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zrdb.cpp
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zrdb.cpp
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/*
This file is part of the Zero Reserve Plugin for Retroshare.
Zero Reserve is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Zero Reserve is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with Zero Reserve. If not, see <http://www.gnu.org/licenses/>.
*/
#include "zrdb.h"
#include "ZeroReservePlugin.h"
#include "p3ZeroReserverRS.h"
#include "retroshare/rsinit.h"
#include <QMessageBox>
#include <QDir>
#include <QFile>
#include <QFileDialog>
#include <iostream>
#include <sstream>
#include <vector>
#include <stdexcept>
const char * const ZrDB::TXLOGPATH = "TXLOGPATH";
const char * const ZrDB::DB_VERSION = "DB_VERSION";
ZrDB * ZrDB::instance = 0;
RsMutex ZrDB::creation_mutex("creation_mutex");
static int mywallets_callback(void * db, int argc, char ** argv, char ** )
{
ZrDB * zrdb = static_cast< ZrDB * >( db );
if( argc == 3 ){
ZrDB::MyWallet wallet;
wallet.secret = argv[ 0 ];
wallet.type = atoi( argv[ 1 ] );
wallet.nick = argv[ 2 ];
zrdb->addMyWallet( wallet );
}
else {
return SQLITE_ERROR;
}
return SQLITE_OK;
}
static int orders_callback(void * db, int argc, char ** argv, char ** )
{
ZrDB * zrdb = static_cast< ZrDB * >( db );
if( argc == 7 ){
OrderBook::Order * order = new OrderBook::Order( true );
order->m_order_id = argv[0];
order->m_orderType = OrderBook::Order::OrderType( atoi( argv[1] ) );
order->m_amount = ZR::ZR_Number::fromDecimalString( std::string( argv[2]) );
order->m_price = ZR::ZR_Number::fromDecimalString( std::string( argv[3]) );
order->m_currency = Currency::getCurrencyBySymbol( argv[4] );
order->m_timeStamp = atoll( argv[5] );
order->m_purpose = OrderBook::Order::Purpose( atoi( argv[6] ) );
zrdb->addToOrderList( order );
}
else {
return SQLITE_ERROR;
}
return SQLITE_OK;
}
static int txlog_callback(void * db, int argc, char ** argv, char ** )
{
ZrDB * zrdb = static_cast< ZrDB * >( db );
if(argc == 4){
ZrDB::TxLogItem item;
item.id = argv[0];
item.currency = argv[1];
item.m_amount = ZR::ZR_Number::fromDecimalString( std::string(argv[2]) );
item.timestamp = QDateTime::fromString( argv[3], "yyyy-MM-dd HH:mm:ss" );
zrdb->addToTxList( item );
}
else {
return SQLITE_ERROR;
}
return SQLITE_OK;
}
static int noop_callback(void * db, int, char **, char **)
{
return SQLITE_OK;
}
static int store_peer_callback(void * db, int, char **, char **)
{
ZrDB * zrdb = static_cast< ZrDB * >( db );
zrdb->peerRecordExists();
return SQLITE_OK;
}
static int peer_credit_callback(void * db, int argc, char ** argv, char ** )
{
ZrDB * zrdb = static_cast< ZrDB * >( db );
if(argc == 3){
zrdb->setPeerCredit( argv[0], argv[1], argv[2] );
}
else {
return SQLITE_ERROR;
}
return SQLITE_OK;
}
static int peer_credits_callback(void * db, int argc, char ** argv, char ** )
{
ZrDB * zrdb = static_cast< ZrDB * >( db );
if(argc == 5){
Credit * credit = new Credit( argv[0], argv[1]);
credit->m_credit = ZR::ZR_Number::fromDecimalString( std::string( argv[2] ) );
credit->m_our_credit = ZR::ZR_Number::fromDecimalString( std::string( argv[3] ) );
credit->m_balance = ZR::ZR_Number::fromDecimalString( std::string( argv[4] ) );
zrdb->addPeerCredit( credit );
}
else {
return SQLITE_ERROR;
}
return SQLITE_OK;
}
static int grandtotal_callback(void * db, int argc, char ** argv, char ** )
{
if(argc != 3) return SQLITE_ERROR;
ZrDB * zrdb = static_cast< ZrDB * >( db );
zrdb->addToGrandTotal( argv );
return SQLITE_OK;
}
static int peer_config_callback(void * db, int argc, char ** argv, char ** )
{
ZrDB * zrdb = static_cast< ZrDB * >( db );
if(argc == 1){
zrdb->setConfigValue( argv[0] );
}
else {
return SQLITE_ERROR;
}
return SQLITE_OK;
}
ZrDB::ZrDB() :
m_peer_mutex("peer_mutex"),
m_config_mutex("config_mutex"),
m_tx_mutex ( "tx_mutex" )
{
}
ZrDB * ZrDB::Instance()
{
RsStackMutex creationMutex( creation_mutex );
if( !ZrDB::instance ) {
ZrDB::instance = new ZrDB();
try{
ZrDB::instance->init();
}
catch( std::exception e ){
QMessageBox::critical(0, "SQL Error", e.what() );
delete ZrDB::instance;
ZrDB::instance = 0;
}
}
return ZrDB::instance;
}
void ZrDB::init()
{
char *zErrMsg = 0;
int rc;
p3ZeroReserveRS * p3zr = static_cast< p3ZeroReserveRS* >( g_ZeroReservePlugin->rs_pqi_service() );
std::string pathname = RsInit::RsConfigDirectory() + "/" +
p3zr->getOwnId() + "/zeroreserve";
QDir zrdata ( QString::fromStdString(pathname) );
if( !zrdata.mkpath( QString::fromStdString( pathname ) ) ){
QMessageBox::critical(0, "Error", "Cannot create DB");
return;
}
std::string db_name = pathname + "/zeroreserve.db";
bool db_exists = QFile::exists(db_name.c_str() );
std::cerr << "Opening or creating DB " << db_name << std::endl;
rc = sqlite3_open( db_name.c_str(), &m_db);
if( rc ){
std::cerr << "Can't open database: " << sqlite3_errmsg(m_db) << std::endl;
sqlite3_close(m_db);
throw std::runtime_error("SQL Error: Cannot open database");
}
if( !db_exists ){
std::cerr << "Populating " << db_name << std::endl;
std::vector < std::string > tables;
tables.push_back( "create table if not exists peers ( id varchar(32), currency varchar(3), our_credit decimal(12,8), credit decimal(12,8), balance decimal(12,8) )");
tables.push_back( "create table if not exists config ( key varchar(32), value varchar(160) )");
tables.push_back( "create table if not exists payments ( payee varchar(32), currency varchar(3), amount decimal(12,8) )");
tables.push_back( "create table if not exists myorders ( orderid varchar(32), ordertype int, amount decimal(12,8), price decimal(12,8), currency varchar(3), creationtime int, purpose int )");
tables.push_back( "create table if not exists mywallet ( secret varchar(64), type int, nick varchar(64) )");
tables.push_back( "create table if not exists peerwallet ( address varchar(34), nick varchar(64) )");
tables.push_back( "create unique index if not exists id_curr on peers ( id, currency)");
for(std::vector < std::string >::const_iterator it = tables.begin(); it != tables.end(); it++ ){
rc = sqlite3_exec(m_db, (*it).c_str(), noop_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error("SQL Error: Cannot create table");
}
}
setConfig( TXLOGPATH, pathname + "/zeroreserve.tx" );
setConfig( DB_VERSION, "0" );
}
openTxLog();
}
void ZrDB::setConfig( const std::string & key, const std::string & value )
{
RsStackMutex configMutex( m_config_mutex );
std::string insert = "insert into config values( '";
insert += key + "', '" + value + "' )";
runQuery( insert );
}
void ZrDB::updateConfig( const std::string & key, const std::string & value )
{
RsStackMutex configMutex( m_config_mutex );
std::string update = "update config set value= '";
update += value +"' where key = '" + key + "'";
runQuery( update );
}
std::string ZrDB::getConfig( const std::string & key )
{
char *zErrMsg = 0;
RsStackMutex configMutex( m_config_mutex );
m_config_value.clear();
std::string select = "select value from config where key = '";
select += key + "'";
int rc = sqlite3_exec(m_db, select.c_str(), peer_config_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( std::string( "SQL Error: Cannot get value " ) + key );
}
return m_config_value;
}
ZrDB::GrandTotal & ZrDB::loadGrandTotal( const std::string & currency )
{
char *zErrMsg = 0;
RsStackMutex peerMutex( m_peer_mutex );
grandTotal.currency = currency;
grandTotal.our_credit = 0;
grandTotal.credit = 0;
grandTotal.outstanding = 0;
grandTotal.debt = 0;
grandTotal.balance = 0;
std::ostringstream select;
select << "select our_credit, credit, balance from peers where currency = '" << currency << "'";
int rc = sqlite3_exec(m_db, select.str().c_str(), grandtotal_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot store peer data" );
}
return grandTotal;
}
void ZrDB::addToGrandTotal( char ** cols )
{
grandTotal.our_credit += atof( cols[0] );
grandTotal.credit += atof( cols[1] );
ZR::ZR_Number peerbalance = atof ( cols[2] );
grandTotal.balance += peerbalance;
if( peerbalance > 0 ){
grandTotal.outstanding += peerbalance;
}
else {
grandTotal.debt -= peerbalance;
}
}
bool ZrDB::peerExists( const Credit & peer_in )
{
char *zErrMsg = 0;
RsStackMutex peerMutex( m_peer_mutex );
m_peer_record_exists = false;
std::ostringstream select;
select << "select * from peers where id = '" << peer_in.m_id
<< "' and currency = '" << peer_in.m_currency << "'";
int rc = sqlite3_exec(m_db, select.str().c_str(), store_peer_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot store peer data" );
}
return m_peer_record_exists;
}
void ZrDB::updatePeerCredit( const Credit & peer_in, const std::string & column, ZR::ZR_Number & value )
{
RsStackMutex peerMutex( m_peer_mutex );
std::cerr << "Zero Reserve: Updating peer credit " << peer_in.m_id << std::endl;
std::ostringstream update;
update << "update peers set " <<
column << " = " << value.toDouble() <<
" where id = '" << peer_in.m_id << "'" <<
" and currency = '" << peer_in.m_currency << "'";
runQuery( update.str() );
}
void ZrDB::runQuery(const std::string & sql )
{
char *zErrMsg = 0;
int rc = sqlite3_exec(m_db, sql.c_str(), noop_callback, this, &zErrMsg);
if( rc != SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot update peer data" );
}
}
void ZrDB::createPeerRecord( const Credit & peer_in )
{
std::cerr << "Zero Reserve: Updating peer credit " << peer_in.m_id << std::endl;
std::ostringstream insert;
insert << "insert into peers (id, currency, our_credit, credit, balance) values( '"
<< peer_in.m_id << "', '" << peer_in.m_currency << "', 0, 0, 0 )";
runQuery( insert.str() );
}
void ZrDB::loadPeer( Credit & peer_out )
{
RsStackMutex peerMutex( m_peer_mutex );
m_credit = &peer_out;
char *zErrMsg = 0;
std::ostringstream select;
select << "select credit, our_credit, balance from peers where id = '"
<< peer_out.m_id << "' and currency = '" << peer_out.m_currency << "'";
std::string selectstr = select.str();
int rc = sqlite3_exec(m_db, selectstr.c_str(), peer_credit_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot load peer data" );
}
}
void ZrDB::loadPeer( const std::string & id, Credit::CreditList & peer_out )
{
RsStackMutex peerMutex( m_peer_mutex );
m_creditList = &peer_out;
char *zErrMsg = 0;
std::ostringstream select;
select << "select id, currency, credit, our_credit, balance from peers where id = '" << id << "'";
std::string selectstr = select.str();
int rc = sqlite3_exec(m_db, selectstr.c_str(), peer_credits_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot load peer data" );
}
}
void ZrDB::setPeerCredit( const std::string & credit, const std::string & our_credit, const std::string & balance )
{
m_credit->m_credit = ZR::ZR_Number::fromDecimalString( credit );
m_credit->m_our_credit = ZR::ZR_Number::fromDecimalString( our_credit );
m_credit->m_balance = ZR::ZR_Number::fromDecimalString( balance );
}
void ZrDB::addPeerCredit( Credit * credit )
{
m_creditList->push_back( credit );
}
void ZrDB::openTxLog()
{
char *zErrMsg = 0;
std::string txLog = getConfig( TXLOGPATH );
int rc = sqlite3_open( txLog.c_str(), &m_txLog );
if( rc ){
std::cerr << "Can't open transaction log: " << sqlite3_errmsg( m_txLog ) << std::endl;
sqlite3_close(m_txLog);
throw std::runtime_error("SQL Error: Cannot open database");
}
rc = sqlite3_exec(m_txLog, "create table if not exists txlog ( uid varchar(32), currency varchar(3), amount decimal(12,8), txtime datetime default current_timestamp )", noop_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error("SQL Error: Cannot create table");
}
}
void ZrDB::appendTx(const std::string & id, const std::string & currency, ZR::ZR_Number amount )
{
char *zErrMsg = 0;
std::cerr << "Zero Reserve: Appending to TX log " << id << ". " << amount << std::endl;
std::ostringstream insert;
insert << "insert into txlog ( uid, currency, amount ) values( '"
<< id << "', '"
<< currency << "', "
<< amount.toDouble() << " )";
int rc = sqlite3_exec(m_txLog, insert.str().c_str(), noop_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot append to TX log" );
}
}
void ZrDB::loadTxLog( std::list< TxLogItem > & txList )
{
char *zErrMsg = 0;
RsStackMutex txMutex( m_tx_mutex );
m_txList = &txList;
int rc = sqlite3_exec(m_txLog, "select uid,currency,amount,txtime from txlog order by txtime desc", txlog_callback, this, &zErrMsg);
if( rc != SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot read TX log" );
}
}
void ZrDB::addToTxList( const TxLogItem & item )
{
m_txList->push_back( item );
}
////////////////////////////////////////////////////////////////
void ZrDB::addOrder( OrderBook::Order * order )
{
std::ostringstream insert;
insert << "insert into myorders ( orderid, ordertype, amount, price, currency, creationtime, purpose ) values( '"
<< order->m_order_id << "', "
<< order->m_orderType << ", "
<< order->m_amount.toDouble() << ", "
<< order->m_price.toDouble() << ", '"
<< Currency::currencySymbols[ order->m_currency ] << "', "
<< order->m_timeStamp << ", "
<< order->m_purpose << " )";
runQuery( insert.str() );
}
void ZrDB::loadOrders( OrderBook::OrderList * orders_out )
{
char *zErrMsg = 0;
m_orderList = orders_out;
int rc = sqlite3_exec(m_db, "select orderid, ordertype, amount, price, currency, creationtime, purpose from myorders", orders_callback, this, &zErrMsg);
if( rc != SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot read Orders" );
}
}
void ZrDB::updateOrder( OrderBook::Order * order )
{
std::cerr << "Zero Reserve: Updating my orders " << order->m_order_id << std::endl;
std::ostringstream update;
update << "update myorders set amount = " << order->m_amount
<< " where orderid = '" << order->m_order_id << "'";
runQuery( update.str() );
}
void ZrDB::deleteOrder( OrderBook::Order * order )
{
std::cerr << "Zero Reserve: Updating my orders " << order->m_order_id << std::endl;
std::ostringstream rmo;
rmo << "delete from myorders where orderid = '" << order->m_order_id << "'";
runQuery( rmo.str() );
}
void ZrDB::addToOrderList( OrderBook::Order * order )
{
m_orderList->push_back( order );
}
/////////////////////////// Wallet /////////////////////////////////////
ZR::RetVal ZrDB::storeMyWallet( const ZR::WalletSecret & secret, unsigned int type, const std::string & nick )
{
std::cerr << "Zero Reserve: Inserting my wallet " << std::endl;
std::ostringstream insert;
insert << "insert into mywallet ( secret, type, nick ) values( '"
<< secret << "', '"
<< type << "', '"
<< nick << "' )";
runQuery( insert.str() );
return ZR::ZR_SUCCESS;
}
ZR::RetVal ZrDB::addPeerWallet( const ZR::BitcoinAddress & address, const std::string & nick )
{
std::cerr << "Zero Reserve: Inserting peer wallet " << std::endl;
std::ostringstream insert;
insert << "insert into peerwallet ( address, nick ) values( '"
<< address << "', '"
<< nick << "' )";
runQuery( insert.str() );
return ZR::ZR_SUCCESS;
}
void ZrDB::loadMyWallets( std::vector< MyWallet > & wallets )
{
char *zErrMsg = 0;
m_wallets = &wallets;
std::ostringstream select;
select << "select secret, type, nick from mywallet";
int rc = sqlite3_exec(m_db, select.str().c_str(), mywallets_callback, this, &zErrMsg);
if( rc!=SQLITE_OK ){
std::cerr << "SQL error: " << zErrMsg << std::endl;
sqlite3_free(zErrMsg);
throw std::runtime_error( "SQL Error: Cannot store peer data" );
}
}
void ZrDB::addMyWallet( MyWallet &wallet )
{
m_wallets->push_back( wallet );
}
////////////////////////// Shutdown //////////////////////////////////////
void ZrDB::closeTxLog()
{
sqlite3_close( m_txLog );
}
void ZrDB::close()
{
sqlite3_close( m_db );
closeTxLog();
}