void DbService::getTick(const BfGetTickReq* request, ::grpc::ServerWriter<BfTickData>* writer)
{
g_sm->checkCurrentOn(ServiceMgr::EXTERNAL);
if (request->symbol().length() == 0 || request->exchange().length() == 0 || request->todate().length() == 0 || request->totime().length() == 0) {
BfDebug("invalid parm,ignore");
return;
}
leveldb::ReadOptions options;
options.fill_cache = false;
leveldb::Iterator* it = db_->NewIterator(options);
if (!it) {
qFatal("NewIterator == nullptr");
}
// key: tick-symbol-exchange-actiondate-ticktime
std::string key = QString().sprintf("tick-%s-%s-%s-%s", request->symbol().c_str(), request->exchange().c_str(), request->todate().c_str(), request->totime().c_str()).toStdString();
it->Seek(leveldb::Slice(key));
int count = 0;
for (; it->Valid() && count < request->count(); it->Prev()) {
//遇到了前后两个结束item
const char* buf = it->value().data();
int len = it->value().size();
BfTickData bfItem;
if (!bfItem.ParseFromArray(buf, len)) {
qFatal("ParseFromArray error");
break;
}
if (bfItem.symbol().length() == 0) {
std::string lastestKey = QString().sprintf("tick-%s-%s=", request->symbol().c_str(), request->exchange().c_str()).toStdString();
std::string itKey = it->key().ToString();
if (itKey == lastestKey) {
continue;
} else {
break;
}
}
count++;
writer->Write(bfItem);
}
delete it;
}
void StatForm::statTick(QString symbol, QString exchange, QString name)
{
QString startDate, startTime, endDate, endTime;
if (1) {
leveldb::DB* db = g_sm->dbService()->getDb();
leveldb::ReadOptions options;
options.fill_cache = false;
leveldb::Iterator* it = db->NewIterator(options);
if (!it) {
qFatal("NewIterator == nullptr");
}
//第一个是tick-symbol-exchange+
//最后一个是tick-symbol-exchange=
QString key = QString().sprintf("tick-%s-%s+", qPrintable(symbol), qPrintable(exchange));
it->Seek(leveldb::Slice(key.toStdString()));
if (it->Valid()) {
it->Next();
}
if (it->Valid()) {
//遇到了前后两个结束item
const char* buf = it->value().data();
int len = it->value().size();
BfTickData bfItem;
if (bfItem.ParseFromArray(buf, len) && bfItem.symbol().length() != 0) {
startDate = bfItem.actiondate().c_str();
startTime = bfItem.ticktime().c_str();
}
}
delete it;
}
if (startDate.length() != 0) {
leveldb::DB* db = g_sm->dbService()->getDb();
leveldb::ReadOptions options;
options.fill_cache = false;
leveldb::Iterator* it = db->NewIterator(options);
if (!it) {
qFatal("NewIterator == nullptr");
}
//第一个是tick-symbol-exchange+
//最后一个是tick-symbol-exchange=
QString key = QString().sprintf("tick-%s-%s=", qPrintable(symbol), qPrintable(exchange));
it->Seek(leveldb::Slice(key.toStdString()));
if (it->Valid()) {
it->Prev();
}
if (it->Valid()) {
//遇到了前后两个结束item
const char* buf = it->value().data();
int len = it->value().size();
BfTickData bfItem;
if (bfItem.ParseFromArray(buf, len) && bfItem.symbol().length() != 0) {
endDate = bfItem.actiondate().c_str();
endTime = bfItem.ticktime().c_str();
}
}
delete it;
}
if (startDate.length() != 0 && endDate.length() != 0) {
onGotData(symbol, exchange, name, "tick", startDate, startTime, endDate, endTime);
}
}