build failure with java 17

[landryb]

i know it's recent but apparently building master with java 17 fails in the maven-war plugin (running with java 17 is fine):

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.6:war (default) on project geowebcache-webapp: Execution default of goal org.apache.maven.plugins:maven-war-plugin:2.6:war failed: Unable to load the mojo 'war' in the plugin 'org.apache.maven.plugins:maven-war-plugin:2.6' due to an API incompatibility: org.codehaus.plexus.component.repository.exception.ComponentLookupException: null
[ERROR] -----------------------------------------------------
[ERROR] realm =    plugin>org.apache.maven.plugins:maven-war-plugin:2.6
..
...
[ERROR] : ExceptionInInitializerError: Unable to make field private final java.util.Comparator java.util.TreeMap.comparator accessible: module java.base does not "opens java.util" to unnamed module @3a3fb598
[ERROR] -> [Help 1]

i've retried after dropping ~/.m2, and im seeing the same failure building mapstore with java 17. after a quick look, it seems maven-war (at least?) needs an update. will try various random things, but since i dont really enjoy wrestling maven.... :)

the failure im seeing is in gwc, but there might be others in other webapps.

[landryb]

trying to change all the occurences of maven-war-plugin in the various pom.xml files to use 3.4.0 (cf geosolutions-it/MapStore2#9850), but it still fails on sec-proxy:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.6:war (default-war) on project security-proxy: Execution default-war of goal org.apache.maven.plugins:maven-war-plugin:2.6:war failed: Unable to load the mojo 'war' in the plugin 'org.apache.maven.plugins:maven-war-plugin:2.6' due to an API incompatibility: org.codehaus.plexus.component.repository.exception.ComponentLookupException: null

thing is, the sec-proxy pom.xml doesnt mention maven-war-plugin, nor a 2.6 version, so something might bring this version as a default ?

[landryb]

making some progress, now im failing on the df backend, but that's more something to change in the java code itself:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project datafeeder: Fatal error compiling: java.lang.IllegalAccessError: class lombok.javac.apt.LombokProcessor (in unnamed module @0x6a944b0d) cannot access class com.sun.tools.javac.processing.JavacProcessingEnvironment (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.processing to unnamed module @0x6a944b0d -> [Help 1]

[landryb]

making some progress, now im failing on the df backend, but that's more something to change in the java code itself:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project datafeeder: Fatal error compiling: java.lang.IllegalAccessError: class lombok.javac.apt.LombokProcessor (in unnamed module @0x6a944b0d) cannot access class com.sun.tools.javac.processing.JavacProcessingEnvironment (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.processing to unnamed module @0x6a944b0d -> [Help 1]

updating lombok in 57ab02b fixed that failure, now master builds with java 17.

[landryb]

fixed by #4132