server side implemented

git-svn-id: http://svn.d4science-ii.research-infrastructures.eu/gcube/trunk/portlets/widgets/catalogue-sharing-widget@146441 82a268e6-3cf1-43bd-a215-b396298e98cf

.classpath

@@ -44,5 +44,10 @@
 	</classpathentry>
 	<classpathentry kind="lib" path="/home/costantino/Downloads/gwt-2.7.0/validation-api-1.0.0.GA-sources.jar"/>
 	<classpathentry kind="lib" path="/home/costantino/Downloads/gwt-2.7.0/validation-api-1.0.0.GA.jar" sourcepath="/home/costantino/Downloads/gwt-2.7.0/validation-api-1.0.0.GA-sources.jar"/>
+	<classpathentry excluding="**" kind="src" output="${webappDirectory}/WEB-INF/classes" path="src/main/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="output" path="${webappDirectory}/WEB-INF/classes"/>
 </classpath>

.settings/org.eclipse.wst.common.component

@@ -3,6 +3,7 @@
         <wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/>
         <wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/>
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/>
+        <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
         <property name="context-root" value="catalogue-sharing-widget"/>
         <property name="java-output-path" value="/catalogue-sharing-widget/target/catalogue-sharing-widget-1.0.0-SNAPSHOT/WEB-INF/classes"/>
     </wb-module>

pom.xml

@@ -60,6 +60,12 @@
 			<artifactId>gwt-user</artifactId>
 			<scope>provided</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.gcube.core</groupId>
+			<artifactId>common-scope-maps</artifactId>
+			<scope>provided</scope>
+			<!-- put at provided for deploying -->
+		</dependency>
 		<dependency>
 			<groupId>com.google.gwt</groupId>
 			<artifactId>gwt-dev</artifactId>
@@ -75,6 +81,12 @@
 			<artifactId>slf4j-api</artifactId>
 			<scope>provided</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.gcube.portlets.user</groupId>
+			<artifactId>gcube-url-shortener</artifactId>
+			<version>[1.0.0-SNAPSHOT,2.0.0-SNAPSHOT)</version>
+			<scope>compile</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.gcube.common.portal</groupId>
 			<artifactId>portal-manager</artifactId>
@@ -86,6 +98,21 @@
 			<version>[2.0.0-SNAPSHOT, 3.0.0-SNAPSHOT)</version>
 			<scope>compile</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.gcube.common</groupId>
+			<artifactId>authorization-client</artifactId>
+			<scope>provided</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.gcube.common.portal</groupId>
+			<artifactId>portal-manager</artifactId>
+			<scope>provided</scope>
+		</dependency>
+		<dependency>
+			<groupId>com.liferay.portal</groupId>
+			<artifactId>portal-service</artifactId>
+			<scope>provided</scope>
+		</dependency>
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>

src/main/java/org/gcube/portlets_widgets/catalogue_sharing_widget/client/ShareServices.java

@@ -8,9 +8,9 @@ import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
 /**
  * The client side stub for the RPC service.
  */
-@RemoteServiceRelativePath("share")
+@RemoteServiceRelativePath("shareservices")
 public interface ShareServices extends RemoteService {
 	
-	ItemUrls greetServer(String uuid) throws Exception;
+	ItemUrls getPackageUrl(String uuid) throws Exception;
 	
 }

src/main/java/org/gcube/portlets_widgets/catalogue_sharing_widget/client/ShareServicesAsync.java

@@ -6,6 +6,6 @@ import com.google.gwt.user.client.rpc.AsyncCallback;
 
 public interface ShareServicesAsync {
 
-	void greetServer(String uuid, AsyncCallback<ItemUrls> callback);
+	void getPackageUrl(String uuid, AsyncCallback<ItemUrls> callback);
 
 }

src/main/java/org/gcube/portlets_widgets/catalogue_sharing_widget/server/ShareServicesImpl.java

@@ -1,5 +1,121 @@
 package org.gcube.portlets_widgets.catalogue_sharing_widget.server;
 
-public class ShareServicesImpl {
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+
+import org.gcube.common.portal.PortalContext;
+import org.gcube.common.scope.api.ScopeProvider;
+import org.gcube.datacatalogue.ckanutillibrary.server.ApplicationProfileScopePerUrlReader;
+import org.gcube.datacatalogue.ckanutillibrary.server.DataCatalogue;
+import org.gcube.datacatalogue.ckanutillibrary.server.DataCatalogueFactory;
+import org.gcube.portlets.user.urlshortener.UrlShortener;
+import org.gcube.portlets_widgets.catalogue_sharing_widget.client.ShareServices;
+import org.gcube.portlets_widgets.catalogue_sharing_widget.shared.ItemUrls;
+
+import com.google.gwt.user.server.rpc.RemoteServiceServlet;
+import com.liferay.portal.kernel.log.Log;
+import com.liferay.portal.kernel.log.LogFactoryUtil;
+
+public class ShareServicesImpl extends RemoteServiceServlet implements ShareServices{
+
+	private static final long serialVersionUID = -2060855544534802987L;
+	private static final Log logger = LogFactoryUtil.getLog(ShareServicesImpl.class);
+	public static final String GCUBE_REQUEST_URL = "gcube-request-url";
+
+	/**
+	 * Retrieve an instance of the library for the scope
+	 * @param scope if it is null it is evaluated from the session
+	 * @return
+	 * @throws Exception 
+	 */
+	public DataCatalogue getCatalogue(String scope) throws Exception{
+
+		String scopeInWhichDiscover = (scope != null && !scope.isEmpty()) ? scope : getCurrentContext(getThreadLocalRequest(), false);
+		logger.debug("Discovering ckan instance into scope " + scopeInWhichDiscover);
+		return DataCatalogueFactory.getFactory().getUtilsPerScope(scopeInWhichDiscover);
+
+	}
+
+	@Override
+	public ItemUrls getPackageUrl(String uuid) throws Exception{
+
+		String scopePerCurrentUrl = getScopeFromClientUrl(getThreadLocalRequest());
+		DataCatalogue catalogue = getCatalogue(scopePerCurrentUrl);
+		String longUrl = catalogue.getUnencryptedUrlFromDatasetIdOrName(uuid);
+		String shortUrl = null;
+		
+		UrlShortener shortener = new UrlShortener();
+		if(shortener!=null && shortener.isAvailable())
+			shortUrl = shortener.shorten(longUrl);
+		
+		return new ItemUrls(shortUrl, longUrl, uuid);
+	}
+
+
+	/**
+	 * Get the scope in which ckan information needs to be discovered from the url
+	 * @param httpServletRequest
+	 * @return
+	 */
+	public static String getScopeFromClientUrl(HttpServletRequest httpServletRequest){
+
+		if(httpServletRequest == null)
+			throw new IllegalArgumentException("HttpServletRequest is null!");
+
+		String scopeToReturn = null;
+		try{
+			String clientUrl = getCurrentClientUrl(httpServletRequest).split("\\?")[0];
+			logger.debug("Client url is " + clientUrl);
+
+			// check if this information is in session, otherwise set it and return
+			HttpSession session = httpServletRequest.getSession();
+
+			if((scopeToReturn = (String) session.getAttribute(clientUrl)) != null){
+				logger.debug("Scope to return is " + scopeToReturn);
+			}else{
+				// ask to the ckan library and set it
+				scopeToReturn = ApplicationProfileScopePerUrlReader.getScopePerUrl(clientUrl);
+				logger.debug("Scope to return is " + scopeToReturn);
+				session.setAttribute(clientUrl, scopeToReturn);
+			}
+		}catch(Exception e){
+			scopeToReturn = getCurrentContext(httpServletRequest, false);
+			logger.warn("Failed to determine the scope from the client url, returning the current one: " + scopeToReturn);
+		}
+		return scopeToReturn;
+	}
+
+	/**
+	 * Retrieve the current scope by using the portal manager
+	 * @param b 
+	 * @return a GcubeUser object
+	 */
+	public static String getCurrentContext(HttpServletRequest request, boolean setInThread){
+
+		if(request == null)
+			throw new IllegalArgumentException("HttpServletRequest is null!");
+
+		PortalContext pContext = PortalContext.getConfiguration();
+		String context = pContext.getCurrentScope(request);
+		logger.debug("Returning context " + context);
+
+		if(context != null && setInThread)
+			ScopeProvider.instance.set(context);
+
+		return context;
+	}
+
+	/**
+	 * Needed to get the url of the client
+	 * @param httpServletRequest the httpServletRequest object
+	 * @return the instance of the user 
+	 * @see the url at client side
+	 */
+	public static String getCurrentClientUrl(HttpServletRequest httpServletRequest) {
+		if(httpServletRequest == null)
+			throw new IllegalArgumentException("HttpServletRequest is null!");
+
+		return httpServletRequest.getHeader(GCUBE_REQUEST_URL);
+	}
 
 }

src/main/java/org/gcube/portlets_widgets/catalogue_sharing_widget/shared/ItemUrls.java

@@ -13,6 +13,16 @@ public class ItemUrls implements Serializable {
 	private String shortUrl;
 	private String url;
 	private String catalogueUUID;
+	
+	
+
+	/**
+	 * 
+	 */
+	public ItemUrls() {
+		super();
+		// TODO Auto-generated constructor stub
+	}
 
 	/**
 	 * @param shortUrl

src/main/webapp/WEB-INF/web.xml

@@ -7,13 +7,13 @@
 
   <!-- Servlets -->
   <servlet>
-    <servlet-name>greetServlet</servlet-name>
-    <servlet-class>org.gcube.portlets_widgets.catalogue_sharing_widget.server.GreetingServiceImpl</servlet-class>
+    <servlet-name>shareservices</servlet-name>
+    <servlet-class>org.gcube.portlets_widgets.catalogue_sharing_widget.server.ShareServicesImpl</servlet-class>
   </servlet>
 
   <servlet-mapping>
-    <servlet-name>greetServlet</servlet-name>
-    <url-pattern>/ShareCatalogue/greet</url-pattern>
+    <servlet-name>shareservices</servlet-name>
+    <url-pattern>/ShareCatalogue/shareservices</url-pattern>
   </servlet-mapping>
 
   <!-- Default page to serve -->