Extends retry functionality to handle operations returning Arrow's Either type, facilitating error handling without exceptions. Enhances retry logic with customizable policies.
An extension library for kotlin-retry that provides retry functionality for Arrow's Either type.
This library extends kotlin-retry to handle Arrow's Either return types, making it easier to implement retry logic for operations that return Either<E, A>. It's particularly useful when you need to retry operations that may fail but use Either for error handling instead of exceptions.
Add the following dependency to your build.gradle.kts or build.gradle file:
dependencies {
implementation("com.michael-bull.kotlin-retry:kotlin-retry:2.0.1")
implementation("com.jsoizo:kotlin-retry-arrow-either:0.1.0")
}
The library provides a retry function that works similarly to the one provided by kotlin-retry, but it expects a function that returns an Either<E, A> instead of a function that throws an exception.
Retry policies are defined using the functions provided by kotlin-retry, such as constantDelay, binaryExponentialBackoff, etc.
import arrow.core.Either
import com.github.michaelbull.retry.policy.stopAtAttempts
import com.jsoizo.retryeither.retry
val fiveTimes = stopAtAttempts<AttemptsError>(5)
suspend fun fetchData(): Either<FetchError, Data> =
retry(retryPolicy = fiveTimes) {
// Call an API that returns Either<FetchError, Data>
callApi()
}
This library is released under the MIT License. See LICENSE for details.
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