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https://issues.apache.org/jira/browse/RANGER-3903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ramachandran reassigned RANGER-3903:
------------------------------------
Assignee: Ramachandran
> Improvements in RangerPolicyDeltaUtil--> applyDeltas method
> -----------------------------------------------------------
>
> Key: RANGER-3903
> URL: https://issues.apache.org/jira/browse/RANGER-3903
> Project: Ranger
> Issue Type: Improvement
> Components: Ranger
> Affects Versions: 3.0.0
> Reporter: Ramachandran
> Assignee: Ramachandran
> Priority: Major
>
>
> {code:java}
> while (iter.hasNext()) {
> RangerPolicy policy = iter.next();
> if (policyId.equals(policy.getId()) &&
> (changeType == RangerPolicyDelta.CHANGE_TYPE_POLICY_DELETE || changeType ==
> RangerPolicyDelta.CHANGE_TYPE_POLICY_UPDATE)) {
> deletedPolicies.add(policy);
> iter.remove();
> }
> } switch(changeType) {
> case RangerPolicyDelta.CHANGE_TYPE_POLICY_CREATE:
> {
> if
> (CollectionUtils.isNotEmpty(deletedPolicies)) {
> LOG.warn("Unexpected: found existing
> policy for CHANGE_TYPE_POLICY_CREATE: " +
> Arrays.toString(deletedPolicies.toArray()));
> }
> break;
> }
> case RangerPolicyDelta.CHANGE_TYPE_POLICY_UPDATE:
> {
> if (CollectionUtils.isEmpty(deletedPolicies)
> || deletedPolicies.size() > 1) {
> LOG.warn("Unexpected: found no policy or
> multiple policies for CHANGE_TYPE_POLICY_UPDATE: " +
> Arrays.toString(deletedPolicies.toArray()));
> }
> break;
> }
> case RangerPolicyDelta.CHANGE_TYPE_POLICY_DELETE:
> {
> if (CollectionUtils.isEmpty(deletedPolicies)
> || deletedPolicies.size() > 1) {
> LOG.warn("Unexpected: found no policy or
> multiple policies for CHANGE_TYPE_POLICY_DELETE: " +
> Arrays.toString(deletedPolicies.toArray()));
> }
> break;
> }
> default:
> break;
> } {code}
> From the above code, we iterate delta policies and check if this policy
> exists in the existing policy, we add that to deletePolicies list.
> If a delta change type is created, we expect that it should not be in the
> existing old policy which should not have happened. So the below block code
> is not needed
> {code:java}
> case RangerPolicyDelta.CHANGE_TYPE_POLICY_CREATE: {
> if
> (CollectionUtils.isNotEmpty(deletedPolicies)) {
> LOG.warn("Unexpected: found existing
> policy for CHANGE_TYPE_POLICY_CREATE: " +
> Arrays.toString(deletedPolicies.toArray()));
> }
> break;
> }{code}
> Proposal :
> The same id can be for multiple policies here.?
> If policy Id is uniqiue and found a match, why are still we iterating here
> instead of adding a break
>
> {code:java}
> while (iter.hasNext()) {
> RangerPolicy policy = iter.next();
> if (policyId.equals(policy.getId()) && (changeType ==
> RangerPolicyDelta.CHANGE_TYPE_POLICY_DELETE || changeType ==
> RangerPolicyDelta.CHANGE_TYPE_POLICY_UPDATE)) {
> deletedPolicies.add(policy);
> iter.remove();
> }
> } {code}
>
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