SERVER-30534 Create a _configsvrDropCollection command

2 files changed, 91 insertions, 0 deletions

diff --git a/src/mongo/db/s/SConscript b/src/mongo/db/s/SConscript
index 6ae29f02a03..b05686b906e 100644
--- a/src/mongo/db/s/SConscript
+++ b/src/mongo/db/s/SConscript
@@ -169,6 +169,7 @@ env.Library(
         'config/configsvr_commit_chunk_migration_command.cpp',
         'config/configsvr_control_balancer_command.cpp',
         'config/configsvr_create_database_command.cpp',
+        'config/configsvr_drop_collection_command.cpp',
         'config/configsvr_enable_sharding_command.cpp',
         'config/configsvr_merge_chunk_command.cpp',
         'config/configsvr_move_chunk_command.cpp',
diff --git a/src/mongo/db/s/config/configsvr_drop_collection_command.cpp b/src/mongo/db/s/config/configsvr_drop_collection_command.cpp
new file mode 100644
index 00000000000..a611c469f5a
--- /dev/null
+++ b/src/mongo/db/s/config/configsvr_drop_collection_command.cpp
@@ -0,0 +1,90 @@
+/**
+ *    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/db/auth/authorization_session.h"
+#include "mongo/db/client.h"
+#include "mongo/db/commands.h"
+#include "mongo/db/operation_context.h"
+
+namespace mongo {
+
+namespace {
+
+/**
+ * Internal sharding command run on config servers to drop a collection from a database.
+ */
+class ConfigSvrDropCollectionCommand : public BasicCommand {
+public:
+    ConfigSvrDropCollectionCommand() : BasicCommand("_configsvrDropCollection") {}
+
+    bool slaveOk() const override {
+        return false;
+    }
+
+    bool adminOnly() const override {
+        return true;
+    }
+
+    bool supportsWriteConcern(const BSONObj& cmd) const override {
+        return true;
+    }
+
+    void help(std::stringstream& help) const override {
+        help << "Internal command, which is exported by the sharding config server. Do not call "
+                "directly. Drops a collection from a database.";
+    }
+
+    Status checkAuthForCommand(Client* client,
+                               const std::string& dbname,
+                               const BSONObj& cmdObj) override {
+        if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
+                ResourcePattern::forClusterResource(), ActionType::internal)) {
+            return Status(ErrorCodes::Unauthorized, "Unauthorized");
+        }
+        return Status::OK();
+    }
+
+    bool run(OperationContext* opCtx,
+             const std::string& dbname,
+             const BSONObj& cmdObj,
+             BSONObjBuilder& result) {
+        // TODO SERVER-30504: move logic over from DropCmd
+        return true;
+    }
+
+private:
+    static void _dropUnshardedCollectionFromShard(OperationContext* opCtx,
+                                                  const ShardId& shardId,
+                                                  const NamespaceString& nss,
+                                                  BSONObjBuilder* result){
+        // TODO SERVER-30504: move logic over from DropCmd
+    };
+} configsvrDropCollectionCmd;
+
+}  // namespace
+}  // namespace mongo