Migrate Log4j to SLF4J
Recipe ID
org.openrewrite.java.logging.slf4j.Log4jToSlf4jArtifact
org.openrewrite.recipe:rewrite-logging-frameworksMigrates usage of Apache Log4j to using SLF4J directly. Use of the traditional Log4j to SLF4J bridge can result in loss of performance, as the Log4j messages must be formatted before they can be passed to SLF4J. Note, this currently does not modify log4j.properties files.
Usage
This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.
mod run . --recipe org.openrewrite.java.logging.slf4j.Log4jToSlf4jIf the recipe isn’t available locally, install it with:
mod config recipes jar install org.openrewrite.recipe:rewrite-logging-frameworks:3.31.0Definition
This recipe runs the following recipes in order.
- Migrate Log4j 1.x to SLF4J 1.x
org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1 - Loggers should be named for their enclosing classes
org.openrewrite.java.logging.slf4j.LoggersNamedForEnclosingClass - Upgrade Gradle or Maven dependency versions
org.openrewrite.java.dependencies.UpgradeDependencyVersion - Upgrade Gradle or Maven dependency versions
org.openrewrite.java.dependencies.UpgradeDependencyVersion - Add Gradle or Maven dependency
org.openrewrite.java.dependencies.AddDependency - Add Gradle or Maven dependency
org.openrewrite.java.dependencies.AddDependency - Add Gradle or Maven dependency
org.openrewrite.java.dependencies.AddDependency - Add Gradle or Maven dependency
org.openrewrite.java.dependencies.AddDependency - Change Gradle or Maven dependency
org.openrewrite.java.dependencies.ChangeDependency
Data tables
Structured output this recipe can produce.
- Source files that had resultsSource files that were modified by the recipe run.
org.openrewrite.table.SourcesFileResults - Source files that had search resultsSearch results that were found during the recipe run.
org.openrewrite.table.SearchResults - Source files that errored on a recipeThe details of all errors produced by a recipe run.
org.openrewrite.table.SourcesFileErrors - Recipe performanceStatistics used in analyzing the performance of recipes.
org.openrewrite.table.RecipeRunStats