Maven 3 Archetypes

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Last updated: Apr 08, 2021 by S. Ali Tokmen
6 min read

Maven 3 Archetypes

Maven 3 has a powerful feature called Archetype.

As part of the Cargo project we have created some archetypes that you can use to get a working sample project that uses the Cargo Maven 3 plugin.

Single Webapp Module Archetype

This is the most basic example, showing how to configure Cargo and Maven 3 to run functional tests directly from a single webapp module. To run it, execute (one one line):

 mvn archetype:generate -DarchetypeGroupId=org.codehaus.cargo
                        -DarchetypeArtifactId=cargo-archetype-webapp-single-module
                        -DarchetypeVersion=<version>

where <version> is the version of the Cargo Archetype, as a result the Codehaus Cargo version to use.

The Maven 3 archetype plugin will then ask you what groupId, artifactId, version, and package you would like to use for generation. Once your Maven 3 project is generated, simply run:

 mvn clean verify

That command will:

  • Build the web application
  • If needed, download Jetty
  • Configure Jetty
  • Start the Jetty container
  • Deploy your web application to the Jetty container
  • Run some tests on the deployed application
    • We've used classic JUnit tests, but you can use whatever you like, really
  • Stop the Jetty container

That archetype also demonstrates another powerful feature of Codehaus Cargo coupled with Maven 3. If you now run:

 mvn clean verify -P tomcat9x

the same steps will be done with Tomcat instead of Jetty; thanks to Maven 3's profiles.

The archetype actually ships with Maven 3 profiles for the jetty9x (default), jetty10x, tomcat9x, jonas5x, jboss71x, glassfish5x, geronimo3x and wildfly21x containers. We tried to show with these archetypes as many examples as possible, so you will find that:

You can of course add and use any other container from the Containers list.

Separate Functional Test Module Archetype

Shows how to configure Cargo and Maven 3 to run functional tests by creating a functional tests module next to the webapp module. To run it, execute (one one line):

 mvn archetype:generate -DarchetypeGroupId=org.codehaus.cargo
                        -DarchetypeArtifactId=cargo-archetype-webapp-functional-tests-module
                        -DarchetypeVersion=<version>

where <version> is the version of the Cargo Archetype, as a result the Codehaus Cargo version to use.

The remaining instructions for this archetype remain the same as the Single Webapp Module Archetype archetype.

DataSource Definition Archetype

Shows how to configure Cargo and Maven 3 to for a more complex setup, in particular with DataSource definitions. This includes:

  • Definition of an Apache Derby DataSource in the container's configuration
  • Adding in the Apache Derby driver to the container

Of course, the same kind of setup works for any other DataSource provider and driver.

To run it, execute (one one line):

 mvn archetype:generate -DarchetypeGroupId=org.codehaus.cargo
                        -DarchetypeArtifactId=cargo-archetype-webapp-with-datasource
                        -DarchetypeVersion=<version>

where <version> is the version of the Cargo Archetype, as a result the Codehaus Cargo version to use.

The overall remaining instructions for this archetype remain the same as the Single Webapp Module Archetype archetype, with the following differences:

As in the other examples, what's interesting to see is that the DataSource definition on Codehaus Cargo remains the same even if you switch container; as Codehaus Cargo handles all the container-specific DataSource setup steps.

Archetype showing the starting and stopping of multiple containers simultaneously

Shows how to configure the various Maven capabilities together with the Codehaus Cargo Ant tasks in order to be able of starting (and stopping) multiple containers at the same time. To run it, execute (one one line):

 mvn archetype:generate -DarchetypeGroupId=org.codehaus.cargo
                        -DarchetypeArtifactId=cargo-archetype-multiple-containers
                        -DarchetypeVersion=<version>

where <version> is the version of the Cargo Archetype, as a result the Codehaus Cargo version to use.

Webapp Creation and Remote Deployment Archetype

This example shows you how to use Cargo to deploy your webapp to a running container remotely and perform integration tests on it. That container can therefore be running on any machine. To run it, execute (one one line):

 mvn archetype:generate -DarchetypeGroupId=org.codehaus.cargo
                        -DarchetypeArtifactId=cargo-archetype-remote-deployment
                        -DarchetypeVersion=<version>

where <version> is the version of the Cargo Archetype, as a result the Codehaus Cargo version to use.

Once your Maven 3 project is generated, simply run:

 mvn clean verify

That command will:

  • Build the web application
  • Connect to the remote Tomcat manager
  • Deploy your application
  • Run integration tests to verify that the application is running file
    • We've used classic JUnit tests, but you can use whatever you like, really
  • Undeploy your application

This archetype supports the following properties that can be changed by passing -DpropertyName=propertyValue arguments to the mvn command:

  • servlet.port changes the target servlet port, the archetype sets it to 8080
  • hostname changes the target servlet's hostname, the archetype sets it to localhost
  • username sets the username, the archetype sets it to admin
  • password sets the password, the archetype sets it to an empty password

This archetype ships with Maven 3 profiles for the following containers:

Daemon Archetype

Shows how to configure Cargo and Maven 3 to use the Cargo Daemon's features in order to remotely start the container, deploy your deployable on it, do some tests, and shut the server down remotely. To run it, execute (one one line):

 mvn archetype:generate -DarchetypeGroupId=org.codehaus.cargo
                        -DarchetypeArtifactId=cargo-archetype-daemon
                        -DarchetypeVersion=<version>

where <version> is the version of the Cargo Archetype, as a result the Codehaus Cargo version to use.

The Maven 3 archetype plugin will then ask you what groupId, artifactId, version, and package you would like to use for generation. Once your Maven 3 project is generated, you need to first start the Cargo Daemon. Then, simply run:

 mvn clean verify -Dhostname=<daemon.hostname> -Ddaemon.port=<daemon.port>

where <daemon.hostname> is the hostname / IP address of the machine running the Cargo Daemon and <daemon.port> the port for it.That command will:

  • Build the web application
  • If needed, download the container to start on the Cargo Daemon
  • Send the downloaded container package to the remote Cargo Daemon instance
  • Configure the container on the machine running the Cargo Daemon
  • Start the container on the machine running the Cargo Daemon
  • Deploy your web application to the container on the machine running the Cargo Daemon
  • Run some tests on the deployed application
    • We've used classic JUnit tests, but you can use whatever you like, really
  • Stop the container on the machine running the Cargo Daemon

The archetype actually ships with Maven 3 profiles for the jetty9x (default), tomcat9x, jonas5x, jboss71x, glassfish5x, geronimo3x and wildfly21x containers.

You can of course add and use any other container from the Containers list.