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From "Andrii Tkach" <>
Subject Review Request 27035: Slider View: Updating view params in UI breaks masked params
Date Wed, 22 Oct 2014 13:28:43 GMT

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Review request for Ambari, Andriy Babiichuk and Aleksandr Kovalenko.

Bugs: AMBARI-7893

Repository: ambari


I created a slider view in the Ambari-Admin UI. The view had one masked parameter ambari.server.password.
I entered "admin" and saw in the POST that the decoded value was uploaded:
  "ViewInstanceInfo": {
    "instance_name": "s2",
    "label": "s2",
    "visible": true,
    "icon_path": "",
    "icon64_path": "",
    "properties": {
      "ambari.server.url": "http://tdk-1:8080/api/c1/clusters/tdk",
      "ambari.server.username": "admin",
      "ambari.server.password": "admin",
      "view.kerberos.principal": "a",
      "view.kerberos.principal.keytab": "aa"
    "description": "s2"
After saved, I editing and changed another param (say view.kerberos.principal). This broke
the masked param. The reason is that the GET call to view parameters gives the encoded value.
So POST takes decoded values and GET provides encoded values. So the next time UI PUTs, the
encoded value is put resulting in original value corruption.
The API should either always provided encoded or decoded values, but not both.





Tested on cluster


Andrii Tkach

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