@Test
public void testUpdateDigest() throws Exception {
MessageDigest digest1 = MessageDigest.getInstance("md5");
MessageDigest digest2 = MessageDigest.getInstance("md5");
CounterContext.ContextState state = CounterContext.ContextState.allocate(4, 2);
state.writeElement(NodeId.fromInt(1), 4L, 4L);
state.writeElement(NodeId.fromInt(2), 4L, 4L, true);
state.writeElement(NodeId.fromInt(3), 4L, 4L);
state.writeElement(NodeId.fromInt(4), 4L, 4L, true);
CounterColumn original = new CounterColumn(ByteBufferUtil.bytes("x"), state.context, 1L);
CounterColumn cleared =
new CounterColumn(ByteBufferUtil.bytes("x"), cc.clearAllDelta(state.context), 1L);
original.updateDigest(digest1);
cleared.updateDigest(digest2);
assert Arrays.equals(digest1.digest(), digest2.digest());
}
@Test
public void testCreate() throws UnknownHostException {
long delta = 3L;
CounterUpdateColumn cuc = new CounterUpdateColumn(ByteBufferUtil.bytes("x"), delta, 1L);
CounterColumn column = cuc.localCopy(Table.open("Keyspace5").getColumnFamilyStore("Counter1"));
assert delta == column.total();
assert 1 == column.value().getShort(0);
assert 0 == column.value().getShort(2);
assert NodeId.wrap(column.value(), 4).isLocalId();
assert 1L == column.value().getLong(4 + 0 * stepLength + idLength);
assert delta == column.value().getLong(4 + 0 * stepLength + idLength + clockLength);
}
@Test
public void testSerializeDeserialize() throws IOException {
CounterContext.ContextState state = CounterContext.ContextState.allocate(4, 2);
state.writeElement(NodeId.fromInt(1), 4L, 4L);
state.writeElement(NodeId.fromInt(2), 4L, 4L, true);
state.writeElement(NodeId.fromInt(3), 4L, 4L);
state.writeElement(NodeId.fromInt(4), 4L, 4L, true);
CounterColumn original = new CounterColumn(ByteBufferUtil.bytes("x"), state.context, 1L);
DataOutputBuffer bufOut = new DataOutputBuffer();
Column.serializer().serialize(original, bufOut);
byte[] serialized = bufOut.getData();
ByteArrayInputStream bufIn = new ByteArrayInputStream(serialized, 0, serialized.length);
CounterColumn deserialized =
(CounterColumn) Column.serializer().deserialize(new DataInputStream(bufIn));
assert original.equals(deserialized);
bufIn = new ByteArrayInputStream(serialized, 0, serialized.length);
CounterColumn deserializedOnRemote =
(CounterColumn) Column.serializer().deserialize(new DataInputStream(bufIn), null, true);
assert deserializedOnRemote.name().equals(original.name());
assert deserializedOnRemote.total() == original.total();
assert deserializedOnRemote.value().equals(cc.clearAllDelta(original.value()));
assert deserializedOnRemote.timestamp() == deserialized.timestamp();
assert deserializedOnRemote.timestampOfLastDelete() == deserialized.timestampOfLastDelete();
}
@Test
public void testDiff() throws UnknownHostException {
ContextState left;
ContextState right;
CounterColumn leftCol;
CounterColumn rightCol;
// timestamp
leftCol = new CounterColumn(ByteBufferUtil.bytes("x"), 0, 1L);
rightCol = new CounterColumn(ByteBufferUtil.bytes("x"), 0, 2L);
assert rightCol == leftCol.diff(rightCol);
assert null == rightCol.diff(leftCol);
// timestampOfLastDelete
leftCol = new CounterColumn(ByteBufferUtil.bytes("x"), 0, 1L, 1L);
rightCol = new CounterColumn(ByteBufferUtil.bytes("x"), 0, 1L, 2L);
assert rightCol == leftCol.diff(rightCol);
assert null == rightCol.diff(leftCol);
// equality: equal nodes, all counts same
left = ContextState.allocate(3, 0);
left.writeElement(NodeId.fromInt(3), 3L, 0L);
left.writeElement(NodeId.fromInt(6), 2L, 0L);
left.writeElement(NodeId.fromInt(9), 1L, 0L);
right = new ContextState(ByteBufferUtil.clone(left.context), 2);
leftCol = new CounterColumn(ByteBufferUtil.bytes("x"), left.context, 1L);
rightCol = new CounterColumn(ByteBufferUtil.bytes("x"), right.context, 1L);
assert null == leftCol.diff(rightCol);
// greater than: left has superset of nodes (counts equal)
left = ContextState.allocate(4, 0);
left.writeElement(NodeId.fromInt(3), 3L, 0L);
left.writeElement(NodeId.fromInt(6), 2L, 0L);
left.writeElement(NodeId.fromInt(9), 1L, 0L);
left.writeElement(NodeId.fromInt(12), 0L, 0L);
right = ContextState.allocate(3, 0);
right.writeElement(NodeId.fromInt(3), 3L, 0L);
right.writeElement(NodeId.fromInt(6), 2L, 0L);
right.writeElement(NodeId.fromInt(9), 1L, 0L);
leftCol = new CounterColumn(ByteBufferUtil.bytes("x"), left.context, 1L);
rightCol = new CounterColumn(ByteBufferUtil.bytes("x"), right.context, 1L);
assert null == leftCol.diff(rightCol);
// less than: right has subset of nodes (counts equal)
assert leftCol == rightCol.diff(leftCol);
// disjoint: right and left have disjoint node sets
left = ContextState.allocate(3, 0);
left.writeElement(NodeId.fromInt(3), 1L, 0L);
left.writeElement(NodeId.fromInt(4), 1L, 0L);
left.writeElement(NodeId.fromInt(9), 1L, 0L);
right = ContextState.allocate(3, 0);
right.writeElement(NodeId.fromInt(3), 1L, 0L);
right.writeElement(NodeId.fromInt(6), 1L, 0L);
right.writeElement(NodeId.fromInt(9), 1L, 0L);
leftCol = new CounterColumn(ByteBufferUtil.bytes("x"), left.context, 1L);
rightCol = new CounterColumn(ByteBufferUtil.bytes("x"), right.context, 1L);
assert rightCol == leftCol.diff(rightCol);
assert leftCol == rightCol.diff(leftCol);
}