# ktor


02/02/2022, 6:24 AM
FEEDBACK NEEDED Folks, 2.0 is around the corner, and we are polishing up the last of our work on the new version. As you may be aware, we’re going to introduce a new API for writing custom plugins that is fluent and easy to use (you can read more about here We’ve made a new plugin API to extend the existing one with the same types.
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val DataTransformationPlugin = createApplicationPlugin(name = "DataTransformationPlugin", ::Config) {
    // ...
It turns out that if the library mode is enabled, it becomes a bit more complicated to read because of the type:
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public val DataTransformationPlugin: ApplicationPlugin<Application, Config, PluginInstance> = createApplicationPlugin(name = "DataTransformationPlugin", ::Config) {
where Application and PluginInstance are fixed. We’re thinking about several options on how we can solve this: First option Drop obsolete generic parameters from
and keep it as
We need to introduce
_NAME_ApplicationPlugin<Application, Config, PluginInstance>
replacement for existing plugins, so it will be a breaking change.
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public val DataTransformationPlugin: ApplicationPlugin<Config> = createApplicationPlugin(name = "DataTransformationPlugin", ::Config) {    // ...
Second Option Introduce typealias
and keep
as it is.
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public val DataTransformationPlugin: NAME<Config> = createApplicationPlugin(name = "DataTransformationPlugin", ::Config) {
    // ...
Third Option Keep
ApplicationPlugin<Application, Config, Instance>
as it is. The problem with introducing NAME is precisely what we could call something that actually already has a name, i.e. ApplicationPlugin. Anything along the lines of “Default”, “Simple” or similar incorrectly could lead to the wrong assumptions. What are your thoughts on this?
👏 1
🎉 3
1️⃣ 5
🚀 3
👍 2

Big Chungus

02/02/2022, 7:57 AM
Seeing as 2.0 already introduces some breaking changes, I'd prefer option one and have it clean moving forward. I'm confident the community will upgrade third party plugins pretty quickly.


02/02/2022, 10:20 AM
💯 Agreed, it also doesn’t like such a big breaking change that it becomes an enormous hassle to migrate IMO.


02/03/2022, 8:54 AM
Thanks all for feedback.