Where are the http4k connect gradle plugins actual...

# http4k

[Andrew O'Hara]

Where are the http4k connect gradle plugins actually published? I think the example repo is just using the locally built plugins.

[dave]

Not sure what you mean here?

[dave]

the KSP generator is here: mvnrepository.com/artifact/org.http4k/http4k-connect-ksp-generator/6.55.0.0

and you apply it with

ksp("org.http4k:http4k-connect-ksp-generator:${project.property("http4kVersion")}")

... but that's not a gradle plugin per se

[dave]

we also have custom gradle plugins in the main repo of course, but I don't think you mean this? 🙂

[Andrew O'Hara]

I'm specifically looking for the plugin that processes the @Http4kConnectClient actions. But I'm not actually sure if it's intended for use externally 😅

[dave]

it's just the KSP plugin, so in the examples repo:

plugins {
    alias(libs.plugins.ksp)
}

[dave]

the KSP generator is applied in the gradle to the source set (main/test/testFixtures etc) and all registered generators are invoked for each

[Andrew O'Hara]

Well, the example module has these plugins. I feel like if I just add KSP to my project, it won't pick up the custom KSP generator, hence the need for the http4k-connect "plugin".

id("org.http4k.conventions")
id("org.http4k.connect.module")
id("org.http4k.connect.client")

I assume what I want is the client plugin. But, if I assume the plugins have the same versioning scheme, I use

id("org.http4k.connect.client") version "6.55.0.0"

Which just results in an error

Plugin [id: 'org.http4k.connect.client', version: '6.55.0.0'] was not found in any of the following sources:

My assumption is that this plugin isn't actually published anywhere.

[dave]

ah - you're talking about the main repo. The "plug-ins" that exist in the gradle folder are indeed just custom plugins for the repo and do not get published anywhere

[dave]

id("org.http4k.connect.client") version "6.55.0.0"

^^ so this won't work.

[dave]

are you trying to write an equivalent set of plugins for your own repo (as opposed to anything to do with the http4k connect functionalities)?

[Andrew O'Hara]

Yeah. I was just hoping to build a completely unrelated client in the style of http4k-connect. No worries that it's unsupported.

[dave]

so are you looking to publish an actual gradle plugin?

[Andrew O'Hara]

No. I was just hoping one already existed.

[dave]

if you add KSP and register the generator it should pick up the generator

[Andrew O'Hara]

Ah, that makes sense. Import the ksp-generator module and then run ksp on it. That's exactly what the gradle conventions plugin for connect does.

Except, trying to run the generator module gives me a KSP error. I believe I'm running the same versions as http4k, so that's not the issue 🤔.

Unable to load class 'com.google.devtools.ksp.impl.KotlinSymbolProcessing$ExitCode'.

[dave]

hmmm - that does smells like something "version-y"

[Andrew O'Hara]

You would think so

[dave]

set the bot on it?

[dave]

claude likes smashing it's head against gradle 😂

[Andrew O'Hara]

It thinks ksp is still coupled to the kotlin version 😢 . Could try a smarter one though.

[Andrew O'Hara]

Well, you've given me everything I need at this point. I'll try to work it out on my own, but not a big deal if I can't get the autogenerated extension functions. Thanks for the help!

[Andrew O'Hara]

Well Gemini 3 flash and a cloud 4.5 opus both think ksp versions are still coupled to kotlin versions. I tried claude 4.8 opus next, and specifically told it not to make that same mistake.

Turns out the problem was that my dependency catalog entry was pointing to http4k-core laugh cry face palm

[Andrew O'Hara]

Well... I don't think Onvif/SOAP fits nicely into http4k-connect, since the request body sometimes requires the credentials. But this is still useful knowledge for later.

[dave]

well if it's something like:

<wrapper user="asd" password="pw"><body/></wrapper>

and the body varies then you can always inject the body into the action and then synthesize the entire thing in the underlying adapter

[Andrew O'Hara]

Yeah... in fact I already do something similar in another onvif client.