More robust and consistent allowAll indicesAccessControl (#79415) #79427
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This PR ensures that AllowAllIndicesAccessControl is able to behave well for all superclass's methods. Previously it throws NPE when it is asked about Fls/Dls usage because it has a null index permissions map as a placeholder. In this PR, we also get rid of the null and also mandate non-null in the constructor of IndicesAccessControl. In additional, whether a role has DLS/FLS and whether an AllowAllIndicesAccessControl should be used for short circuit is determined more consistently. In both places, whether a group has total access to all indices is used as part of the criteria. Previously it is possible that the role reports it has DLS/FLS while the cindicesAccessControl does not have it. This could happen when one of the group has DLS/FLS but another group has total access to all indices. In this case, the code now correctly reports no DLS/FLS in both places. Resolves: elastic#79361
ywangd
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This PR ensures that AllowAllIndicesAccessControl is able to behave well
for all superclass's methods. Previously it throws NPE when it is asked
about Fls/Dls usage because it has a null index permissions map as a
placeholder. In this PR, we also get rid of the null and also mandate
non-null in the constructor of IndicesAccessControl.
In additional, whether a role has DLS/FLS and whether an
AllowAllIndicesAccessControl should be used for short circuit is
determined more consistently. In both places, whether a group has total
access to all indices is used as part of the criteria. Previously it is
possible that the role reports it has DLS/FLS while the
cindicesAccessControl does not have it. This could happen when one of
the group has DLS/FLS but another group has total access to all indices.
In this case, the code now correctly reports no DLS/FLS in both places.
Resolves: #79361
Backport: #79415