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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:04:16 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:04:16 +0000 |
commit | a68fb2d8219f6bccc573009600e9f23e89226a5e (patch) | |
tree | d742d35d14ae816e99293d2b01face30e9f3a46b /wsrep-lib/include/wsrep/storage_service.hpp | |
parent | Initial commit. (diff) | |
download | mariadb-10.6-upstream.tar.xz mariadb-10.6-upstream.zip |
Adding upstream version 1:10.6.11.upstream/1%10.6.11upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'wsrep-lib/include/wsrep/storage_service.hpp')
-rw-r--r-- | wsrep-lib/include/wsrep/storage_service.hpp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/wsrep-lib/include/wsrep/storage_service.hpp b/wsrep-lib/include/wsrep/storage_service.hpp new file mode 100644 index 00000000..e68548b7 --- /dev/null +++ b/wsrep-lib/include/wsrep/storage_service.hpp @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2018 Codership Oy <info@codership.com> + * + * This file is part of wsrep-lib. + * + * Wsrep-lib is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * Wsrep-lib 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>. + */ + +/** @file storage_service.hpp + * + * Abstract interface which defines required access to DBMS storage + * service. The service is used for storing streaming replication + * write set fragments into stable storage. The interface is used + * from locally processing transaction context only. Corresponding + * operations for high priority processing can be found from + * wsrep::high_priority_service interface. + */ +#ifndef WSREP_STORAGE_SERVICE_HPP +#define WSREP_STORAGE_SERVICE_HPP + +#include "transaction_id.hpp" +#include "id.hpp" +#include "buffer.hpp" +#include "xid.hpp" + +namespace wsrep +{ + // Forward declarations + class ws_handle; + class ws_meta; + class transaction; + + /** + * Storage service abstract interface. + */ + class storage_service + { + public: + virtual ~storage_service() { } + /** + * Start a new transaction for storage access. + * + * @param[out] ws_handle Write set handle for a new transaction + * + * @return Zero in case of success, non-zero on error. + */ + virtual int start_transaction(const wsrep::ws_handle&) = 0; + + virtual void adopt_transaction(const wsrep::transaction&) = 0; + /** + * Append fragment into stable storage. + */ + virtual int append_fragment(const wsrep::id& server_id, + wsrep::transaction_id client_id, + int flags, + const wsrep::const_buffer& data, + const wsrep::xid& xid) = 0; + + /** + * Update fragment meta data after certification process. + */ + virtual int update_fragment_meta(const wsrep::ws_meta&) = 0; + + /** + * Remove fragments from storage. The storage service must have + * adopted a transaction prior this call. + */ + virtual int remove_fragments() = 0; + + /** + * Commit the transaction. + */ + virtual int commit(const wsrep::ws_handle&, const wsrep::ws_meta&) = 0; + + /** + * Roll back the transaction. + */ + virtual int rollback(const wsrep::ws_handle&, + const wsrep::ws_meta&) = 0; + + + virtual void store_globals() = 0; + virtual void reset_globals() = 0; + }; +} + +#endif // WSREP_STORAGE_SERVICE_HPP |