cmccabe commented on a change in pull request #9032:
URL: https://github.com/apache/kafka/pull/9032#discussion_r468874664
##########
File path:
clients/src/main/java/org/apache/kafka/clients/admin/KafkaAdminClient.java
##########
@@ -4071,6 +4081,168 @@ void handleFailure(Throwable throwable) {
return new
AlterClientQuotasResult(Collections.unmodifiableMap(futures));
}
+ @Override
+ public DescribeUserScramCredentialsResult
describeUserScramCredentials(List<String> users,
DescribeUserScramCredentialsOptions options) {
+ final KafkaFutureImpl<Map<String, UserScramCredentialsDescription>>
future = new KafkaFutureImpl<>();
+ final long now = time.milliseconds();
+ Call call = new Call("describeUserScramCredentials",
calcDeadlineMs(now, options.timeoutMs()),
+ new ControllerNodeProvider()) {
+ @Override
+ public DescribeUserScramCredentialsRequest.Builder
createRequest(int timeoutMs) {
+ return new DescribeUserScramCredentialsRequest.Builder(
+ new
DescribeUserScramCredentialsRequestData().setUsers(users.stream().map(user ->
+ new
DescribeUserScramCredentialsRequestData.UserName().setName(user)).collect(Collectors.toList())));
+ }
+
+ @Override
+ public void handleResponse(AbstractResponse abstractResponse) {
+ DescribeUserScramCredentialsResponse response =
(DescribeUserScramCredentialsResponse) abstractResponse;
+ Errors error = Errors.forCode(response.data().error());
+ switch (error) {
+ case NONE:
+ DescribeUserScramCredentialsResponseData data =
response.data();
+
future.complete(data.userScramCredentials().stream().collect(Collectors.toMap(
+
DescribeUserScramCredentialsResponseData.UserScramCredential::name,
+ userScramCredential -> {
+ List<ScramCredentialInfo> scramCredentialInfos
= userScramCredential.credentialInfos().stream().map(
+ credentialInfo -> new
ScramCredentialInfo(ScramMechanism.from(credentialInfo.mechanism()),
credentialInfo.iterations()))
+ .collect(Collectors.toList());
+ return new
UserScramCredentialsDescription(userScramCredential.name(),
scramCredentialInfos);
+ })));
+ break;
+ case NOT_CONTROLLER:
+ handleNotControllerError(error);
+ break;
+ default:
+ future.completeExceptionally(new ApiError(error,
response.data().errorMessage()).exception());
+ break;
+ }
+ }
+
+ @Override
+ void handleFailure(Throwable throwable) {
+ future.completeExceptionally(throwable);
+ }
+ };
+ runnable.call(call, now);
+ return new DescribeUserScramCredentialsResult(future);
+ }
+
+ @Override
+ public AlterUserScramCredentialsResult
alterUserScramCredentials(List<UserScramCredentialAlteration> alterations,
+
AlterUserScramCredentialsOptions options) {
+ final long now = time.milliseconds();
+ final Map<String, KafkaFutureImpl<Void>> futures = new HashMap<>();
+ for (UserScramCredentialAlteration alteration: alterations) {
+ futures.put(alteration.getUser(), new KafkaFutureImpl<>());
+ }
+ final Map<String, Exception> userIllegalAlterationExceptions = new
HashMap<>();
+ // We need to keep track of users with deletions of an unknown SCRAM
mechanism
+ alterations.stream().filter(a -> a instanceof
UserScramCredentialDeletion).forEach(alteration -> {
+ UserScramCredentialDeletion deletion =
(UserScramCredentialDeletion) alteration;
+ ScramMechanism mechanism = deletion.getMechanism();
+ if (mechanism == null || mechanism == ScramMechanism.UNKNOWN) {
+ userIllegalAlterationExceptions.put(deletion.getUser(), new
IllegalArgumentException("Unknown SCRAM mechanism"));
+ }
+ });
+ // Creating an upsertion may throw InvalidKeyException or
NoSuchAlgorithmException,
+ // so keep track of which users are affected by such a failure and
immediately fail all their alterations
+ final Map<String, Map<ScramMechanism,
AlterUserScramCredentialsRequestData.ScramCredentialUpsertion>> userInsertions
= new HashMap<>();
+ alterations.stream().filter(a -> a instanceof
UserScramCredentialUpsertion)
+ .filter(alteration ->
!userIllegalAlterationExceptions.containsKey(alteration.getUser()))
+ .forEach(alteration -> {
+ UserScramCredentialUpsertion upsertion =
(UserScramCredentialUpsertion) alteration;
+ String user = upsertion.getUser();
+ try {
+ ScramMechanism mechanism =
upsertion.getInfo().getMechanism();
+ if (mechanism == null || mechanism ==
ScramMechanism.UNKNOWN)
+ throw new IllegalArgumentException("Unknown SCRAM
mechanism");
+ userInsertions.putIfAbsent(user, new HashMap<>());
+ userInsertions.get(user).put(mechanism,
getScramCredentialUpsertion(upsertion));
+ } catch (Exception e) {
+ // we might overwrite aa exception from a previous
upsertion, but we don't really care
+ // since we just needs to mark this user as having at
least one illegal alteration
+ // and make an exception instance available for
completing the corresponding future exceptionally
+ userIllegalAlterationExceptions.put(user, e);
Review comment:
The pattern in Kafka has always been to have very specific error codes
and exceptions. Unfortunately INVALID_REQUEST is documented like this:
```
"This most likely occurs because of a request being malformed by the " +
"client library or the message was sent to an incompatible broker. See the
broker logs " +
"for more details.",
```
So we probably need a new error code here
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