storage::Tuple *LoggingUtil::ReadTupleRecordBody(catalog::Schema *schema,
VarlenPool *pool,
FileHandle &file_handle) {
// Check if the frame is broken
size_t body_size = GetNextFrameSize(file_handle);
if (body_size == 0) {
LOG_ERROR("Body size is zero ");
return nullptr;
}
// Read Body
char body[body_size];
int ret = fread(body, 1, sizeof(body), file_handle.file);
if (ret <= 0) {
LOG_ERROR("Error occured in fread ");
}
CopySerializeInputBE tuple_body(body, body_size);
// We create a tuple based on the message
storage::Tuple *tuple = new storage::Tuple(schema, true);
tuple->DeserializeFrom(tuple_body, pool);
return tuple;
}
void LoggingUtil::SkipTupleRecordBody(FileHandle &file_handle) {
// Check if the frame is broken
size_t body_size = GetNextFrameSize(file_handle);
if (body_size == 0) {
LOG_ERROR("Body size is zero ");
}
// Read Body
char body[body_size];
int ret = fread(body, 1, sizeof(body), file_handle.file);
if (ret <= 0) {
LOG_ERROR("Error occured in fread ");
}
// TODO Is it necessary?
CopySerializeInputBE tuple_body(body, body_size);
}
/**
* @brief Read TransactionRecord
* @param txn_record
*/
bool ReadTransactionRecordHeader(TransactionRecord &txn_record, FILE *log_file,
size_t log_file_size) {
// Check if frame is broken
auto header_size = GetNextFrameSize(log_file, log_file_size);
if (header_size == 0) {
return false;
}
// Read header
char header[header_size];
size_t ret = fread(header, 1, sizeof(header), log_file);
if (ret <= 0) {
LOG_ERROR("Error occured in fread ");
}
CopySerializeInputBE txn_header(header, header_size);
txn_record.Deserialize(txn_header);
return true;
}
bool LoggingUtil::ReadTupleRecordHeader(TupleRecord &tuple_record,
FileHandle &file_handle) {
// Check if frame is broken
auto header_size = GetNextFrameSize(file_handle);
if (header_size == 0) {
LOG_ERROR("Header size is zero ");
return false;
}
// Read header
char header[header_size];
size_t ret = fread(header, 1, sizeof(header), file_handle.file);
if (ret <= 0) {
LOG_ERROR("Error occured in fread");
}
CopySerializeInputBE tuple_header(header, header_size);
tuple_record.DeserializeHeader(tuple_header);
return true;
}
