log4js-elasticsearch-appender/index.js

Elasticsearch appender for log4js library. This appender pushes logs to Elasticsearch and can be visualized in Kibana.

const { Client } = require('@elastic/elasticsearch')
let client;
let sendMessage = (config, loggingEvent) => {
    client.index({
        index: config.elasticIndexPattern,
        body: {
            log: loggingEvent
        }
    })
}

function configure(config) {
    return hangoutAppender(config);
}

function hangoutAppender(config) {
    client = new Client({ 
        node: config.elasticUrl,
        auth: {
            username: config.elasticUsername,
            password: config.elasticPassword
        }
    })
    const appender = (loggingEvent) => {
        sendMessage(config, loggingEvent);
    };
    return appender;
}

exports.configure = configure;