Add project information file (#240)

* add project information file

* add changelog info

Author: jenniferboedker

CHANGELOG.rst

@@ -12,6 +12,8 @@ This project adheres to `Semantic Versioning <https://semver.org/>`_.
 
 **Added**
 
+* Add ProjectInformation.java to groovy portlets
+
 * speedup runtime of groovy osgi portlets
 
 **Fixed**

qube/create/templates/portlet/portlet_groovy_osgi/{{ cookiecutter.project_slug }}/src/main/java/life.qbic.portal.portlet/PortletInformation.java

@@ -0,0 +1,63 @@
+package life.qbic.portal.portlet;
+
+import java.io.IOException;
+import java.util.Properties;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.FrameworkUtil;
+
+/**
+ * Shows the portlet information
+ * <p>
+ * This class can be used when the bundle description is missing
+ *
+ * @since: 2.6.2
+ */
+public class PortletInformation {
+
+    private String portletName;
+    private String portletVersion;
+    private String portletRepoURL;
+
+    public PortletInformation(){
+        Bundle bundle = FrameworkUtil.getBundle({{ cookiecutter.main_class_prefix }}PortletUI.class);
+        if (bundle == null) {
+            tryToLoadProperties();
+        } else {
+            loadBundleProperties(bundle);
+        }
+    }
+
+    public String getPortletName() {
+        return portletName;
+    }
+
+    public String getPortletVersion() {
+        return portletVersion;
+    }
+
+    public String getPortletRepoURL() {
+        return portletRepoURL;
+    }
+
+    private void loadBundleProperties(Bundle bundle) {
+        portletName = bundle.getHeaders().get("Bundle-Name");
+        portletVersion = bundle.getVersion().toString();
+        portletRepoURL =  bundle.getHeaders().get("Bundle-DocURL");
+    }
+
+    private void tryToLoadProperties() {
+        try {
+            loadProperties();
+        } catch (IOException e){
+            throw new RuntimeException(e);
+        }
+    }
+
+    private void loadProperties() throws IOException {
+        final Properties properties = new Properties();
+        properties.load(this.getClass().getClassLoader().getResourceAsStream("app.properties"));
+        portletName = properties.getProperty("name");
+        portletVersion = properties.getProperty("version");
+        portletRepoURL =  properties.getProperty("url");
+    }
+}

qube/create/templates/portlet/portlet_groovy_osgi/{{ cookiecutter.project_slug }}/src/main/resources/app.properties

@@ -0,0 +1,4 @@
+name=${project.name}
+version=${project.version}
+symbolicName=${project.groupId}.${project.artifactId}
+url=${project.url}