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Creating a new phase

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我寻月下人不归
我寻月下人不归 2020-12-13 19:14

I am working on a project using Maven for which I need two new phases: \'analyze\' and \'eval\' (for different phases of data analysis). I\'ve read all the docs I can find,

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  • 忘掉有多难
    忘掉有多难 (楼主)
    2020-12-13 19:34

    There are a number of bugs in Maven that interfer with John's approach:

    The following should actually be part of John's answer but my edits were confused with commenting about his approach rather than highlighting the current limitations of the approach... so here they are as a second answer :rolleyes:

    This requires Maven 3.0 or newer to work. When you try to use this in Maven 2.x you will get a error such as:

    $ mvn eval
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Invalid task 'eval': you must specify a valid lifecycle phase, or a goal 
in the format plugin:goal or pluginGroupId:pluginArtifactId:pluginVersion:goal
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Tue Sep 18 15:58:12 IST 2012
[INFO] Final Memory: 2M/81M
[INFO] ------------------------------------------------------------------------

    At least as of Maven 3.0.4 it does not list these phases in the help text when you invoke Maven without a goal or phase:

    $ mvn
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.224s
[INFO] Finished at: Tue Sep 18 16:03:20 IST 2012
[INFO] Final Memory: 2M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] No goals have been specified for this build. You must specify a valid 
lifecycle phase or a goal in the format : or 
:[:]:. Available 
lifecycle phases are: validate, initialize, generate-sources, process-sources, 
generate-resources, process-resources, compile, process-classes, 
generate-test-sources, process-test-sources, generate-test-resources, 
process-test-resources, test-compile, process-test-classes, test, 
prepare-package, package, pre-integration-test, integration-test, 
post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, 
pre-site, site, post-site, site-deploy. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[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/NoGoalSpecifiedException

    In a multi-module build you can end up screwed.

    Consider the following two extenions modules:

    Extension 1

    
  
    
      org.apache.maven.lifecycle.mapping.LifecycleMapping
      fancy
      
        org.apache.maven.lifecycle.mapping.DefaultLifecycleMapping
      
    
    
      org.apache.maven.lifecycle.Lifecycle
      org.apache.maven.lifecycle.Lifecycle
      fancy
      
         fancy
         
            fancy
         
         
            org.codehaus.mojo:rpm-maven-plugin:version

    Extension 2

    
  
    
      org.apache.maven.lifecycle.mapping.LifecycleMapping
      poncy
      
        org.apache.maven.lifecycle.mapping.DefaultLifecycleMapping
      
    
    
      org.apache.maven.lifecycle.Lifecycle
      org.apache.maven.lifecycle.Lifecycle
      poncy
      
         poncy
         
            poncy
            fancy
         
         
            org.apache.maven.plugins:maven-enforcer-plugin:display-info
            org.codehaus.mojo:build-helper-maven-plugin:parse-version

    Parent pom

    

  4.0.0

  localdomain.localhost
  fancy-lifecycle-parent
  0.1-SNAPSHOT
  pom

  
    poncy-test
    fancy-test

    Fancy-test pom

    

  4.0.0

  localdomain.localhost
  fancy-test
  0.1-SNAPSHOT
  fancy

  
    
      
        localdomain.localhost
        fancy-lifecycle
        0.1-SNAPSHOT

    Poncy-test pom

    

  4.0.0

  localdomain.localhost
  poncy-test
  0.1-SNAPSHOT
  poncy

  
    
      
        localdomain.localhost
        poncy-lifecycle
        0.1-SNAPSHOT

    Some tests

    $ mvn -f pom.xml fancy
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] poncy-test
[INFO] fancy-test
[INFO] fancy-lifecycle-parent
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building poncy-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-enforcer-plugin:1.1.1:display-info (default-display-info) @ poncy-test ---
[INFO] Maven Version: 3.0.4
[INFO] JDK Version: 1.6.0_35 normalized as: 1.6.0-35
[INFO] OS Info: Arch: x86_64 Family: mac Name: mac os x Version: 10.8.1
[INFO] 
[INFO] --- build-helper-maven-plugin:1.7:parse-version (default-parse-version) @ poncy-test ---
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building fancy-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- rpm-maven-plugin:2.1-alpha-2:version (default-version) @ fancy-test ---
[WARNING] rpm version string truncated to 0.1
[INFO] setting [rpm.version] property to value [0.1].
[INFO] setting [rpm.release] property to value [SNAPSHOT20120918152051].
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building fancy-lifecycle-parent 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] poncy-test ........................................ SUCCESS [0.727s]
[INFO] fancy-test ........................................ SUCCESS [0.196s]
[INFO] fancy-lifecycle-parent ............................ SUCCESS [0.001s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.152s
[INFO] Finished at: Tue Sep 18 16:20:51 IST 2012
[INFO] Final Memory: 4M/81M
[INFO] ------------------------------------------------------------------------

    This first test is from the parent pom and everything builds just fine. Notice that the two phases (poncy and fancy's executions are invoked for the poncy-test module but only one phase (fancy) is invoked for the fancy-test module, as you would expect.

    Now try the same only with the poncy phase

    $ mvn poncy
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] poncy-test
[INFO] fancy-test
[INFO] fancy-lifecycle-parent
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building poncy-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-enforcer-plugin:1.1.1:display-info (default-display-info) @ poncy-test ---
[INFO] Maven Version: 3.0.4
[INFO] JDK Version: 1.6.0_35 normalized as: 1.6.0-35
[INFO] OS Info: Arch: x86_64 Family: mac Name: mac os x Version: 10.8.1
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building fancy-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] poncy-test ........................................ SUCCESS [0.588s]
[INFO] fancy-test ........................................ FAILURE [0.033s]
[INFO] fancy-lifecycle-parent ............................ SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.853s
[INFO] Finished at: Tue Sep 18 16:23:27 IST 2012
[INFO] Final Memory: 3M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] Unknown lifecycle phase "poncy". You must specify a valid lifecycle phase or a goal in the format : or :[:]:. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, fancy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[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/LifecyclePhaseNotFoundException

    Notice that we now have a build failure because the phase is unknown for the fancy-test module.

    If we build the parent and poncy-test explicitly all works just fine:

    $ mvn poncy -pl :fancy-lifecycle-parent,:poncy-test
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] poncy-test
[INFO] fancy-lifecycle-parent
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building poncy-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-enforcer-plugin:1.1.1:display-info (default-display-info) @ poncy-test ---
[INFO] Maven Version: 3.0.4
[INFO] JDK Version: 1.6.0_35 normalized as: 1.6.0-35
[INFO] OS Info: Arch: x86_64 Family: mac Name: mac os x Version: 10.8.1
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building fancy-lifecycle-parent 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] poncy-test ........................................ SUCCESS [5.247s]
[INFO] fancy-lifecycle-parent ............................ SUCCESS [0.001s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.488s
[INFO] Finished at: Tue Sep 18 16:24:45 IST 2012
[INFO] Final Memory: 3M/81M
[INFO] ------------------------------------------------------------------------

    And finally, on a positive note, if we add a jar packaging module without the extension defined into the mix, all hell does not break loose:

    $ mvn fancy
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] jar-test
[INFO] poncy-test
[INFO] fancy-test
[INFO] fancy-lifecycle-parent
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building jar-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building poncy-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-enforcer-plugin:1.1.1:display-info (default-display-info) @ poncy-test ---
[INFO] Maven Version: 3.0.4
[INFO] JDK Version: 1.6.0_35 normalized as: 1.6.0-35
[INFO] OS Info: Arch: x86_64 Family: mac Name: mac os x Version: 10.8.1
[INFO] 
[INFO] --- build-helper-maven-plugin:1.7:parse-version (default-parse-version) @ poncy-test ---
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building fancy-test 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- rpm-maven-plugin:2.1-alpha-2:version (default-version) @ fancy-test ---
[WARNING] rpm version string truncated to 0.1
[INFO] setting [rpm.version] property to value [0.1].
[INFO] setting [rpm.release] property to value [SNAPSHOT20120918152733].
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building fancy-lifecycle-parent 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] jar-test .......................................... SUCCESS [0.001s]
[INFO] poncy-test ........................................ SUCCESS [0.809s]
[INFO] fancy-test ........................................ SUCCESS [0.198s]
[INFO] fancy-lifecycle-parent ............................ SUCCESS [0.001s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.244s
[INFO] Finished at: Tue Sep 18 16:27:33 IST 2012
[INFO] Final Memory: 4M/81M
[INFO] ------------------------------------------------------------------------

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