writing to elastic isnt working

Hi, i would like to send my pino logs to elastic, we are using elastic 6 version with latest version of pino and pino-elastic and when i config the below for pino :

let pino = require('pino'),
    pinoElastic = require('pino-elasticsearch');

const streamToElastic = pinoElastic({
    index: `log-test-%{DATE}`,
    type: 'info',
    consistency: 'one',
    node: 'http://myuser:mypass@localhost:9200',
    'trace-level': 'info',
    'es-version': 6,
    'bulk-size': 1,
    ecs: true
});

and then

const logger = pino(pinoOptions, streamToElastic);
logger.info('test');

the app is running ok, but no logs is printed to console and no logs sent to elastic with no errors at all, am i missing something?

[JoHuang]

I found if I write more logs, it sends some of the logs. So I think it’s might be cause of the flushBytes.

If I set flushBytes to 10, all logs appears.

This might be an issue that the last few logs can not be flushed before node.js app terminated.

[delvedor]

If you run the main process and pipe this transport, it works automatically, as the stream from the main process and the transport ends.

node example.js | ./cli.js

If you pass this library directly to the pino options, and then kill the process, there is no guarantee that all the logs will be sent, as the process will be destroyed. As I was saying the next version will support a flush interval. We can also think about a force flush method.