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/**
* Copyright (C) 2020-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/logv2/log.h"
#include "mongo/platform/basic.h"
#include "mongo/db/matcher/match_expression_dependencies.h"
#include "mongo/db/pipeline/expression_context.h"
#include "mongo/db/profile_filter_impl.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kQuery
namespace mongo {
namespace {
boost::intrusive_ptr<ExpressionContext> makeExpCtx() {
// The namespace string can't be database-specific, because the profile filter applies to all
// databases in the process.
// Similar to collection validators, it's not safe to share an opCtx in a stored query.
return make_intrusive<ExpressionContext>(nullptr, nullptr, NamespaceString{});
}
} // namespace
ProfileFilterImpl::ProfileFilterImpl(BSONObj expr) : _matcher(expr.getOwned(), makeExpCtx()) {
DepsTracker deps;
match_expression::addDependencies(_matcher.getMatchExpression(), &deps);
uassert(4910201,
"Profile filter is not allowed to depend on metadata",
!deps.getNeedsAnyMetadata());
// We only bother tracking top-level fields as dependencies.
for (auto&& field : deps.fields) {
_dependencies.emplace(FieldPath(std::move(field)).front());
}
_needWholeDocument = deps.needWholeDocument;
// Remember a list of functions we'll call whenever we need to build BSON from CurOp.
_makeBSON = OpDebug::appendStaged(_dependencies, _needWholeDocument);
}
bool ProfileFilterImpl::matches(OperationContext* opCtx,
const OpDebug& op,
const CurOp& curop) const {
try {
return _matcher.matches(_makeBSON({opCtx, op, curop}));
} catch (const DBException& e) {
LOGV2_DEBUG(4910202, 5, "Profile filter threw an exception", "exception"_attr = e);
return false;
}
}
// PathlessOperatorMap is required for parsing a MatchExpression.
MONGO_INITIALIZER_GENERAL(ProfileFilterDefault,
("PathlessOperatorMap",
"MatchExpressionParser",
"EndExpressionRegistration"),
())
(InitializerContext*) {
try {
if (auto expr = serverGlobalParams.defaultProfileFilter) {
ProfileFilter::setDefault(std::make_shared<ProfileFilterImpl>(*expr));
}
} catch (AssertionException& e) {
// Add more context to the error
uasserted(ErrorCodes::FailedToParse,
str::stream() << "Failed to parse option operationProfiling.filter: "
<< e.reason());
}
}
} // namespace mongo
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