[jira] [Created] (HBASE-21825) proxy support for cross-machine links in master/RS UI

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

Sergey Shelukhin created HBASE-21825:
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             Summary: proxy support for cross-machine links in master/RS UI
                 Key: HBASE-21825
                 URL: https://issues.apache.org/jira/browse/HBASE-21825
             Project: HBase
          Issue Type: Improvement
            Reporter: Sergey Shelukhin


Follow-up to HBASE-21824. MasterStatusServlet needs to pass the current request URL to the template. Other than having to explicitly specify the proxy URL format (what if there are several proxies?), the best way to approach this seems to be for the above (optionally, if enabled) to check if URL authority includes the current server name; if not, do a string search for the server name and port in the URL. If found, create a URL format string to be used for all the links to other masters and RSes.
E.g. if current URL is MASTERMACHINE:12355/master-status, nothing needs to be done.
If it's 127.0.0.1:12355/master-status, similarly there's nothing to replace.
If it's e.g. myproxy/foo/server/MASTERMACHINE/port/12355/master-status, RS link might be 
myproxy/foo/server/RSMACHINE/port/12356/rs-status.
It can be disabled by default to avoid false positives.



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