std::shared_ptr<LedgerEntry const>
LedgerStateRoot::Impl::loadOffer(LedgerKey const& key) const
{
uint64_t offerID = key.offer().offerID;
std::string actIDStrKey = KeyUtils::toStrKey(key.offer().sellerID);
std::string sql = "SELECT sellerid, offerid, "
"sellingassettype, sellingassetcode, sellingissuer, "
"buyingassettype, buyingassetcode, buyingissuer, "
"amount, pricen, priced, flags, lastmodified "
"FROM offers "
"WHERE sellerid= :id AND offerid= :offerid";
auto prep = mDatabase.getPreparedStatement(sql);
auto& st = prep.statement();
st.exchange(soci::use(actIDStrKey));
st.exchange(soci::use(offerID));
std::vector<LedgerEntry> offers;
{
auto timer = mDatabase.getSelectTimer("offer");
offers = loadOffers(prep);
}
return offers.size() == 0
? nullptr
: std::make_shared<LedgerEntry const>(offers.front());
}
OfferFrame::pointer
OfferFrame::loadOffer(AccountID const& sellerID, uint64_t offerID, Database& db,
LedgerDelta* delta)
{
OfferFrame::pointer retOffer;
std::string actIDStrKey = KeyUtils::toStrKey(sellerID);
std::string sql = offerColumnSelector;
sql += " WHERE sellerid = :id AND offerid = :offerid";
auto prep = db.getPreparedStatement(sql);
auto& st = prep.statement();
st.exchange(use(actIDStrKey));
st.exchange(use(offerID));
auto timer = db.getSelectTimer("offer");
loadOffers(prep, [&retOffer](LedgerEntry const& offer) {
retOffer = make_shared<OfferFrame>(offer);
});
if (delta && retOffer)
{
delta->recordEntry(*retOffer);
}
return retOffer;
}
std::unordered_map<AccountID, std::vector<OfferFrame::pointer>>
OfferFrame::loadAllOffers(Database& db)
{
std::unordered_map<AccountID, std::vector<OfferFrame::pointer>> retOffers;
std::string sql = offerColumnSelector;
sql += " ORDER BY sellerid";
auto prep = db.getPreparedStatement(sql);
auto timer = db.getSelectTimer("offer");
loadOffers(prep, [&retOffers](LedgerEntry const& of) {
auto& thisUserOffers = retOffers[of.data.offer().sellerID];
thisUserOffers.emplace_back(make_shared<OfferFrame>(of));
});
return retOffers;
}
std::vector<LedgerEntry>
LedgerStateRoot::Impl::loadAllOffers() const
{
std::string sql = "SELECT sellerid, offerid, "
"sellingassettype, sellingassetcode, sellingissuer, "
"buyingassettype, buyingassetcode, buyingissuer, "
"amount, pricen, priced, flags, lastmodified "
"FROM offers";
auto prep = mDatabase.getPreparedStatement(sql);
std::vector<LedgerEntry> offers;
{
auto timer = mDatabase.getSelectTimer("offer");
offers = loadOffers(prep);
}
return offers;
}
// Note: This function is currently only used in AllowTrustOpFrame, which means
// the asset parameter will never satisfy asset.type() == ASSET_TYPE_NATIVE. As
// a consequence, I have not implemented that possibility so this function
// throws in that case.
std::vector<LedgerEntry>
LedgerStateRoot::Impl::loadOffersByAccountAndAsset(AccountID const& accountID,
Asset const& asset) const
{
std::string sql = "SELECT sellerid, offerid, "
"sellingassettype, sellingassetcode, sellingissuer, "
"buyingassettype, buyingassetcode, buyingissuer, "
"amount, pricen, priced, flags, lastmodified "
"FROM offers ";
sql += " WHERE sellerid = :acc"
" AND ((sellingassetcode = :code AND sellingissuer = :iss)"
" OR (buyingassetcode = :code AND buyingissuer = :iss))";
std::string accountStr = KeyUtils::toStrKey(accountID);
std::string assetCode;
std::string assetIssuer;
if (asset.type() == ASSET_TYPE_CREDIT_ALPHANUM4)
{
assetCodeToStr(asset.alphaNum4().assetCode, assetCode);
assetIssuer = KeyUtils::toStrKey(asset.alphaNum4().issuer);
}
else if (asset.type() == ASSET_TYPE_CREDIT_ALPHANUM12)
{
assetCodeToStr(asset.alphaNum12().assetCode, assetCode);
assetIssuer = KeyUtils::toStrKey(asset.alphaNum12().issuer);
}
else
{
throw std::runtime_error("Invalid asset type");
}
auto prep = mDatabase.getPreparedStatement(sql);
auto& st = prep.statement();
st.exchange(soci::use(accountStr, "acc"));
st.exchange(soci::use(assetCode, "code"));
st.exchange(soci::use(assetIssuer, "iss"));
std::vector<LedgerEntry> offers;
{
auto timer = mDatabase.getSelectTimer("offer");
offers = loadOffers(prep);
}
return offers;
}
void
OfferFrame::loadOffers(AccountID const& accountID,
std::vector<OfferFrame::pointer>& retOffers,
Database& db)
{
std::string actIDStrKey;
actIDStrKey = KeyUtils::toStrKey(accountID);
std::string sql = offerColumnSelector;
sql += " WHERE sellerid = :id";
auto prep = db.getPreparedStatement(sql);
auto& st = prep.statement();
st.exchange(use(actIDStrKey));
auto timer = db.getSelectTimer("offer");
loadOffers(prep, [&retOffers](LedgerEntry const& of) {
retOffers.emplace_back(make_shared<OfferFrame>(of));
});
}
void
OfferFrame::loadOffers(AccountID const& accountID,
std::vector<OfferFrame::pointer>& retOffers,
Database& db)
{
soci::session& session = db.getSession();
std::string actIDStrKey;
actIDStrKey = PubKeyUtils::toStrKey(accountID);
soci::details::prepare_temp_type sql =
(session.prepare << offerColumnSelector << " WHERE sellerid=:id",
use(actIDStrKey));
auto timer = db.getSelectTimer("offer");
loadOffers(sql, [&retOffers](LedgerEntry const& of)
{
retOffers.emplace_back(make_shared<OfferFrame>(of));
});
}
OfferFrame::pointer
OfferFrame::loadOffer(AccountID const& sellerID, uint64_t offerID,
Database& db)
{
OfferFrame::pointer retOffer;
std::string actIDStrKey;
actIDStrKey = PubKeyUtils::toStrKey(sellerID);
soci::session& session = db.getSession();
soci::details::prepare_temp_type sql =
(session.prepare << offerColumnSelector
<< " where sellerid=:id and offerid=:offerid",
use(actIDStrKey), use(offerID));
auto timer = db.getSelectTimer("offer");
loadOffers(sql, [&retOffer](LedgerEntry const& offer)
{
retOffer = make_shared<OfferFrame>(offer);
});
return retOffer;
}
void
OfferFrame::loadBestOffers(size_t numOffers, size_t offset,
Asset const& selling, Asset const& buying,
vector<OfferFrame::pointer>& retOffers, Database& db)
{
std::string sql = offerColumnSelector;
std::string sellingAssetCode, sellingIssuerStrKey;
std::string buyingAssetCode, buyingIssuerStrKey;
bool useSellingAsset = false;
bool useBuyingAsset = false;
if (selling.type() == ASSET_TYPE_NATIVE)
{
sql += " WHERE sellingassettype = 0";
}
else
{
if (selling.type() == ASSET_TYPE_CREDIT_ALPHANUM4)
{
assetCodeToStr(selling.alphaNum4().assetCode, sellingAssetCode);
sellingIssuerStrKey =
PubKeyUtils::toStrKey(selling.alphaNum4().issuer);
}
else if (selling.type() == ASSET_TYPE_CREDIT_ALPHANUM12)
{
assetCodeToStr(selling.alphaNum12().assetCode, sellingAssetCode);
sellingIssuerStrKey =
PubKeyUtils::toStrKey(selling.alphaNum12().issuer);
}
else
{
throw std::runtime_error("unknown asset type");
}
useSellingAsset = true;
sql += " WHERE sellingassetcode = :pcur AND sellingissuer = :pi";
}
if (buying.type() == ASSET_TYPE_NATIVE)
{
sql += " AND buyingassettype = 0";
}
else
{
if (buying.type() == ASSET_TYPE_CREDIT_ALPHANUM4)
{
assetCodeToStr(buying.alphaNum4().assetCode, buyingAssetCode);
buyingIssuerStrKey =
PubKeyUtils::toStrKey(buying.alphaNum4().issuer);
}
else if (buying.type() == ASSET_TYPE_CREDIT_ALPHANUM12)
{
assetCodeToStr(buying.alphaNum12().assetCode, buyingAssetCode);
buyingIssuerStrKey =
PubKeyUtils::toStrKey(buying.alphaNum12().issuer);
}
else
{
throw std::runtime_error("unknown asset type");
}
useBuyingAsset = true;
sql += " AND buyingassetcode = :gcur AND buyingissuer = :gi";
}
// price is an approximation of the actual n/d (truncated math, 15 digits)
// ordering by offerid gives precendence to older offers for fairness
sql += " ORDER BY price, offerid LIMIT :n OFFSET :o";
auto prep = db.getPreparedStatement(sql);
auto& st = prep.statement();
if (useSellingAsset)
{
st.exchange(use(sellingAssetCode));
st.exchange(use(sellingIssuerStrKey));
}
if (useBuyingAsset)
{
st.exchange(use(buyingAssetCode));
st.exchange(use(buyingIssuerStrKey));
}
st.exchange(use(numOffers));
st.exchange(use(offset));
auto timer = db.getSelectTimer("offer");
loadOffers(prep, [&retOffers](LedgerEntry const& of)
{
retOffers.emplace_back(make_shared<OfferFrame>(of));
});
}
std::list<LedgerEntry>::const_iterator
LedgerStateRoot::Impl::loadBestOffers(std::list<LedgerEntry>& offers,
Asset const& buying, Asset const& selling,
size_t numOffers, size_t offset) const
{
std::string sql = "SELECT sellerid, offerid, "
"sellingassettype, sellingassetcode, sellingissuer, "
"buyingassettype, buyingassetcode, buyingissuer, "
"amount, pricen, priced, flags, lastmodified "
"FROM offers ";
std::string sellingAssetCode, sellingIssuerStrKey;
if (selling.type() == ASSET_TYPE_NATIVE)
{
sql += " WHERE sellingassettype = 0 AND sellingissuer IS NULL";
}
else
{
if (selling.type() == ASSET_TYPE_CREDIT_ALPHANUM4)
{
assetCodeToStr(selling.alphaNum4().assetCode, sellingAssetCode);
sellingIssuerStrKey =
KeyUtils::toStrKey(selling.alphaNum4().issuer);
}
else if (selling.type() == ASSET_TYPE_CREDIT_ALPHANUM12)
{
assetCodeToStr(selling.alphaNum12().assetCode, sellingAssetCode);
sellingIssuerStrKey =
KeyUtils::toStrKey(selling.alphaNum12().issuer);
}
else
{
throw std::runtime_error("unknown asset type");
}
sql += " WHERE sellingassetcode = :sac AND sellingissuer = :si";
}
std::string buyingAssetCode, buyingIssuerStrKey;
if (buying.type() == ASSET_TYPE_NATIVE)
{
sql += " AND buyingassettype = 0 AND buyingissuer IS NULL";
}
else
{
if (buying.type() == ASSET_TYPE_CREDIT_ALPHANUM4)
{
assetCodeToStr(buying.alphaNum4().assetCode, buyingAssetCode);
buyingIssuerStrKey = KeyUtils::toStrKey(buying.alphaNum4().issuer);
}
else if (buying.type() == ASSET_TYPE_CREDIT_ALPHANUM12)
{
assetCodeToStr(buying.alphaNum12().assetCode, buyingAssetCode);
buyingIssuerStrKey = KeyUtils::toStrKey(buying.alphaNum12().issuer);
}
else
{
throw std::runtime_error("unknown asset type");
}
sql += " AND buyingassetcode = :bac AND buyingissuer = :bi";
}
// price is an approximation of the actual n/d (truncated math, 15 digits)
// ordering by offerid gives precendence to older offers for fairness
sql += " ORDER BY price, offerid LIMIT :n OFFSET :o";
auto prep = mDatabase.getPreparedStatement(sql);
auto& st = prep.statement();
if (selling.type() != ASSET_TYPE_NATIVE)
{
st.exchange(soci::use(sellingAssetCode, "sac"));
st.exchange(soci::use(sellingIssuerStrKey, "si"));
}
if (buying.type() != ASSET_TYPE_NATIVE)
{
st.exchange(soci::use(buyingAssetCode, "bac"));
st.exchange(soci::use(buyingIssuerStrKey, "bi"));
}
st.exchange(soci::use(numOffers, "n"));
st.exchange(soci::use(offset, "o"));
{
auto timer = mDatabase.getSelectTimer("offer");
return loadOffers(prep, offers);
}
}
void
OfferFrame::loadBestOffers(size_t numOffers, size_t offset,
Asset const& selling, Asset const& buying,
vector<OfferFrame::pointer>& retOffers, Database& db)
{
soci::session& session = db.getSession();
soci::details::prepare_temp_type sql =
(session.prepare << offerColumnSelector);
std::string sellingAssetCode, sellingIssuerStrKey;
std::string buyingAssetCode, buyingIssuerStrKey;
if (selling.type() == ASSET_TYPE_NATIVE)
{
sql << " WHERE sellingassettype=0";
}
else
{
if(selling.type() == ASSET_TYPE_CREDIT_ALPHANUM4)
{
assetCodeToStr(selling.alphaNum4().assetCode, sellingAssetCode);
sellingIssuerStrKey = PubKeyUtils::toStrKey(selling.alphaNum4().issuer);
} else if(selling.type() == ASSET_TYPE_CREDIT_ALPHANUM12)
{
assetCodeToStr(selling.alphaNum12().assetCode, sellingAssetCode);
sellingIssuerStrKey = PubKeyUtils::toStrKey(selling.alphaNum12().issuer);
}else throw std::runtime_error("unknown asset type");
sql << " WHERE sellingassetcode=:pcur AND sellingissuer = :pi",
use(sellingAssetCode), use(sellingIssuerStrKey);
}
if (buying.type() == ASSET_TYPE_NATIVE)
{
sql << " AND buyingassettype=0";
}
else
{
if(buying.type() == ASSET_TYPE_CREDIT_ALPHANUM4)
{
assetCodeToStr(buying.alphaNum4().assetCode, buyingAssetCode);
buyingIssuerStrKey = PubKeyUtils::toStrKey(buying.alphaNum4().issuer);
} else if(buying.type() == ASSET_TYPE_CREDIT_ALPHANUM12)
{
assetCodeToStr(buying.alphaNum12().assetCode, buyingAssetCode);
buyingIssuerStrKey = PubKeyUtils::toStrKey(buying.alphaNum12().issuer);
}else throw std::runtime_error("unknown asset type");
sql << " AND buyingassetcode=:gcur AND buyingissuer = :gi",
use(buyingAssetCode), use(buyingIssuerStrKey);
}
sql << " ORDER BY price,offerid LIMIT :n OFFSET :o", use(numOffers),
use(offset);
auto timer = db.getSelectTimer("offer");
loadOffers(sql, [&retOffers](LedgerEntry const& of)
{
retOffers.emplace_back(make_shared<OfferFrame>(of));
});
}