d8tltanc commented on a change in pull request #9485:
URL: https://github.com/apache/kafka/pull/9485#discussion_r539782093
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File path: core/src/main/scala/kafka/security/authorizer/AclAuthorizer.scala
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@@ -304,6 +308,105 @@ class AclAuthorizer extends Authorizer with Logging {
if (zkClient != null) zkClient.close()
}
+ // TODO: 1. Discuss how to log audit message
+ // TODO: 2. Discuss if we need a trie to optimize（mainly for the O(n^2) loop
but I think
+ // in most of the cases it would be O(1) because denyDominatePrefixAllow
should be rare
+ override def authorizeByResourceType(requestContext:
AuthorizableRequestContext,
+ op: AclOperation,
+ resourceType: ResourceType):
AuthorizationResult = {
+ SecurityUtils.authorizeByResourceTypeCheckArgs(op, resourceType)
+
+ val principal = new KafkaPrincipal(
+ requestContext.principal().getPrincipalType,
+ requestContext.principal().getName).toString
+ val host = requestContext.clientAddress().getHostAddress
+ val action = new Action(op, new ResourcePattern(resourceType, "NONE",
PatternType.UNKNOWN), 0, true, true)
+
+ val denyLiterals = matchingResources(
+ principal, host, op, AclPermissionType.DENY, resourceType,
PatternType.LITERAL)
+
+ if (denyAll(denyLiterals)) {
+ logAuditMessage(requestContext, action, false)
+ return AuthorizationResult.DENIED
+ }
+
+ if (shouldAllowEveryoneIfNoAclIsFound) {
+ logAuditMessage(requestContext, action, true)
+ return AuthorizationResult.ALLOWED
+ }
+
+ val allowLiterals = matchingResources(
+ principal, host, op, AclPermissionType.ALLOW, resourceType,
PatternType.LITERAL)
+ val allowPrefixes = matchingResources(
+ principal, host, op, AclPermissionType.ALLOW, resourceType,
PatternType.PREFIXED)
+ val denyPrefixes = matchingResources(
+ principal, host, op, AclPermissionType.DENY, resourceType,
PatternType.PREFIXED)
+
+ if (allowAny(allowLiterals, allowPrefixes, denyLiterals, denyPrefixes)) {
+ logAuditMessage(requestContext, action, true)
+ return AuthorizationResult.ALLOWED
+ }
+
+ logAuditMessage(requestContext, action, false)
+ AuthorizationResult.DENIED
+ }
+
+ def matchingResources(principal: String, host: String, op: AclOperation,
permission: AclPermissionType,
+ resourceType: ResourceType, patternType: PatternType):
List[mutable.HashSet[String]] = {
Review comment:
Because we won't reconstruct a new large set containing all the matching
resources. We are constructing a List of ~ 3 * 3 * 3 elements, which refers to
existing HashSets maintaining by `updateCache`.
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