Java RrdDb.createSample方法代码示例

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
private void addValue(double value) throws IOException {
  try {
    // Open the existing file in r/w mode:
    RrdDb rrdDb = new RrdDb(_rrdPath, false, _rrdBackendFactory);
    try {
      // Create sample with the current timestamp:
      Sample sample = rrdDb.createSample();
      if (sample.getTime() > rrdDb.getLastUpdateTime()) {
        sample.setValue(_name, value);
        sample.update();
      }
    }
    finally {
      rrdDb.close();
    }
  }
  catch (RrdException e) {
    String msg = "Accessing JRobin statistics file '" + _rrdPath + "' failed! If the problem persists, delete the file so it will be recreated.";
    LOG.error(msg, e);
    throw new IOException(msg, e);
  }
}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
/**
 * This test fails because of
 * <a href="http://bugzilla.opennms.org/show_bug.cgi?id=2272">bug #2272</a>
 * in org.jrobin.core.Sample.
 */
@Test
@Ignore("fails due to bug 2272")
public void testSampleSetFloatingPointValueWithComma() throws Exception {
    File rrdFile = createRrdFile();
    
    RrdDb openedFile = m_strategy.openFile(rrdFile.getAbsolutePath());
    
    Sample sample = openedFile.createSample();
    sample.set("N:1,234");
    m_strategy.closeFile(openedFile);
    
    double[] values = sample.getValues();
    assertEquals("values list size", 1, values.length);
    assertEquals("values item 0", 1.234, values[0], 0.0);
}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
/**
 * This test fails because of
 * <a href="http://bugzilla.opennms.org/show_bug.cgi?id=2272">bug #2272</a>
 * in org.jrobin.core.Sample.
 */
@Test
@Ignore("fails due to bug 2272")
public void testSampleSetFloatingPointValueWithExtraJunk() throws Exception {
    File rrdFile = createRrdFile();
    
    RrdDb openedFile = m_strategy.openFile(rrdFile.getAbsolutePath());
    
    Sample sample = openedFile.createSample();
    
    ThrowableAnticipator ta = new ThrowableAnticipator();
    ta.anticipate(new Exception("Some exception that complains about bogus data"));
    try {
        sample.set("N:1.234 extra junk");
    } catch (Throwable t) {
        ta.throwableReceived(t);
    } finally {
        m_strategy.closeFile(openedFile);
    }
    ta.verifyAnticipated();
}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
@Test
public void testEntriesZeroTo100InRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(105); //Make sure all entries are recorded (5 is just a buffer for consolidation)
	RrdDb rrd = new RrdDb(jrbFileName);

	for(int i=0; i<100; i++) {
		long timestamp = startTime + 1 + (i * 60);
		Sample sample = rrd.createSample();
		sample.setAndUpdate(timestamp + ":" + i);
	}
	rrd.close();
	prepareGraph();
	expectMinorGridLines(4);
	expectMajorGridLine("  50");
	expectMinorGridLines(4);
	expectMajorGridLine(" 100");

	replay(imageWorker);

	this.valueAxis.draw();
	//Validate the calls to the imageWorker
	verify(imageWorker);

}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
@Test
public void testEntriesNeg50To0InRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(100);
	RrdDb rrd = new RrdDb(jrbFileName);

	for(int i=0; i<50; i++) {
		long timestamp = startTime + 1 + (i * 60);
		Sample sample = rrd.createSample();
		sample.setAndUpdate(timestamp + ":" + (i -50));
	}
	rrd.close();
	prepareGraph();
	expectMinorGridLines(2);
	expectMajorGridLine(" -40");
	expectMinorGridLines(3);
	expectMajorGridLine(" -20");
	expectMinorGridLines(3);

	replay(imageWorker);

	this.valueAxis.draw();
	//Validate the calls to the imageWorker
	verify(imageWorker);

}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
/**
 * 通过RrdDef创建RRD文件并初始化数据
 */
private void createRRDInitData(long startTime, long endTime,
							   String rootPath, String rrdName, RrdDef rrdDef) {
	try {

		RrdDb rrdDb = new RrdDb(rrdDef);
		// / by this point, rrd file can be found on your disk

		// 模拟一些测试数据
		//Math.sin(2 * Math.PI * (t / 86400.0)) * baseval;
		int baseval = 50;
		for (long t = startTime; t < endTime; t += 300) {
			Sample sample = rrdDb.createSample(t);
			double tmpval = Math.random() * baseval;
			double tmpval2 = Math.random() * baseval;
			sample.setValue("input", tmpval + 50);
			sample.setValue("output", tmpval2 + 50);
			sample.update();
		}
		System.out.println("[RrdDb init data success]");
		System.out.println("[Rrd path]:" + rrdDef.getPath());

		// rrdDb.dumpXml(rootPath + rrdName + "_rrd.xml")
		rrdDb.exportXml(rootPath + rrdName + ".xml");

		// If your RRD files are updated rarely, open them only when
		// necessary and close them as soon as possible.
		rrdDb.close();

		System.out.println("[RrdDb export xml success]");
	} catch (Exception e) {
		e.printStackTrace();

	}
}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
@Test
public void testSampleSetFloatingPointValueGood() throws Exception {
    File rrdFile = createRrdFile();
    
    RrdDb openedFile = m_strategy.openFile(rrdFile.getAbsolutePath());
    
    Sample sample = openedFile.createSample();
    sample.set("N:1.234");
    m_strategy.closeFile(openedFile);
    
    double[] values = sample.getValues();
    assertEquals("values list size", 1, values.length);
    assertEquals("values item 0", 1.234, values[0], 0.0);
}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
@Test
public void testOneEntryInRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(100);
	RrdDb rrd = new RrdDb(jrbFileName);
	long nowSeconds = new Date().getTime();
	long fiveMinutesAgo = nowSeconds - (5 * 60);
	Sample sample = rrd.createSample();
	sample.setAndUpdate(fiveMinutesAgo+":10");
	rrd.close();
	prepareGraph();
	checkForBasicGraph();
}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
@Test
public void testTwoEntriesInRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(100);
	RrdDb rrd = new RrdDb(jrbFileName);

	for(int i=0; i<2; i++) {
		long timestamp = startTime + 1 + (i * 60);
		Sample sample = rrd.createSample();
		sample.setAndUpdate(timestamp+":100");
	}
	rrd.close();
	prepareGraph();

	expectMajorGridLine("  90");
	expectMinorGridLines(1);
	expectMajorGridLine(" 100");
	expectMinorGridLines(1);
	expectMajorGridLine(" 110");
	expectMinorGridLines(1);
	expectMajorGridLine(" 120");
	expectMinorGridLines(1);

	replay(imageWorker);

	this.valueAxis.draw();
	//Validate the calls to the imageWorker
	verify(imageWorker);

}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
@Test
public void testEntriesNeg50To100InRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(155);
	RrdDb rrd = new RrdDb(jrbFileName);

	for(int i=0; i<150; i++) {
		long timestamp = startTime + 1 + (i * 60);
		Sample sample = rrd.createSample();
		sample.setAndUpdate(timestamp + ":" + (i -50));
	}
	rrd.close();
	prepareGraph();
	expectMajorGridLine(" -50");
	expectMinorGridLines(4);
	expectMajorGridLine("   0");
	expectMinorGridLines(4);
	expectMajorGridLine("  50");
	expectMinorGridLines(4);
	expectMajorGridLine(" 100");

	replay(imageWorker);

	this.valueAxis.draw();
	//Validate the calls to the imageWorker
	verify(imageWorker);

}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
@Test
public void testEntriesNeg55To105InRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(165);
	RrdDb rrd = new RrdDb(jrbFileName);

	for(int i=0; i<160; i++) {
		long timestamp = startTime + 1 + (i * 60);
		Sample sample = rrd.createSample();
		sample.setAndUpdate(timestamp + ":" + (i -55));
	}
	rrd.close();
	prepareGraph();
	/**
	 * Prior to JRB-12 fix, this was the behaviour.  Note the lack of a decent negative label
	expectMinorGridLines(3);
	expectMajorGridLine("   0");
	expectMinorGridLines(4);
	expectMajorGridLine(" 100");
	expectMinorGridLines(1);
	 */
	//New behaviour is better; no minor grid lines, which is interesting, but much better representation
	expectMajorGridLine(" -50");
	expectMajorGridLine("   0");
	expectMajorGridLine("  50");
	expectMajorGridLine(" 100");



	replay(imageWorker);

	this.valueAxis.draw();
	//Validate the calls to the imageWorker
	verify(imageWorker);

}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
/**
 * Test specifically for JRB-12 (http://issues.opennms.org/browse/JRB-12)
 * In the original, when the values go from -80 to 90 on a default height graph
 * (i.e. limited pixels available for X-axis labelling),ValueAxis gets all confused
 * and decides it can only display "0" on the X-axis  (there's not enough pixels
 * for more labels, and none of the Y-label factorings available work well enough
 * @throws FontFormatException
 */
@Test
public void testEntriesNeg80To90InRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(180);
	RrdDb rrd = new RrdDb(jrbFileName);

	for(int i=0; i<170; i++) {
		long timestamp = startTime + 1 + (i * 60);
		Sample sample = rrd.createSample();
		sample.setAndUpdate(timestamp + ":" + (i -80));
	}
	rrd.close();
	prepareGraph();
	/**
	 * Original behaviour; a single major X-axis label (0) only.
	expectMinorGridLines(4);
	expectMajorGridLine("   0");
	expectMinorGridLines(4);
	 */
	//New behaviour post JRB-12 fix:
	expectMajorGridLine(" -50");
	expectMajorGridLine("   0");
	expectMajorGridLine("  50");

	replay(imageWorker);

	this.valueAxis.draw();
	//Validate the calls to the imageWorker
	verify(imageWorker);

}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
/**
 * Test specifically for JRB-12 (http://issues.opennms.org/browse/JRB-12)
 * Related to testEntriesNeg80To90InRrd, except in the original code
 * this produced sensible labelling.  Implemented to check that the
 * changes don't break the sanity.
 * @throws FontFormatException
 */
@Test
public void testEntriesNeg80To80InRrd() throws IOException, RrdException, FontFormatException {
	createGaugeRrd(180);
	RrdDb rrd = new RrdDb(jrbFileName);

	for(int i=0; i<160; i++) {
		long timestamp = startTime + 1 + (i * 60);
		Sample sample = rrd.createSample();
		sample.setAndUpdate(timestamp + ":" + (i -80));
	}
	rrd.close();
	prepareGraph();

	// Original
	expectMinorGridLines(3);
	expectMajorGridLine(" -50");
	expectMinorGridLines(4);
	expectMajorGridLine("   0");
	expectMinorGridLines(4);
	expectMajorGridLine("  50");
	expectMinorGridLines(3);


	replay(imageWorker);

	this.valueAxis.draw();
	//Validate the calls to the imageWorker
	verify(imageWorker);

}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
Object execute() throws RrdException, IOException {
	String template = getOptionValue("t", "template");
	String[] dsNames = (template != null) ? new ColonSplitter(template).split() : null;
	String[] words = getRemainingWords();
	if (words.length < 3) {
		throw new RrdException("Insufficent number of parameters for rrdupdate command");
	}
	String path = words[1];
	RrdDb rrdDb = getRrdDbReference(path);
	try {
		if (dsNames != null) {
			// template specified, check datasource names
			for (String dsName : dsNames) {
				if (!rrdDb.containsDs(dsName)) {
					throw new RrdException("Invalid datasource name: " + dsName);
				}
			}
		}
		// parse update strings
		long timestamp = -1;
		for (int i = 2; i < words.length; i++) {
			String[] tokens = new ColonSplitter(words[i]).split();
			if (dsNames != null && dsNames.length + 1 != tokens.length) {
				throw new RrdException("Template requires " + dsNames.length + " values, " +
						(tokens.length - 1) + " value(s) found in: " + words[i]);
			}
			int dsCount = rrdDb.getHeader().getDsCount();
			if (dsNames == null && dsCount + 1 != tokens.length) {
				throw new RrdException("Expected " + dsCount + " values, " +
						(tokens.length - 1) + " value(s) found in: " + words[i]);
			}
			timestamp = Util.getTimestamp(tokens[0]);
			Sample sample = rrdDb.createSample(timestamp);
			for (int j = 1; j < tokens.length; j++) {
				if (dsNames == null) {
					sample.setValue(j - 1, parseDouble(tokens[j]));
				}
				else {
					sample.setValue(dsNames[j - 1], parseDouble(tokens[j]));
				}
			}
			sample.update();
		}
		return timestamp;
	}
	finally {
		releaseRrdDbReference(rrdDb);
	}
}
 

import org.jrobin.core.RrdDb; //导入方法依赖的package包/类
/**
 * {@inheritDoc}
 *
 * Creates a sample from the JRobin RrdDb and passes in the data provided.
 */
public void updateFile(final RrdDb rrdFile, final String owner, final String data) throws Exception {
    Sample sample = rrdFile.createSample();
    sample.setAndUpdate(data);
}