double VelocyPackHelper::toDouble(VPackSlice const& slice, bool& failed) {
TRI_ASSERT(!slice.isNone());
failed = false;
switch (slice.type()) {
case VPackValueType::None:
case VPackValueType::Null:
return 0.0;
case VPackValueType::Bool:
return (slice.getBoolean() ? 1.0 : 0.0);
case VPackValueType::Double:
case VPackValueType::Int:
case VPackValueType::UInt:
case VPackValueType::SmallInt:
return slice.getNumericValue<double>();
case VPackValueType::String: {
std::string tmp(slice.copyString());
try {
// try converting string to number
return std::stod(tmp);
} catch (...) {
if (tmp.empty()) {
return 0.0;
}
// conversion failed
}
break;
}
case VPackValueType::Array: {
VPackValueLength const n = slice.length();
if (n == 0) {
return 0.0;
} else if (n == 1) {
return VelocyPackHelper::toDouble(slice.at(0).resolveExternal(), failed);
}
break;
}
case VPackValueType::External: {
return VelocyPackHelper::toDouble(slice.resolveExternal(), failed);
}
case VPackValueType::Illegal:
case VPackValueType::Object:
case VPackValueType::UTCDate:
case VPackValueType::MinKey:
case VPackValueType::MaxKey:
case VPackValueType::Binary:
case VPackValueType::BCD:
case VPackValueType::Custom:
break;
}
failed = true;
return 0.0;
}
int VelocyPackHelper::compare(VPackSlice lhs, VPackSlice rhs,
bool useUTF8, VPackOptions const* options,
VPackSlice const* lhsBase, VPackSlice const* rhsBase) {
{
// will resolve externals...
int lWeight = TypeWeight(lhs);
int rWeight = TypeWeight(rhs);
if (lWeight < rWeight) {
return -1;
}
if (lWeight > rWeight) {
return 1;
}
TRI_ASSERT(lWeight == rWeight);
}
lhs = lhs.resolveExternal(); // follow externals
rhs = rhs.resolveExternal(); // follow externals
// lhs and rhs have equal weights
if (lhs.isNone() || rhs.isNone()) {
// either lhs or rhs is none. we cannot be sure here that both are
// nones.
// there can also exist the situation that lhs is a none and rhs is a
// null value
// (or vice versa). Anyway, the compare value is the same for both,
return 0;
}
auto lhsType = lhs.type();
switch (lhsType) {
case VPackValueType::Illegal:
case VPackValueType::MinKey:
case VPackValueType::MaxKey:
case VPackValueType::None:
case VPackValueType::Null:
return 0;
case VPackValueType::Bool: {
bool left = lhs.getBoolean();
bool right = rhs.getBoolean();
if (left == right) {
return 0;
}
if (!left && right) {
return -1;
}
return 1;
}
case VPackValueType::Double:
case VPackValueType::Int:
case VPackValueType::UInt:
case VPackValueType::SmallInt: {
return compareNumberValues(lhsType, lhs, rhs);
}
case VPackValueType::Custom:
case VPackValueType::String: {
std::string lhsString;
VPackValueLength nl;
char const* left;
if (lhs.isCustom()) {
if (lhsBase == nullptr || options == nullptr || options->customTypeHandler == nullptr) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL,
"Could not extract custom attribute.");
}
lhsString.assign(options->customTypeHandler->toString(lhs, options, *lhsBase));
left = lhsString.c_str();
nl = lhsString.size();
} else {
left = lhs.getString(nl);
}
TRI_ASSERT(left != nullptr);
std::string rhsString;
VPackValueLength nr;
char const* right;
if (rhs.isCustom()) {
if (rhsBase == nullptr || options == nullptr || options->customTypeHandler == nullptr) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL,
"Could not extract custom attribute.");
}
rhsString.assign(options->customTypeHandler->toString(rhs, options, *rhsBase));
right = rhsString.c_str();
nr = rhsString.size();
} else {
right = rhs.getString(nr);
}
TRI_ASSERT(right != nullptr);
int res;
if (useUTF8) {
res = TRI_compare_utf8(left, static_cast<size_t>(nl), right, static_cast<size_t>(nr));
} else {
size_t len = static_cast<size_t>(nl < nr ? nl : nr);
res = memcmp(left, right, len);
}
if (res < 0) {
return -1;
}
if (res > 0) {
return 1;
}
// res == 0
if (nl == nr) {
return 0;
}
// res == 0, but different string lengths
return nl < nr ? -1 : 1;
}
case VPackValueType::Array: {
VPackValueLength const nl = lhs.length();
VPackValueLength const nr = rhs.length();
VPackValueLength const n = (std::max)(nr, nl);
for (VPackValueLength i = 0; i < n; ++i) {
VPackSlice lhsValue;
if (i < nl) {
lhsValue = lhs.at(i).resolveExternal();
}
VPackSlice rhsValue;
if (i < nr) {
rhsValue = rhs.at(i).resolveExternal();
}
int result = compare(lhsValue, rhsValue, useUTF8, options, &lhs, &rhs);
if (result != 0) {
return result;
}
}
return 0;
}
case VPackValueType::Object: {
std::set<std::string, AttributeSorterUTF8> keys;
VPackCollection::keys(lhs, keys);
VPackCollection::keys(rhs, keys);
for (auto const& key : keys) {
VPackSlice lhsValue = lhs.get(key).resolveExternal();
if (lhsValue.isNone()) {
// not present => null
lhsValue = VPackSlice::nullSlice();
}
VPackSlice rhsValue = rhs.get(key).resolveExternal();
if (rhsValue.isNone()) {
// not present => null
rhsValue = VPackSlice::nullSlice();
}
int result = compare(lhsValue, rhsValue, useUTF8, options, &lhs, &rhs);
if (result != 0) {
return result;
}
}
return 0;
}
default:
// Contains all other ValueTypes of VelocyPack.
// They are not used in ArangoDB so this cannot occur
TRI_ASSERT(false);
return 0;
}
}
void RestWalHandler::flush() {
std::shared_ptr<VPackBuilder> parsedRequest;
VPackSlice slice;
try {
slice = _request->payload();
} catch (...) {
generateError(rest::ResponseCode::BAD, TRI_ERROR_HTTP_BAD_PARAMETER,
"invalid body value. expecting object");
return;
}
if (!slice.isObject() && !slice.isNone()) {
generateError(rest::ResponseCode::BAD, TRI_ERROR_HTTP_BAD_PARAMETER,
"invalid body value. expecting object");
}
bool waitForSync = false;
bool waitForCollector = false;
if (slice.isObject()) {
// got a request body
VPackSlice value = slice.get("waitForSync");
if (value.isString()) {
waitForSync = (value.copyString() == "true");
} else if (value.isBoolean()) {
waitForSync = value.getBoolean();
}
value = slice.get("waitForCollector");
if (value.isString()) {
waitForCollector = (value.copyString() == "true");
} else if (value.isBoolean()) {
waitForCollector = value.getBoolean();
}
} else {
// no request body
bool found;
{
std::string const& v = _request->value("waitForSync", found);
if (found) {
waitForSync = (v == "1" || v == "true");
}
}
{
std::string const& v = _request->value("waitForCollector", found);
if (found) {
waitForCollector = (v == "1" || v == "true");
}
}
}
int res;
if (ServerState::instance()->isCoordinator()) {
res = flushWalOnAllDBServers(waitForSync, waitForCollector);
} else {
res = arangodb::wal::LogfileManager::instance()->flush(
waitForSync, waitForCollector, false);
}
if (res != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION(res);
}
generateResult(rest::ResponseCode::OK, basics::VelocyPackHelper::EmptyObjectValue());
}
