[SLING-10416] feature-launcher-maven-plugin:start does not work with m2e

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: Feature Launcher Maven Plugin 0.1.0
• Component/s: Feature Model, Tooling
• Assignee: Konrad Windszus
• Reporter: Konrad Windszus
• Created: 25/May/21 06:54
• Updated: 25/May/21 07:36
• Resolved: 25/May/21 07:14

Description

When trying to execute feature-launcher-maven-plugin:start from within Eclipse (with the embedded Maven runtime used in m2e) I run into the following exception:

[ERROR] Failed to execute goal org.apache.sling:feature-launcher-maven-plugin:0.1.0:start (default) on project org.apache.sling.starter: Cannot run program "null/bin/java" (in directory "/Users/konradwindszus/git/sling/sling-org-apache-sling-starter/target/launchers"): error=2, No such file or directory -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.sling:feature-launcher-maven-plugin:0.1.0:start (default) on project org.apache.sling.starter: Cannot run program "null/bin/java" (in directory "/Users/konradwindszus/git/sling/sling-org-apache-sling-starter/target/launchers"): error=2, No such file or directory
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:215)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
	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:957)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:289)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:193)
	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)
Caused by: org.apache.maven.plugin.MojoExecutionException: Cannot run program "null/bin/java" (in directory "/Users/konradwindszus/git/sling/sling-org-apache-sling-starter/target/launchers"): error=2, No such file or directory
	at org.apache.sling.maven.feature.launcher.StartMojo.execute(StartMojo.java:174)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
	... 20 more
Caused by: java.io.IOException: Cannot run program "null/bin/java" (in directory "/Users/konradwindszus/git/sling/sling-org-apache-sling-starter/target/launchers"): error=2, No such file or directory
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
	at org.apache.sling.maven.feature.launcher.StartMojo.execute(StartMojo.java:142)
	... 22 more
Caused by: java.io.IOException: error=2, No such file or directory
	at java.lang.UNIXProcess.forkAndExec(Native Method)
	at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
	at java.lang.ProcessImpl.start(ProcessImpl.java:134)
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
	... 23 more

Determining JAVA_HOME should be more resilient to be able to deal with that case.

Issue Links

• duplicates: SLING-9843 fallback to java.home system property if JAVA_HOME env variable is not set
• is related to: SLING-9843 fallback to java.home system property if JAVA_HOME env variable is not set