replace log4j with slf4j and logback

unfortunately spring-boot hard code support for an older slf4j and logback, but this is isolated in scenario

Author: cwensel

build-logic/src/main/kotlin/clusterless.java-common-conventions.gradle.kts

@@ -111,7 +111,7 @@ dependencies {
 
         val slf4j = "2.0.16"
         implementation("org.slf4j:slf4j-api:$slf4j")
-        implementation("org.slf4j:slf4j-reload4j:$slf4j")
+
         val logback = "1.5.16"
         implementation("ch.qos.logback:logback-classic:$logback")
         implementation("ch.qos.logback:logback-core:$logback")
@@ -122,9 +122,10 @@ dependencies {
         implementation("org.apache.logging.log4j:log4j-api:$log4j")
         implementation("org.apache.logging.log4j:log4j-core:$log4j")
         implementation("org.apache.logging.log4j:log4j-jul:$log4j")
-        implementation("org.apache.logging.log4j:log4j-slf4j-impl:$log4j")
+        implementation("org.apache.logging.log4j:log4j-slf4j2-impl:$log4j")
         implementation("org.apache.logging.log4j:log4j-to-slf4j:$log4j")
         implementation("org.apache.logging.log4j:log4j-web:$log4j")
+        implementation("org.apache.logging.log4j:log4j-layout-template-json:$log4j")
 
         implementationAndTestFixture("com.jayway.jsonpath:json-path:2.9.0")
         implementationAndTestFixture("com.google.guava:guava:33.4.0-jre")
@@ -190,7 +191,6 @@ dependencies {
 
         testImplementationAndTestFixture("ch.qos.logback:logback-classic:$logback")
         testImplementationAndTestFixture("ch.qos.logback:logback-core:$logback")
-        testImplementationAndTestFixture("org.slf4j:slf4j-reload4j:$slf4j")
     }
 }
 

clusterless-substrate-aws-lambda-arc/src/main/resources/log4j2.xml

@@ -18,7 +18,6 @@ dependencies {
     api(project(":clusterless-substrate-aws-lambda-common-model"))
 
     implementation("com.google.guava:guava")
-//    implementation("com.cronutils:cron-utils")
 
     implementation("com.fasterxml.jackson.core:jackson-core")
     implementation("com.fasterxml.jackson.core:jackson-databind")
@@ -30,14 +29,11 @@ dependencies {
     api("software.amazon.awssdk:eventbridge")
     api("software.amazon.awssdk:glue")
 
+    // https://docs.aws.amazon.com/lambda/latest/dg/java-logging.html#java-logging-log4j2
     api("com.amazonaws:aws-lambda-java-core")
-    api("com.amazonaws:aws-lambda-java-log4j2") {
-        exclude("org.apache.logging.log4j")
-        exclude("log4j:log4j")
-        exclude("org.slf4j:slf4j-log4j12")
-    }
-
-    implementation("org.slf4j:slf4j-reload4j")
+    api("com.amazonaws:aws-lambda-java-log4j2")
+    implementation("org.apache.logging.log4j:log4j-slf4j2-impl")
+    implementation("org.apache.logging.log4j:log4j-layout-template-json")
 
     testFixturesImplementation(project(":clusterless-common"))
     testFixturesImplementation(project(":clusterless-model"))

clusterless-substrate-aws-lambda-common/build.gradle.kts

@@ -0,0 +1,29 @@
+<!--
+  ~ Copyright (c) 2023-2025 Chris K Wensel <chris@wensel.net>. All Rights Reserved.
+  ~
+  ~ This Source Code Form is subject to the terms of the Mozilla Public
+  ~ License, v. 2.0. If a copy of the MPL was not distributed with this
+  ~ file, You can obtain one at http://mozilla.org/MPL/2.0/.
+  -->
+
+<Configuration>
+    <Appenders>
+        <Lambda name="Lambda" format="${env:AWS_LAMBDA_LOG_FORMAT:-TEXT}">
+            <LambdaTextFormat>
+                <PatternLayout>
+                    <pattern>%d{yyyy-MM-dd HH:mm:ss} %X{AWSRequestId} %-5p %c{1} - %m%n</pattern>
+                </PatternLayout>
+            </LambdaTextFormat>
+            <LambdaJSONFormat>
+                <JsonTemplateLayout eventTemplateUri="classpath:LambdaLayout.json"/>
+            </LambdaJSONFormat>
+        </Lambda>
+    </Appenders>
+    <Loggers>
+        <Root level="${env:AWS_LAMBDA_LOG_LEVEL:-INFO}">
+            <AppenderRef ref="Lambda"/>
+        </Root>
+        <Logger name="software.amazon.awssdk" level="WARN"/>
+        <Logger name="software.amazon.awssdk.request" level="INFO"/>
+    </Loggers>
+</Configuration>