@Override
public SubscribeHandle start(List<Subscriber> subscribers) {
CompositeSubscribeHandle handle = new CompositeSubscribeHandle();
for (Subscriber s : subscribers) {
List<Topic> topics = m_metaService.listTopicsByPattern(s.getTopicPattern());
if (topics == null || topics.isEmpty()) {
throw new IllegalArgumentException(
String.format("Can not find any topics matching pattern %s", s.getTopicPattern()));
}
log.info(
"Found topics({}) matching pattern({}), groupId={}.",
CollectionUtil.collect(
topics,
new Transformer() {
@Override
public Object transform(Object topic) {
return ((Topic) topic).getName();
}
}),
s.getTopicPattern(),
s.getGroupId());
for (Topic topic : topics) {
ConsumerContext context =
new ConsumerContext(
topic, s.getGroupId(), s.getConsumer(), s.getMessageClass(), s.getConsumerType());
// FIXME validate all, if fail in any validator, exit
if (validate(topic, context)) {
try {
String endpointType = m_metaService.findEndpointTypeByTopic(topic.getName());
ConsumerBootstrap consumerBootstrap =
m_consumerManager.findConsumerBootStrap(endpointType);
handle.addSubscribeHandle(consumerBootstrap.start(context));
} catch (RuntimeException e) {
log.error(
"Failed to start consumer for topic {}(consumer: groupId={}, sessionId={})",
topic.getName(),
context.getGroupId(),
context.getSessionId(),
e);
throw e;
}
}
}
}
return handle;
}
