Migrate Log4j 1.x to SLF4J 1.x
org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1
Transforms usages of Log4j 1.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: 1.20.1
This recipe has no required configuration options. It can be activated by adding a dependency on
org.openrewrite.recipe:rewrite-logging-frameworks:1.20.1
in your build file or by running a shell command (in which case no build changes are needed):Gradle
Maven POM
Maven Command Line
build.gradle
plugins {
id("org.openrewrite.rewrite") version("5.40.4")
}
rewrite {
activeRecipe("org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1")
}
repositories {
mavenCentral()
}
dependencies {
rewrite("org.openrewrite.recipe:rewrite-logging-frameworks:1.20.1")
}
pom.xml
<project>
<build>
<plugins>
<plugin>
<groupId>org.openrewrite.maven</groupId>
<artifactId>rewrite-maven-plugin</artifactId>
<version>4.45.0</version>
<configuration>
<activeRecipes>
<recipe>org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1</recipe>
</activeRecipes>
</configuration>
<dependencies>
<dependency>
<groupId>org.openrewrite.recipe</groupId>
<artifactId>rewrite-logging-frameworks</artifactId>
<version>1.20.1</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
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.Log4j1ToSlf4j1
Recipe List
Yaml Recipe List
- oldFullyQualifiedTypeName:
org.apache.log4j.MDC
- newFullyQualifiedTypeName:
org.slf4j.MDC
---
type: specs.openrewrite.org/v1beta/recipe
name: org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1
displayName: Migrate Log4j 1.x to SLF4J 1.x
description: Transforms usages of Log4j 1.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.log4j.MDC
newFullyQualifiedTypeName: org.slf4j.MDC
- org.openrewrite.java.logging.log4j.Log4j1ToLog4j2
- org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1
- org.openrewrite.java.logging.slf4j.ParameterizedLogging
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