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.
Tags
slf4j
logging
log4j
Source
​Github, Issue Tracker, Maven Central​
groupId: org.openrewrite.recipe
artifactId: rewrite-logging-frameworks
version: 1.6.0
Usage
This recipe has no required configuration options and can be activated directly after taking a dependency on org.openrewrite.recipe:rewrite-logging-frameworks:1.6.0 in your build file:
Gradle
Maven
build.gradle
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plugins {
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    id("org.openrewrite.rewrite") version("5.20.0")
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}
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​
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rewrite {
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    activeRecipe("org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1")
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}
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​
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repositories {
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    mavenCentral()
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}
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​
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dependencies {
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    rewrite("org.openrewrite.recipe:rewrite-logging-frameworks:1.6.0")
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}
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pom.xml
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<project>
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  <build>
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    <plugins>
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      <plugin>
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        <groupId>org.openrewrite.maven</groupId>
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        <artifactId>rewrite-maven-plugin</artifactId>
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        <version>4.23.0</version>
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        <configuration>
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          <activeRecipes>
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            <recipe>org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1</recipe>
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          </activeRecipes>
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        </configuration>
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        <dependencies>
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          <dependency>
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            <groupId>org.openrewrite.recipe</groupId>
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            <artifactId>rewrite-logging-frameworks</artifactId>
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            <version>1.6.0</version>
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          </dependency>
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        </dependencies>
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      </plugin>
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    </plugins>
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  </build>
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</project>
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Recipes can also be activated directly from the command line by adding the argument -Drewrite.activeRecipes=org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1
Definition
Recipe List
Yaml Recipe List
​Change type​
oldFullyQualifiedTypeName: org.apache.log4j.MDC
newFullyQualifiedTypeName: org.slf4j.MDC
​Migrate Log4j 1.x to Log4j 2.x​
​Migrate Log4j 2.x to SLF4J 1.x​
​Parameterize SLF4J logging statements​
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---
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type: specs.openrewrite.org/v1beta/recipe
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name: org.openrewrite.java.logging.slf4j.Log4j1ToSlf4j1
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displayName: Migrate Log4j 1.x to SLF4J 1.x
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description: Transforms usages of Log4j 1.x to leveraging SLF4J 1.x directly. Note, this currently does not modify `log4j.properties` files.
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tags:
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  - slf4j
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  - logging
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  - log4j
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recipeList:
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  - org.openrewrite.java.ChangeType:
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      oldFullyQualifiedTypeName: org.apache.log4j.MDC
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      newFullyQualifiedTypeName: org.slf4j.MDC
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  - org.openrewrite.java.logging.log4j.Log4j1ToLog4j2
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  - org.openrewrite.java.logging.slf4j.Log4j2ToSlf4j1
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  - org.openrewrite.java.logging.slf4j.ParameterizedLogging
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Convert Logger#error|warn(Throwable#message) to Logger#error|warn(, e)

Migrate Log4j 2.x to SLF4J 1.x

Last modified 5d ago

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