Property of type object not serialized properly above v9.0.1

Hi,

I’m having problems with serialization inside my Azure function project. This is a default Azure Function project inside VS2017 which comes with Newtonsoft.Json 9.0.1.

I’m working with a queue triggered function but this itself is not relevant for the problem.

public static void Run([QueueTrigger("queue")] Notification message, TraceWriter log)
{
    log.Info($"{JsonConvert.SerializeObject(message)}");
}

Notification type

public class Notification
{
    public string Target { get; set; }
    public Guid Uid { get; set; }
    public string Topic { get; set; }
    public ServiceTypes ServiceType { get; set; }
    public string HubSecret { get; set; }
    public DateTime Created { get; set; }
    public DateTime? FirstSentAt { get; set; }
    public IEnumerable<NotificationItem> Payload { get; set; }
}

public class NotificationItem
{
    public string Type { get; set; }
    public object Data { get; set; }
}

Source JSON

When function is triggered by a new item from the queue the JSON is properly deserialized into Notification object

Here’s the JSON from the queue:

{
  "Target": "https://test.com",
  "Uid": "00000000-0000-0000-0000-000000000000",
  "Topic": "action.moved",
  "ServiceType": "Inbox",
  "CompanyId": "00000000-0000-0000-0000-000000000000",
  "Created": "2018-06-17T20:24:16.5534423Z",
  "FirstSentAt": null,
  "Payload": [
    {
      "Type": "actionsubject",
      "Data": {
        "Skills": [
          
        ],
        "Tags": [
          "tag1",
          "tag2"
        ],
        "Emails": [
          {
            "Id": 111111,
            "Value": "[e-mail]",
            "Type": "email"
          }
        ],
        "PhoneNumbers": [
          {
            "Id": 222222,
            "Value": "5555555555",
            "Type": "phone"
          }
        ],
        "SocialNetworks": [
          {
            "Id": 3333333,
            "Value": "www.facebook.com",
            "Type": "other"
          }
        ],
        "PossibleDuplicates": true,
        "Id": 123456,
        "FirstName": "John",
        "LastName": "Doe",
        "Name": "John Doe",
        "Title": null,
        "Avatar": null,
        "Company": null,
        "Created": "2018-04-04T22:20:27.307",
        "Uid": "00000000-0000-0000-0000-000000000000"
      }
    }
  ]
}

After serialization inside the function:

{
  "Target": "https://test.com",
  "Uid": "00000000-0000-0000-0000-000000000000",
  "Topic": "action.moved",
  "ServiceType": 3,
  "HubSecret": null,
  "CompanyId": "00000000-0000-0000-0000-000000000000",
  "Created": "2018-06-17T20:24:16.5534423Z",
  "FirstSentAt": null,
  "Payload": [
    {
      "Type": "actionsubject",
      "Data": {
        "Skills": [
          
        ],
        "Tags": [
          [
            
          ],
          [
            
          ]
        ],
        "Emails": [
          {
            "Id": [
              
            ],
            "Value": [
              
            ],
            "Type": [
              
            ]
          }
        ],
        "PhoneNumbers": [
          {
            "Id": [
              
            ],
            "Value": [
              
            ],
            "Type": [
              
            ]
          }
        ],
        "SocialNetworks": [
          {
            "Id": [
              
            ],
            "Value": [
              
            ],
            "Type": [
              
            ]
          }
        ],
        "PossibleDuplicates": [
          
        ],
        "Id": [
          
        ],
        "FirstName": [
          
        ],
        "LastName": [
          
        ],
        "Name": [
          
        ],
        "Title": [
          
        ],
        "Avatar": [
          
        ],
        "Company": [
          
        ],
        "Created": [
          
        ],
        "Uid": [
          
        ]
      }
    }
  ],
  "Subscription": null
}

As you can see, all the NotificationItem.Data properties of the Payload array are being serialized as empty arrays. This happens in versions of Newtonsof.Json higher than 9.0.1. 9.0.1 serializes the object as expected.

[JamesNK]

Not yet

[nixa333]

@tmoon8730 I wrote in my original post that this occurs whenever using a Newtonsoft version higher than the project default (9.0.1 for Function v1, 10.0.3 for Function v2). If you find out why this happens, please do notify us. I Gues @JamesNK accepts PR’s.