diff options
Diffstat (limited to 'src/mongo/db/query/stats/collection_statistics_impl.cpp')
-rw-r--r-- | src/mongo/db/query/stats/collection_statistics_impl.cpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/mongo/db/query/stats/collection_statistics_impl.cpp b/src/mongo/db/query/stats/collection_statistics_impl.cpp new file mode 100644 index 00000000000..b03829b3f1d --- /dev/null +++ b/src/mongo/db/query/stats/collection_statistics_impl.cpp @@ -0,0 +1,72 @@ +/** + * Copyright (C) 2022-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/db/query/stats/collection_statistics_impl.h" + +#include "mongo/db/client.h" +#include "mongo/db/query/stats/stats_catalog.h" + +namespace mongo::stats { + +CollectionStatisticsImpl::CollectionStatisticsImpl(double cardinality, const NamespaceString& nss) + : _cardinality{cardinality}, _histograms{}, _nss{nss} {}; + +double CollectionStatisticsImpl::getCardinality() const { + return _cardinality; +} + +void CollectionStatisticsImpl::addHistogram(const std::string& path, + std::shared_ptr<ArrayHistogram> histogram) const { + _histograms[path] = histogram; +} + +const ArrayHistogram* CollectionStatisticsImpl::getHistogram(const std::string& path) const { + if (auto mapIt = _histograms.find(path); mapIt != _histograms.end()) { + return mapIt->second.get(); + } else { + uassert(8423368, "no current client", Client::getCurrent()); + auto opCtx = Client::getCurrent()->getOperationContext(); + uassert(8423367, "no operation context", opCtx); + StatsCatalog& statsCatalog = StatsCatalog::get(opCtx); + const auto swHistogram = statsCatalog.getHistogram(opCtx, _nss, path); + if (!swHistogram.isOK()) { + if (swHistogram != ErrorCodes::NamespaceNotFound) { + uasserted(swHistogram.getStatus().code(), + str::stream() << "Error getting histograms for path " << _nss << " : " + << path << swHistogram.getStatus().reason()); + } + return nullptr; + } + const auto histogram = std::move(swHistogram.getValue()); + addHistogram(path, histogram); + return histogram.get(); + } +} + +} // namespace mongo::stats |