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/**
* Copyright (C) 2017 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/update/current_date_node.h"
#include "mongo/db/logical_clock.h"
#include "mongo/db/logical_time.h"
#include "mongo/db/service_context.h"
namespace mongo {
namespace {
constexpr StringData kType = "$type"_sd;
constexpr StringData kDate = "date"_sd;
constexpr StringData kTimestamp = "timestamp"_sd;
void setValue(mutablebson::Element* element, bool typeIsDate) {
if (typeIsDate) {
invariant(element->setValueDate(mongo::jsTime()));
} else {
invariant(element->setValueTimestamp(
LogicalClock::get(getGlobalServiceContext())->reserveTicks(1).asTimestamp()));
}
}
} // namespace
Status CurrentDateNode::init(BSONElement modExpr,
const boost::intrusive_ptr<ExpressionContext>& expCtx) {
invariant(modExpr.ok());
if (modExpr.type() == BSONType::Bool) {
_typeIsDate = true;
} else if (modExpr.type() == BSONType::Object) {
auto foundValidType = false;
for (auto&& elem : modExpr.Obj()) {
if (elem.fieldNameStringData() == kType) {
if (elem.type() == BSONType::String) {
if (elem.valueStringData() == kDate) {
_typeIsDate = true;
foundValidType = true;
} else if (elem.valueStringData() == kTimestamp) {
_typeIsDate = false;
foundValidType = true;
}
}
} else {
return Status(ErrorCodes::BadValue,
str::stream() << "Unrecognized $currentDate option: "
<< elem.fieldNameStringData());
}
}
if (!foundValidType) {
return Status(ErrorCodes::BadValue,
"The '$type' string field is required "
"to be 'date' or 'timestamp': "
"{$currentDate: {field : {$type: 'date'}}}");
}
} else {
return Status(ErrorCodes::BadValue,
str::stream() << typeName(modExpr.type())
<< " is not valid type for $currentDate."
" Please use a boolean ('true')"
" or a $type expression ({$type: 'timestamp/date'}).");
}
return Status::OK();
}
ModifierNode::ModifyResult CurrentDateNode::updateExistingElement(
mutablebson::Element* element, std::shared_ptr<FieldRef> elementPath) const {
setValue(element, _typeIsDate);
return ModifyResult::kNormalUpdate;
}
void CurrentDateNode::setValueForNewElement(mutablebson::Element* element) const {
setValue(element, _typeIsDate);
}
} // namespace mongo
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