Why 3 separate apps?

[vansante]

Hello! Thanks for your work on creating a Symfony with Temporal sample, it is exactly what Ive been trying to setup last week. I just keep wondering when browsing through the code:

Why do you use 3 separate apps? I see a lot of common code and especially when not dealing with examples, a lot of things (think: entities, logic, etc) would have to be duplicated over 3 apps.

This left me wondering, is this a mandatory split, or can I also build all of it into one combined Symfony app? And if so, how would I go about doing that?

[feuzeu]

Hi,

It is absolutely not necessary to have 3 separate apps.
The goal here was to highlight what each part of the app (api, workflow and activity) needs to be able to operate, and thus have a better understanding of the whole system.

[Edit] For example, there is no database package installed in the workflow worker, because there is no need for data access there.
The workflow api can be started other web servers than RoadRunner, meaning that you can implement your workflow api endpoints in an existing Symfony app.

Depending on your particular use case, you can implement your features in one, two, three or even more apps. You can also choose to have separate apps for different features, with the workflows and activities implemented in the same app.

Please note that you will need a specific configuration in RoadRunner if you want to process both HTTP and Temporal requests in the same app.
Check the dispatcher example here for how to achieve that.
https://docs.roadrunner.dev/docs/php-worker/worker

[vansante]

Thanks a lot for your answer, that clears up some of the questions that I had!

I have been toying with a single App doing all 3 things by moving things into a single app (some code clashes because the class/file names are the same with different contents), but I managed to merge most of it.

However I am now stuck with spawning new workflows (the examples), it throws the exception Calling facade methods can only be made from the currently running process. I am not quite sure what the problem is there.

I will try to separate out a reproducible repository without my own code on Monday if more debugging doesn't bring me any results 😅.

[feuzeu]

Hi,

I've renamed some files to make it a bit more clear what they do.
Check the commit on the repo.

There's also a new Docker Compose file in the docker/all-in-one dir, which will run a single Symfony app with both an api and a Temporal worker.

[vansante]

Wow, that is amazingly helpful! Thanks so much!

It works like a charm. 😄

[feuzeu]

You are welcome.
Happy coding!!