prisme-flow/nodes/bridge/datagenerator/datagenerator.js

prisme platform flow engine

/**
 * Created by prisme.io on 09/06/2017.
 */

module.exports = function (RED) {
  'use strict'
  var dummyjson = require('dummy-json')

  function DataGeneratorNode (n) {
    RED.nodes.createNode(this, n)
    this.field = n.field || 'payload'
    this.template = n.template
    this.fieldType = n.fieldType || 'msg'
    this.syntax = n.syntax || 'text'
    var node = this
    node.on('input', function (msg) {
      if (msg.seed) { dummyjson.seed = msg.seed }
      try {
        var value = dummyjson.parse(node.template, {mockdata: msg})
        if (node.syntax === 'json') {
          try { value = JSON.parse(value) } catch (e) { node.error(RED._('datagen.errors.json-error')) }
        }
        if (node.fieldType === 'msg') {
          RED.util.setMessageProperty(msg, node.field, value)
        } else if (node.fieldType === 'flow') {
          node.context().flow.set(node.field, value)
        } else if (node.fieldType === 'global') {
          node.context().global.set(node.field, value)
        }
        node.send(msg)
      } catch (e) {
        node.error(e.message)
      }
    })
  }
  RED.nodes.registerType('data-generator', DataGeneratorNode)
  RED.library.register('datagenerator')
}