System.TypeLoadException: Method 'SendQuery' in type 'MassTransit.EventStoreIntegration.Saga.EventStoreSagaRepository`1' from assembly 'MassTransit.EventStoreIntegration, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null' does not have an implementation.

[PatriceMarin]

Hi Alexey,

I'm working on a project which required saga features. The Sample-Courier provided by MassTransit describes everything I need, except the storing part.

So I'm writing a POC to be more familiar with Routing Slip pattern and so on...based on Sample-Courier and your MassTransit.EventStoreIntegration to store the saga state in EventStore.

When I start the SagaStateMachine host, I've got the following error: "System.TypeLoadException: Method 'SendQuery' in type 'MassTransit.EventStoreIntegration.Saga.EventStoreSagaRepository`1' from assembly 'MassTransit.EventStoreIntegration, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null' does not have an implementation."

I noticed the Task SendQuery<T> method throw: NotImplementedByDesignException("Redis saga repository does not support queries");

Can you explain me why this method is not implemented?

I hope it's clear enough...

Thanks for your help.

[PatriceMarin]

Hi,

It seems the new version of MassTransit has some breaking changes on the ISagaRepository<TSaga> interface.

[alexeyzimarev]

It's because EventStore doesn't have queries. It is the same for all persistence providers that can only fetch entities by key, like Redis: https://masstransit-project.com/usage/sagas/redis.html

[PatriceMarin]

The reason I got this exception is MassTransit.EventstoreIntegration is not compatible with the latest version of MassTransit (v6.2.0).

MassTransit has updated the signature of the SendQuery<T> method of the ISagaRepository<TSaga> interface.

I've made the changes locally and I'm now able to run the host.

Do you think you will be able to apply the changes? Otherwise, I could contribute to the project via a PR?

Just let me know.

Thanks

[alexeyzimarev]

a PR would be great :)

[PatriceMarin]

I do not have permissions to push my branch on the repository.

[alexeyzimarev]

PRa are done from personal forks. Check the GH docs.

On Fri, 13 Mar 2020 at 19:20, Patrice Marin [email protected] wrote:

I do not have permissions to push my branch on the repository.

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[PatriceMarin]

Hi Alexey, My PR does not build. It seems the final step, unit tests, failed after 6 hours. I don't know why. I've run the tests on my laptop....everything works fine.

Any clue?