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fuel-reactor

The reactor extension package for Fuel.

Installation

You can download and install fuel-reactor with Maven and Gradle. The reactor package has the following dependencies:

  • Fuel
  • Project Reactor: 3.2.2.RELEASE
implementation 'com.github.kittinunf.fuel:fuel:<latest-version>'
implementation 'com.github.kittinunf.fuel:fuel-reactor:<latest-version>'

Usage

See FuelReactor.kt

Responses

The Reactor module API provides functions starting with the prefix mono to handle instances of Response, Result<T, FuelError> and values directly (String, ByteArray, Any). All functions expose exceptions as FuelError instance.

Data handling example

Fuel.get("https://icanhazdadjoke.com")
    .header(Headers.ACCEPT to "text/plain")
    .monoString()
    .subscribe(::println)

Error handling example

data class Guest(val name: String)

object GuestMapper : ResponseDeserializable<Guest> {
    override fun deserialize(content: String) =
        jacksonObjectMapper().readValue<Guest>(content)
}

Fuel.get("/guestName").monoResultObject(GuestMapper)
    .map(Result<Guest, FuelError>::get)
    .map { (name) -> "Welcome to the party, $name!" }
    .onErrorReturn("I'm sorry, your name is not on the list.")
    .subscribe(::println)

Response handling example

FuelManager.instance.basePath = "https://httpbin.org"

Fuel.get("/status/404").monoResponse()
    .filter(Response::isSuccessful)
    .switchIfEmpty(Fuel.get("/status/200").monoResponse())
    .map(Response::statusCode)
    .subscribe(::println)