How to make the Maven Deploy Plugin only upload a specific file?

Question

I want to add two zips to an already published version in Nexus.
Essentially, they are a zipped up demo of the application and an extended version of the same application, also zipped.

Using the Deploy plugin, I defined two executions in my pom, one for each file and bound them to the deploy phase. Here's the one for the demo:

<execution>
   <id>deploy-essential</id>
      <phase>deploy</phase>
      <goals>
         <goal>deploy-file</goal>
      </goals>
      <configuration>
         <file>${project.build.directory}/${project.artifactId}-${project.version}-demo.zip</file>
         <groupId>${project.groupId}</groupId>
         <artifactId>myproject</artifactId>
         <version>${project.version}</version>
         <classifier>demo</classifier>
         <repositoryId>nexus</repositoryId>
         <url>${targetrepository}</url>
         <generatePom>false</generatePom>
      </configuration>
   </execution>

I expected Maven to upload the file and update the metadata tothe given G/A/V coordinates when this execution comes up. Instead, though, it uploads the given file and it's sister file containing the full version to the given coordinates and then uploads both of them again to their original coordinates.

It then goes on to do all of this again for the second execution. Here's an excerpt from my log:

[INFO] --- maven-deploy-plugin:2.7:deploy-file (deploy-demo) @ bundle ---
Downloading: http://nexus/repositories/snapshots/mygroup/myproject/1.2.6-SNAPSHOT/maven-metadata.xml
2 KB   

Downloaded: http://nexus/repositories/snapshots/mygroup/myproject/1.2.6-SNAPSHOT/maven-metadata.xml (2 KB at 4.8 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/myproject/1.2.6-SNAPSHOT/myproject-1.2.6-20121130.102624-5-demo.zip
...           
Uploaded: http://nexus/repositories/snapshots/mygroup/myproject/1.2.6-SNAPSHOT/myproject-1.2.6-20121130.102624-5-demo.zip (13032 KB at 23105.2 KB/sec)
Downloading: http://nexus/repositories/snapshots/mygroup/myproject/maven-metadata.xml
533 B      

Downloaded: http://nexus/repositories/snapshots/mygroup/myproject/maven-metadata.xml (533 B at 34.7 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/myproject/1.2.6-SNAPSHOT/maven-metadata.xml
2 KB    

Uploaded: http://nexus/repositories/snapshots/mygroup/myproject/1.2.6-SNAPSHOT/maven-metadata.xml (2 KB at 89.4 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/myproject/maven-metadata.xml
533 B   

Uploaded: http://nexus/repositories/snapshots/mygroup/myproject/maven-metadata.xml (533 B at 32.5 KB/sec)
Downloading: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/maven-metadata.xml
861 B   

Downloaded: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/maven-metadata.xml (861 B at 3.8 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/bundle-1.2.6-20121130.102625-3-full.zip
...           
Uploaded: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/bundle-1.2.6-20121130.102625-3-full.zip (13065 KB at 18531.7 KB/sec)
Downloading: http://nexus/repositories/snapshots/mygroup/bundle/maven-metadata.xml
410 B      

Downloaded: http://nexus/repositories/snapshots/mygroup/bundle/maven-metadata.xml (410 B at 8.5 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/maven-metadata.xml
861 B   

Uploaded: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/maven-metadata.xml (861 B at 27.1 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/bundle/maven-metadata.xml
410 B   

Uploaded: http://nexus/repositories/snapshots/mygroup/bundle/maven-metadata.xml (410 B at 5.1 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/bundle-1.2.6-20121130.102625-3-demo.zip
...           
Uploaded: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/bundle-1.2.6-20121130.102625-3-demo.zip (13032 KB at 13631.1 KB/sec)
Uploading: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/maven-metadata.xml
861 B      

Uploaded: http://nexus/repositories/snapshots/mygroup/bundle/1.2.6-SNAPSHOT/maven-metadata.xml (861 B at 56.1 KB/sec)

This is not a big thing for SNAPSHOTs, but it completely blocks releases since Nexus is configured to reject redeployments.

I don't think this behaviour is intended, and I am sure I missing something. Can I somehow get Maven to only upload the file I actually configured?

Answer 1

Because you didn't disable the default deploy mechanism, it is still being executed. You need something like this:

        <plugin>
            <artifactId>maven-deploy-plugin</artifactId>
            <executions>
                <!-- disable standard deploy -->
                <execution>
                    <id>default-deploy</id>
                    <phase>none</phase>
                </execution>
                <execution>
                    <id>deployEssential</id>
                    <phase>deploy</phase>
                    ...
                </execution>
            </executions>
        </plugin>