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Maven Feed can't find maven-metadata.xml
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My maven ProGet feed has a connector to https://repo1.maven.org/maven2. When a maven command includes "help:effective-pom" I get a NoPluginFoundForPrefixException exception. When I turn on debugging it appears that maven cannot find org.apache.maven.plugins/maven-metadata.xml. If I try the same command without using my ProGet feed(i.e. https://repo1.maven.org/maven2 directly) it succeeds.
Here is the complete debugging output:
mvn help:effective-pom -X Apache Maven 3.6.2 (40f52333136460af0dc0d7232c0dc0bcf0d9e117; 2019-08-27T11:06:16-04:00) Maven home: C:\apache-maven-3.6.2\bin\.. Java version: 1.8.0_221, vendor: Oracle Corporation, runtime: C:\Program Files (x86)\Java\jdk1.8.0_221\jre Default locale: en_US, platform encoding: Cp1252 OS name: "windows 10", version: "10.0", arch: "x86", family: "windows" [DEBUG] Created new class realm maven.api [DEBUG] Importing foreign packages into class realm maven.api [DEBUG] Imported: javax.annotation.* < plexus.core [DEBUG] Imported: javax.annotation.security.* < plexus.core [DEBUG] Imported: javax.enterprise.inject.* < plexus.core [DEBUG] Imported: javax.enterprise.util.* < plexus.core [DEBUG] Imported: javax.inject.* < plexus.core [DEBUG] Imported: org.apache.maven.* < plexus.core [DEBUG] Imported: org.apache.maven.artifact < plexus.core [DEBUG] Imported: org.apache.maven.classrealm < plexus.core [DEBUG] Imported: org.apache.maven.cli < plexus.core [DEBUG] Imported: org.apache.maven.configuration < plexus.core [DEBUG] Imported: org.apache.maven.exception < plexus.core [DEBUG] Imported: org.apache.maven.execution < plexus.core [DEBUG] Imported: org.apache.maven.execution.scope < plexus.core [DEBUG] Imported: org.apache.maven.lifecycle < plexus.core [DEBUG] Imported: org.apache.maven.model < plexus.core [DEBUG] Imported: org.apache.maven.monitor < plexus.core [DEBUG] Imported: org.apache.maven.plugin < plexus.core [DEBUG] Imported: org.apache.maven.profiles < plexus.core [DEBUG] Imported: org.apache.maven.project < plexus.core [DEBUG] Imported: org.apache.maven.reporting < plexus.core [DEBUG] Imported: org.apache.maven.repository < plexus.core [DEBUG] Imported: org.apache.maven.rtinfo < plexus.core [DEBUG] Imported: org.apache.maven.settings < plexus.core [DEBUG] Imported: org.apache.maven.toolchain < plexus.core [DEBUG] Imported: org.apache.maven.usability < plexus.core [DEBUG] Imported: org.apache.maven.wagon.* < plexus.core [DEBUG] Imported: org.apache.maven.wagon.authentication < plexus.core [DEBUG] Imported: org.apache.maven.wagon.authorization < plexus.core [DEBUG] Imported: org.apache.maven.wagon.events < plexus.core [DEBUG] Imported: org.apache.maven.wagon.observers < plexus.core [DEBUG] Imported: org.apache.maven.wagon.proxy < plexus.core [DEBUG] Imported: org.apache.maven.wagon.repository < plexus.core [DEBUG] Imported: org.apache.maven.wagon.resource < plexus.core [DEBUG] Imported: org.codehaus.classworlds < plexus.core [DEBUG] Imported: org.codehaus.plexus.* < plexus.core [DEBUG] Imported: org.codehaus.plexus.classworlds < plexus.core [DEBUG] Imported: org.codehaus.plexus.component < plexus.core [DEBUG] Imported: org.codehaus.plexus.configuration < plexus.core [DEBUG] Imported: org.codehaus.plexus.container < plexus.core [DEBUG] Imported: org.codehaus.plexus.context < plexus.core [DEBUG] Imported: org.codehaus.plexus.lifecycle < plexus.core [DEBUG] Imported: org.codehaus.plexus.logging < plexus.core [DEBUG] Imported: org.codehaus.plexus.personality < plexus.core [DEBUG] Imported: org.codehaus.plexus.util.xml.Xpp3Dom < plexus.core [DEBUG] Imported: org.codehaus.plexus.util.xml.pull.XmlPullParser < plexus.core [DEBUG] Imported: org.codehaus.plexus.util.xml.pull.XmlPullParserException < plexus.core [DEBUG] Imported: org.codehaus.plexus.util.xml.pull.XmlSerializer < plexus.core [DEBUG] Imported: org.eclipse.aether.* < plexus.core [DEBUG] Imported: org.eclipse.aether.artifact < plexus.core [DEBUG] Imported: org.eclipse.aether.collection < plexus.core [DEBUG] Imported: org.eclipse.aether.deployment < plexus.core [DEBUG] Imported: org.eclipse.aether.graph < plexus.core [DEBUG] Imported: org.eclipse.aether.impl < plexus.core [DEBUG] Imported: org.eclipse.aether.installation < plexus.core [DEBUG] Imported: org.eclipse.aether.internal.impl < plexus.core [DEBUG] Imported: org.eclipse.aether.metadata < plexus.core [DEBUG] Imported: org.eclipse.aether.repository < plexus.core [DEBUG] Imported: org.eclipse.aether.resolution < plexus.core [DEBUG] Imported: org.eclipse.aether.spi < plexus.core [DEBUG] Imported: org.eclipse.aether.transfer < plexus.core [DEBUG] Imported: org.eclipse.aether.version < plexus.core [DEBUG] Imported: org.fusesource.jansi.* < plexus.core [DEBUG] Imported: org.slf4j.* < plexus.core [DEBUG] Imported: org.slf4j.event.* < plexus.core [DEBUG] Imported: org.slf4j.helpers.* < plexus.core [DEBUG] Imported: org.slf4j.spi.* < plexus.core [DEBUG] Populating class realm maven.api [INFO] Error stacktraces are turned on. [DEBUG] Message scheme: color [DEBUG] Message styles: debug info warning error success failure strong mojo project [DEBUG] Reading global settings from C:\apache-maven-3.6.2\bin\..\conf\settings.xml [DEBUG] Reading user settings from C:\Users\berubec\.m2\settings.xml [DEBUG] Reading global toolchains from C:\apache-maven-3.6.2\bin\..\conf\toolchains.xml [DEBUG] Reading user toolchains from C:\Users\berubec\.m2\toolchains.xml [DEBUG] Using local repository at C:\Users\berubec\.m2\repository [DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10.0 for C:\Users\berubec\.m2\repository [INFO] Scanning for projects... [DEBUG] Using mirror proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/) for central (https://repo.maven.apache.org/maven2). [DEBUG] Extension realms for project helloworld:helloworld:war:1.0-SNAPSHOT: (none) [DEBUG] Looking up lifecycle mappings for packaging war from ClassRealm[plexus.core, parent: null] [DEBUG] Resolving plugin prefix help from [org.apache.maven.plugins, org.codehaus.mojo] [DEBUG] Using mirror proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/) for apache.snapshots (http://repository.apache.org/snapshots). [DEBUG] Using mirror proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/) for apache.snapshots (http://people.apache.org/repo/m2-snapshot-repository). [DEBUG] Using mirror proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/) for codehaus.org (http://snapshots.repository.codehaus.org). [DEBUG] Could not find metadata org.apache.maven.plugins/maven-metadata.xml in local (C:\Users\berubec\.m2\repository) [DEBUG] Failure to find org.apache.maven.plugins/maven-metadata.xml in https://proget.seicdevops.com/maven2/Maven-Enterprise/ was cached in the local repository, resolution will not be reattempted until the update interval of proget has elapsed or updates are forced [DEBUG] Could not find metadata org.codehaus.mojo/maven-metadata.xml in local (C:\Users\berubec\.m2\repository) [DEBUG] Failure to find org.codehaus.mojo/maven-metadata.xml in https://proget.seicdevops.com/maven2/Maven-Enterprise/ was cached in the local repository, resolution will not be reattempted until the update interval of proget has elapsed or updates are forced [DEBUG] Could not find metadata org.apache.maven.plugins/maven-metadata.xml in local (C:\Users\berubec\.m2\repository) [DEBUG] Could not find metadata org.codehaus.mojo/maven-metadata.xml in local (C:\Users\berubec\.m2\repository) [DEBUG] Using transporter WagonTransporter with priority -1.0 for https://proget.seicdevops.com/maven2/Maven-Enterprise/ [DEBUG] Using transporter WagonTransporter with priority -1.0 for https://proget.seicdevops.com/maven2/Maven-Enterprise/ [DEBUG] Using connector BasicRepositoryConnector with priority 0.0 for https://proget.seicdevops.com/maven2/Maven-Enterprise/ with username=chris.berube@seicdevops.com, password=*** [DEBUG] Using connector BasicRepositoryConnector with priority 0.0 for https://proget.seicdevops.com/maven2/Maven-Enterprise/ with username=chris.berube@seicdevops.com, password=*** Downloading from proget: https://proget.seicdevops.com/maven2/Maven-Enterprise/org/apache/maven/plugins/maven-metadata.xml Downloading from proget: https://proget.seicdevops.com/maven2/Maven-Enterprise/org/codehaus/mojo/maven-metadata.xml [DEBUG] Writing tracking file C:\Users\berubec\.m2\repository\org\apache\maven\plugins\resolver-status.properties [DEBUG] Writing tracking file C:\Users\berubec\.m2\repository\org\codehaus\mojo\resolver-status.properties [DEBUG] Could not find metadata org.apache.maven.plugins/maven-metadata.xml in proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/) [DEBUG] Could not find metadata org.codehaus.mojo/maven-metadata.xml in proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/) [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.830 s [INFO] Finished at: 2019-10-16T14:59:45-04:00 [INFO] ------------------------------------------------------------------------ [ERROR] No plugin found for prefix 'help' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (C:\Users\berubec\.m2\repository), proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/)] -> [Help 1] org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException: No plugin found for prefix 'help' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (C:\Users\berubec\.m2\repository), proget (https://proget.seicdevops.com/maven2/Maven-Enterprise/)] at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve (DefaultPluginPrefixResolver.java:95) at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefix (MojoDescriptorCreator.java:266) at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor (MojoDescriptorCreator.java:220) at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments (DefaultLifecycleTaskSegmentCalculator.java:104) at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments (DefaultLifecycleTaskSegmentCalculator.java:83) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:89) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192) at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105) at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956) at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288) at org.apache.maven.cli.MavenCli.main (MavenCli.java:192) at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282) at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406) at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347) [ERROR] [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException -
Hello; I think this may have already been addressed in PG-1477, which was shipped in ProGet 5.2.0.
Can you try upgrading to latest version and try again?
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@atripp We have version 5.2.14 but unfortunately it still does not work.
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Thanks; I identified what is causing the error and logged it as PG-1631
it's a bit complicated, and this is the first bug report of it, so i can't estimate when we'll complete it, but so far as I can tell this only impacts the "help" command, so the impact is fairly low. Let me know if this is not correct; we're not maven experts so we don't know how all the commands are used.
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@atripp Thanks for the update. We do need this fixed but for now we have a work around.
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