Why is Maven downloading from the wrong repository? - maven

Question

I'm a newbie to Maven. I'm trying to setup a local Archiva 1.3.6 server to act as a repository server for a project's internal artifact, as well as mirror to external repos. Things work fine except for snapshots. I'm using Maven version 3.0.5.
Here are the mirror settings in my settings.xml file
<mirrors>
<mirror>
<id>internal</id>
<mirrorOf>external:*</mirrorOf>
<name>My Maven Repository</name>
<url>http://my.repo.server:9000/archiva/repository/internal/</url>
</mirror>
</mirrors>
During the build, Maven tries to download the snapshot artifact from the wrong repository. I have 2 repositories set in the parent's parent pom.xml: internal and snapshots.
<repositories>
<repository>
<id>internal</id>
<url>http://my.repo.server:9000/archiva/repository/internal/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>snapshots</id>
<url>http://my.repo.server:9000/archiva/repository/snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
In the project's pom.xml I have the following dependency:
<dependency>
<groupId>com.mygroup</groupId>
<artifactId>metadata-framework</artifactId>
<version>1.0.3.SNAPSHOT</version>
</dependency>
During the build Maven tries to do this:
Downloading:
.../archiva/repository/**snapshots**/com/mygroup/metadata-framework/1.0.3.SNAPSHOT/maven-metadata.xml
Downloaded:
.../archiva/repository/**snapshots**/com/mygroup/metadata-framework/1.0.3.SNAPSHOT/maven-metadata.xml (795 B at 16.9 KB/sec)
Downloading:
.../archiva/repository/**internal**/com/mygroup/metadata-framework/1.0.3.20130908.081541-1/cems-metadata-framework-1.0.3.20130908.081541-1.pom
[WARNING] The POM for com.myground:metadata-framework:jar:1.0.3.20130908.081541-1 is missing, no dependen
cy information available
I verified the files in snapshot repo is correct, that it has properly generated maven-metadata.xml and etc. it appears that Maven downloaded the metadata correctly from snapshot repo, determined the right timestamped version, but somehow it decided to download the actual file from internal repo instead of snapshots, which lead to 404 and failed build.
I have no idea how Maven works, please help.

Answer 1

#lee - Here's how I download custom artifacts from an internal snapshots repo within Archiva. I use this config every day.
settingsl.xml:
Let's say I have a virtual repo named "help".
help is comprised of outside-facing repos and 2 internal-facing repos. Those 2 internal-facing repos are:
help-internal
help-snapshots
Under the <mirrors> section, I declare:
<mirror>
<id>help</id>
<mirrorOf>*, !help-snapshots</mirrorOf>
<name>The Help Repository</name>
<url>http://blah:8080/archiva/repository/help/</url>
</mirror>
Under the <servers> section, I declare:
<server>
<id>help</id>
<username>my_user_name</username>
<password>{my_encrypted_pwd}</password>
</server>
<server>
<id>help-snapshots</id>
<username>my_user_name</username>
<password>{my_encrypted_pwd}</password>
</server>
And now the final bit. In my projects' pom's that use in-house snapshots, I include this:
<repositories>
<repository>
<id>help-snapshots</id>
<url>http://blah:8080/archiva/repository/help-snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>

Answer 2

More concisely, and without modifying any pom.xml, you could define an all repository group in archiva which contains both internal and snapshots, and then add the following in your .m2/settings.xml:
<mirrors>
<mirror><id>myGroup</id><mirrorOf>*</mirrorOf>
<url>http://my.repo.server:9000/archiva/repository/all/</url>
</mirror>
</mirrors>
<profiles>
<profile><id>alwaysactive</id>
<activation><activeByDefault>true</activeByDefault></activation>
<repositories>
<repository><id>unused</id><url>unused</url></repository>
</repositories>
</profile>
<profiles>

Answer 3

I know this post is old by in order for maven to search in a snapshot repository the version should end with "-SNAPSHOT" (rather than ".SNAPSHOT")