[jira] [Created] (KNOX-1184) [Service Discovery] Atlas endpoint url is not updated properly in the generated topology

[J.Andreina (JIRA)]

J.Andreina created KNOX-1184:
--------------------------------

             Summary: [Service Discovery] Atlas endpoint url is not updated 
properly in the generated topology
                 Key: KNOX-1184
                 URL: https://issues.apache.org/jira/browse/KNOX-1184
             Project: Apache Knox
          Issue Type: Bug
    Affects Versions: 0.14.0
         Environment: knox proxy and service discovery enabled
            Reporter: J.Andreina
             Fix For: 1.1.0


Service discovery:

Verified knox proxy feature through the generated topology file from service 
discovery feature

*Expectation:* 

*=========*
Generated topology file should have only the active atlas endpoint url , as 
HaProvider for atlas is not yet supported
when we access atlas through knox proxy, should'nt expose the atlas ip and port 
information.

{color:#FF0000}*Actual:*{color}

{color:#FF0000}*=====*{color}
Generated topology has both passive and active url for "ATLAS" service and 
passive url for "ATLAS-API" service.
Hence accessing atlas through knox proxy redirects me to the atlas active 
endpoint url, hence knox proxy fails. 
Explained the failure case in scenario 1 below


Environment:
============

Atlas has 2 host

host1 - acive_host
host2 - passive_host


{color:red}Scenario 1:
==========={color}

Generated topology using service discovery feature
{noformat}
<service>
 <role>ATLAS</role>
 <url>http://{color:#FF0000}host2{color}:21000</url>
 <url>http://host1:21000</url>
 </service>

<service>
 <role>ATLAS-API</role>
 <url>http://{color:#FF0000}host2{color}:21000</url>
 </service>
{noformat}

Here accessing the atlas through knox proxy redirects me to active atlas host1 
url

{color:#d04437}accessing url : https://<gateway-host>:8443/gateway/ui/atlas
redirected url : http:/host1:21000/login.jsp{color}


{color:#14892c}Scenario 2:
=============={color}
when i manually modified the atlas endpoint to only active url in generated 
topology file then the knox proxy works fine
{noformat}
</gateway>
 <service>
 <role>ATLAS</role>
 <url>http://host1:21000</url>
 </service>

<service>
 <role>ATLAS-API</role>
 <url>http://host1:21000</url>
 </service>
 {noformat}

{color:#14892c}accessing url : https://gateway-host:8443/gateway/ui/atlas
redirected url: https://gateway-host:8443/gateway/ui/atlas/login.jsp{color}



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