001
014
015 package com.liferay.portlet.admin.action;
016
017 import com.liferay.portal.kernel.util.ContentTypes;
018 import com.liferay.portal.kernel.util.ParamUtil;
019 import com.liferay.portal.kernel.util.StringBundler;
020 import com.liferay.portal.kernel.util.StringPool;
021 import com.liferay.portal.struts.PortletAction;
022 import com.liferay.portal.theme.ThemeDisplay;
023 import com.liferay.portal.util.WebKeys;
024
025 import java.awt.BasicStroke;
026 import java.awt.Color;
027 import java.awt.Font;
028
029 import java.io.OutputStream;
030
031 import javax.portlet.PortletConfig;
032 import javax.portlet.ResourceRequest;
033 import javax.portlet.ResourceResponse;
034
035 import org.apache.struts.action.ActionForm;
036 import org.apache.struts.action.ActionMapping;
037
038 import org.jfree.chart.ChartUtilities;
039 import org.jfree.chart.JFreeChart;
040 import org.jfree.chart.plot.DialShape;
041 import org.jfree.chart.plot.MeterInterval;
042 import org.jfree.chart.plot.MeterPlot;
043 import org.jfree.data.Range;
044 import org.jfree.data.general.DefaultValueDataset;
045 import org.jfree.data.general.ValueDataset;
046
047
050 public class ViewChartAction extends PortletAction {
051
052 @Override
053 public void serveResource(
054 ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
055 ResourceRequest resourceRequest, ResourceResponse resourceResponse)
056 throws Exception {
057
058 ThemeDisplay themeDisplay = (ThemeDisplay)resourceRequest.getAttribute(
059 WebKeys.THEME_DISPLAY);
060
061 String type = ParamUtil.getString(resourceRequest, "type", "max");
062 long maxMemory = ParamUtil.getLong(resourceRequest, "maxMemory");
063 long totalMemory = ParamUtil.getLong(resourceRequest, "totalMemory");
064 long usedMemory = ParamUtil.getLong(resourceRequest, "usedMemory");
065
066 ValueDataset valueDataset = null;
067
068 StringBundler sb = new StringBundler(5);
069
070 sb.append(themeDisplay.translate("used-memory"));
071 sb.append(StringPool.SPACE);
072 sb.append(StringPool.FORWARD_SLASH);
073 sb.append(StringPool.SPACE);
074
075 if (type.equals("total")) {
076 valueDataset = new DefaultValueDataset(
077 (usedMemory * 100) / totalMemory);
078
079 sb.append(themeDisplay.translate("total-memory"));
080 }
081 else {
082 valueDataset = new DefaultValueDataset(
083 (usedMemory * 100) / maxMemory);
084
085 sb.append(themeDisplay.translate("maximum-memory"));
086 }
087
088 MeterPlot meterPlot = getMeterPlot(themeDisplay, valueDataset);
089
090 JFreeChart jFreeChart = getJFreeChart(sb.toString(), meterPlot);
091
092 resourceResponse.setContentType(ContentTypes.IMAGE_JPEG);
093
094 OutputStream outputStream = resourceResponse.getPortletOutputStream();
095
096 ChartUtilities.writeChartAsPNG(outputStream, jFreeChart, 280, 180);
097 }
098
099 protected JFreeChart getJFreeChart(String title, MeterPlot meterPlot) {
100 JFreeChart jFreeChart = new JFreeChart(
101 title, new Font(null, Font.PLAIN, 13), meterPlot, true);
102
103 jFreeChart.removeLegend();
104 jFreeChart.setBackgroundPaint(Color.white);
105
106 return jFreeChart;
107 }
108
109 protected MeterPlot getMeterPlot(
110 ThemeDisplay themeDisplay, ValueDataset valueDataset) {
111
112 MeterPlot meterPlot = new MeterPlot(valueDataset);
113
114 meterPlot.addInterval(
115 new MeterInterval(
116 themeDisplay.translate("normal"), new Range(0.0D, 75D),
117 Color.lightGray, new BasicStroke(2.0F),
118 new Color(0, 255, 0, 64)));
119
120 meterPlot.addInterval(
121 new MeterInterval(
122 themeDisplay.translate("warning"), new Range(75D, 90D),
123 Color.lightGray, new BasicStroke(2.0F),
124 new Color(255, 255, 0, 64)));
125
126 meterPlot.addInterval(
127 new MeterInterval(
128 themeDisplay.translate("critical"), new Range(90D, 100D),
129 Color.lightGray, new BasicStroke(2.0F),
130 new Color(255, 0, 0, 128)));
131
132 meterPlot.setDialBackgroundPaint(Color.white);
133 meterPlot.setDialShape(DialShape.PIE);
134 meterPlot.setDialOutlinePaint(Color.gray);
135 meterPlot.setTickLabelFont(new Font(null, Font.PLAIN, 10));
136 meterPlot.setTickLabelPaint(Color.darkGray);
137 meterPlot.setTickLabelsVisible(true);
138 meterPlot.setTickPaint(Color.lightGray);
139 meterPlot.setTickSize(5D);
140 meterPlot.setMeterAngle(180);
141 meterPlot.setNeedlePaint(Color.darkGray);
142 meterPlot.setRange(new Range(0.0D, 100D));
143 meterPlot.setValueFont(new Font(null, Font.PLAIN, 10));
144 meterPlot.setValuePaint(Color.black);
145 meterPlot.setUnits("%");
146
147 return meterPlot;
148 }
149
150 @Override
151 protected boolean isCheckMethodOnProcessAction() {
152 return _CHECK_METHOD_ON_PROCESS_ACTION;
153 }
154
155 private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
156
157 }