我正在尝试设置一个生产者，以使用 node-rdkafka 将消息发送到 IBM Cloud 中的事件流服务，但是我无法从服务器接收回"ready"事件。
我花了一天的时间试图弄清楚这一点，我相信这将归结为我对制作人的配置，但据我所知，我已经做对了。
我从 Ubuntu 19.04 运行它，使用 node-rdkafka 来创建生产者。我正在使用节点 10.15.2 运行它
感谢您提供的任何建议。
var Kafka = require('node-rdkafka');
var producer = new Kafka.Producer({
'debug' : 'all',
'metadata.broker.list': 'kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093',
'dr_cb': true, //delivery report callback
'security.protocol': 'sasl_ssl',
'ssl.ca.location': '/etc/ssl/certs/',
'sasl.mechanisms': 'PLAIN',
'sasl.username': '<credential username>',
'sasl.password': '<credential password>',
'retries': 10,
'retry.backoff.ms': 10000
});
var topicName = '<my-topic>';
//logging debug messages, if debug is enabled
producer.on('event.log', function(log) {
console.log(log);
});
//logging all errors
producer.on('event.error', function(err) {
console.error('Error from producer');
console.error(err);
});
//counter to stop this sample after maxMessages are sent
var counter = 0;
var maxMessages = 10;
producer.on('delivery-report', function(err, report) {
console.log('delivery-report: ' + JSON.stringify(report));
counter++;
});
//Wait for the ready event before producing
producer.on('ready', function(arg) {
console.log('producer ready.' + JSON.stringify(arg));
for (var i = 0; i < maxMessages; i++) {
var value = Buffer.from('value-' +i);
var key = "key-"+i;
// if partition is set to -1, librdkafka will use the default partitioner
var partition = -1;
var headers = [
{ header: "header value" }
]
producer.produce(topicName, partition, value, key, new Date(), "". headers);
}
//need to keep polling for a while to ensure the delivery reports are received
var pollLoop = setInterval(function() {
producer.poll();
if (counter === maxMessages) {
clearInterval(pollLoop);
producer.disconnect();
}
}, 1000);
});
producer.on('disconnected', function(arg) {
console.log('producer disconnected. ' + JSON.stringify(arg));
});
//starting the producer
producer.connect();
我在下面包含了一些日志摘录，从它看起来失败的地方。
{ severity: 7,
fac: 'BROKERFAIL',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: failed: err: Local: Broker handle destroyed: (errno: Operation now in progress)' }
{ severity: 7,
fac: 'STATE',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: Broker changed state CONNECT -> DOWN' }
{ severity: 7,
fac: 'BROADCAST',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: Broadcasting state change' }
{ severity: 7,
fac: 'BUFQ',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: Purging bufq with 0 buffers' }
{ severity: 7,
fac: 'BUFQ',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: Updating 0 buffers on connection reset' }
{ severity: 7,
fac: 'TERM',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: Received TERMINATE op in state DOWN: 1 refcnts, 0 toppar(s), 0 active toppar(s), 0 outbufs, 0 waitresps, 0 retrybufs' }
{ severity: 7,
fac: 'BROKERFAIL',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: failed: err: Local: Broker handle destroyed: (errno: Operation now in progress)' }
{ severity: 7,
fac: 'FAIL',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: Client is terminating' }
{ severity: 7,
fac: 'BUFQ',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: Purging bufq with 0 buffers' }
{ severity: 7,
fac: 'BUFQ',
message:
'[thrd:sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net]: sasl_ssl://kafka03-prod02.messagehub.services.eu-gb.bluemix.net:9093/bootstrap: Updating 0 buffers on connection reset' }
{ severity: 7,
fac: 'TERMINATE',
message:
'[thrd::0/internal]: :0/internal: Handle is terminating in state DOWN: 1 refcnts (0x7f6d1402e4b0), 0 toppar(s), 0 active toppar(s), 0 outbufs, 0 waitresps, 0 retrybufs: failed 0 request(s) in retry+outbuf' }
{ severity: 7,
fac: 'BROKERFAIL',
message:
'[thrd::0/internal]: :0/internal: failed: err: Local: Broker handle destroyed: (errno: Success)' }
{ severity: 7,
fac: 'BUFQ',
message:
'[thrd::0/internal]: :0/internal: Purging bufq with 0 buffers' }
{ severity: 7,
fac: 'BUFQ',
message:
'[thrd::0/internal]: :0/internal: Updating 0 buffers on connection reset' }
Process finished with exit code 0
客户端配置中似乎缺少ssl.ca.location属性。
这需要设置为CA在系统上的存储位置。
例如：
- 在 macOS 上：
/etc/ssl/cert.pem - 乌班图：
/etc/ssl/certs/ - 红帽：
/etc/pki/tls/cert.pem
如果您还没有看到它，Github.com 上有一个用于事件流的示例应用程序，它演示了如何使用 node-rdkafka。
您可以在以下代码片段中看到所有必需的配置：
var driver_options = {
//'debug': 'all',
'metadata.broker.list': opts.brokers,
'security.protocol': 'sasl_ssl',
'ssl.ca.location': opts.calocation,
'sasl.mechanisms': 'PLAIN',
'sasl.username': 'token',
'sasl.password': opts.api_key,
'broker.version.fallback': '0.10.0', // still needed with librdkafka 0.11.6 to avoid fallback to 0.9.0
'log.connection.close' : false
};