jhutchison commented on a change in pull request #6493: URL: https://github.com/apache/geode/pull/6493#discussion_r635363444
########## File path: geode-apis-compatible-with-redis/src/main/java/org/apache/geode/redis/internal/pubsub/Subscriptions.java ########## @@ -67,6 +67,34 @@ boolean exists(Object channelOrPattern, Client client) { .collect(Collectors.toList()); } + public List<byte[]> findChannelNames() { + + return findChannels() + .stream() + .map(subscription -> (ChannelSubscription) subscription) + .map(ChannelSubscription::getSubscriptionName) + .distinct() + .collect(Collectors.toList()); + } + + public List<byte[]> findChannelNames(byte[] pattern) { + GlobPattern globPattern = new GlobPattern(new String(pattern)); + + return findChannels() + .stream() + .map(subscription -> (ChannelSubscription) subscription) + .filter(subscription -> globPattern.matches(new String(subscription.getSubscriptionName()))) + .map(ChannelSubscription::getSubscriptionName) + .distinct() + .collect(Collectors.toList()); + } + + private List<Subscription> findChannels() { + return subscriptions.stream() + .filter(subscription -> subscription instanceof ChannelSubscription) + .collect(Collectors.toList()); Review comment: Ahh-- I do see that this allows be to not have to cast it in the calling method though... I take it back, I like it better returning the channelSubscription... -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org