quantranhong1999 commented on code in PR #2028:
URL: https://github.com/apache/james-project/pull/2028#discussion_r1503585953
##########
event-bus/distributed/src/main/java/org/apache/james/events/KeyRegistrationBinder.java:
##########
@@ -19,36 +19,30 @@
package org.apache.james.events;
+import io.lettuce.core.api.reactive.RedisSetReactiveCommands;
import reactor.core.publisher.Mono;
-import reactor.rabbitmq.BindingSpecification;
-import reactor.rabbitmq.Sender;
-class RegistrationBinder {
- private final NamingStrategy namingStrategy;
- private final Sender sender;
- private final RegistrationQueueName registrationQueue;
+class KeyRegistrationBinder {
+ private final RedisSetReactiveCommands<String, String>
redisSetReactiveCommands;
+ private final RegistrationChannelName registrationChannel;
- RegistrationBinder(NamingStrategy namingStrategy, Sender sender,
RegistrationQueueName registrationQueue) {
- this.namingStrategy = namingStrategy;
- this.sender = sender;
- this.registrationQueue = registrationQueue;
+ KeyRegistrationBinder(RedisSetReactiveCommands<String, String>
redisSetReactiveCommands,
+ RegistrationChannelName registrationChannel) {
+ this.redisSetReactiveCommands = redisSetReactiveCommands;
+ this.registrationChannel = registrationChannel;
}
Mono<Void> bind(RegistrationKey key) {
- return sender.bind(bindingSpecification(key))
+ // Use Redis Set to store 1 registrationKey -> n channel(s) mapping in
Redis
+ RoutingKeyConverter.RoutingKey routingKey =
RoutingKeyConverter.RoutingKey.of(key);
+ return redisSetReactiveCommands.sadd(routingKey.asString(),
registrationChannel.asString())
.then();
}
Mono<Void> unbind(RegistrationKey key) {
- return sender.unbind(bindingSpecification(key))
- .then();
- }
-
- private BindingSpecification bindingSpecification(RegistrationKey key) {
+ // delete the registrationKey -> channel mapping in Redis
RoutingKeyConverter.RoutingKey routingKey =
RoutingKeyConverter.RoutingKey.of(key);
- return BindingSpecification.binding()
- .exchange(namingStrategy.exchange())
- .queue(registrationQueue.asString())
- .routingKey(routingKey.asString());
+ return redisSetReactiveCommands.srem(routingKey.asString(),
registrationChannel.asString())
Review Comment:
Good question. I do not know the answer yet. But I knew that we need to
carefully manage/clean up data in Redis.
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