SERVER-33488 conditionally update WT size metadata during startup recovery

1 files changed, 71 insertions, 0 deletions

diff --git a/src/mongo/db/server_recovery.cpp b/src/mongo/db/server_recovery.cpp
new file mode 100644
index 00000000000..4f4f46f0293
--- /dev/null
+++ b/src/mongo/db/server_recovery.cpp
@@ -0,0 +1,71 @@
+/**
+ * Copyright (C) 2018 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/server_recovery.h"
+
+#include "mongo/db/namespace_string.h"
+
+namespace mongo {
+namespace {
+const auto getInReplicationRecovery = ServiceContext::declareDecoration<bool>();
+const auto getSizeRecoveryState = ServiceContext::declareDecoration<SizeRecoveryState>();
+}  // namespace
+
+bool SizeRecoveryState::collectionNeedsSizeAdjustment(const std::string& ns) const {
+    if (!inReplicationRecovery(getGlobalServiceContext())) {
+        return true;
+    }
+
+    if (NamespaceString::oplog(ns)) {
+        return true;
+    }
+
+    stdx::lock_guard<stdx::mutex> lock(_mutex);
+    return _collectionsAlwaysNeedingSizeAdjustment.count(ns) > 0;
+}
+
+void SizeRecoveryState::markCollectionAsAlwaysNeedsSizeAdjustment(const std::string& ns) {
+    stdx::lock_guard<stdx::mutex> lock(_mutex);
+    _collectionsAlwaysNeedingSizeAdjustment.insert(ns);
+}
+
+void SizeRecoveryState::clearStateAfterRecovery() {
+    stdx::lock_guard<stdx::mutex> lock(_mutex);
+    _collectionsAlwaysNeedingSizeAdjustment.clear();
+}
+}  // namespace mongo
+
+bool& mongo::inReplicationRecovery(ServiceContext* serviceCtx) {
+    return getInReplicationRecovery(serviceCtx);
+}
+
+mongo::SizeRecoveryState& mongo::sizeRecoveryState(ServiceContext* serviceCtx) {
+    return getSizeRecoveryState(serviceCtx);
+}