int Binlog::load(const rocksdb::Slice &s){
if(s.size() < HEADER_LEN){
return -1;
}
buf.assign(s.data(), s.size());
return 0;
}
static inline uint64_t decode_seq_key(const rocksdb::Slice &key){
uint64_t seq = 0;
if(key.size() == (sizeof(uint64_t) + 1) && key.data()[0] == DataType::SYNCLOG){
seq = *((uint64_t *)(key.data() + 1));
seq = big_endian(seq);
}
return seq;
}
/**
* Merge two EWAH bitmasks assuming that they are already
* padded to word boundaries - concatenate except adding the last two sets of 64-bit longs.
*/
bool EWAHMergeOperator::Merge(
const rocksdb::Slice &key,
const rocksdb::Slice *existing_value,
const rocksdb::Slice &value,
std::string *new_value,
rocksdb::Logger *logger) const {
assert(new_value);
new_value->clear();
if (existing_value) {
new_value->append(existing_value->data(), existing_value->size());
EWAHBoolArray<dullahan::models::bitarrayword>::concatStreams(new_value, value.data(), value.size());
}
else {
new_value->append(value.data(), value.size());
}
return true;
}
Binlog::Binlog(uint64_t seq, char type, char cmd, const rocksdb::Slice &key){
buf.append((char *)(&seq), sizeof(uint64_t));
buf.push_back(type);
buf.push_back(cmd);
buf.append(key.data(), key.size());
}