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Plugin Validation

Maven since versions 3.9.x and 4.x introduced Plugin Validation in order to help Maven users and Maven Plugin developers maintain theirs projects.

Internal Plugins Validation issues

Internal Plugins Validation issues (project local) are issues discovered in Maven project configuration, like:

  • using deprecated plugins goals
  • using deprecated plugins parameters
  • using read only plugins parameters

In such cases users can fix their project by fixing configuration by editing their POMs. Users should consult actual plugin documentation or try to update plugin to newer version.

External Plugins Validation issues

External Plugins Validation issues (non-configuration) are issues detected in plugin itself, like:

  • using old, deprecated Maven Api by plugin
  • declaring dependencies for Maven Core artifacts in wrong scope in plugin project

External Plugins issues can only be fix by plugin authors.

In such cases users can try to update plugin to newer version. If the newest version of plugin still has an issue users should report problem to plugin authors.

Manage Plugin Validation verbosity

In order to manage Plugin Validation verbosity a property maven.plugin.validation can be used.

Allowed values are:

  • NONE - mute Plugin Validation completely, nothing will be reported
  • INLINE - report only Internal issues in place where occur
  • BRIEF - report only Internal issues in place where occur and list of plugins with External issues at the and of build
  • SUMMARY - report list of plugins with Internal and External issues at the end of build
  • VERBOSE - report Internal and External issues at the end of build in verbose mode

Configuration values for maven.plugin.validation are case insensitive, can be used on command line, like:

mvn -Dmaven.plugin.validation=verbose ...

Can be added to MAVEN_OPTS or MAVEN_ARGS environment variables, can also be added to .mvn/maven.config file in order to configure per project.

Users can add such property to their settings.xml file to change configuration globally.

NOTICE as maven.plugin.validation is configuration item for Maven itself, it can not be used in project pom.xml

Please consult: