JrrdTest.java

package org.rrd4j.core.jrrd;

import java.io.IOException;
import java.net.URL;
import java.util.Date;

import org.junit.Assert;
import org.junit.Ignore;
import org.junit.Test;

public class JrrdTest {

    //version 0003
    //little endian
    //64 bits
    //alignement on long
    @Test
    public void test_3_l_64_8() throws IOException {
        testFile("/rrdtool/0003l648.rrd", "0003");
    }

    //version 0003
    //little endian
    //32 bits
    //alignement on long
    @Test
    public void test_3_l_32_8() throws IOException {
        testFile("/rrdtool/0003l328.rrd", "0003");
    }

    //version 0003
    //little endian
    //32 bits
    //alignement on int
    @Test
    public void test_3_l_32_4() throws IOException {
        testFile("/rrdtool/0003l324.rrd", "0003");
    }

    //version 0003
    //big endian
    //32 bits
    //alignement on long
    @Test
    public void test_3_b_32_8() throws IOException {
        testFile("/rrdtool/0003b328.rrd", "0003");
    }

    //version 0001
    //big endian
    //64 bits
    //alignements on long
    @Test
    public void test_1_b_64_8() throws IOException {
        testFile("/rrdtool/0001b648.rrd", "0001");
    }

    //version 0001
    //big endian
    //32 bits
    //alignement on long
    @Test
    @Ignore
    public void test_1_b_32_8() throws IOException {
        testFile("/rrdtool/0001b328.rrd", "0001");
    }

    @Test
    public void test_1_l_32_4() throws IOException {
        testFile("/rrdtool/0001l324.rrd", "0001");
    }

    @Test
    public void test_1_l_64_8() throws IOException {
        testFile("/rrdtool/0001l648.rrd", "0001");
    }

    private void testFile(String file, String version) throws IOException {
        URL url = getClass().getResource(file);
        try(RRDatabase rrd = new RRDatabase(url.getFile());) {
            Assert.assertEquals("Invalid date", new Date(920808900000L), rrd.getLastUpdate());
            Assert.assertEquals("Invalid number of archives", 2, rrd.getNumArchives());
            Assert.assertEquals("Invalid number of datasources", 2, rrd.getDataSourcesName().size());
            Assert.assertEquals("Invalid heartbeat for datasource 0", 600, rrd.getDataSource(0).getMinimumHeartbeat());
            Assert.assertEquals("Invalid heartbeat for datasource 1", 600, rrd.getDataSource(1).getMinimumHeartbeat());
            Assert.assertEquals("Invalid version", version, rrd.header.getVersion());
            Assert.assertEquals("Invalid number of row", 24, rrd.getArchive(0).getRowCount());
            Assert.assertEquals("Invalid number of row", 10, rrd.getArchive(1).getRowCount());
            boolean b0 = "12405".equals(rrd.getDataSource(0).getPDPStatusBlock().lastReading);
            boolean b1 = "UNKN".equals(rrd.getDataSource(1).getPDPStatusBlock().lastReading);
            boolean b2 = "3".equals(rrd.getDataSource(1).getPDPStatusBlock().lastReading);
            Assert.assertTrue("Failed getting last reading", b0 && (b1 || b2));
            if("0003".equals(version) ) {
                Assert.assertEquals("bad primary value", 1.43161853E7, rrd.getArchive(0).getCDPStatusBlock(0).primary_value, 1);
            }
            Assert.assertEquals("bad primary value", 1.4316557620000001E7, rrd.getArchive(1).getCDPStatusBlock(0).value, 1);
            rrd.rrdFile.seek( rrd.getArchive(0).dataOffset + 16 * rrd.getArchive(0).currentRow);
            double speed = readDouble(rrd.rrdFile);
            double weight = readDouble(rrd.rrdFile);
            Assert.assertEquals(1.4316185300e+07, speed, 1e-7);
            Assert.assertEquals(3, weight, 1e-7);
            DataChunk data = rrd.getData(ConsolidationFunctionType.AVERAGE, 920802300, 920808900, 300);
            Assert.assertEquals(0.02, data.toPlottable("speed").getValue(920802300), 1e-7);
            Assert.assertEquals(1.0, data.toPlottable("weight").getValue(920802300), 1e-7);
            
            // Just check it does not crash
            rrd.getData(ConsolidationFunctionType.AVERAGE, Integer.MAX_VALUE - 100000, Integer.MAX_VALUE - 80000, 300);
        }
        
    }

    Double readDouble(RRDFile rrdFile) throws IOException {
        return rrdFile.readDouble();
    }

}