Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package org.miloss.fgsms.services.rs.impl.reports.ws; import java.io.File; import java.io.IOException; import java.io.OutputStreamWriter; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.util.ArrayList; import java.util.List; import javax.xml.ws.WebServiceContext; import org.apache.log4j.Level; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.DefaultCategoryDataset; import org.miloss.fgsms.common.DBUtils; import org.miloss.fgsms.common.UserIdentityUtil; import org.miloss.fgsms.common.Utility; import org.miloss.fgsms.services.interfaces.common.SecurityWrapper; import org.miloss.fgsms.services.interfaces.common.TimeRange; import static org.miloss.fgsms.services.rs.impl.Reporting.getFilePathDelimitor; import static org.miloss.fgsms.services.rs.impl.Reporting.pixelHeightCalc; /** * * @author AO */ public class SuccessFailureCountByHostingServer extends BaseWebServiceReport { /** * {@inheritDoc} */ @Override public String GetDisplayName() { return "Success/Failure Count by Hosting Server"; } /** * {@inheritDoc} */ @Override public void generateReport(OutputStreamWriter data, List<String> urls, String path, List<String> files, TimeRange range, String currentuser, SecurityWrapper classification, WebServiceContext ctx) throws IOException { if (!UserIdentityUtil.hasGlobalAdministratorRole(currentuser, "SUCCESS_FAILURE_COUNT_BY_HOSTING_SERVER", classification, ctx)) { data.append("<h2>Access for " + GetDisplayName() + " was denied for non-global admin users</h2>"); } Connection con = Utility.getPerformanceDBConnection(); try { PreparedStatement cmd = null; ResultSet rs = null; DefaultCategoryDataset set = new DefaultCategoryDataset(); JFreeChart chart = null; data.append("<hr /><h2>").append(GetDisplayName()).append("</h2>"); data.append( "This represents Web Application Server utilization (host) by success and failure rates.<br />"); data.append( "<table class=\"table table-hover\"><tr><th>Host</th><th>Successes</th><th>Failures</th></tr>"); List<String> dcs = new ArrayList<String>(); try { cmd = con.prepareStatement("select hostingsource from RawData group by hostingsource;"); rs = cmd.executeQuery(); while (rs.next()) { dcs.add(rs.getString(1)); } } catch (Exception ex) { log.log(Level.WARN, null, ex); } finally { DBUtils.safeClose(rs); DBUtils.safeClose(cmd); } try { // itemcount = dcs.size(); for (int i = 0; i < dcs.size(); i++) { data.append("<tr><td>").append(Utility.encodeHTML(dcs.get(i))).append("</td>"); int success = 0; int failures = 0; try { cmd = con.prepareStatement( "select count(*) from RawData where hostingsource=? and success=false and UTCdatetime > ? and UTCdatetime < ?;"); cmd.setString(1, dcs.get(i)); cmd.setLong(2, range.getStart().getTimeInMillis()); cmd.setLong(3, range.getEnd().getTimeInMillis()); rs = cmd.executeQuery(); try { if (rs.next()) { failures = rs.getInt(1); } } catch (Exception ex) { log.log(Level.DEBUG, null, ex); } } catch (Exception ex) { log.log(Level.WARN, null, ex); } finally { DBUtils.safeClose(rs); DBUtils.safeClose(cmd); } try { cmd = con.prepareStatement( "select count(*) from RawData where hostingsource=? and success=true and UTCdatetime > ? and UTCdatetime < ?;"); cmd.setString(1, dcs.get(i)); cmd.setLong(2, range.getStart().getTimeInMillis()); cmd.setLong(3, range.getEnd().getTimeInMillis()); rs = cmd.executeQuery(); try { if (rs.next()) { success = rs.getInt(1); } } catch (Exception ex) { log.log(Level.DEBUG, null, ex); } } catch (Exception ex) { log.log(Level.WARN, null, ex); } finally { DBUtils.safeClose(rs); DBUtils.safeClose(cmd); } data.append("<td>").append(success + "").append("</td>"); data.append("<td>").append(failures + "").append("</td></tr>"); if (success > 0) { set.addValue(success, dcs.get(i) + " Success", dcs.get(i) + " Success"); } if (failures > 0) { set.addValue(failures, dcs.get(i) + " Failures", dcs.get(i) + " Failures"); } } } catch (Exception ex) { log.log(Level.ERROR, "Error generating chart information.", ex); } chart = org.jfree.chart.ChartFactory.createBarChart(GetDisplayName(), "Hosting Servers", "", set, PlotOrientation.HORIZONTAL, true, false, false); data.append("</table>"); try { ChartUtilities.saveChartAsPNG(new File( path + getFilePathDelimitor() + "image_" + this.getClass().getSimpleName() + ".png"), chart, 1500, pixelHeightCalc(set.getRowCount())); } catch (IOException ex) { log.log(Level.ERROR, "Error saving chart image for request", ex); } data.append("<img src=\"image_").append(this.getClass().getSimpleName()).append(".png\">"); files.add(path + getFilePathDelimitor() + "image_" + this.getClass().getSimpleName() + ".png"); } catch (Exception ex) { log.log(Level.ERROR, null, ex); } finally { DBUtils.safeClose(con); } } }