@incdevco/framework/event-log/index.js

node.js lambda framework

var AWS = require('aws-sdk');

function EventLog(config) {
  'use strict';
  
  config = config || {};
  
  this.deliveryStreamName = config.name || 'event-log';
  this.firehose = new AWS.Firehose();
  
}

EventLog.prototype.emit = function (name, data) {
  'use strict';
  
  return this.firehose.putRecord({
    DeliveryStreamName: this.deliveryStreamName,
    Record: this.eventToFirehoseRecord(name, data)
  }).promise();
  
};

EventLog.prototype.emitBatch = function (events) {
  'use strict';
  
  var params = {
    DeliveryStreamName: this.deliveryStreamName,
    Records: []
  };
  
  var self = this;
  
  events.forEach(function (event) {
    
    params.Records.push(self.eventToFirehoseRecord(event.name, event.data));
    
  });
  
  return this.firehose.putRecordBatch(params).promise();
  
};

EventLog.prototype.eventToFirehoseRecord = function (name, data) {
  'use strict';
  
  return {
    Data: JSON.stringify({
      name: name,
      data: data
    })
  };
  
};

module.exports = EventLog;