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Migrate Log4j 2.x to SLF4J 1.x
org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1
Transforms usages of Log4j 2.x to leveraging SLF4J 1.x directly. Note, this currently does not modify
log4j.properties
files.- slf4j
- logging
- log4j
- groupId: org.openrewrite.recipe
- artifactId: rewrite-logging-frameworks
- version: 2.1.0
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 has no required configuration options. It can be activated by adding a dependency on
org.openrewrite.recipe:rewrite-logging-frameworks:2.1.0
in your build file or by running a shell command (in which case no build changes are needed):Gradle
Gradle init script
Maven POM
Maven Command Line
Moderne CLI
- 1.Add the following to your
build.gradle
file:
build.gradle
plugins {
id("org.openrewrite.rewrite") version("6.5.6")
}
rewrite {
activeRecipe("org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1")
}
repositories {
mavenCentral()
}
dependencies {
rewrite("org.openrewrite.recipe:rewrite-logging-frameworks:2.1.0")
}
- 2.Run
gradle rewriteRun
to run the recipe.
- 1.Create a file named
init.gradle
in the root of your project.
init.gradle
initscript {
repositories {
maven { url "https://plugins.gradle.org/m2" }
}
dependencies { classpath("org.openrewrite:plugin:6.5.6") }
}
rootProject {
plugins.apply(org.openrewrite.gradle.RewritePlugin)
dependencies {
rewrite("org.openrewrite.recipe:rewrite-logging-frameworks:2.1.0")
}
rewrite {
activeRecipe("org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1")
}
afterEvaluate {
if (repositories.isEmpty()) {
repositories {
mavenCentral()
}
}
}
}
- 2.Run
gradle --init-script init.gradle rewriteRun
to run the recipe.
- 1.Add the following to your
pom.xml
file:
pom.xml
<project>
<build>
<plugins>
<plugin>
<groupId>org.openrewrite.maven</groupId>
<artifactId>rewrite-maven-plugin</artifactId>
<version>5.13.0</version>
<configuration>
<activeRecipes>
<recipe>org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1</recipe>
</activeRecipes>
</configuration>
<dependencies>
<dependency>
<groupId>org.openrewrite.recipe</groupId>
<artifactId>rewrite-logging-frameworks</artifactId>
<version>2.1.0</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
- 2.Run
mvn rewrite:run
to run the recipe.
shell
mvn -U org.openrewrite.maven:rewrite-maven-plugin:run \
-Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-logging-frameworks:RELEASE \
-Drewrite.activeRecipes=org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1
You will need to have configured the Moderne CLI on your machine before you can run the following command.
shell
mod run . --recipe Log4j2ToSlf4j1
Recipe List
Yaml Recipe List
- oldFullyQualifiedTypeName:
org.apache.logging.log4j.LogManager
- newFullyQualifiedTypeName:
org.slf4j.LoggerFactory
- methodPattern:
org.apache.logging.log4j.Logger fatal(..)
- newMethodName:
error
- methodPattern:
org.apache.logging.log4j.Category fatal(..)
- newMethodName:
error
- oldFullyQualifiedTypeName:
org.apache.logging.log4j.Logger
- newFullyQualifiedTypeName:
org.slf4j.Logger
---
type: specs.openrewrite.org/v1beta/recipe
name: org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1
displayName: Migrate Log4j 2.x to SLF4J 1.x
description: Transforms usages of Log4j 2.x to leveraging SLF4J 1.x directly. Note, this currently does not modify `log4j.properties` files.
tags:
- slf4j
- logging
- log4j
recipeList:
- org.openrewrite.java.ChangeType:
oldFullyQualifiedTypeName: org.apache.logging.log4j.LogManager
newFullyQualifiedTypeName: org.slf4j.LoggerFactory
- org.openrewrite.java.ChangeMethodName:
methodPattern: org.apache.logging.log4j.Logger fatal(..)
newMethodName: error
- org.openrewrite.java.ChangeMethodName:
methodPattern: org.apache.logging.log4j.Category fatal(..)
newMethodName: error
- org.openrewrite.java.ChangeType:
oldFullyQualifiedTypeName: org.apache.logging.log4j.Logger
newFullyQualifiedTypeName: org.slf4j.Logger
- org.openrewrite.java.logging.slf4j.ParameterizedLogging
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.
Last modified 9d ago