Enhancing portlets with charts and secure directory service Tomasz Kuczyński [email protected] Poznan Supercomputing and Networking Center

Enhancing portlets with charts and secure directory service

Tomasz Kuczyński

[email protected]

Poznan Supercomputing and Networking Center

Goals of today’s tutorial

Introduce your portlets enhancement possibilities with some core GridSphere services

Write a portlet using the Secure Directory GridSphere service

Learn charting with GridSphere services

Have a great time !

Assumptions and requirements

We assume that:You are familiar with GridSphere

You are familiar with portlet development

Require:You have GridSphere installed on your machine (please consult GridSphere development tutorial)

sdcharttutorial from CVS

You are ready for development session :-)

cd gridsphere/; mkdir projects; cd projectscvs -d :pserver:[email protected]:/home/repository co sdcharttutorial

Secure Directory Service

Providing secure, logical file systems:for each user of the portletfor other GridSphere servicesshared amongst portlet/portal users

Sharing files of the portlet:with other portletbetween portlet/portal users

Easy utilization:methods corresponding to operations on standard file systems (copy, move, delete ...)transparent access to files with HTTP protocol

Chart Service

Providing JFreeChart wrapper for GridSphere17 types of charts including:

Pie, Pie3DBar, Bar3D, StackedBar, StackedBar3DArea, Line, Ganttother

Utilizing Secure Directory ServiceEasy utilization:

transparent chart generationXML based dataset and chart settings representationstransparent access to charts with HTTP protocol

Preparations

Make sure your GridSphere is correctly installed

Install tutorial

Startup tomcat, log in to the portal, subscribe to and view sdcharttutorial group

Check content of Secure Directory in your Tomcat

Upload some file with Hello Secure Directory Portlet, and check content again

cd gridsphere/projects/sdcharttutorial; ant install

ls –laR $CATALINA_HOME/webapps/gridsphere/WEB-INF/secure

Hello Secure Directory - portlet

Hello Secure Directory - source

Look at following portlet in src/org/gridlab/gridsphere/secdirtutorial/portlets/HelloSecDirPortlet.java

package org.gridlab.gridsphere.secdirtutorial.portlets;

...import org.gridlab.gridsphere.services.core.secdir.SecureDirectoryService;import org.gridlab.gridsphere.services.core.secdir.FileInfo;import org.gridlab.gridsphere.services.core.secdir.FileLocationID;...

import org.apache.oro.text.perl.Perl5Util;

public class HelloSecDirPortlet extends ActionPortlet{ private static final String VIEW_JSP = "secdir/view.jsp"; private static final String VIEW_ERROR_JSP = "secdir/error.jsp"; private SecureDirectoryService secureDirectoryService = null; public static final String ROOT_DIR = "secdirandcharttutorial"; public static final String ROOT_PATH = "/some/path/";

private Perl5Util util = new Perl5Util();


public void init(javax.portlet.PortletConfig portletConfig) throws ...javax.portlet.PortletException {

super.init(portletConfig); try{ secureDirectoryService = (SecureDirectoryService) ...

createPortletService(SecureDirectoryService.class); DEFAULT_VIEW_PAGE = "showFile"; }catch(PortletServiceException e){ DEFAULT_VIEW_PAGE = VIEW_ERROR_JSP; }}

public void showFile(RenderFormEvent event) throws PortletException { String userID = (String) ((Map) event.getRenderRequest().getAttribute ...

(PortletRequest.USER_INFO)).get("user.id"); UserData userData = new UserData(); try { if (!secureDirectoryService.categoryExistsForUser(userID, ROOT_DIR)) secureDirectoryService.createCategoryForUser(userID, ROOT_DIR);


FileInfo[] fileList = secureDirectoryService.getFileList( ... secureDirectoryService.createFileLocationID(userID, ROOT_DIR, ROOT_PATH)); String[] fileURIs = null;

if (fileList != null) { fileURIs = new String[fileList.length]; for (int i = 0; i < fileList.length; ++i) { if (!fileList[i].isDirectory()) { FileLocationID fileLocationID = secureDirectoryService. ... createFileLocationID(userID, ROOT_DIR, ROOT_PATH + fileList[i].getResource());

fileURIs[i] = secureDirectoryService.getDownloadFileUrl ... (fileLocationID, fileList[i].getResource(), null); } } } userData.setFileList(fileList); userData.setFileURIs(fileURIs); } catch (Exception e) { log.error("Secure service unavailable", e); } event.getRenderRequest().setAttribute("userData", userData); setNextState(event.getRenderRequest(), VIEW_JSP);}


public void uploadFile(ActionFormEvent event) throws PortletException { String userID = (String) ((Map) event.getActionRequest().getAttribute ...

(PortletRequest.USER_INFO)).get("user.id"); try { FileInputBean fi = event.getFileInputBean("userfile"); String filename = fi.getFileName(); if (fi.getSize() < FileInputBean.MAX_UPLOAD_SIZE) { filename = util.substitute("s!\\\\!/!g", filename);

if (util.match("m!/([^/]+)$!", filename)) { filename = util.group(1); } filename = util.substitute("s! !!g", filename); secureDirectoryService.addFile(secureDirectoryService.create ... FileLocationID(userID, ROOT_DIR, ROOT_PATH + filename), fi.getInputStream()); } else log.error("Size of uploaded file is to big");

} catch (Exception ie) {} }}


package org.gridlab.gridsphere.secdirtutorial.portlets;

import org.gridlab.gridsphere.services.core.secdir.FileInfo;

public class UserData { private FileInfo[] fileList; private String[] fileURIs;

public FileInfo[] getFileList() { return fileList; }

public void setFileList(FileInfo[] fileList) { this.fileList = fileList; }

public String[] getFileURIs() { return fileURIs; }

public void setFileURIs(String[] fileURIs) { this.fileURIs = fileURIs; }}

SecDir Service - summary

Check also:webapp/jsp/secdir/view.jspwebapp/jsp/secdir/error.jsp

More advanced examples:Commander, Banner and Web Clipping portlets in extras webapp (utilization of Secure Directory Service with portlets)

Chart Service in GridSphere (utilization of Secure Directory Service with other service)

cd gridsphere/; mkdir projects; cd projectscvs -d :pserver:[email protected]:/home/repository co extras

Hello Chart - portlets

Hello Chart 1 - source

Look at following portlet in src/org/gridlab/gridsphere/charttutorial/portlets/HelloChartPortlet1.javapackage org.gridlab.gridsphere.charttutorial.portlets;

...import org.gridlab.gridsphere.services.core.charts.*;import org.gridlab.gridsphere.services.core.secdir.FileLocationID;...

public class HelloChartPortlet1 extends ActionPortlet{ private ChartService chartService = null; private static final String VIEW_JSP = "charts/view1.jsp"; private static final String VIEW_ERROR_JSP = "charts/error.jsp";

public void init(PortletConfig portletConfig) throws PortletException { super.init(portletConfig); try { chartService = (ChartService) createPortletService(ChartService.class); DEFAULT_VIEW_PAGE = "viewChart"; } catch (PortletServiceException e) { DEFAULT_VIEW_PAGE = VIEW_ERROR_JSP; } }


public void viewChart(RenderFormEvent event) throws PortletException { String userID = (String) ((Map) event.getRenderRequest().getAttribute ...

(PortletRequest.USER_INFO)).get("user.id");

FileLocationID chartLocationID = chartService.createChartLocationID(userID, HelloSecDirPortlet.ROOT_DIR, HelloSecDirPortlet.ROOT_PATH + "ChartTest1");

String chartURL = chartService.getChartUrl(chartLocationID); ImageBean imageBean = event.getImageBean("chart1"); if (chartURL != null) imageBean.setSrc(chartURL); setNextState(event.getRenderRequest(), VIEW_JSP); }

public void createChart(ActionFormEvent event) throws PortletException { String userID = (String) ((Map) event.getActionRequest().getAttribute ...

(PortletRequest.USER_INFO)).get("user.id"); org.jfree.data.DefaultPieDataset dataset = new ...

org.jfree.data.DefaultPieDataset(); dataset.setValue("Pacific", 179700); dataset.setValue("Atlantic", 106463); dataset.setValue("Indian", 74917);


try { FileLocationID chartLocationID = chartService.createChartLocationID(userID, HelloSecDirPortlet.ROOT_DIR, HelloSecDirPortlet.ROOT_PATH + "ChartTest1");

ChartDescriptor chartDescriptor = chartService.createPie3DChart ...(chartLocationID, dataset);

SeriesPaint seriesPaintPacific = new SeriesPaint(); SeriesPaint seriesPaintAtlantic = new SeriesPaint(); SeriesPaint seriesPaintIndian = new SeriesPaint();

Color blue = new Color(); blue.setBlue(255);

Color white = new Color(); white.setBlue(255); white.setRed(255); white.setGreen(255);

Color grey = new Color(); grey.setBlue(200); grey.setRed(200); grey.setGreen(200);


seriesPaintPacific.setColor(blue); seriesPaintIndian.setColor(white); seriesPaintAtlantic.setColor(grey);

chartDescriptor.getChartInfo().getPlot().addSeriesPaint(0, ... seriesPaintPacific);

chartDescriptor.getChartInfo().getPlot().addSeriesPaint(1, ... seriesPaintAtlantic);

chartDescriptor.getChartInfo().getPlot().addSeriesPaint(2, ... seriesPaintIndian);

chartDescriptor.getChartInfo().getPlot().setForegroundAlpha(0.5f);

BackgroundPaint backgroundPaint = new BackgroundPaint();

Gradient background = new Gradient(); GradientPoint point1 = new GradientPoint(); point1.setColor(white); point1.setX(0); point1.setY(0); GradientPoint point2 = new GradientPoint(); point2.setColor(blue); point2.setX(400); point2.setY(300);


background.addGradientPoint(point1); background.addGradientPoint(point2);

backgroundPaint.setGradient(background); chartDescriptor.getChartInfo().getPlot().setBackgroundPaint ...

(backgroundPaint);

chartDescriptor.getChartInfo().setLegend(false);

chartDescriptor.getChartInfo().getPlot().getSettings().getPie(). ... setLabelGenerator("{0} Ocean is {2}");

chartService.setChartDescriptor(chartLocationID, chartDescriptor); chartService.setChartTitle(chartLocationID, "Area of oceans ...

[mln * km2]"); } catch (Exception ie) {} }}




public class HelloChartPortlet2 extends ActionPortlet { private ChartService chartService = null; private static final String VIEW_JSP = "charts/view2.jsp"; private static final String VIEW_ERROR_JSP = "charts/error.jsp";








(PortletRequest.USER_INFO)).get("user.id"); org.jfree.data.DefaultCategoryDataset dataset = new org.jfree.data. ...

DefaultCategoryDataset(); dataset.setValue(179700, "Pacific", "Ocean"); dataset.setValue(106463, "Atlantic", "Ocean"); dataset.setValue(74917, "Indian", "Ocean"); dataset.setValue(44406, "Asia", "Land"); dataset.setValue(29853, "Africa", "Land");


dataset.setValue(24298, "North America", "Land"); dataset.setValue(17684, "South America", "Land"); dataset.setValue(13176, "Antarctic", "Land"); dataset.setValue(9763, "Europe", "Land"); dataset.setValue(8936, "Australia", "Land"); try { FileLocationID chartLocationID = chartService.createChartLocationID(userID, HelloSecDirPortlet.ROOT_DIR, HelloSecDirPortlet.ROOT_PATH + "ChartTest2");

ChartDescriptor chartDescriptor = chartService. ... createStackedBar3DChart(chartLocationID, dataset);

Category category = chartDescriptor.getChartInfo().getPlot(). ... getSettings().getCategory();

category.setRangeAxisLabel("area [mln * km2]"); category.setDomainAxisLabel(""); category.setPlotOrientation("PlotOrientation.HORIZONTAL");

SeriesPaint pacificPaint = new SeriesPaint(); Gradient pacificGradient = new Gradient(); GradientPoint point1 = new GradientPoint(); GradientPoint point2 = new GradientPoint();


Color yellow = new Color(); yellow.setGreen(255); yellow.setRed(255); Color white = new Color(); white.setBlue(255); white.setRed(255); white.setGreen(255); point1.setColor(white); point1.setX(100); point1.setY(0); point2.setColor(yellow); point2.setX(200); point2.setY(0); pacificGradient.addGradientPoint(point1); pacificGradient.addGradientPoint(point2); pacificPaint.setGradient(pacificGradient); chartDescriptor.getChartInfo().getPlot().addSeriesPaint(pacificPaint);

chartDescriptor.getFileInfo().getImage().setFilename( ... HelloSecDirPortlet.ROOT_PATH + "Chart2Test_but_other_filename");

BackgroundPaint backgroundPaint = new BackgroundPaint();


Color lgreen = new Color(); ... backgroundPaint.setColor(lgreen); chartDescriptor.getChartInfo().setBackgroundPaint(backgroundPaint); chartDescriptor.getChartInfo().getPlot().setForegroundAlpha(0.75f);

chartService.setChartDescriptor(chartLocationID, chartDescriptor); chartService.setChartTitle(chartLocationID, "Area of Oceans ...

and Continents"); } catch (Exception ie) {} }

public void createChartNoData(ActionFormEvent event) throws ... PortletException {

String userID = (String) ((Map) event.getActionRequest().getAttribute( ... PortletRequest.USER_INFO)).get("user.id");

org.jfree.data.DefaultCategoryDataset dataset = new org.jfree.data. ... DefaultCategoryDataset();

try { FileLocationID chartLocationID = chartService.createChartLocationID(userID, HelloSecDirPortlet.ROOT_DIR, HelloSecDirPortlet.ROOT_PATH + "ChartTest2"); chartService.createStackedBarChart(chartLocationID, dataset); } catch (Exception ie) {}...

Hello Chart - portlets




public class HelloChartPortlet3 extends ActionPortlet { private ChartService chartService = null; private static final String VIEW_JSP = "charts/view3.jsp"; private static final String VIEW_ERROR_JSP = "charts/error.jsp";








(PortletRequest.USER_INFO)).get("user.id"); org.jfree.data.DefaultCategoryDataset dataset = new org.jfree.data. ...

DefaultCategoryDataset(); dataset.setValue(979, "South America", "Salto del Angel"); dataset.setValue(604, "Europe", "Giessbach"); dataset.setValue(580, "Oceania", "Sutherland"); dataset.setValue(491, "North America", "Ribbon"); dataset.setValue(422, "Europe", "Gavarnie");


... try { FileLocationID chartLocationID = chartService.createChartLocationID(userID, HelloSecDirPortlet.ROOT_DIR, HelloSecDirPortlet.ROOT_PATH + "ChartTest3");

ChartDescriptor chartDescriptor = chartService.createBar3DChart( ... chartLocationID, dataset); chartDescriptor.getChartInfo().getPlot().getSettings().getCategory(). ...

setRangeAxisLabel("height [m]"); chartDescriptor.getChartInfo().getPlot().getSettings().getCategory(). ... setDomainAxisLabel("name"); Image image = chartDescriptor.getFileInfo().getImage(); image.setWidth(950); image.setHeight(400); image.setQuality(1.0f); image.setType("JPEG"); Subtitle subtitle = new Subtitle(); subtitle.setText("Obviously this is not full list ;-)"); chartDescriptor.getChartInfo().setSubtitle(subtitle); chartDescriptor.getChartInfo().getPlot().setForegroundAlpha(0.25f);

chartService.setChartDescriptor(chartLocationID, chartDescriptor); chartService.setChartTitle(chartLocationID, "Waterfalls of the World"); } catch (Exception ie) {}...

Chart Service - summary

Check also:webapp/jsp/charts/view1.jspwebapp/jsp/charts/view2.jspwebapp/jsp/charts/view3.jspwebapp/jsp/charts/error.jsp

Datasets and chart descriptor are stored in SecDir as XML files, that are validated against XML Schemas (editing these files causes automatic chart regeneration when next getChartURL() is performed)More advanced examples:

GridSphere Services of SSH Session Server Framework (more information on Open Grid Portals web site)

Questions ?

For more information visit:

GridSphere http://www.gridsphere.org

GridLab http://www.gridlab.org

Open Grid Portals http://www.opengridportals.com

JFreeChart http://www.jfree.org/jfreechart/

Thank you

Documents

Enhancing portlets with charts and secure directory service Tomasz Kuczyński [email protected] Poznan Supercomputing and Networking Center