Shaded jar support

[dhoard]

Summary

Shaded jars are commonly required when building libraries to prevent Class collision of project jars.

Proposal

Implement a sharedJar command or extension

Libraries

The jar-relocator library provides code to shade a jar.

[ethauvin]

It should exclude any JAR index or cryptographic signature files matching the following patterns:

• META-INF/INDEX.LIST
• META-INF/*.SF
• META-INF/*.DSA
• META-INF/*.RSA

[ethauvin]

Multiple dependencies may use the same service descriptor file name in META-INF/services. In this case, it is generally desired to merge the content of each instance of the file into a single output file.

[aalmiray]

Watch out also for the explicit module descriptor found at /module-info.class. Maven's shade plugin ignores module descriptors, including those found in /META-INF/versions.