SERVER-52810 Create the _shardsvrDropDatabase command

1 files changed, 107 insertions, 0 deletions

diff --git a/src/mongo/db/s/shardsvr_drop_database_command.cpp b/src/mongo/db/s/shardsvr_drop_database_command.cpp
new file mode 100644
index 00000000000..5d8095ce197
--- /dev/null
+++ b/src/mongo/db/s/shardsvr_drop_database_command.cpp
@@ -0,0 +1,107 @@
+/**
+ *    Copyright (C) 2018-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.
+ */
+
+#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
+
+#include "mongo/db/auth/authorization_session.h"
+#include "mongo/db/commands.h"
+#include "mongo/db/drop_database_gen.h"
+#include "mongo/db/s/config/sharding_catalog_manager.h"
+#include "mongo/db/s/sharding_logging.h"
+#include "mongo/s/catalog/dist_lock_manager.h"
+#include "mongo/s/catalog/type_database.h"
+#include "mongo/s/catalog_cache.h"
+#include "mongo/s/grid.h"
+#include "mongo/s/request_types/sharded_ddl_commands_gen.h"
+#include "mongo/s/sharded_collections_ddl_parameters_gen.h"
+
+namespace mongo {
+namespace {
+
+class ShardsvrDropDatabaseCommand final : public TypedCommand<ShardsvrDropDatabaseCommand> {
+public:
+    bool acceptsAnyApiVersionParameters() const override {
+        return true;
+    }
+
+    AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
+        return Command::AllowedOnSecondary::kNever;
+    }
+
+    std::string help() const override {
+        return "Internal command, which is exported by the primary sharding server. Do not call "
+               "directly. Drops a database.";
+    }
+
+    using Request = ShardsvrDropDatabase;
+    using Response = DropDatabaseReply;
+
+    class Invocation final : public InvocationBase {
+    public:
+        using InvocationBase::InvocationBase;
+
+        Response typedRun(OperationContext* opCtx) {
+            uassert(ErrorCodes::IllegalOperation,
+                    "_shardsvrDropDatabase can only be run on primary shard servers",
+                    serverGlobalParams.clusterRole == ClusterRole::ShardServer);
+
+            const StringData dbName = request().getDbName();
+
+            const auto configShard = Grid::get(opCtx)->shardRegistry()->getConfigShard();
+            auto cmdResponse = uassertStatusOK(configShard->runCommandWithFixedRetryAttempts(
+                opCtx,
+                ReadPreferenceSetting(ReadPreference::PrimaryOnly),
+                "admin",
+                CommandHelpers::appendMajorityWriteConcern(BSON("_configsvrDropDatabase" << dbName),
+                                                           opCtx->getWriteConcern()),
+                Shard::RetryPolicy::kIdempotent));
+
+            uassertStatusOK(cmdResponse.commandStatus);
+
+            return Response::parse(IDLParserErrorContext("dropDatabase-reply"),
+                                   cmdResponse.response);
+        }
+
+        bool supportsWriteConcern() const override {
+            return true;
+        }
+
+        void doCheckAuthorization(OperationContext*) const override {}
+
+        /**
+         * The ns() for when Request's IDL specifies "namespace: concatenate_with_db".
+         */
+        NamespaceString ns() const override {
+            return {"", ""};
+        }
+    };
+} shardsvrDropDatabaseCommand;
+
+}  // namespace
+}  // namespace mongo
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