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https://issues.apache.org/jira/browse/SENTRY-27?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gregory Chanan updated SENTRY-27:
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Attachment: SENTRY-27v2.patch
> Refactor to be able to support different provider backends (e.g. db vs file)
> ----------------------------------------------------------------------------
>
> Key: SENTRY-27
> URL: https://issues.apache.org/jira/browse/SENTRY-27
> Project: Sentry
> Issue Type: Sub-task
> Affects Versions: 1.2.0
> Reporter: Gregory Chanan
> Assignee: Gregory Chanan
> Fix For: 1.3.0
>
> Attachments: SENTRY-27v2.patch
>
>
> see this review request: https://reviews.apache.org/r/14344/
> Here's the part that is relevant to this JIRA (note: this is just refactoring
> to be able to support other backends, this is not support for other backends).
> The issue right now is the sentry-provider-file and sentry-provider-hive have
> things that are both backend-specific (e.g. PolicyFileConstants) and
> backend-agnostic (e.g. HadoopMappingService). Let's take an specific use
> case: we want to use the HadoopGroupResourceAuthorizationProvider via a
> database-backend. If today I specify the AuthorizationProvider to be say
> "org.apache.sentry.provider.hive.HadoopGroupResourceAuthorizationProvider" it
> will automatically be file-backed because it automatically instantiates a
> SimpleHivePolicyEngine which in turn uses the file.SimplePolicyParser. So,
> we should separate out the specification of the AuthorizationProvider and the
> PolicyEngine. So I would specify the AuthorizationProvider to be
> "org.apache.sentry.provider.hive.HadoopGroupResourceAuthorizationProvider"
> and the PolicyEngine to be "org.apache.sentry.policyengine.db.DBPolicyEngine"
> (that example sort of sucks because it has db twice -- maybe
> dbbackend.DBPolicyEngine). I think that is pretty similar to what you are
> saying -- just using "PolicyEngine" or "Policy" instead of "Permission
> Implementation".
> In my mind, there are 6 different files-types here, if we assume support for
> file/db backends and db/solr services:
> Policy-Engine Specific {common, db, solr}
> Non-Policy-Engine Specific {common, file, db}
> Now I don't have a huge preference for where this should all go, except that
> the policy-engine specific stuff for db and solr should be in their own
> package, to avoid pulling in a bunch of dependencies if they aren't needed.
> So this could be something like:
> sentry-policy/sentry-policy-db
> sentry-policy/sentry-policy-solr
> sentry-policy/sentry-policy-common
> sentry-provider/sentry-provider-backend-file
> sentry-provider/sentry-provider-backend-db
> sentry-provider/sentry-provider-common
> Or we could just throw all the "common" stuff into core.
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