@Test
public void addPointLong4BytesNegative() throws Exception {
setupAddPointStorage();
HashMap<String, String> tags = new HashMap<String, String>(1);
tags.put("host", "web01");
tsdb.addPoint("sys.cpu.user", 1356998400, -65537, tags).joinUninterruptibly();
final byte[] row = new byte[] {0, 0, 1, 0x50, (byte) 0xE2, 0x27, 0, 0, 0, 1, 0, 0, 1};
final byte[] value = storage.getColumn(row, new byte[] {0, 3});
assertNotNull(value);
assertEquals(-65537, Bytes.getInt(value));
}
@Test
public void addPointFloatPrecision() throws Exception {
setupAddPointStorage();
HashMap<String, String> tags = new HashMap<String, String>(1);
tags.put("host", "web01");
tsdb.addPoint("sys.cpu.user", 1356998400, 42.5123459999F, tags).joinUninterruptibly();
final byte[] row = new byte[] {0, 0, 1, 0x50, (byte) 0xE2, 0x27, 0, 0, 0, 1, 0, 0, 1};
final byte[] value = storage.getColumn(row, new byte[] {0, 11});
assertNotNull(value);
// should have 7 digits of precision
assertEquals(42.512345F, Float.intBitsToFloat(Bytes.getInt(value)), 0.0000001);
}
@Test
public void addPointBothSameTimeIntAndFloatMs() throws Exception {
// this is an odd situation that can occur if the user puts an int and then
// a float (or vice-versa) with the same timestamp. What happens in the
// aggregators when this occurs?
setupAddPointStorage();
HashMap<String, String> tags = new HashMap<String, String>(1);
tags.put("host", "web01");
tsdb.addPoint("sys.cpu.user", 1356998400500L, 42, tags).joinUninterruptibly();
tsdb.addPoint("sys.cpu.user", 1356998400500L, 42.5F, tags).joinUninterruptibly();
final byte[] row = new byte[] {0, 0, 1, 0x50, (byte) 0xE2, 0x27, 0, 0, 0, 1, 0, 0, 1};
byte[] value = storage.getColumn(row, new byte[] {(byte) 0xF0, 0, 0x7D, 0});
assertEquals(2, storage.numColumns(row));
assertNotNull(value);
assertEquals(42, value[0]);
value = storage.getColumn(row, new byte[] {(byte) 0xF0, 0, 0x7D, 11});
assertNotNull(value);
// should have 7 digits of precision
assertEquals(42.5F, Float.intBitsToFloat(Bytes.getInt(value)), 0.0000001);
}
/**
* Extracts the value of a cell containing a data point.
*
* @param qualifier The qualifier of that cell, as returned by {@link #extractQualifier}.
* @param kv The cell.
* @return The value of the cell, as a {@code long}, since it's expected to be on 8 bytes at most.
* If the cell contains a floating point value, the bits of the {@code long} represent some
* kind of a floating point value.
*/
private static long extractLValue(final short qualifier, final KeyValue kv) {
final byte[] value = kv.value();
if ((qualifier & Const.FLAG_FLOAT) != 0) {
if ((qualifier & 0x3) != 0x3) {
throw new AssertionError("Float value qualifier size != 4: " + kv);
} else if (value.length != 8) {
throw new AssertionError("Float value not on 8 bytes: " + kv);
} else if (value[0] != 0 || value[1] != 0 || value[2] != 0 || value[3] != 0) {
throw new AssertionError("Float value with nonzero byte MSBs: " + kv);
}
return Bytes.getInt(value, 4);
} else {
if ((qualifier & 0x7) != 0x7) {
throw new AssertionError("Integer value qualifier size != 4: " + kv);
} else if (value.length != 8) {
throw new AssertionError("Integer value not on 8 bytes: " + kv);
}
return Bytes.getLong(value);
}
}