redis-smq
Version:
A simple high-performance Redis message queue for Node.js.
37 lines • 1.67 kB
JavaScript
import { async, CallbackEmptyReplyError, } from 'redis-smq-common';
import { redisKeys } from '../../../common/redis-keys/redis-keys.js';
import { _getQueueProperties } from '../../queue/_/_get-queue-properties.js';
import { EQueueDeliveryModel } from '../../queue/index.js';
import { ConsumerGroupsConsumerGroupsNotSupportedError, ConsumerGroupsInvalidGroupIdError, } from '../errors/index.js';
export function _saveConsumerGroup(redisClient, eventBus, queue, groupId, cb) {
const gid = redisKeys.validateRedisKey(groupId);
if (gid instanceof Error)
cb(new ConsumerGroupsInvalidGroupIdError());
else {
async.waterfall([
(cb) => _getQueueProperties(redisClient, queue, (err, properties) => {
if (err)
cb(err);
else if (!properties)
cb(new CallbackEmptyReplyError());
else if (properties.deliveryModel !== EQueueDeliveryModel.PUB_SUB)
cb(new ConsumerGroupsConsumerGroupsNotSupportedError());
else
cb();
}),
(cb) => {
const { keyQueueConsumerGroups } = redisKeys.getQueueKeys(queue, gid);
redisClient.sadd(keyQueueConsumerGroups, gid, (err, reply) => {
if (err)
cb(err);
else {
if (reply)
eventBus.emit('queue.consumerGroupCreated', queue, groupId);
cb(null, reply);
}
});
},
], cb);
}
}
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