MongoDB Stitch webhook for IoT blog

webhook.js

exports = function(payload,response) {
  
  const mongodb = context.services.get("mongodb-atlas");
  const sensordata = mongodb.db("iotdb").collection("sensordata");
  
  var body = {};
  if (payload.body) {
    
    try{
      
    const document = EJSON.parse(payload.body.text());
    //sample document:{ "device" : "TempSensor1", "sample_date" : "2018-09-03", "value" : "72.5", "time" : "1536011844" }
    var sample={val:Number(document.value), time: Number(document.time) };
    var day=new Date(document.sample_date);
    
    sensordata.updateOne({"device":document.device,nsamples:{$lt:200},day:day},
                 {"$push":{samples:sample},
                  "$min":{first:sample.time},
                  "$max":{last:sample.time},
                  "$inc":{nsamples:Number(1)}},
                  {upsert:true}
              
                 ).then(result => {
    response.setStatusCode(201);
  });
    }
    catch(err) {
      console.log(err);
      response.setStatusCode(500);
    }
  
  }

};

Thank you.

I ran the code and I got the following error:

`> ran on Tue Nov 10 2020 15:38:49 GMT+0100 (West Africa Standard Time)

took 376.846231ms
error:
uncaught promise rejection: multiple write errors: [{write errors: [{cannot compare to undefined}]}, {}]`

Please, how can I resolve this?
Thank you.

This code is to be run inside a MongoDB Atlas Function (former known as MongoDB Stitch). Were you trying to run this on its own?

This code is to be run inside a MongoDB Atlas Function (former known as MongoDB Stitch). Were you trying to run this on its own?

No! I ran it inside a MongoDB Atlas Function. Although the challenge I have is that, I cannot see my data inside my collection ('sensordata'). Because I followed all instructions as directed. Is there anything else I'm supposed to do for documents to be inserted into my collection?

My sensor is capturing data and I could see it using MQTT Explorer but can't see them in my database.

I will appreciate your help. Thank you.

This code is to be run inside a MongoDB Atlas Function (former known as MongoDB Stitch). Were you trying to run this on its own?

No! I ran it inside a MongoDB Atlas Function. Although the challenge I have is that, I cannot see my data inside my collection ('sensordata'). Because I followed all instructions as directed. Is there anything else I'm supposed to do for documents to be inserted into my collection?

My sensor is capturing data and I could see it using MQTT Explorer but can't see them in my database.

I will appreciate your help. Thank you.

Although, I am new to this field but I believe in learning by doing. So far so good I think I am catching up. Thank you.