[RFE] new goals "listFeatures" and "listAllFeatures"

[bmarwell]

Hi, I think a goal like this might be helpful:

listFeatures

Lists all features available in the currently downloaded wlp / ol package.
Effectively calls:

./bin/featureManager featureList ${tempfile}.xml

The file should be stored in a configured location which has a sensible default.

listAllFeatures

Downloads the features json file from the configured repository.

• uses com/ibm/websphere/appserver/features/features/24.0.0.6/features-24.0.0.6.json when IBM Liberty Profile (wlp) is used
• uses io/openliberty/features/features/24.0.0.6/features-24.0.0.6.json otherwise
• uses Maven settings, not the featureManager/featureUtility
• unless a file ./etc/featureUtility.properties was provided -- then featureUtility is used or at least the configured mirrors

Will create the same file as above but with all available features.

optional settings/features

• Create a text file with just the listed feature names, so inter-dependencies and conflicts between features are omitted.
• listAllFeatures with an all-GA-features-package (this package is only available for OL if I am not mistaken).
• configuration option outputFeaturesFile, e.g. to strip the version number.
• Should obey artifact if given.
• May be useful in conjunction with schemaGen utility (not implemented in this plugin).

Let me know what you think. 😊
No priority here, but I think this might be useful.

[bmarwell]

Quick workaround using three maven plugins and additional resource directories:

  <build>
    <resources>
      <resource>
        <directory>src/main/resources</directory>
      </resource>
      <resource>
        <directory>${generate.resources.liberty}</directory>
      </resource>
    </resources>
    <plugins>
      <plugin>
        <groupId>io.openliberty.tools</groupId>
        <artifactId>liberty-maven-plugin</artifactId>
        <configuration>
          <serverName>cfggenerator</serverName>
          <features>
            <acceptLicense>true</acceptLicense>
          </features>
        </configuration>
        <executions>
          <execution>
            <id>liberty-install</id>
            <goals>
              <goal>install-server</goal>
            </goals>
            <phase>generate-resources</phase>
          </execution>
        </executions>
      </plugin>

      <plugin>

        <artifactId>maven-antrun-plugin</artifactId>
        <executions>
          <execution>
            <id>generate-sources</id>
            <goals>
              <goal>run</goal>
            </goals>
            <phase>generate-sources</phase>
            <configuration>
              <target>
                <mkdir dir="${wlpFeatures.output.directory}" />
              </target>
            </configuration>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>generate-liberty-wlpFeatures</id>
            <goals>
              <goal>exec</goal>
            </goals>
            <phase>generate-resources</phase>
            <configuration>
              <forceJava>true</forceJava>
              <executable>java</executable>
              <arguments>
                <argument>--add-opens</argument>
                <argument>java.base/java.lang=ALL-UNNAMED</argument>
                <argument>--add-exports</argument>
                <argument>java.base/sun.security.action=ALL-UNNAMED</argument>
                <!-- add-exports openjceplus/com.ibm.misc=ALL-UNNAMED -->
                <argument>-Dfile.encoding=UTF-8</argument>
                <argument>-Djava.awt.headless=true</argument>
                <argument>-jar</argument>
                <argument>${build.directory}/liberty/bin/tools/ws-featureManager.jar</argument>
                <argument>featureList</argument>
                <argument>${wlpFeatures.output.directory}/features.xml</argument>
              </arguments>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

The file can then be read by any class. The call is actually just taken from featureManager sh script.