[jira] [Created] (AMBARI-24351) Logic and declaration used to determine if SSO is enabled for a service needs to be able to handle more than a boolean property

["Sandor Molnar (JIRA)" <ji...@apache.org>]

Sandor Molnar created AMBARI-24351:
--------------------------------------

             Summary: Logic and declaration used to determine if SSO is enabled for a service needs to be able to handle more than a boolean property
                 Key: AMBARI-24351
                 URL: https://issues.apache.org/jira/browse/AMBARI-24351
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
    Affects Versions: 2.7.0
            Reporter: Sandor Molnar
            Assignee: Sandor Molnar
             Fix For: 2.7.1


Logic and declaration used to determine if SSO is enabled for a service needs to be able to handle more than a boolean property.

The current way Ambari determines whether SSO is enabled for a service or not is by getting the value of the property indicated in {{sso/enabledConfiguration}} property in the service's metadata:
{code:java|title=Example}
      <sso>
        <supported>true</supported>
        <enabledConfiguration>service-properties/sso.knox.enabled</enabledConfiguration>
      </sso>
{code}
Using the above example, the {{service-properties/sso.knox.enabled}} is checked to see if its value is "true" or "false".

This method works for a few services, but other services require more elaborate checks. For example Oozie relies on the value of {{oozie-site/oozie.authentication.type}}. If the value is "org.apache.hadoop.security.authentication.server.JWTRedirectAuthenticationHandler", then SSO is enabled; otherwise it is not. This is different that just a Boolean value.

*Solution*

To support a more robust method to determine whether SSO is enabled or not, a new attribute should be added - {{ssoEnabledTest}}. The existing attribute, {{enabledConfiguration}}, should be available for backward compatibility - but converted on the backend.

The {{ssoEnabledTest}} attribute is to contain a JSON document that can be _compiled_ into a {{org.apache.commons.collections.Predicate}} (ideally using {{org.apache.ambari.server.collections.PredicateUtils#fromJSON}}). For example
{code:java}
      <sso>
        <supported>true</supported>
        <ssoEnabledTest>
          {
            "equals": [
              "service-properties/sso.knox.enabled",
              "true"
            ]
          }
      </sso>
{code}
{code:java}
      <sso>
        <supported>true</supported>
        <ssoEnabledTest>
          {
            "equals": [
              "oozie-site/oozie.authentication.type",
              "org.apache.hadoop.security.authentication.server.JWTRedirectAuthenticationHandler"
            ]
          }
        </ssoEnabledTest>
      </sso>{code}



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