I'm trying to integrate Maven into a STAF [1] service using the
embedder (the latest 2.1 snapshot).
During startup, the embedder gives me this exception:
org.apache.maven.embedder.MavenEmbedderException: Cannot lookup
required component.
at org.apache.maven.embedder.MavenEmbedder.start(MavenEmbedder.java:647)
at
org.apache.maven.embedder.MavenEmbedder.<init>(MavenEmbedder.java:194)
at com.agfa.staf.MyStafService.createEmbedder(MyStafService.java:149)
at com.agfa.staf.MyStafService.resolveArtifact(MyStafService.java:156)
at com.agfa.staf.MyStafService.handleRegister(MyStafService.java:63)
at com.agfa.staf.MyStafService.acceptRequest(MyStafService.java:44)
at
com.ibm.staf.service.STAFServiceHelper.callService(STAFServiceHelper.java:349)
Caused by:
org.codehaus.plexus.component.repository.exception.ComponentLookupException:
Component descriptor cannot be found in the component reposito
ry: org.apache.maven.Maven [default] (lookup realm:
ClassRealm[plexus.core, parent: null]).
at
org.codehaus.plexus.DefaultComponentLookupManager.lookup(DefaultComponentLookupManager.java:139)
at
org.codehaus.plexus.DefaultComponentLookupManager.lookup(DefaultComponentLookupManager.java:69)
at
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:247)
at
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:241)
at org.apache.maven.embedder.MavenEmbedder.start(MavenEmbedder.java:595)
... 6 more
The code that starts the embedder looks like this:
Configuration configuration = new DefaultConfiguration();
ClassLoader loader = MavenEmbedder.class.getClassLoader();
configuration.setClassLoader(loader);
configuration.setMavenEmbedderLogger(new
MavenEmbedderConsoleLogger());
ConfigurationValidationResult validation = MavenEmbedder
.validateConfiguration(configuration);
if (!validation.isValid()) {
throw new RuntimeException("Not valid");
}
MavenEmbedder embedder = new MavenEmbedder(configuration);
This code works when I run it in a normal environment (both my code
and the embedder on the CLASSPATH) but fails with the above exception
when running it as a STAF service. The difference between these
environments is that the STAF service has a special classloader. A
STAF service jar looks like this:
/STAF-INF/classes: contains classes
/STAF-INF/jars: contains extra libs ( maven-embedder.jar )
This is the classloader used:
http://staf.cvs.sourceforge.net/staf/src/staf/lang/java/service/STAFServiceJarClassLoader.java?revision=1.14&view=markup
Does anybody know what the problem is here ? Does the embedder or
Plexus expect its code in an ordinary jar ?
Tom
[1] Software Testing Automation Framework at
http://staf.sourceforge.net/index.php
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