diff options
Diffstat (limited to 'src/mongo/db/keys_collection_cache_reader_and_updater.cpp')
| -rw-r--r-- | src/mongo/db/keys_collection_cache_reader_and_updater.cpp | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/src/mongo/db/keys_collection_cache_reader_and_updater.cpp b/src/mongo/db/keys_collection_cache_reader_and_updater.cpp deleted file mode 100644 index 7c959c5f6c0..00000000000 --- a/src/mongo/db/keys_collection_cache_reader_and_updater.cpp +++ /dev/null @@ -1,147 +0,0 @@ -/** - * 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/keys_collection_cache_reader_and_updater.h" - -#include "mongo/client/read_preference.h" -#include "mongo/db/logical_clock.h" -#include "mongo/db/operation_context.h" -#include "mongo/s/catalog/sharding_catalog_client.h" -#include "mongo/s/client/shard_registry.h" -#include "mongo/s/grid.h" - -namespace mongo { - -namespace { - -/** - * Inserts a new key to the keys collection. - * - * Note: this relies on the fact that ShardRegistry returns a ShardLocal for config in config - * servers. In other words, it is relying on the fact that this will always execute the write - * locally and never remotely even if this node is no longer primary. - */ -Status insertNewKey(OperationContext* opCtx, - long long keyId, - const std::string& purpose, - const LogicalTime& expiresAt) { - KeysCollectionDocument newKey(keyId, purpose, TimeProofService::generateRandomKey(), expiresAt); - return Grid::get(opCtx)->catalogClient(opCtx)->insertConfigDocument( - opCtx, - KeysCollectionDocument::ConfigNS, - newKey.toBSON(), - ShardingCatalogClient::kMajorityWriteConcern); -} - -/** - * Returns a new LogicalTime with the seconds argument added to it. - */ -LogicalTime addSeconds(const LogicalTime& logicalTime, const Seconds& seconds) { - return LogicalTime(Timestamp(logicalTime.asTimestamp().getSecs() + seconds.count(), 0)); -} - -} // unnamed namespace - -KeysCollectionCacheReaderAndUpdater::KeysCollectionCacheReaderAndUpdater( - std::string purpose, Seconds keyValidForInterval) - : KeysCollectionCacheReader(purpose), - _purpose(std::move(purpose)), - _keyValidForInterval(keyValidForInterval) {} - -StatusWith<KeysCollectionDocument> KeysCollectionCacheReaderAndUpdater::refresh( - OperationContext* opCtx) { - - auto currentTime = LogicalClock::get(opCtx)->getClusterTime().getTime(); - auto keyStatus = Grid::get(opCtx)->catalogClient(opCtx)->getNewKeys( - opCtx, _purpose, currentTime, repl::ReadConcernLevel::kLocalReadConcern); - - if (!keyStatus.isOK()) { - return keyStatus.getStatus(); - } - - const auto& newKeys = keyStatus.getValue(); - auto keyIter = newKeys.cbegin(); - - LogicalTime currentKeyExpiresAt; - - long long keyId = currentTime.asTimestamp().asLL(); - - if (keyIter == newKeys.cend()) { - currentKeyExpiresAt = addSeconds(currentTime, _keyValidForInterval); - auto status = insertNewKey(opCtx, keyId, _purpose, currentKeyExpiresAt); - - if (!status.isOK()) { - return status; - } - - keyId++; - } else if (keyIter->getExpiresAt() < currentTime) { - currentKeyExpiresAt = addSeconds(currentTime, _keyValidForInterval); - auto status = insertNewKey(opCtx, keyId, _purpose, currentKeyExpiresAt); - - if (!status.isOK()) { - return status; - } - - keyId++; - ++keyIter; - } else { - currentKeyExpiresAt = keyIter->getExpiresAt(); - ++keyIter; - } - - // Create a new key in advance if we don't have a key on standby after the current one - // expires. - // Note: Convert this block into a loop if more reserved keys are desired. - if (keyIter == newKeys.cend()) { - auto reserveKeyExpiresAt = addSeconds(currentKeyExpiresAt, _keyValidForInterval); - auto status = insertNewKey(opCtx, keyId, _purpose, reserveKeyExpiresAt); - - if (!status.isOK()) { - return status; - } - } else if (keyIter->getExpiresAt() < currentTime) { - currentKeyExpiresAt = addSeconds(currentKeyExpiresAt, _keyValidForInterval); - auto status = insertNewKey(opCtx, keyId, _purpose, currentKeyExpiresAt); - - if (!status.isOK()) { - return status; - } - } - - return KeysCollectionCacheReader::refresh(opCtx); -} - -StatusWith<KeysCollectionDocument> KeysCollectionCacheReaderAndUpdater::getKey( - const LogicalTime& forThisTime) { - return KeysCollectionCacheReader::getKey(forThisTime); -} - -} // namespace mongo |