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<?xml version="1.0" encoding="UTF-8"?>
<classpathentry kind="src" output="target/classes" path="src/main/java">
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
<attribute name="maven.pomderived" value="true"/>
<classpathentry kind="src" output="target/test-classes" path="src/test/java">
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
<attribute name="test" value="true"/>
<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
<attribute name="maven.pomderived" value="true"/>
<attribute name="test" value="true"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
<attribute name="maven.pomderived" value="true"/>
<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
<attribute name="maven.pomderived" value="true"/>
<attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
<classpathentry kind="output" path="target/classes"/>

.gitignore vendored

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<?xml version="1.0" encoding="UTF-8"?>

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<?xml version="1.0" encoding="UTF-8"?>
<classpathentry excluding="**/bower_components/*|**/node_modules/*|**/*.min.js" kind="src" path="src/main/webapp"/>
<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.JRE_CONTAINER"/>
<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.WebProject">
<attribute name="hide" value="true"/>
<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.baseBrowserLibrary"/>
<classpathentry kind="output" path=""/>

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<?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0">
<wb-module deploy-name="vre-data-pool-service">
<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="java-output-path" value="/DDAS-VRE-Servlet/target/classes"/>
<property name="context-root" value="vre-data-pool-service"/>

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<facet id="jst.jaxrs">
<node name="libprov">
<attribute name="provider-id" value="jaxrs-no-op-library-provider"/>

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<?xml version="1.0" encoding="UTF-8"?>
<fixed facet="wst.jsdt.web"/>
<installed facet="java" version="1.8"/>
<installed facet="jst.jaxrs" version="2.0"/>
<installed facet="wst.jsdt.web" version="1.0"/>
<installed facet="jst.web" version="3.0"/>

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# Changelog for workspace
All notable changes to this project will be documented in this file.
This project adheres to [Semantic Versioning](
## [v1.0.0-SNAPSHOT] - 2021-09-07
- First release

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# Acknowledgments
The projects leading to this software have received funding from a series of European Union programmes including:
- the Sixth Framework Programme for Research and Technological Development
- [DILIGENT]( (grant no. 004260).
- the Seventh Framework Programme for research, technological development and demonstration
- [D4Science]( (grant no. 212488);
- [D4Science-II]( (grant no.239019);
- [ENVRI]( (grant no. 283465);
- [iMarine]( (grant no. 283644);
- [EUBrazilOpenBio]( (grant no. 288754).
- the H2020 research and innovation programme
- [SoBigData]( (grant no. 654024);
- [PARTHENOS]( (grant no. 654119);
- [EGI-Engage]( (grant no. 654142);
- [ENVRI PLUS]( (grant no. 654182);
- [BlueBRIDGE]( (grant no. 675680);
- [PerformFISH]( (grant no. 727610);
- [AGINFRA PLUS]( (grant no. 731001);
- [DESIRA]( (grant no. 818194);
- [ARIADNEplus]( (grant no. 823914);
- [RISIS 2]( (grant no. 824091);
- [EOSC-Pillar]( (grant no. 857650);
- [Blue Cloud]( (grant no. 862409);
- [SoBigData-PlusPlus]( (grant no. 871042);

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#European Union Public Licence V.1.1
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# gCube System - vre-data-pool-service
This component read periodically email replies from user wanting to reply to a post via email
## Structure of the project
* The source code is present in the src folder.
## Built With
* [OpenJDK]( - The JDK used
* [Maven]( - Dependency Management
## Documentation
* Use of this service is described in the [Wiki](
## Change log
See [Releases](
## Authors
* **Massimiliano Assante** - [ISTI-CNR Infrascience Group](
## Maintainers
* **Massimiliano Assante** - [ISTI-CNR Infrascience Group](
## License
This project is licensed under the EUPL V.1.1 License - see the []( file for details.
## About the gCube Framework
This software is part of the [gCubeFramework]( "gCubeFramework"): an
open-source software toolkit used for building and operating Hybrid Data
Infrastructures enabling the dynamic deployment of Virtual Research Environments
by favouring the realisation of reuse oriented policies.
The projects leading to this software have received funding from a series of European Union programmes including:
- the Sixth Framework Programme for Research and Technological Development
- DILIGENT (grant no. 004260);
- the Seventh Framework Programme for research, technological development and demonstration
- D4Science (grant no. 212488), D4Science-II (grant no.239019), ENVRI (grant no. 283465), EUBrazilOpenBio (grant no. 288754), iMarine(grant no. 283644);
- the H2020 research and innovation programme
- BlueBRIDGE (grant no. 675680), EGIEngage (grant no. 654142), ENVRIplus (grant no. 654182), Parthenos (grant no. 654119), SoBigData (grant no. 654024),DESIRA (grant no. 818194), ARIADNEplus (grant no. 823914), RISIS2 (grant no. 824091), PerformFish (grant no. 727610), AGINFRAplus (grant no. 731001);

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<project xmlns=""
<relativePath />
<name>DDAS-VRE-Servlet Webapp</name>

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package org.gcube.portal.ddas;
import java.util.Base64;
import javax.portlet.PortletRequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.liferay.portal.kernel.json.JSONFactoryUtil;
import com.liferay.portal.kernel.json.JSONObject;
import com.liferay.portal.kernel.log.LogFactoryUtil;
* Servlet implementation class DdasVREService
public class DdasVREService extends HttpServlet {
private static final long serialVersionUID = 1L;
private static com.liferay.portal.kernel.log.Log _log = LogFactoryUtil.getLog(DdasVREService.class);
* @see HttpServlet#HttpServlet()
public DdasVREService() {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String toReturn = "<DIV>Blue-Cloud VRE - DD&amp;AS integration accepts POST method only</DIV>";
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
StringBuffer sb = new StringBuffer();
String line = null;
JSONObject jsonObject = null;
try {
BufferedReader reader = request.getReader();
while ((line = reader.readLine()) != null) {
System.out.println("GOT String: "+sb.toString());
jsonObject = JSONFactoryUtil.createJSONObject(sb.toString());
} catch (Exception e) {
_log.error("Error parsing JSON request string", e);
Base64.Encoder withoutPaddingEncoder = Base64.getEncoder().withoutPadding();
String requestIdParam = withoutPaddingEncoder.encodeToString("request_id".getBytes());
String requestId = jsonObject.getString("request_id");
System.out.println("GOT JSON");
String redirect_url = "/group/nomesito/vre-data-pool-pagina?"+requestIdParam+"="+requestId;
String toReturn = "{\"success\": true, \"redirect_url\": \""+redirect_url+"\"}";

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package org.gcube.portal.ddas;
import static org.gcube.resources.discovery.icclient.ICFactory.clientFor;
import static org.gcube.resources.discovery.icclient.ICFactory.queryFor;
import java.util.ArrayList;
import java.util.List;
import org.gcube.common.portal.PortalContext;
import org.gcube.common.resources.gcore.ServiceEndpoint;
import org.gcube.common.resources.gcore.ServiceEndpoint.AccessPoint;
import org.gcube.common.resources.gcore.utils.Group;
import org.gcube.common.scope.api.ScopeProvider;
import org.gcube.resources.discovery.client.api.DiscoveryClient;
import org.gcube.resources.discovery.client.queries.api.SimpleQuery;
import org.slf4j.LoggerFactory;
import net.spy.memcached.KetamaConnectionFactory;
import net.spy.memcached.MemcachedClient;
* @author Massimiliano Assante at ISTI-CNR
public class DistributedCacheClient {
// Logger
private static final org.slf4j.Logger _log = LoggerFactory.getLogger(DistributedCacheClient.class);
private static final String MEMCACHED_RESOURCE_NAME = "Memcached";
private static final String CATEGORY = "Database";
private MemcachedClient mClient;
* Build the singleton instance
public DistributedCacheClient(){
List<InetSocketAddress> addrs = discoverMemcachedClusterEndpoint();
try {
mClient = new MemcachedClient(new KetamaConnectionFactory(), addrs);
} catch (IOException e) {
public MemcachedClient getMemcachedClient() {
return mClient;
* Retrieve endpoint resoruce from IS
* @return List of InetSocketAddresses
* @throws Exception
private static List<InetSocketAddress> discoverMemcachedClusterEndpoint(){
String currentScope = ScopeProvider.instance.get();
String infrastructure = "/"+PortalContext.getConfiguration().getInfrastructureName();
List<InetSocketAddress> toReturn = new ArrayList<InetSocketAddress>();
SimpleQuery query = queryFor(ServiceEndpoint.class);
query.addCondition("$resource/Profile/Name/text() eq '"+ MEMCACHED_RESOURCE_NAME +"'");
query.addCondition("$resource/Profile/Category/text() eq '"+ CATEGORY +"'");
DiscoveryClient<ServiceEndpoint> client = clientFor(ServiceEndpoint.class);
List<ServiceEndpoint> ses = client.submit(query);
if (ses.isEmpty()) {
_log.error("There is no Memcached cluster having name: " + MEMCACHED_RESOURCE_NAME + " and Category " + CATEGORY + " on root context in this infrastructure: ");
return null;
for (ServiceEndpoint se : ses) {
Group<AccessPoint> aps = se.profile().accessPoints();
for (AccessPoint ap : aps.asCollection()) {
String address = ap.address(); //e.g.
String[] splits = address.split(":");
String hostname = splits[0];
int port = Integer.parseInt(splits[1]);
toReturn.add(new InetSocketAddress(hostname, port));
} catch(Exception e){
_log.error("Error while retrieving hosts for the Memcached cluster having name: " + MEMCACHED_RESOURCE_NAME + " and Category " + CATEGORY + " on root context");
return toReturn;

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="" xmlns:xsi=""

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<title>Blue-Cloud VRE - DD&amp;AS integration service</title>
<h2>Hello From Blue-Cloud VRE - DD&amp;AS integration service!</h2>