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Copy pathSTDB.cpp
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403 lines (354 loc) · 12 KB
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#include "STDB.h"
#include <iostream>
#include <sstream>
using namespace std;
STDB::STDB(const char* file_path) {
Options options;
options.create_if_missing = true;
auto status = DB::Open(options, file_path, &_db);
if(!status.ok()) {
std::cout << status.ToString() << std::endl;
}
}
STDB::~STDB() {
delete _db;
}
int STDB::set(const string &key, long long timestamp, const string &val) {
char buff[22];
sprintf(buff, "|s%019lld", timestamp);
string keys = key + buff;
auto status = _db->Put(WriteOptions(), keys, val);
if(!status.ok()) {
std::cout << status.ToString() << std::endl;
}
return STDB_OK;
}
int STDB::seti(const string &key, long long timestamp, const int val) {
char buff[22];
sprintf(buff, "|i%019lld", timestamp);
string keyi = key + buff;
string sval = to_string(val);
auto status = _db->Put(WriteOptions(), keyi, sval);
if(!status.ok()) {
std::cout << status.ToString() << std::endl;
}
return STDB_OK;
}
int STDB::setb(const string &key, long long timestamp, const bool val) {
char buff[22];
sprintf(buff, "|b%019lld", timestamp);
string keyb = key + buff;
auto status = _db->Put(WriteOptions(), keyb, val ? "T" : "F");
if(!status.ok()) {
std::cout << status.ToString() << std::endl;
}
return STDB_OK;
}
int STDB::get(const string &key, long long timestamp, string *val) {
if(val==NULL) {
return STDB_ERR_NIL;
}
char buff[22];
sprintf(buff, "|s%019lld", timestamp);
string keys = key + buff;
auto status = _db->Get(ReadOptions(), keys, val);
if(status.ok()) {
return STDB_OK;
}
return status.IsNotFound() ? STDB_ERR_NOTFOUND : STDB_ERR_NIL;
}
int STDB::geti(const string &key, long long timestamp, int *val) {
if(val==NULL) {
return STDB_ERR_NIL;
}
char buff[22];
sprintf(buff, "|i%019lld", timestamp);
string keyi = key + buff;
string siv;
auto status = _db->Get(ReadOptions(), keyi, &siv);
if(status.ok()) {
stringstream ss;
ss << siv;
ss >> *val;
return STDB_OK;
}
return status.IsNotFound() ? STDB_ERR_NOTFOUND : STDB_ERR_NIL;
}
int STDB::getb(const string &key, long long timestamp, bool *val) {
if(val==NULL) {
return STDB_ERR_NIL;
}
char buff[22];
sprintf(buff, "|b%019lld", timestamp);
string keyb = key + buff;
string sbv;
auto status = _db->Get(ReadOptions(), keyb, &sbv);
if(status.ok()) {
*val = (sbv == "T");
return STDB_OK;
}
return status.IsNotFound() ? STDB_ERR_NOTFOUND : STDB_ERR_NIL;
}
int STDB::lget(const std::string &key, long long begin, int limit, vector<pair<long long, string>> *ret) {
if(ret==NULL) {
return STDB_ERR_NIL;
}
Iterator* it = _db->NewIterator(ReadOptions());
char buff[22];
int count = 0;
if(limit<=0) {
limit = limit==0 ? 1 : -limit;
begin = 9223372036854775807;
sprintf(buff, "|s%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|s";
for(it->SeekForPrev(key_from); it->Valid() && it->key().starts_with(key_pre); it->Prev()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm<begin) {
break;
}
ret->insert(ret->begin(), pair<long long, string>(tm, string(it->value().data(), it->value().size())));
if(++count == limit) {
break;
}
}
} else {
sprintf(buff, "|s%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|s";
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
ret->push_back(pair<long long, string>(tm, string(it->value().data(), it->value().size())));
if(++count == limit) {
break;
}
}
}
delete it;
return STDB_OK;
}
int STDB::lgeti(const std::string &key, long long begin, int limit, vector<pair<long long, int>> *ret) {
if(ret==NULL) {
return STDB_ERR_NIL;
}
Iterator* it = _db->NewIterator(ReadOptions());
char buff[22];
int count = 0;
if(limit<=0) {
limit = limit==0 ? 1 : -limit;
begin = 9223372036854775807;
sprintf(buff, "|i%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|i";
for(it->SeekForPrev(key_from); it->Valid() && it->key().starts_with(key_pre); it->Prev()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm<begin) {
break;
}
stringstream ss;
int v;
ss << string(it->value().data(), it->value().size());
ss >> v;
ret->insert(ret->begin(), pair<long long, int>(tm, v));
if(++count == limit) {
break;
}
}
} else {
sprintf(buff, "|i%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|i";
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
stringstream ss;
int v;
ss << string(it->value().data(), it->value().size());
ss >> v;
ret->push_back(pair<long long, int>(tm, v));
if(++count == limit) {
break;
}
}
}
delete it;
return STDB_OK;
}
int STDB::lgetb(const std::string &key, long long begin, int limit, vector<pair<long long, bool>> *ret) {
if(ret==NULL) {
return STDB_ERR_NIL;
}
Iterator* it = _db->NewIterator(ReadOptions());
char buff[22];
int count = 0;
if(limit<=0) {
limit = limit==0 ? 1 : -limit;
begin = 9223372036854775807;
sprintf(buff, "|b%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|b";
for(it->SeekForPrev(key_from); it->Valid() && it->key().starts_with(key_pre); it->Prev()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm<begin) {
break;
}
ret->insert(ret->begin(), pair<long long, bool>(tm, it->value().data()[0]=='T'));
if(++count == limit) {
break;
}
}
} else {
sprintf(buff, "|b%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|b";
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
ret->push_back(pair<long long, bool>(tm, it->value().data()[0]=='T'));
if(++count == limit) {
break;
}
}
}
delete it;
return STDB_OK;
}
int STDB::lrange(const std::string &key, long long begin, long long end, vector<pair<long long, string>> *ret, long long step) {
if(ret==NULL || end<begin) {
return STDB_ERR_NIL;
}
char buff[22];
sprintf(buff, "|s%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|s";
Iterator* it = _db->NewIterator(ReadOptions());
if(step>0) {
long long next_step = begin;
bool recorded = false;
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm>=end) {
break;
}
if(tm<=next_step) {
if(recorded) {
continue;
}
ret->push_back(pair<long long, string>(tm, string(it->value().data(), it->value().size())));
recorded = true;
} else {
ret->push_back(pair<long long, string>(tm, string(it->value().data(), it->value().size())));
while (next_step<=tm) {
next_step += step;
}
recorded = false;
}
}
} else {
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm>end) {
break;
}
ret->push_back(pair<long long, string>(tm, string(it->value().data(), it->value().size())));
}
}
delete it;
return STDB_OK;
}
int STDB::lrangei(const std::string &key, long long begin, long long end, vector<pair<long long, int>> *ret, long long step) {
if(ret==NULL || end<begin) {
return STDB_ERR_NIL;
}
char buff[22];
sprintf(buff, "|i%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|i";
Iterator* it = _db->NewIterator(ReadOptions());
if(step>0) {
long long next_step = begin;
bool recorded = false;
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm>=end) {
break;
}
if(tm<=next_step) {
if(recorded) {
continue;
}
stringstream ss;
int v;
ss << string(it->value().data(), it->value().size());
ss >> v;
ret->push_back(pair<long long, int>(tm, v));
recorded = true;
} else {
stringstream ss;
int v;
ss << string(it->value().data(), it->value().size());
ss >> v;
ret->push_back(pair<long long, int>(tm, v));
while (next_step<=tm) {
next_step += step;
}
recorded = false;
}
}
} else {
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm>=end) {
break;
}
stringstream ss;
int v;
ss << string(it->value().data(), it->value().size());
ss >> v;
ret->push_back(pair<long long, int>(tm, v));
}
}
delete it;
return STDB_OK;
}
int STDB::lrangeb(const std::string &key, long long begin, long long end, vector<pair<long long, bool>> *ret, long long step) {
if(ret==NULL || end<begin) {
return STDB_ERR_NIL;
}
char buff[22];
sprintf(buff, "|b%019lld", begin);
string key_from = key + buff;
string key_pre = key + "|b";
Iterator* it = _db->NewIterator(ReadOptions());
if(step>0) {
long long next_step = begin;
bool recorded = false;
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm>=end) {
break;
}
if(tm<=next_step) {
if(recorded) {
continue;
}
ret->push_back(pair<long long, bool>(tm, it->value().data()[0]=='T'));
recorded = true;
} else {
ret->push_back(pair<long long, bool>(tm, it->value().data()[0]=='T'));
while (next_step<=tm) {
next_step += step;
}
recorded = false;
}
}
} else {
for(it->Seek(key_from); it->Valid() && it->key().starts_with(key_pre); it->Next()) {
auto tm = atoll(it->key().data() + (it->key().size()-19));
if(tm>=end) {
break;
}
ret->push_back(pair<long long, bool>(tm, it->value().data()[0]=='T'));
}
}
delete it;
return STDB_OK;
}