text: import mongoose from "mongoose";
  
  let Schema = mongoose.Schema
  
  let nodeSchema = new Schema({
    'device_id': String,
    'session_id': String,
    'from_addr': String,
    'to_addr': String,
    'sent_bytes': Number,
    'session_duration': Number,
    'amount': Number,
    'timestamp': Number
  });
  
  export const refSession = mongoose.model('refsession', nodeSchema);
  