Adapt plugincache MergeStrategy to sbt-assembly:2.0.0

[shaw-papadino]

Hello. Can I use adapted Log4j2MergeStrategy to sbt-assembly:2.0.0 ?

AsIs

When I change the version of sbt-assembly of the project including log4j2 plugins to 2.0.0 and run sbt assembly,
I get the following error.

[error] java.lang.IncompatibleClassChangeError: class sbtassembly.Log4j2MergeStrategy$$anon$1 has interface sbtassembly.MergeStrategy as super class
[error] 	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
[error] 	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
[error] 	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
[error] 	at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:550)
[error] 	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:458)
[error] 	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:452)
[error] 	at java.base/java.security.AccessController.doPrivileged(Native Method)
[error] 	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:451)
[error] 	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
[error] 	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
[error] 	at sbtassembly.Log4j2MergeStrategy$.<init>(Log4j2MergeStrategy.scala:10)
[error] 	at sbtassembly.Log4j2MergeStrategy$.<clinit>(Log4j2MergeStrategy.scala)
[error] 	at $29c5b19eaf522355c3d4$.$anonfun$lambda$minusadd$minusmeasurement$4(build.sbt:137)
[error] 	at sbtassembly.Assembly$.$anonfun$assemble$31(Assembly.scala:311)
[error] 	at sbtassembly.Assembly$.$anonfun$assemble$31$adapted(Assembly.scala:311)
[error] 	at scala.collection.TraversableLike.$anonfun$partition$1(TraversableLike.scala:450)
[error] 	at scala.collection.Iterator.foreach(Iterator.scala:943)
[error] 	at scala.collection.Iterator.foreach$(Iterator.scala:943)
[error] 	at scala.collection.AbstractIterator.foreach(Iterator.scala:1431)
[error] 	at scala.collection.IterableLike.foreach(IterableLike.scala:74)
[error] 	at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
[error] 	at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
[error] 	at scala.collection.TraversableLike.partition(TraversableLike.scala:450)
[error] 	at scala.collection.TraversableLike.partition$(TraversableLike.scala:448)
[error] 	at scala.collection.AbstractTraversable.partition(Traversable.scala:108)
[error] 	at sbtassembly.Assembly$.$anonfun$assemble$30(Assembly.scala:311)
[error] 	at sbtassembly.Assembly$.timed$1(Assembly.scala:225)
[error] 	at sbtassembly.Assembly$.assemble(Assembly.scala:309)
[error] 	at sbtassembly.Assembly$.$anonfun$assemblyTask$1(Assembly.scala:193)
[error] 	at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] 	at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] 	at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error] 	at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error] 	at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] 	at sbt.Execute.work(Execute.scala:291)
[error] 	at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error] 	at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] 	at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[error] 	at java.base/java.lang.Thread.run(Thread.java:834)
[error] (assembly) java.lang.IncompatibleClassChangeError: class sbtassembly.Log4j2MergeStrategy$$anon$1 has interface sbtassembly.MergeStrategy as super class
[error] Total time: 10 s, completed 2022/11/08 16:00:13

ToBe

Log4j2MergeStrategy supports sbt-assembly:2.0.0.

[conet]

It's unfortunate that this plugin seems to be unmaintained, I had to resort to this: sbt/sbt-assembly#501

[mpollmeier]

I had the same needs, so I forked, upgraded and released it.
For instructions see https://github.com/mpollmeier/sbt-assembly-log4j2

Special thanks to @fnqista for his PR.