Configure commons-logging to log using java.util.logging

[matthiasblaesing]

It was observed that maven classpath display failed. The stack trace:

 [exec] SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor org.netbeans.modules.maven.repository.ui.ArtifactMultiViewFactory$1
 [exec] java.lang.ClassNotFoundException: org.slf4j.MarkerFactory cannot be found by org.apache.commons.logging_1.3.1
 [exec]     at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
 [exec]     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
 [exec]     at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
 [exec]     at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
 [exec]     at org.netbeans.modules.netbinox.NetbinoxLoader.loadClass(NetbinoxLoader.java:55)
 [exec]     at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
 [exec] Caused: java.lang.NoClassDefFoundError: org/slf4j/MarkerFactory
 [exec]     at org.apache.commons.logging.impl.Slf4jLogFactory.<clinit>(Slf4jLogFactory.java:255)
 [exec]     at java.base/java.lang.Class.forName0(Native Method)
 [exec]     at java.base/java.lang.Class.forName(Class.java:421)
 [exec]     at java.base/java.lang.Class.forName(Class.java:412)
 [exec]     at org.apache.commons.logging.LogFactory.createFactory(LogFactory.java:419)
 [exec]     at org.apache.commons.logging.LogFactory.lambda$newFactory$3(LogFactory.java:1432)
 [exec]     at java.base/java.security.AccessController.doPrivileged(AccessController.java:319)
 [exec]     at org.apache.commons.logging.LogFactory.newFactory(LogFactory.java:1431)
 [exec]     at org.apache.commons.logging.LogFactory.getFactory(LogFactory.java:934)
 [exec]     at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:987)
 [exec]     at org.apache.http.conn.ssl.AbstractVerifier.<init>(AbstractVerifier.java:61)
 [exec]     at org.apache.http.conn.ssl.AllowAllHostnameVerifier.<init>(AllowAllHostnameVerifier.java:44)
 [exec]     at org.apache.http.conn.ssl.AllowAllHostnameVerifier.<clinit>(AllowAllHostnameVerifier.java:46)
 [exec]     at org.apache.http.conn.ssl.SSLConnectionSocketFactory.<clinit>(SSLConnectionSocketFactory.java:151)
 [exec]     at org.eclipse.aether.transport.http.GlobalState.newConnectionManager(GlobalState.java:169)
 [exec]     at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
 [exec]     at org.eclipse.aether.transport.http.GlobalState.getConnectionManager(GlobalState.java:145)
 [exec]     at org.eclipse.aether.transport.http.LocalState.<init>(LocalState.java:62)
 [exec]     at org.eclipse.aether.transport.http.HttpTransporter.<init>(HttpTransporter.java:197)
 [exec]     at org.eclipse.aether.transport.http.HttpTransporterFactory.newInstance(HttpTransporterFactory.java:95)
 [exec]     at org.eclipse.aether.internal.impl.DefaultTransporterProvider.newTransporter(DefaultTransporterProvider.java:

indicates, that commons-logging tries to load slf4j to handle logging, but fails. Running with
"-J-Dorg.apache.commons.logging.diagnostics.dest=STDERR" supports that conclusion:

    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [ENV] Extension directories (java.ext.dir): null
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [ENV] Application classpath (java.class.path): /home/matthias/src/netbeans/nbbuild/netbeans/platform/lib/boot.jar:/home/matthias/src/netbeans/nbbuild/netbeans/platform/lib/org-openide-modules.jar:/home/matthias/src/netbeans/nbbuild/netbeans/platform/lib/org-openide-util.jar:/home/matthias/src/netbeans/nbbuild/netbeans/platform/lib/org-openide-util-lookup.jar:/home/matthias/src/netbeans/nbbuild/netbeans/platform/lib/org-openide-util-ui.jar
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [ENV] Class org.apache.commons.logging.LogFactory was loaded via class loader org.netbeans.modules.netbinox.NetbinoxLoader@244303269
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [ENV] Ancestry of class loader which loaded org.apache.commons.logging.LogFactory is org.netbeans.modules.netbinox.NetbinoxLoader@244303269 == 'NetbinoxLoader delegating to org.apache.commons.logging_1.3.1'
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [ENV] Ancestry of class loader which loaded org.apache.commons.logging.LogFactory is ClassLoader tree:org.netbeans.modules.netbinox.NetbinoxLoader@244303269 --> jdk.internal.loader.ClassLoaders$PlatformClassLoader@1922830567 --> BOOT
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] BOOTSTRAP COMPLETED                                                                                                                                                        
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] LogFactory implementation requested for the first time for context class loader org.codehaus.plexus.classworlds.realm.ClassRealm@1303991949
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] org.codehaus.plexus.classworlds.realm.ClassRealm@1303991949 == 'ClassRealm[project>org.knowm.xchart:xchart:3.8.7, parent: ClassRealm[maven.api, parent: null]]'
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] ClassLoader tree:org.codehaus.plexus.classworlds.realm.ClassRealm@1303991949 --> BOOT
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] No properties file of name 'commons-logging.properties' found.
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] Looking for system property [org.apache.commons.logging.LogFactory] to define the LogFactory subclass to use...
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] No system property [org.apache.commons.logging.LogFactory] defined.
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] Using ServiceLoader  to define the LogFactory subclass to use...
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] No properties file available to determine LogFactory subclass from..
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] Checking if class 'org.apache.logging.log4j.Logger' is available in class loader org.netbeans.modules.netbinox.NetbinoxLoader@244303269
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] Failed to load class 'org.apache.logging.log4j.Logger' from class loader org.netbeans.modules.netbinox.NetbinoxLoader@244303269: org.apache.logging.log4j.Logger
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] Checking if class 'org.slf4j.Logger' is available in class loader org.netbeans.modules.netbinox.NetbinoxLoader@244303269
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] [LOOKUP] SLF4J detected. Loading the SLF4J LogFactory implementation 'org.apache.commons.logging.impl.Slf4jLogFactory'.
    [LogFactory from org.netbeans.modules.netbinox.NetbinoxLoader@244303269] Unable to load factory class via class loader org.codehaus.plexus.classworlds.realm.ClassRealm@1303991949 - trying the class loader associated with this LogFactory.
    SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor org.netbeans.modules.maven.repository.ui.ArtifactMultiViewFactory$1

[matthiasblaesing]

Copy of PR #7346 against delivery instead of master. @ebarboni @mbien sorry for the noise. If you prefer a different approach, feel free to ignore this or tell me what you want me to do.

[mbien]

if we add the labels here, and put Release process on the other PR, this would make sure that it shows up in NB 22 release notes, but not for NB 23 again, right?

[ebarboni]

here we go. No worries looks like ok.