feat: make edc-build register printClasspath plugin

plugins/edc-build/src/main/java/org/eclipse/edc/plugins/edcbuild/EdcBuildPlugin.java

@@ -30,6 +30,7 @@
 import static org.eclipse.edc.plugins.edcbuild.conventions.Conventions.mavenPublication;
 import static org.eclipse.edc.plugins.edcbuild.conventions.Conventions.mavenPublishing;
 import static org.eclipse.edc.plugins.edcbuild.conventions.Conventions.nexusPublishing;
+import static org.eclipse.edc.plugins.edcbuild.conventions.Conventions.printClasspath;
 import static org.eclipse.edc.plugins.edcbuild.conventions.Conventions.repositories;
 import static org.eclipse.edc.plugins.edcbuild.conventions.Conventions.rootBuildScript;
 import static org.eclipse.edc.plugins.edcbuild.conventions.Conventions.signing;
@@ -74,7 +75,8 @@ public void apply(Project target) {
                     allDependencies(),
                     tests(),
                     jar(),
-                    swagger()
+                    swagger(),
+                    printClasspath()
             ).forEach(c -> c.apply(project));
         });
 

plugins/edc-build/src/main/java/org/eclipse/edc/plugins/edcbuild/conventions/Conventions.java

@@ -23,7 +23,6 @@ public static EdcConvention checkstyle() {
         return new CheckstyleConvention();
     }
 
-
     public static EdcConvention mavenPublishing() {
         return new MavenPublishingConvention();
     }
@@ -87,4 +86,8 @@ public static EdcConvention openApiMerger() {
     public static EdcConvention mavenPublication() {
         return new MavenPublicationConvention();
     }
+
+    public static EdcConvention printClasspath() {
+        return new PrintClasspathConvention();
+    }
 }

plugins/edc-build/src/main/java/org/eclipse/edc/plugins/edcbuild/conventions/PrintClasspathConvention.java

@@ -0,0 +1,26 @@
+/*
+ *  Copyright (c) 2024 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Contributors:
+ *       Bayerische Motoren Werke Aktiengesellschaft (BMW AG) - initial API and implementation
+ *
+ */
+
+package org.eclipse.edc.plugins.edcbuild.conventions;
+
+import org.eclipse.edc.plugins.edcbuild.tasks.PrintClasspathTask;
+import org.gradle.api.Project;
+
+public class PrintClasspathConvention implements EdcConvention {
+    @Override
+    public void apply(Project target) {
+        target.getTasks().register("printClasspath", PrintClasspathTask.class)
+                .configure(t -> t.dependsOn("compileJava"));
+    }
+}

plugins/edc-build/src/main/java/org/eclipse/edc/plugins/edcbuild/tasks/PrintClasspathTask.java

@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) 2024 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Contributors:
+ *       Bayerische Motoren Werke Aktiengesellschaft (BMW AG) - initial API and implementation
+ *
+ */
+
+package org.eclipse.edc.plugins.edcbuild.tasks;
+
+import org.gradle.api.DefaultTask;
+import org.gradle.api.plugins.JavaPluginExtension;
+import org.gradle.api.tasks.TaskAction;
+
+import static org.eclipse.edc.plugins.edcbuild.conventions.ConventionFunctions.requireExtension;
+
+
+public class PrintClasspathTask extends DefaultTask {
+
+    @TaskAction
+    public void printClasspath() {
+        var classpath = requireExtension(getProject(), JavaPluginExtension.class)
+                .getSourceSets()
+                .getByName("main")
+                .getRuntimeClasspath()
+                .getAsPath();
+
+        System.out.println(classpath);
+    }
+
+}