Add optional dependencies to plugin descriptors and plugin center dto

scm-core/src/main/java/sonia/scm/plugin/AvailablePluginDescriptor.java

@@ -21,12 +21,14 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-    
+
 package sonia.scm.plugin;
 
 import java.util.Optional;
 import java.util.Set;
 
+import static java.util.Collections.emptySet;
+
 /**
  * @since 2.0.0
  */
@@ -35,13 +37,23 @@ public class AvailablePluginDescriptor implements PluginDescriptor {
   private final PluginInformation information;
   private final PluginCondition condition;
   private final Set<String> dependencies;
+  private final Set<String> optionalDependencies;
   private final String url;
   private final String checksum;
 
+  /**
+   * @deprecated Use {@link #AvailablePluginDescriptor(PluginInformation, PluginCondition, Set, Set, String, String)} instead
+   */
+  @Deprecated
   public AvailablePluginDescriptor(PluginInformation information, PluginCondition condition, Set<String> dependencies, String url, String checksum) {
+    this(information, condition, dependencies, emptySet(), url, checksum);
+  }
+
+  public AvailablePluginDescriptor(PluginInformation information, PluginCondition condition, Set<String> dependencies, Set<String> optionalDependencies, String url, String checksum) {
     this.information = information;
     this.condition = condition;
     this.dependencies = dependencies;
+    this.optionalDependencies = optionalDependencies;
     this.url = url;
     this.checksum = checksum;
   }
@@ -68,4 +80,9 @@ public class AvailablePluginDescriptor implements PluginDescriptor {
   public Set<String> getDependencies() {
     return dependencies;
   }
+
+  @Override
+  public Set<String> getOptionalDependencies() {
+    return optionalDependencies;
+  }
 }

scm-core/src/main/java/sonia/scm/plugin/InstalledPluginDescriptor.java

@@ -191,6 +191,7 @@ public final class InstalledPluginDescriptor extends ScmModule implements Plugin
    *
    * @since 2.0.0
    */
+  @Override
   public Set<String> getOptionalDependencies() {
     if (optionalDependencies == null)
     {

scm-core/src/main/java/sonia/scm/plugin/PluginDescriptor.java

@@ -21,11 +21,13 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-    
+
 package sonia.scm.plugin;
 
 import java.util.Set;
 
+import static java.util.Collections.emptySet;
+
 public interface PluginDescriptor {
 
   PluginInformation getInformation();
@@ -34,4 +36,8 @@ public interface PluginDescriptor {
 
   Set<String> getDependencies();
 
+  default Set<String> getOptionalDependencies() {
+    return emptySet();
+  }
+
 }

scm-webapp/src/main/java/sonia/scm/plugin/PluginCenterDto.java

@@ -85,6 +85,9 @@ public final class PluginCenterDto implements Serializable {
     @XmlElement(name = "dependencies")
     private Set<String> dependencies;
 
+    @XmlElement(name = "optionalDependencies")
+    private Set<String> optionalDependencies;
+
     @XmlElement(name = "_links")
     private Map<String, Link> links;
   }

scm-webapp/src/main/java/sonia/scm/plugin/PluginCenterDtoMapper.java

@@ -43,7 +43,7 @@ public abstract class PluginCenterDtoMapper  {
     for (PluginCenterDto.Plugin plugin : pluginCenterDto.getEmbedded().getPlugins()) {
       String url = plugin.getLinks().get("download").getHref();
       AvailablePluginDescriptor descriptor = new AvailablePluginDescriptor(
-        map(plugin), map(plugin.getConditions()), plugin.getDependencies(), url, plugin.getSha256sum()
+        map(plugin), map(plugin.getConditions()), plugin.getDependencies(), plugin.getOptionalDependencies(), url, plugin.getSha256sum()
       );
       plugins.add(new AvailablePlugin(descriptor));
     }