I really stuck with this: I need to integrate flyway with the ktor and a custom application.conf fil...

# ktor

[Szymon Lipiński]

I really stuck with this: I need to integrate flyway with the ktor and a custom application.conf file. I have my database connection configured in the application.conf, so I need to have it also use in the flyway when applying migrations... and the place where the conf file is read changes, on my machine is resources/application.conf, on production, who knows, it will be passed as an argument. It looks like a normal configuration, however, it's not really easy to do it.

[e5l]

@cy

[Magno Junior]

hey

[Magno Junior]

common, I was playing with that this weekend.
Look this:
https://github.com/JMagnoJunior/kotlin-ktor-example

[Szymon Lipiński]

Hey. Thanks. You did what I want to avoid. You have hardcoded the database connection in the gradle file. This way it would be hard to deploy the application on production using different database settings.

[Magno Junior]

I am learning kotlin, so I would like to have suggestion about this project to know what I could improve. Maybe it's "too spring" style. I don't know.

[Magno Junior]

@Szymon Lipiński but take a look on the tests

[Magno Junior]

here:
https://github.com/JMagnoJunior/kotlin-ktor-example/blob/master/test/FlywayHelper.kt

[Szymon Lipiński]

I'm learning ktor too. I don't know how to do implement it properly. I want to have settings in one file. I thought about using the application.conf in development, build jar, then use external application.conf on a server with java -jar x-all.jar -config=production_application.conf. In this case I think having the flyway db connection in the gradle build is not the best idea. But I cannot do it differently.

[Magno Junior]

you can use this same api but to use the config from the application.config file

[Szymon Lipiński]

The tests also have a hardcoded db connection. I cannot use it, as I cannot use h2 for testing.

[Szymon Lipiński]

So this is my problem currently: how to remove flyway settings from gradle.build and use the properties.conf everywhere 🙂

[Magno Junior]

yes.. It was hardcoded, but you don't need to...
This is a kotlin file. you can use the config file as you want.

[Szymon Lipiński]

I'd read it from the application.conf. This is the easy part. The hard part is to use flyway without storing the db connection in two files.

[Magno Junior]

you can use this, but getting the config from app. Something like this:

...
        val flyway: Flyway = Flyway.configure()
        .locations(config.location)
        .dataSource("config.dburl, config.user, null)
        .load();
...
    flyway.migrate();

[Saša Šijak]

do the migration from the code https://flywaydb.org/getstarted/firststeps/api

[Saša Šijak]

yeah, the thing Magno says

[Magno Junior]

I did not use on my project because the setup was different. But I will change it. Maybe today on the end of the day.

[Szymon Lipiński]

oh, this way... it makes sense, thank you. I tried to put all the stuff in gradle and I couldn't figure out how to.

[Magno Junior]

@Szymon Lipiński your project is public? If it is I would like to see.. if it's not, no problem 😃

[Szymon Lipiński]

It's not. There is barely anything working. I just started. I have a basic ktor app with one route and now I'm trying to add the flyway stuff.

[Magno Junior]

ok... 😢

[Szymon Lipiński]

I will have a working example today