ZIO HTTP is a scala library for building http apps. It is powered by ZIO and Netty and aims at being the defacto solution for writing, highly scalable and performant web applications using idiomatic Scala.
Setup via build.sbt:
libraryDependencies += "dev.zio" %% "zio-http" % "3.0.0-RC6"NOTES ON VERSIONING:
- Older library versions
1.xor2.xwith organizationio.d11of ZIO Http are derived from Dream11, the organization that donated ZIO Http to the ZIO organization in 2022. - Newer library versions, starting in 2023 and resulting from the ZIO organization started with
0.0.x, reaching1.0.0release candidates in April of 2023
ZIO HTTP provides a simple and expressive API for building HTTP applications. It supports both server and client-side APIs.
ZIO HTTP is designed in terms of HTTP as function, where both server and client are a function from Request to Response.
The following example demonstrates how to build a simple greeting server. It contains 2 routes: one on the root
path, it responds with a fixed string, and one route on the path /greet that responds with a greeting message
based on the query parameter name.
import zio._
import zio.http._
object GreetingServer extends ZIOAppDefault {
val routes =
Routes(
Method.GET / Root -> handler(Response.text("Greetings at your service")),
Method.GET / "greet" -> handler { (req: Request) =>
val name = req.queryParamToOrElse("name", "World")
Response.text(s"Hello $name!")
}
)
def run = Server.serve(routes).provide(Server.default)
}The following example demonstrates how to call the greeting server using the ZIO HTTP client:
import zio._
import zio.http._
object GreetingClient extends ZIOAppDefault {
val app =
for {
client <- ZIO.serviceWith[Client](_.host("localhost").port(8080))
request = Request.get("greet").addQueryParam("name", "John")
response <- client.request(request)
_ <- response.body.asString.debug("Response")
} yield ()
def run = app.provide(Client.default, Scope.default)
}Learn more on the ZIO Http homepage!
For the general guidelines, see ZIO contributor's guide.
See the Code of Conduct
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