import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * 根据定义的XML模板生成图片
 *
 * @param rootPath
 * @param tempFileName
 */
private void graphByTemplate(String rootPath, String tempFileName) {
	try {
		System.out.println("[rrd graph by xml template start...]");
		RrdGraphDefTemplate defTemplate = new RrdGraphDefTemplate(
				new InputSource(rootPath + tempFileName));
		// setVariable 设置XML template的变量
		defTemplate.setVariable("startTime", "20101001 00:00");
		defTemplate.setVariable("endTime", "20101031 23:59");
		defTemplate.setVariable("in_rrd_file", rootPath + "demo_flow.rrd");
		defTemplate.setVariable("out_rrd_file", rootPath + "demo_flow.rrd");
		RrdGraph graph = new RrdGraph(defTemplate.getRrdGraphDef());

		BufferedImage image = new BufferedImage(graph.getRrdGraphInfo()
				.getWidth(), graph.getRrdGraphInfo().getHeight(),
				BufferedImage.TYPE_INT_RGB);
		graph.render(image.getGraphics());
		File imgFile = new File(rootPath + "demo_graph_tmp.PNG");
		ImageIO.write(image, "PNG", imgFile);//
		System.out.println("[rrd graph by xml template success.]");
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
public static void graphByDef(RrdGraphDef rgdef) {
	try {

		RrdGraph graph = new RrdGraph(rgdef);
		System.out.println("[rrd graph info:]"
				+ graph.getRrdGraphInfo().dump());

		// 如果filename没有设置，只是在内存中，可以调用下面的方法再次生成图片文件
		if ("-".equals(graph.getRrdGraphInfo().getFilename())) {
			createImgFile(graph, "jrobin-graph.jpg");
		}
		System.out.println("[Jrobin graph by RrdGraphDef success.]");
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
@Test
public void testPrint() throws Exception {
    long end = System.currentTimeMillis();
    long start = end - (24 * 60 * 60 * 1000);
    String[] command = new String[] {
            "--start=" + start,
            "--end=" + end,
            "CDEF:something=1",
            "PRINT:something:AVERAGE:\"%le\""
    };

    RrdGraphDef graphDef = ((JRobinRrdStrategy)m_strategy).createGraphDef(new File(""), command);
    RrdGraph graph = new RrdGraph(graphDef);
    assertNotNull("graph object", graph);
    
    RrdGraphInfo info = graph.getRrdGraphInfo();
    assertNotNull("graph info object", info);
    
    String[] printLines = info.getPrintLines();
    assertNotNull("graph printLines", printLines);
    assertEquals("graph printLines size", 1, printLines.length);
    assertEquals("graph printLines item 0", "1.000000e+00", printLines[0]);
    double d = Double.parseDouble(printLines[0]);
    assertEquals("graph printLines item 0 as a double", 1.0, d, 0.0);
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
Object execute() throws RrdException, IOException {
	gdef = getGraphDef();

	// create diagram finally
	RrdGraphInfo info = new RrdGraph(gdef).getRrdGraphInfo();
	if (info.getFilename().equals(RrdGraphConstants.IN_MEMORY_IMAGE)) {
		println(new String(info.getBytes()));
	}
	else {
		println(info.getWidth() + "x" + info.getHeight());
		String[] plines = info.getPrintLines();
		for (String pline : plines) {
			println(pline);
		}
		if (info.getImgInfo() != null && info.getImgInfo().length() > 0) {
			println(info.getImgInfo());
		}
	}
	return info;
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
public byte[] graph(Range range, int width, int height, boolean maxHidden) throws IOException {
	// static init of the AppContext ClassLoader
	AppContextClassLoaderLeakPrevention.dummy();

	try {
		// Rq : il pourrait être envisagé de récupérer les données dans les fichiers rrd ou autre stockage
		// puis de faire des courbes en sparklines html (écrites dans la page html) ou jfreechart

		// create common part of graph definition
		final RrdGraphDef graphDef = new RrdGraphDef();
		if (Locale.CHINESE.getLanguage()
				.equals(I18N.getResourceBundle().getLocale().getLanguage())) {
			graphDef.setSmallFont(new Font(Font.MONOSPACED, Font.PLAIN, 10));
			graphDef.setLargeFont(new Font(Font.MONOSPACED, Font.BOLD, 12));
		}

		initGraphSource(graphDef, height, maxHidden);

		initGraphPeriodAndSize(range, width, height, graphDef);

		graphDef.setImageFormat("png");
		graphDef.setFilename("-");
		// il faut utiliser le pool pour les performances
		// et pour éviter des erreurs d'accès concurrents sur les fichiers
		// entre différentes générations de graphs et aussi avec l'écriture des données
		graphDef.setPoolUsed(true);
		return new RrdGraph(graphDef).getRrdGraphInfo().getBytes();
	} catch (final RrdException e) {
		throw createIOException(e);
	}
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * Creates a graphics binary of this statistics in PNG format.
 *
 * @param range the range to be shown
 * @param width the width of the created PNG
 * @param height the height of the created PNG
 * @return the created binary image data
 * @throws IOException if image creation failed
 */
public byte[] createGraph(Range range, int width, int height) throws IOException {
  try {
    // Create the graph definition:
    RrdGraphDef graphDef = new RrdGraphDef();
    graphDef.setPoolUsed(true);
    graphDef.setFilename("-"); // Important for in-memory generation!

    // Set datasources:
    graphDef.datasource("average", _rrdPath, _name, FUNCTION_AVG, _rrdBackendFactory.getFactoryName());
    graphDef.datasource("max", _rrdPath, _name, FUNCTION_MAX, _rrdBackendFactory.getFactoryName());
    graphDef.setMinValue(0);

    // Set graphics stuff:
    graphDef.setImageFormat("png");
    graphDef.area("average", new GradientPaint(0, 0, Color.RED, 0, height, Color.GREEN, false), "Mean");
    graphDef.line("max", Color.BLUE, "Maximum");
    graphDef.gprint("average", FUNCTION_AVG, "Mean: %9.0f " + _unit + "\\r");
    graphDef.gprint("max", FUNCTION_MAX, "Maximum: %9.0f " + _unit + "\\r");
    graphDef.setWidth(width);
    graphDef.setHeight(height);

    setGraphStartEndTime(graphDef, range);
    setGraphTitle(graphDef, _label, range, width);

    return new RrdGraph(graphDef).getRrdGraphInfo().getBytes();
  }
  catch (final RrdException e) {
    throw new IOException(e);
  }
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * ImageIO 生成图片文件
 */
private void createImgFile(RrdGraph graph, String imgFileFullName) {

	try {
		BufferedImage image = new BufferedImage(graph.getRrdGraphInfo()
				.getWidth(), graph.getRrdGraphInfo().getHeight(),
				BufferedImage.TYPE_INT_RGB);
		graph.render(image.getGraphics());
		File imgFile = new File(imgFileFullName);
		ImageIO.write(image, "PNG", imgFile);
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * ImageIO 生成图片文件
 */
public static void createImgFile(RrdGraph graph, String imgFileName) {

	try {
		BufferedImage image = new BufferedImage(graph.getRrdGraphInfo()
				.getWidth(), graph.getRrdGraphInfo().getHeight(),
				BufferedImage.TYPE_INT_RGB);
		graph.render(image.getGraphics());
		File imgFile = new File(imgFileName);
		ImageIO.write(image, "PNG", imgFile);
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * {@inheritDoc}
 *
 * This constructs a graphDef by parsing the rrdtool style command and using
 * the values to create the JRobin graphDef. It does not understand the 'AT
 * style' time arguments however. Also there may be some rrdtool parameters
 * that it does not understand. These will be ignored. The graphDef will be
 * used to construct an RrdGraph and a PNG image will be created. An input
 * stream returning the bytes of the PNG image is returned.
 */
public RrdGraphDetails createGraphReturnDetails(final String command, final File workDir) throws IOException, org.opennms.netmgt.rrd.RrdException {

    try {
        String[] commandArray = tokenize(command, " \t", false);

        RrdGraphDef graphDef = createGraphDef(workDir, commandArray);
        graphDef.setSignature("OpenNMS/JRobin");

        RrdGraph graph = new RrdGraph(graphDef);

        /*
         * We use a custom RrdGraphDetails object here instead of the
         * DefaultRrdGraphDetails because we won't have an InputStream
         * available if no graphing commands were used, e.g.: if we only
         * use PRINT or if the user goofs up a graph definition.
         * 
         * We want to throw an RrdException if the caller calls
         * RrdGraphDetails.getInputStream and no graphing commands were
         * used.  If they just call RrdGraphDetails.getPrintLines, though,
         * we don't want to throw an exception.
         */
        return new JRobinRrdGraphDetails(graph, command);
    } catch (Throwable e) {
        log().error("JRobin: exception occurred creating graph: " + e.getMessage(), e);
        throw new org.opennms.netmgt.rrd.RrdException("An exception occurred creating the graph: " + e.getMessage(), e);
    }
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
@Test
public void testCommentWithNewlines() throws Exception {
    long end = System.currentTimeMillis();
    long start = end - (24 * 60 * 60 * 1000);
    String[] command = new String[] {
            "--start=" + start,
            "--end=" + end,
            "COMMENT:foo\\n"
    };
    String[] command2 = new String[] {
            "--start=" + start,
            "--end=" + end,
            "COMMENT:foo\\n",
            "COMMENT:foo2\\n"
    };

    RrdGraphDef graphDef = ((JRobinRrdStrategy)m_strategy).createGraphDef(new File(""), command);
    RrdGraph graph = new RrdGraph(graphDef);
    assertNotNull("graph object", graph);
    
    int firstHeight = graph.getRrdGraphInfo().getHeight();

    RrdGraphDef graphDef2 = ((JRobinRrdStrategy)m_strategy).createGraphDef(new File(""), command2);
    RrdGraph graph2 = new RrdGraph(graphDef2);
    assertNotNull("second graph object", graph2);
    
    int secondHeight = graph2.getRrdGraphInfo().getHeight();

    assertFalse("first graph height " + firstHeight + " and second graph height " + secondHeight + " should not be equal... there should be another newline in the second one making it taller", firstHeight == secondHeight);
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
@Test
public void testGprintWithNewlines() throws Exception {
    long end = System.currentTimeMillis();
    long start = end - (24 * 60 * 60 * 1000);
    String[] command = new String[] {
            "--start=" + start,
            "--end=" + end,
            "CDEF:a=1",
            "GPRINT:a:AVERAGE:\"%8.2lf\\n\""
    };
    String[] command2 = new String[] {
            "--start=" + start,
            "--end=" + end,
            "CDEF:a=1",
            "CDEF:b=1",
            "GPRINT:a:AVERAGE:\"%8.2lf\\n\"",
            "GPRINT:b:AVERAGE:\"%8.2lf\\n\""
    };

    RrdGraphDef graphDef = ((JRobinRrdStrategy)m_strategy).createGraphDef(new File(""), command);
    RrdGraph graph = new RrdGraph(graphDef);
    assertNotNull("graph object", graph);
    
    int firstHeight = graph.getRrdGraphInfo().getHeight();

    RrdGraphDef graphDef2 = ((JRobinRrdStrategy)m_strategy).createGraphDef(new File(""), command2);
    RrdGraph graph2 = new RrdGraph(graphDef2);
    assertNotNull("second graph object", graph2);
    
    int secondHeight = graph2.getRrdGraphInfo().getHeight();

    assertFalse("first graph height " + firstHeight + " and second graph height " + secondHeight + " should not be equal... there should be another line with a newline in the second one making it taller", firstHeight == secondHeight);
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
private void prepareFrame() throws RrdException {
    gDef = new RrdGraphDef();
    gDef.setTimePeriod(start - 5, start);
    gDef.setImageBorder(Color.WHITE, 0);
    gDef.setTitle(graphTitle);
    gDef.setVerticalLabel(graphYLabel);
    gDef.setTimeAxisLabel(graphXLabel);
    gDef.datasource("a", rrd, "a", "AVERAGE", "MEMORY");
    gDef.datasource( "avg", "a", "AVERAGE");
    gDef.area("a", Color.decode("0xb6e4"), "Real");
    gDef.line("avg", Color.RED,  "[email protected]", 2);
    gDef.gprint("a", "MIN", "@lmin = @2 [email protected]");
    gDef.gprint("a", "MAX", "max = @2 [email protected]");
    gDef.gprint("a", "AVERAGE", "avg = @2 [email protected]");
    gDef.time("@t", "MMM dd, yyyy -  HH:mm:ss", start);
    gDef.time("to  @[email protected]", "HH:mm:ss");
    gDef.comment("@[email protected]");  // some spacing
    
    // create graph
    graph = new RrdGraph(gDef);

    // add swing components
    graphPanel = new GUIGraphPanel(graph);
    graphPanel.setGraphDimension(frame.getContentPane().getSize());        
    jpOutTab.add(graphPanel);
    jtp.setSelectedIndex(1);  // switch to output tab
    
    // listener to re-render when the window is resized
    jpOutTab.addComponentListener(new ComponentAdapter() {
        public void componentResized(ComponentEvent e) {
            graphPanel.setGraphDimension(frame.getContentPane().getSize());
        }
    });
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
private void prepareFrame() throws RrdException {
    gDef = new RrdGraphDef();
    gDef.setTimePeriod(START - 10, START);
    gDef.setImageBorder(Color.WHITE, 0);
    gDef.setTitle(graphTitle);
    gDef.setVerticalLabel(graphYLabel);
    gDef.setTimeAxisLabel(graphXLabel);
    gDef.datasource("a", rrd, "a", "AVERAGE", "MEMORY");
    gDef.datasource( "avg", "a", "AVERAGE");
    gDef.area("a", Color.decode("0xb6e4"), "Real");
    gDef.line("avg", Color.RED,  "[email protected]");
    gDef.gprint("a", "MIN", "min = @2 [email protected]");
    gDef.gprint("a", "MAX", "max = @2 [email protected]");
    gDef.gprint("a", "AVERAGE", "avg = @2 ms");
    gDef.time("@[email protected] period: @t", "MMM dd, yyyy    HH:mm:ss", START);
    gDef.time("to  @[email protected]", "HH:mm:ss");

    // create graph
    graph = new RrdGraph(gDef);

    // create swing components
    graphPanel = new GUIGraphPanel(graph);
    frame = new JFrame("Monitor");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(graphPanel);
    frame.pack();
    frame.addComponentListener(new ComponentAdapter() {
        public void componentResized(ComponentEvent e) {
            Dimension d = frame.getContentPane().getSize();
            graphPanel.setGraphDimension(d);
        }
    });
    frame.setBounds(100, 100, 500, 400);
    frame.setVisible(true);
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * 直接定义画图模板生成图片
 *
 * @param rootPath
 * @param imgFileName
 */
private void graphByGraphDef(String rootPath, String imgFileName) {
	try {
		System.out.println("[rrd graph by RrdGraphDef start...]");
		// 2010-10-01:1285862400L 2010-11-01:1288540800L
		long startTime = Util.getTimestamp(2010, 10 - 1, 1);
		long endTime = Util.getTimestamp(2010, 10 - 1, 31);

		RrdGraphDef rgdef = new RrdGraphDef();
		// If the filename is set to '-' the image will be created only in
		// memory (no file will be created).
		// rgdef.setFilename("-");
		rgdef.setFilename(rootPath + imgFileName);

		// "PNG", "GIF" or "JPG"
		rgdef.setImageFormat("PNG");
		// rgdef.setTimeSpan(startTime, endTime);
		rgdef.setStartTime(startTime);
		rgdef.setEndTime(endTime);

		rgdef.setAntiAliasing(false);
		rgdef.setSmallFont(new Font("Monospaced", Font.PLAIN, 11));
		rgdef.setLargeFont(new Font("SansSerif", Font.BOLD, 14));

		rgdef.setTitle("JRobin graph by RrdGraphDef demo");
		// default 400
		rgdef.setWidth(500);
		// default 100
		rgdef.setHeight(200);

		// 一般不需要设置这个参数
		// rgdef.setStep(86400);

		rgdef.setVerticalLabel("transfer speed [bits/sec]");

		rgdef.datasource("in", rootPath + "demo_flow.rrd", "input",
				"AVERAGE");
		rgdef.datasource("out", rootPath + "demo_flow.rrd", "output",
				"AVERAGE");
		rgdef.datasource("in8", "in,8,*");
		rgdef.datasource("out8", "out,8,*");
		// PS：先画域的再画线的，否则线会被域遮盖
		rgdef.area("out8", new Color(0, 206, 0), "output traffic");
		rgdef.line("in8", Color.BLUE, "input traffic\\l");

		// \\l->左对齐 \\c->中间对齐 \\r->右对齐 \\j->自适应
		// \\s-> \\g->glue \\J->
		rgdef.gprint("in8", "MAX", "maxIn=%.2f %sbits/sec");
		rgdef.gprint("out8", "MAX", "maxOut=%.2f %sbits/sec\\l");
		rgdef.gprint("in8", "AVERAGE", "avgIn=%.2f %sbits/sec");
		rgdef.gprint("out8", "AVERAGE", "avgOut=%.2f %sbits/sec\\l");
		rgdef.gprint("in8", "TOTAL", "totalIn=%.2f %sbits/sec");
		rgdef.gprint("out8", "TOTAL", "totalOut=%.2f %sbits/sec\\l");
		rgdef.comment("画图测试");

		RrdGraph graph = new RrdGraph(rgdef);
		System.out.println("[rrd graph info:]"
				+ graph.getRrdGraphInfo().dump());
		// 如果filename没有设置，只是在内存中，可以调用下面的方法再次生成图片文件
		if ("-".equals(graph.getRrdGraphInfo().getFilename())) {
			createImgFile(graph, rootPath + imgFileName);
		}
		System.out.println("[rrd graph by RrdGraphDef success.]");
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
GUIGraphPanel(RrdGraph graph) {
           this.graph = graph;
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * <p>Constructor for JRobinRrdGraphDetails.</p>
 *
 * @param rrdGraph a {@link org.jrobin.graph.RrdGraph} object.
 * @param graphCommand a {@link java.lang.String} object.
 */
public JRobinRrdGraphDetails(RrdGraph rrdGraph, String graphCommand) {
    m_rrdGraph = rrdGraph;
    m_graphCommand = graphCommand;
}
 

import org.jrobin.graph.RrdGraph; //导入依赖的package包/类
/**
 * <p>getRrdGraph</p>
 *
 * @return a {@link org.jrobin.graph.RrdGraph} object.
 */
public RrdGraph getRrdGraph() {
    return m_rrdGraph;
}