$frontend[path] = /gateway/sandbox
From: Jeffrey Rodriguez <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Date: Tuesday, March 29, 2016 at 5:09 PM
To: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Subject: Any function that we can use in a rewrite rule which uses the host
header info from service?
Sorry sent to wrong list before.
Here is my question.
Do we have a Knox rewrite function that we can use in a "rewrite rule" that
uses the host header info from service?
I would like to rewrite the service output.
For example if I have the following rule which as a request into a yarn name
manager web UI has:
<rule dir="OUT" name="NODEUI/logfiles" pattern="/logs/{**}">
<rewrite template="{$servicehost}/node/logs/{**}"/>
</rule>
Since the dispatcher has access to the Host request header, a $servicehost
function could capture this information so we can rewrite output to to the
correct Yarn namenode manager web host and port.
$servicehost is a variable which has information only valid to the transaction
(request/response).
Regards,
Jeff Rodriguez
