[jira] [Created] (AMBARI-6231) Views: parameterization of view parameters

[Siddharth Wagle (JIRA)]

Siddharth Wagle created AMBARI-6231:
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             Summary: Views: parameterization of view parameters
                 Key: AMBARI-6231
                 URL: https://issues.apache.org/jira/browse/AMBARI-6231
             Project: Ambari
          Issue Type: Task
          Components: controller
    Affects Versions: 1.7.0
            Reporter: Siddharth Wagle
            Assignee: Siddharth Wagle
             Fix For: 1.7.0
         Attachments: AMBARI-5940.patch

In a lot of cases, folks will want to use viewContext.getUsername with their 
view instances parameters. Right now, we leave that logic + code to the view 
developer. We should support parametrization of view instance params to handle 
this, and provide username as the first supported param.

For example, say I have a parameter "view.path" : "/tmp/some/path"

In my view, I want to append username, so I have logic in my view code to get 
view.path and + viewContext.getUsername()

viewContext.getProperties().get("view.path") + "/" + viewContext.getUsername()

resulting in /tmp/some/path/horton

If views support parametrization, i could do this:

"view.path" : "/tmp/some/path/$
{username}

"

then all I need to do viewContext.getProperties().get("view.path");



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