mdedetrich commented on code in PR #11478:
URL: https://github.com/apache/kafka/pull/11478#discussion_r928617296
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core/src/main/scala/kafka/utils/CoreUtils.scala:
##########
@@ -252,16 +255,57 @@ object CoreUtils {
listenerListToEndPoints(listeners, securityProtocolMap, true)
}
+ def validateOneIsIpv4AndOtherIpv6(first: String, second: String): Boolean =
+ (inetAddressValidator.isValidInet4Address(first) &&
inetAddressValidator.isValidInet6Address(second)) ||
+ (inetAddressValidator.isValidInet6Address(first) &&
inetAddressValidator.isValidInet4Address(second))
+
+ def checkDuplicateListenerPorts(endpoints: Seq[EndPoint], listeners:
String): Unit = {
+ val distinctPorts = endpoints.map(_.port).distinct
+ require(distinctPorts.size == endpoints.map(_.port).size, s"Each listener
must have a different port, listeners: $listeners")
+ }
+
def listenerListToEndPoints(listeners: String, securityProtocolMap:
Map[ListenerName, SecurityProtocol], requireDistinctPorts: Boolean):
Seq[EndPoint] = {
def validate(endPoints: Seq[EndPoint]): Unit = {
- // filter port 0 for unit tests
- val portsExcludingZero = endPoints.map(_.port).filter(_ != 0)
val distinctListenerNames = endPoints.map(_.listenerName).distinct
-
require(distinctListenerNames.size == endPoints.size, s"Each listener
must have a different name, listeners: $listeners")
- if (requireDistinctPorts) {
- val distinctPorts = portsExcludingZero.distinct
- require(distinctPorts.size == portsExcludingZero.size, s"Each listener
must have a different port, listeners: $listeners")
+
+ val (duplicatePorts, nonDuplicatePorts) = endPoints.filter {
+ // filter port 0 for unit tests
+ ep => ep.port != 0
+ }.groupBy(_.port).partition {
+ case (_, endpoints) => endpoints.size > 1
+ }
+
+ val nonDuplicatePortsOnlyEndpoints = nonDuplicatePorts.flatMap { case
(_, eps) => eps }.toList
+
+ if (requireDistinctPorts)
+ checkDuplicateListenerPorts(nonDuplicatePortsOnlyEndpoints, listeners)
+
+ // Exception case, let's allow duplicate ports if one host is on IPv4
and the other one is on IPv6
+ val duplicatePortsPartitionedByValidIps = duplicatePorts.map {
+ case (port, eps) =>
+ (port, eps.partition(ep =>
+ ep.host != null && inetAddressValidator.isValid(ep.host)
+ ))
+ }
+
+ // Iterate through every grouping of duplicates by port to see if they
are valid
+ duplicatePortsPartitionedByValidIps.foreach {
+ case (port, (duplicatesWithIpHosts, duplicatesWithoutIpHosts)) =>
+ if (requireDistinctPorts)
+ checkDuplicateListenerPorts(duplicatesWithoutIpHosts, listeners)
Review Comment:
> Is that what we expected? I thought in this PR(KIP), we allow to use the
same port only when one is in ipv4, and the other one is in ipv6. But this case
also allow the 3rd set of same port listener. Is it correct?
No its not expected, I have to explicitly check for null hosts (didn't
realize they existed). Will work on this.
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