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M
m_Sheridan1-Visitor
1-Visitor
January 6, 2022
Question

Create missing Things via 404's

  • January 6, 2022
  • 2 replies
  • 1892 views

Hi,

 

Is it possible to create Things in response to 404's?

 

For example, a new machine turns on for the first time and begins sending data to

.../Thingworx/Things/exampleMachine/Services/exampleService

 

Normally if the Thing hasnt been created this just returns a 404 but is there a way to use the 404 as a trigger for creating the missing entity.

 

Any advice is appreciated.

 

2 replies

P
PaiChung22-Sapphire I
22-Sapphire I
January 6, 2022

First of all as a best practice we recommend either pre-creation of entities or at least a validation to establish that contact from a piece of equipment is valid and is truly an entity that should be created.

 

Not sure how much logic you can put into your new machine itself, but usually it would first send a registration call which then will update the necessary information in the platform as well as the machine as necessary before starting regular communication.

 

You can check the different logs and see if the error shows up in the logs, if not the ThingWorx logs, potentially the Tomcat logs, so you could scrub those periodically to then trigger the entity creation.

    M
    m_Sheridan1-VisitorAuthor
    1-Visitor
    January 6, 2022

    Hey PaiChung,

     

    I appreciate the best practices advice but unfortunately the solution I am looking for is to help with older machines and it wouldnt be practical to update their code as they are in the field.

     

    I did also check the thingworx logs but seen nothing... I will look into the tomcat logs.

     

    Thanks.

    Martin.

    P
    PaiChung22-Sapphire I
    22-Sapphire I
    January 6, 2022

    Would anything prevent you from having users pre-register equipment that they are going to connect or create it ahead of time?

      G
      GuruPrasad112-Amethyst
      12-Amethyst
      January 7, 2022

      As pai said you could take advantage of logs because am getting entity not found being logged in Application Logs.
      https://www.ptc.com/en/support/article/CS207699
      and you could query logs and create actions based on that

      GuruPrasad1_0-1641537477505.png

       

        P
        PaiChung22-Sapphire I
        22-Sapphire I
        January 7, 2022

        It sounds like this won't work because the actual 'link' doesn't exist, so the call never makes it into ThingWorx, it should however show up in the Tomcat logs somewhere I think.

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