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ZIO learning - using standard ZIO config system with external provider / published by https://github.com/dacr/code-examples-manager #8c63c270-2be2-4bdf-ae7d-856768bb3a89/f16cee30de57514558c56f366f969025b5a1cbcc
// summary : ZIO learning - using standard ZIO config system with external provider
// keywords : scala, zio, learning, pure-functional, typesafeconfig, config, @testable
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 8c63c270-2be2-4bdf-ae7d-856768bb3a89
// created-on : 2023-04-28T08:23:40+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file
// ---------------------
//> using scala "3.2.2"
//> using dep "dev.zio::zio:2.0.13"
//> using dep "dev.zio::zio-config:4.0.0-RC14"
//> using dep "dev.zio::zio-config-typesafe:4.0.0-RC14"
//> using dep "dev.zio::zio-config-magnolia:4.0.0-RC14"
// ---------------------
import zio.*
import zio.config.*
import zio.config.typesafe.*
import zio.config.magnolia.*
case class DatabaseConfig(
name: String,
host: String,
port: Int
)
object DatabaseConfig {
val config: Config[DatabaseConfig] = deriveConfig[DatabaseConfig].mapKey(toKebabCase).nested("database")
}
object Encapsulated extends ZIOAppDefault {
// -------------------------------------------------------------
val configProvider =
ConfigProvider.fromHoconString(
input = s"""database {
| name = exampleDB
| host = localhost
| port = 43
|}
|""".stripMargin
)
override val bootstrap: ZLayer[ZIOAppArgs, Any, Any] =
Runtime.setConfigProvider(configProvider)
// -------------------------------------------------------------
val logic = for {
myConf <- ZIO.config(DatabaseConfig.config)
_ <- Console.printLine(myConf)
} yield ()
// -------------------------------------------------------------
override def run = {
logic
}
}
Encapsulated.main(Array.empty)
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