Skip to main content

Migrate from LaunchDarkly to OpenFeature

org.openrewrite.featureflags.launchdarkly.MigrateLaunchDarklyToOpenFeature

Migrate call sites from the LaunchDarkly server SDK to the vendor-neutral OpenFeature API, backed by the LaunchDarkly OpenFeature provider. Flag evaluations are renamed and their arguments reordered (LaunchDarkly takes the context as the second argument; OpenFeature takes it last), LDContext construction becomes MutableContext, and LDClient becomes dev.openfeature.sdk.Client. The one-time provider bootstrap (OpenFeatureAPI.setProviderAndWait(...)) is intentionally left for manual configuration.

Recipe source​

GitHub: launchdarkly-openfeature.yml, Issue Tracker, Maven Central

info

This recipe is composed of more than one recipe. If you want to customize the set of recipes this is composed of, you can find and copy the GitHub source for the recipe from the link above.

This recipe is available under the Moderne Source Available License.

Definition​

  • Migrate LDUser to LDContext
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient boolVariation(String, com.launchdarkly.sdk.LDContext, boolean)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient stringVariation(String, com.launchdarkly.sdk.LDContext, String)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient intVariation(String, com.launchdarkly.sdk.LDContext, int)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient doubleVariation(String, com.launchdarkly.sdk.LDContext, double)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient boolVariationDetail(String, com.launchdarkly.sdk.LDContext, boolean)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient stringVariationDetail(String, com.launchdarkly.sdk.LDContext, String)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient intVariationDetail(String, com.launchdarkly.sdk.LDContext, int)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Reorder method arguments
    • methodPattern: com.launchdarkly.sdk.server.LDClient doubleVariationDetail(String, com.launchdarkly.sdk.LDContext, double)
    • newParameterNames: [key, value, context]
    • oldParameterNames: [key, context, value]
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient boolVariation(..)
    • newMethodName: getBooleanValue
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient stringVariation(..)
    • newMethodName: getStringValue
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient intVariation(..)
    • newMethodName: getIntegerValue
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient doubleVariation(..)
    • newMethodName: getDoubleValue
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient boolVariationDetail(..)
    • newMethodName: getBooleanDetails
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient stringVariationDetail(..)
    • newMethodName: getStringDetails
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient intVariationDetail(..)
    • newMethodName: getIntegerDetails
  • Change method name
    • methodPattern: com.launchdarkly.sdk.server.LDClient doubleVariationDetail(..)
    • newMethodName: getDoubleDetails
  • Migrate LaunchDarkly LDClient construction to OpenFeature
  • Migrate LaunchDarkly LDContext to OpenFeature MutableContext
  • Migrate LaunchDarkly LDValue and jsonValueVariation to OpenFeature
  • Migrate LaunchDarkly LDClient lifecycle calls to OpenFeature
  • Mark incompatible LaunchDarkly EvaluationDetail accessors
  • Change type
    • oldFullyQualifiedTypeName: com.launchdarkly.sdk.server.LDClient
    • newFullyQualifiedTypeName: dev.openfeature.sdk.Client
  • Change type
    • oldFullyQualifiedTypeName: com.launchdarkly.sdk.LDContext
    • newFullyQualifiedTypeName: dev.openfeature.sdk.EvaluationContext
  • Change type
    • oldFullyQualifiedTypeName: com.launchdarkly.sdk.ContextBuilder
    • newFullyQualifiedTypeName: dev.openfeature.sdk.MutableContext
  • Change type
    • oldFullyQualifiedTypeName: com.launchdarkly.sdk.EvaluationDetail
    • newFullyQualifiedTypeName: dev.openfeature.sdk.FlagEvaluationDetails
  • Add Gradle or Maven dependency
    • groupId: dev.openfeature
    • artifactId: sdk
    • version: latest.release
    • onlyIfUsing: dev.openfeature.sdk.Client
  • Add Gradle or Maven dependency
    • groupId: com.launchdarkly
    • artifactId: launchdarkly-openfeature-serverprovider
    • version: latest.release
    • onlyIfUsing: dev.openfeature.sdk.Client

Usage​

This recipe has no required configuration options. It can be activated by adding a dependency on `org.openrewrite.recipe:rewrite-feature-flags` in your build file or by running a shell command (in which case no build changes are needed):

  1. Add the following to your build.gradle file:
    build.gradle
    plugins {
        id("org.openrewrite.rewrite") version("latest.release")
    }

    rewrite {
        activeRecipe("org.openrewrite.featureflags.launchdarkly.MigrateLaunchDarklyToOpenFeature")
        setExportDatatables(true)
    }

    repositories {
        mavenCentral()
    }

    dependencies {
        rewrite("org.openrewrite.recipe:rewrite-feature-flags:1.22.0")
    }
  2. Run gradle rewriteRun to run the recipe.

See how this recipe works across multiple open-source repositories​

Run this recipe on OSS repos at scale with the Moderne SaaS.

The community edition of the Moderne platform enables you to easily run recipes across thousands of open-source repositories.

Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.

Data Tables​

Source files that had results​

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column NameDescription
Source path before the runThe source path of the file before the run. null when a source file was created during the run.
Source path after the runA recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changesIn a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changesThe specific recipe that made a change.
Estimated time savingAn estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
CycleThe recipe cycle in which the change was made.