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InterAppCall JsonSerializationException: type mismatch

Solved1.74K views27th April 2022InterApp protocols QActions
5
Andries Deklerck [SLC] [DevOps Member]492 21st April 2022 0 Comments

When receiving an InterAppCall, the deserializing fails with below exception.

Seems that the type of the list isn't matching.

System.Collections.Generic.List`1
[
[Skyline.IAC.Endpoints.Resources.EndpointHealth, Unified Streaming Unified Origin Monitoring.1.0.1.4_B10.QAction.1, Version=1.0.0.7, Culture=neutral, PublicKeyToken=null] ],
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not compatible with 'System.Collections.Generic.List`1
[
[Skyline.IAC.Endpoints.Resources.EndpointHealth, British Telecom Unified Streaming Single Channel Failover.1.0.0.1_B5.QAction.1, Version=1.0.0.11, Culture=neutral, PublicKeyToken=null] ],
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

The received interapp rawdata contains the extended type info

"$type": "System.Collections.Generic.List`1[[Skyline.IAC.Endpoints.Resources.EndpointHealth, Unified Streaming Unified Origin Monitoring.1.0.1.4_B10.QAction.1, Version=1.0.0.7, Culture=neutral, PublicKeyToken=null]], ",

Do note that I'm using class library as nuget packages (both protocols use same version).

Does anyone has an idea how to get this working?

Andries Deklerck [SLC] [DevOps Member] Selected answer as best 27th April 2022

2 Answers

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3
Jens Vandewalle [SLC] [DevOps Enabler]9.44K Posted 25th April 2022 3 Comments

Hi Andries,

I had something similar and was able to get it working by making my own serializer and added List<MyClass> as possible Type.

Michiel Oda [SLC] [DevOps Enabler] Posted new comment 27th April 2022
Thijs Vanovenacker [SLC] [DevOps Advocate] commented 27th April 2022

I think this could work indeed!

Andries Deklerck [SLC] [DevOps Member] commented 27th April 2022

Thanks Jens

For my solution I added typeof(List) to the List of knownTypes.
Then I’m not using my own serializer so the code will be like this:

List knownTypes = new List
{
typeof(ReturnCachedEndpointHealth),
typeof(List),
};
IInterAppCall receivedCall = InterAppCallFactory.CreateFromRaw(rawData, knownTypes);

Michiel Oda [SLC] [DevOps Enabler] commented 27th April 2022

This is fine as internally InterAppCalls will create a default serializer based on the known types like how Jens does it. So either way is ok.

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