@financialforcedev/orizuru-transport-kafka
Version:
Kafka transport layer for the orizuru package
69 lines (54 loc) • 2.28 kB
JavaScript
/**
* Copyright (c) 2017, FinancialForce.com, inc
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the FinancialForce.com, inc nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**/
;
const
Kafka = require('no-kafka'),
producers = new Map(),
getProducer = (config) => {
let
producerPromise = producers.get(config);
if (!producerPromise) {
const producer = new Kafka.Producer(config);
producerPromise = producer.init().then(() => producer);
producers.set(config, producerPromise);
}
return producerPromise;
},
send = (eventName, buffer) => (producer) => {
return producer.send({
topic: eventName,
message: {
value: buffer
}
});
};
module.exports = {
publish: ({ eventName, buffer, config }) => {
return Promise.resolve(config)
.then(getProducer)
.then(send(eventName, buffer));
}
};