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LaunchDarklyClient.scala
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LaunchDarklyClient.scala
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/*
* Copyright 2022 Ben Plommer
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.github.bplommer.launchcatsly
import cats.effect.{Resource, Sync}
import cats.~>
import com.launchdarkly.sdk.server.{LDClient, LDConfig}
import com.launchdarkly.sdk.{LDUser, LDValue}
trait LaunchDarklyClient[F[_]] { self =>
def unsafeWithJavaClient[A](f: LDClient => A): F[A]
def boolVariation(featureKey: String, user: LDUser, defaultValue: Boolean): F[Boolean]
def stringVariation(featureKey: String, user: LDUser, defaultValue: String): F[String]
def intVariation(featureKey: String, user: LDUser, defaultValue: Int): F[Int]
def doubleVariation(featureKey: String, user: LDUser, defaultValue: Double): F[Double]
def jsonVariation(featureKey: String, user: LDUser, defaultValue: LDValue): F[LDValue]
def mapK[G[_]](fk: F ~> G): LaunchDarklyClient[G]
}
object LaunchDarklyClient {
def resource[F[_]](sdkKey: String, config: LDConfig)(implicit
F: Sync[F]
): Resource[F, LaunchDarklyClient[F]] =
Resource
.make(F.blocking(new LDClient(sdkKey, config)))(cl => F.blocking(cl.close()))
.map { ldClient =>
new LaunchDarklyClient.Default[F] {
override def unsafeWithJavaClient[A](f: LDClient => A): F[A] =
F.blocking(f(ldClient))
}
}
trait Default[F[_]] extends LaunchDarklyClient[F] {
self =>
override def boolVariation(featureKey: String, user: LDUser, default: Boolean): F[Boolean] =
unsafeWithJavaClient(_.boolVariation(featureKey, user, default))
override def stringVariation(featureKey: String, user: LDUser, default: String): F[String] =
unsafeWithJavaClient(_.stringVariation(featureKey, user, default))
override def intVariation(featureKey: String, user: LDUser, default: Int): F[Int] =
unsafeWithJavaClient(_.intVariation(featureKey, user, default))
override def doubleVariation(featureKey: String, user: LDUser, default: Double): F[Double] =
unsafeWithJavaClient(_.doubleVariation(featureKey, user, default))
override def jsonVariation(featureKey: String, user: LDUser, default: LDValue): F[LDValue] =
unsafeWithJavaClient(_.jsonValueVariation(featureKey, user, default))
override def mapK[G[_]](fk: F ~> G): LaunchDarklyClient[G] = new LaunchDarklyClient.Default[G] {
override def unsafeWithJavaClient[A](f: LDClient => A): G[A] = fk(
self.unsafeWithJavaClient(f)
)
}
}
}