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Posted to issues@maven.apache.org by "Alexey Venderov (Jira)" <ji...@apache.org> on 2023/02/06 11:27:00 UTC
[jira] [Created] (MNG-7679) Build fails when executing a single mojo without having a POM
Alexey Venderov created MNG-7679:
------------------------------------
Summary: Build fails when executing a single mojo without having a POM
Key: MNG-7679
URL: https://issues.apache.org/jira/browse/MNG-7679
Project: Maven
Issue Type: Bug
Components: Core
Affects Versions: 4.0.0-alpha-4, 3.9.0, 3.8.x-candidate, 3.9.1-candidate
Environment: Linux, MacOS, Windows
Reporter: Alexey Venderov
Hi,
When invoking a single mojo, for example, {{{}install:install-file{}}}, outside of the project directory (no pom in the directory), then the build is failing with {{{}NullPointerException{}}}.
Steps to reproduce:
# Download maven 3.9: [https://dlcdn.apache.org/maven/maven-3/3.9.0/binaries/apache-maven-3.9.0-bin.zip]
# Unzip it to any directory
# Create a simple text file {{echo "foo" > foo.txt}}
# Try to install {{foo.txt}} into the local repository: {{./apache-maven-3.9.0/bin/mvn install:install-file -Dfile=foo.txt -DgroupId=com.example -DartifactId=foo -Dversion=1.0.0 -Dpackaging=jar -X}}
Build fails with the {{{}NullPointerException{}}}:
{code:java}
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.086 s
[INFO] Finished at: 2023-02-06T11:48:49+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] NullPointerException
java.lang.NullPointerException
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getProjectAndSubModules (LifecycleDependencyResolver.java:102)
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getProjects (LifecycleDependencyResolver.java:93)
at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:395)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:327)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:260)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:172)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:100)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:821)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:270)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:566)
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]
{code}
The same operation is successful when using maven 3.8.7 or earlier:
{code:java}
🕙 11:56:50 ➜ mvn --version
Apache Maven 3.8.7 (b89d5959fcde851dcb1c8946a785a163f14e1e29)
Maven home: /Users/avenderov/.sdkman/candidates/maven/current
Java version: 11.0.17, vendor: Azul Systems, Inc., runtime: /Users/avenderov/.asdf/installs/java/zulu-11.60.19/zulu-11.jdk/Contents/Home
Default locale: en_DE, platform encoding: UTF-8
OS name: "mac os x", version: "12.6.3", arch: "aarch64", family: "mac"
~/tmp/maven-npe 250ms
🕙 11:56:54 ➜ mvn install:install-file -Dfile=foo.txt -DgroupId=com.example -DartifactId=foo -Dversion=1.0.0 -Dpackaging=jar
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------< org.apache.maven:standalone-pom >-------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] --- maven-install-plugin:2.4:install-file (default-cli) @ standalone-pom ---
[INFO] Installing /Users/avenderov/tmp/maven-npe/foo.txt to /Users/avenderov/.m2/repository/com/example/foo/1.0.0/foo-1.0.0.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.152 s
[INFO] Finished at: 2023-02-06T11:57:12+01:00
[INFO] ------------------------------------------------------------------------
{code}
It's also possible to reproduce the issue with the development version of maven.
# Checkout maven sources.
# Build a new distribution from {{{}master{}}}: {{mvn -DdistributionTargetDir="$HOME/tmp/maven-npe/apache-maven-4.0.x-SNAPSHOT" clean package}}
# Repeat steps 3 and 4 from the instruction above. The build fails with the {{NullPointerException}}
The issue was introduced with the changes from this ticket: https://issues.apache.org/jira/browse/MNG-7672. I tried to build a distribution from this commit {{[https://github.com/apache/maven/commit/4a3c201bfc9ae492c35e300177d950c10e788bd3]}} and it works as expected (the same applies for other branches, {{maven-3.9.x}} and {{{}master{}}}):
{code:java}
12:18:03 ➜ ./apache-maven-3.8.x-SNAPSHOT/bin/mvn --version
Apache Maven 3.8.8-SNAPSHOT (4a3c201bfc9ae492c35e300177d950c10e788bd3)
Maven home: /Users/avenderov/tmp/maven-npe/apache-maven-3.8.x-SNAPSHOT
Java version: 11.0.17, vendor: Azul Systems, Inc., runtime: /Users/avenderov/.asdf/installs/java/zulu-11.60.19/zulu-11.jdk/Contents/Home
Default locale: en_DE, platform encoding: UTF-8
OS name: "mac os x", version: "12.6.3", arch: "aarch64", family: "mac"
~/tmp/maven-npe 359ms
🕙 12:18:16 ➜ ./apache-maven-3.8.x-SNAPSHOT/bin/mvn install:install-file -Dfile=foo.txt -DgroupId=com.example -DartifactId=foo -Dversion=1.0.0 -Dpackaging=jar
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------< org.apache.maven:standalone-pom >-------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] --- maven-install-plugin:2.4:install-file (default-cli) @ standalone-pom ---
[INFO] Installing /Users/avenderov/tmp/maven-npe/foo.txt to /Users/avenderov/.m2/repository/com/example/foo/1.0.0/foo-1.0.0.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.150 s
[INFO] Finished at: 2023-02-06T12:18:32+01:00
[INFO] ------------------------------------------------------------------------
{code}
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