Examples with DownsampleFunction com.srotya.sidewinder.core.functions.iterative.DownsampleFunction used on opensource projects

Example 1 with DownsampleFunction

use of com.srotya.sidewinder.core.functions.iterative.DownsampleFunction in project sidewinder by srotya.

the class TestDownSamplingIFunction method testBasicSumDownSampling.

@Test
public void testBasicSumDownSampling() throws IOException {
    Field tField = new TimeField(measurement, new LinkedByteString().concat(new ByteString("time")), 121213, new HashMap<>());
    long ts = 1546755994280L;
    for (int i = 0; i < 100; i++) {
        tField.addDataPoint(measurement, ts + i * 1000);
    }
    Field vField = new ValueField(measurement, new LinkedByteString().concat(new ByteString("field1")), 121213, new HashMap<>());
    for (int i = 0; i < 100; i++) {
        vField.addDataPoint(measurement, i);
    }
    DataPointIterator itr = new DataPointIterator(tField.queryReader(null, new NoLock()), vField.queryReader(null, new NoLock()));
    DownsampleFunction f = new DownsampleFunction(itr, 5, TimeUnit.SECONDS, ((x, y) -> (x + y)));
    int c = 0;
    while (f.hasNext()) {
        DataPoint next = f.next();
        if (c < 20) {
            assertEquals(ts + c * 1000 * 5, next.getTimestamp());
        }
        c++;
    }
    assertEquals(21, c);
    itr = new DataPointIterator(tField.queryReader(null, new NoLock()), vField.queryReader(null, new NoLock()));
    f = new DownsampleFunction(itr, 10, TimeUnit.SECONDS, ((x, y) -> (x + y) / 2));
    c = 0;
    while (f.hasNext()) {
        DataPoint next = f.next();
        if (c < 10) {
            assertEquals(ts + c * 1000 * 10, next.getTimestamp());
        }
        c++;
    }
    assertEquals(10, c, 1);
}

Example 2 with DownsampleFunction

use of com.srotya.sidewinder.core.functions.iterative.DownsampleFunction in project sidewinder by srotya.

the class TestDownSamplingIFunction method testAverageDownsampling.

@Test
public void testAverageDownsampling() throws IOException {
    Field tField = new TimeField(measurement, new LinkedByteString().concat(new ByteString("time")), 121213, new HashMap<>());
    long ts = 1546755994280L;
    for (int i = 0; i < 100; i++) {
        tField.addDataPoint(measurement, ts + i * 1000);
    }
    Field vField = new ValueField(measurement, new LinkedByteString().concat(new ByteString("field1")), 121213, new HashMap<>());
    for (int i = 0; i < 100; i++) {
        vField.addDataPoint(measurement, 1L);
    }
    DataPointIterator itr = new DataPointIterator(tField.queryReader(null, new NoLock()), vField.queryReader(null, new NoLock()));
    DownsampleFunction f = new DownsampleFunction(itr, 5, TimeUnit.SECONDS, ((x, y) -> (x + y)));
    int c = 0;
    while (f.hasNext()) {
        DataPoint next = f.next();
        if (c < 20) {
            assertEquals(ts + c * 1000 * 5, next.getTimestamp());
            assertEquals(5, next.getLongValue());
        }
        c++;
    }
    assertEquals(21, c);
    itr = new DataPointIterator(tField.queryReader(null, new NoLock()), vField.queryReader(null, new NoLock()));
    f = new DownsampleFunction(itr, 10, TimeUnit.SECONDS, ((x, y) -> (x + y) / 2));
    c = 0;
    while (f.hasNext()) {
        DataPoint next = f.next();
        if (c < 10) {
            assertEquals(ts + c * 1000 * 10, next.getTimestamp());
            assertEquals(1, next.getLongValue());
        }
        c++;
    }
    assertEquals(10, c, 1);
}