Hello,
I'm having difficulties getting the maven-archetype-plug-in to work with a
local repository. The problem seems to be that it cannot locate the RELEASE
version of this plugin when given a local repository. I've copied the error I
get to the end of this email together with my settings.xml file. I have tried
various configurations and workarounds. I have maven configured to
<mirrorOf>*</mirrorOf> which points to my local repo and I have tried combining
this with a profile that uses this mirror for a <pluginRepository> to no avail.
The only workaround which works for me is to specify the fully qualified
archetype command which locks down the version of both the archetype plugin and
the archetype rather than using the metadata to determine the RELEASE versions:
e.g.
mvn org.apache.maven.plugins:maven-archetype-plugin:2.0-alpha-4:create
-DartifactId=new-proj -DgroupId=org.mycompany -DpackageId=org.mycompany
-DarchetypeVersion=1.0
This is executed in a directory that does not have a pom.xml file. I can get
the list of available archetypes from the generate goal if I execute mvn
archetype:generate in a directory that has a pom.xml, which defines the plugin
and its version as a build dependency, but then it bombs out when I select an
archetype because it cannot find the RELEASE version of that archetype (even
though it exists in the local repo).
Now, as far as I can see, the metadata in my internal repository matches the
metadata in central so I'm struggling to see what's going wrong. I should note
that my internal repository is generated by running the archetype and other
plugins in an environment with access to central and then I copy the local repo
from .m2 into another folder which acts as an internal repository. Does this
method not provide appropriate metadata or is Maven for some reason always
going to Central to determine the release version of this plugin? I should
note that I have also tried the -DremoteRepositories=file://<local-repo-dir>
flag but this doesn't seem to have much effect.
This behavior is consistent in Maven 2.0.9/Archetype plugin 2.0-alpha-4 and
Maven 2.1.0-M1. I have read various FAQs and bug reports about this being fixed
but I'm still having difficulties so I'd be grateful for some suggestions or a
working configuration.
Here's the config I've tried thus far:
My settings.xml (I get the same failure case when the profile is switched off
or commented and have tried both direct/indirect urls in the profile repository
<url>'s):
<mirror>
<id>mirrorId</id>
<mirrorOf>*</mirrorOf>
<name>Human Readable Name for this Mirror.</name>
<url>file://C:/<local-repo-dir></url>
</mirror>
<profile>
<id>internal-repo</id>
<repositories>
<repository>
<id>central-repo</id>
<url>http://dummy-url</url>
<!-- <url>file:///C:/<local-repo-dir></url> -->
<releases>
<enabled>true</enabled>
<updatePolicy/>
<checksumPolicy/>
</releases>
<snapshots>
<enabled>true</enabled>
<updatePolicy/>
<checksumPolicy/>
</snapshots>
<layout/>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>central-plugin-repo</id>
<url>http://dummy-url</url>
<!-- <url>file:///C:/<local-repo-dir></url> -->
<releases>
<enabled>true</enabled>
<updatePolicy/>
<checksumPolicy/>
</releases>
<snapshots>
<enabled>true</enabled>
<updatePolicy/>
<checksumPolicy/>
</snapshots>
<layout/>
</pluginRepository>
</pluginRepositories>
</profile>
Here's the error:
----------------------------------
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'archetype'.
[DEBUG] Loading plugin prefixes from group: org.apache.maven.plugins
[INFO] org.apache.maven.plugins: checking for updates from central-plugin-repo
[DEBUG] repository metadata for: 'org.apache.maven.plugins' could not be found
on repository: central-plugin-repo
[INFO] org.apache.maven.plugins: checking for updates from central
[DEBUG] repository metadata for: 'org.apache.maven.plugins' could not be found
on repository: central
[DEBUG] Loading plugin prefixes from group: org.codehaus.mojo
[INFO] org.codehaus.mojo: checking for updates from central-plugin-repo
[DEBUG] repository metadata for: 'org.codehaus.mojo' could not be found on
repository: central-plugin-repo
[INFO] org.codehaus.mojo: checking for updates from central
[DEBUG] repository metadata for: 'org.codehaus.mojo' could not be found on
repository: central
[INFO] artifact org.apache.maven.plugins:maven-archetype-plugin: checking for
updates from central-plugin-repo
[DEBUG] repository metadata for: 'artifact
org.apache.maven.plugins:maven-archetype-plugin' could not be found on
repository: central-plugin-repo
[INFO] artifact org.apache.maven.plugins:maven-archetype-plugin: checking for
updates from central
[DEBUG] repository metadata for: 'artifact
org.apache.maven.plugins:maven-archetype-plugin' could not be found on
repository: central
[DEBUG] maven-archetype-plugin: using locally installed snapshot
[DEBUG] Artifact not found - using stub model: Unable to determine the latest
version
org.apache.maven.plugins:maven-archetype-plugin:pom:LATEST
[DEBUG] Using defaults for missing POM
org.apache.maven.plugins:maven-archetype-plugin:pom:LATEST
[DEBUG] maven-archetype-plugin: using locally installed snapshot
[DEBUG] Artifact not found - using stub model: Unable to determine the release
version
org.apache.maven.plugins:maven-archetype-plugin:pom:RELEASE
[DEBUG] Using defaults for missing POM
org.apache.maven.plugins:maven-archetype-plugin:pom:RELEASE
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] The plugin 'org.apache.maven.plugins:maven-archetype-plugin' does not
exist or no valid version could be found
[INFO] ------------------------------------------------------------------------
[DEBUG] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: The plugin
'org.apache.maven.plugins:maven-archetype-plugin' does not exist or no valid
version could be found
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1303)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1542)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:405)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:137)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.version.PluginVersionNotFoundException: The
plugin 'org.apache.maven.plugins:maven-archetype-plugin' does not exist or no
valid version could be found
at
org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:229)
at
org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:91)
at
org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:171)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1274)
... 14 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Sat Jan 17 12:09:10 GMT 2009
[INFO] Final Memory: 2M/30M
[INFO] ------------------------------------------------------------------------
---------------------------------------------------
In my local repository within the
.m2\repository\org\apache\maven\plugins\maven-archetype-plugin directory, Maven
creates two files for both of the repositories in the profile, here's the
output for maven-metadata-central-plugin-repo.xml (this output is identical in
the other xml file):
<?xml version="1.0" encoding="UTF-8"?><metadata>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-archetype-plugin</artifactId>
</metadata>
In the directory above (.m2\repository\org\apache\maven\plugins) the same xml
file is generated with this output:
<?xml version="1.0" encoding="UTF-8"?><metadata />
I'd be most grateful for any comments because while I have something working,
it would be more comforting to have it working in a manner where it can
determine the RELEASE version automatically from my internal repository.
Regards,
Ross.
