1 files changed, 93 insertions, 0 deletions
diff --git a/src/mongo/s/catalog/sharding_catalog_manager_database_operations.cpp b/src/mongo/s/catalog/sharding_catalog_manager_database_operations.cpp
new file mode 100644
index 00000000000..9580bdd51dc
--- /dev/null
+++ b/src/mongo/s/catalog/sharding_catalog_manager_database_operations.cpp
@@ -0,0 +1,93 @@
+/**
+ *    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.
+ */
+
+#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
+
+#include "mongo/s/catalog/sharding_catalog_manager.h"
+
+#include "mongo/db/namespace_string.h"
+#include "mongo/s/catalog/sharding_catalog_client_impl.h"
+#include "mongo/s/catalog/type_database.h"
+#include "mongo/s/client/shard.h"
+#include "mongo/s/grid.h"
+#include "mongo/util/log.h"
+
+namespace mongo {
+
+Status ShardingCatalogManager::enableSharding(OperationContext* opCtx, const std::string& dbName) {
+    invariant(nsIsDbOnly(dbName));
+
+    if (dbName == NamespaceString::kConfigDb || dbName == NamespaceString::kAdminDb) {
+        return {
+            ErrorCodes::IllegalOperation,
+            str::stream() << "Enabling sharding on system configuration databases is not allowed"};
+    }
+
+    // Lock the database globally to prevent conflicts with simultaneous database
+    // creation/modification.
+    auto scopedDistLock = Grid::get(opCtx)->catalogClient()->getDistLockManager()->lock(
+        opCtx, dbName, "enableSharding", DistLockManager::kDefaultLockTimeout);
+    if (!scopedDistLock.isOK()) {
+        return scopedDistLock.getStatus();
+    }
+
+    // Check for case sensitivity violations
+    DatabaseType db;
+    Status status = Grid::get(opCtx)->catalogClient()->_checkDbDoesNotExist(opCtx, dbName, &db);
+    if (status.isOK()) {
+        // Database does not exist, create a new entry
+        auto newShardIdStatus = ShardingCatalogClientImpl::_selectShardForNewDatabase(
+            opCtx, Grid::get(opCtx)->shardRegistry());
+        if (!newShardIdStatus.isOK()) {
+            return newShardIdStatus.getStatus();
+        }
+
+        const ShardId& newShardId = newShardIdStatus.getValue();
+
+        log() << "Placing [" << dbName << "] on: " << newShardId;
+
+        db.setName(dbName);
+        db.setPrimary(newShardId);
+        db.setSharded(true);
+    } else if (status.code() == ErrorCodes::NamespaceExists) {
+        if (db.getSharded()) {
+            return Status::OK();
+        }
+
+        // Database exists, so just update it
+        db.setSharded(true);
+    } else {
+        return status;
+    }
+
+    log() << "Enabling sharding for database [" << dbName << "] in config db";
+
+    return Grid::get(opCtx)->catalogClient()->updateDatabase(opCtx, dbName, db);
+}
+
+}  // namespace mongo