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Refactored client_service interface out of client_context

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This commit is contained in:
Teemu Ollakka
2018-06-14 19:44:38 +03:00
parent 1ca3f7b649
commit 256000f934
12 changed files with 391 additions and 265 deletions
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72
include/wsrep/client_service.hpp
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@ -9,16 +9,22 @@
* which will be called by the wsrep-lib under certain circumstances,
* for example when a transaction rollback is required by internal
* wsrep-lib operation or applier client needs to apply a write set.
*
* \todo Figure out better name for this interface.
*/
#include "buffer.hpp"
namespace wsrep
{
class client_service
{
public:
client_service(wsrep::provider& provider)
: provider_(provider) { }
/*!
*
*/
virtual bool is_autocommit() const = 0;
/*!
* Return true if two pahase commit is required for transaction
* to commit.
@ -26,7 +32,8 @@ namespace wsrep
virtual bool do_2pc() const = 0;
/*!
* Return true if the current transaction has been interrupted.
* Return true if the current transaction has been interrupted
* by the DBMS.
*/
virtual bool interrupted() const = 0;
@ -45,28 +52,30 @@ namespace wsrep
/*!
* Set up a data for replication.
*/
virtual int prepare_data_for_replication(wsrep::data& data) = 0;
virtual int prepare_data_for_replication(wsrep::client_context&, const wsrep::transaction_context&) = 0;
//
// Streaming
//
virtual size_t bytes_generated() const = 0;
virtual int prepare_fragment_for_replication(
wsrep::client_context&, const wsrep::transaction_context&, wsrep::mutable_buffer&) = 0;
virtual void remove_fragments(const wsrep::transaction_context&) = 0;
/*!
* Apply a write set.
*/
virtual int apply() = 0;
/*!
* Prepare a transaction for commit.
*/
virtual int prepare() = 0;
virtual int apply(wsrep::client_context&, const wsrep::const_buffer&) = 0;
/*!
* Commit transaction.
*/
virtual int commit() = 0;
virtual int commit(wsrep::client_context&, const wsrep::ws_handle&, const wsrep::ws_meta&) = 0;
/*!
* Roll back transaction.
*/
virtual int rollback() = 0;
virtual int rollback(wsrep::client_context&) = 0;
/*!
* Forcefully shut down the DBMS process or replication system.
@ -84,7 +93,7 @@ namespace wsrep
* \todo This should not be visible to DBMS level, should be
* handled internally by wsrep-lib.
*/
virtual void will_replay() = 0;
virtual void will_replay(const wsrep::transaction_context&) = 0;
/*!
* Replay the current transaction. The implementation must put
@ -94,7 +103,7 @@ namespace wsrep
* \todo This should not be visible to DBMS level, should be
* handled internally by wsrep-lib.
*/
virtual int replay() = 0;
virtual enum wsrep::provider::status replay(wsrep::transaction_context&) = 0;
/*!
* Wait until all replaying transactions have been finished
@ -103,13 +112,32 @@ namespace wsrep
* \todo This should not be visible to DBMS level, should be
* handled internally by wsrep-lib.
*/
virtual void wait_for_replayers() = 0;
virtual void wait_for_replayers(wsrep::client_context&, wsrep::unique_lock<wsrep::mutex>&) = 0;
// Streaming replication
/*!
* Append a write set fragment into fragment storage.
*/
virtual int append_fragment() = 0;
virtual int append_fragment(const wsrep::transaction_context&, int flag, const wsrep::const_buffer&) = 0;
//
// Debug interface
//
/*!
* Enter debug sync point.
*
* @params sync_point Name of the debug sync point.
*/
virtual void debug_sync(wsrep::client_context&, const char* sync_point) = 0;
/*!
* Forcefully kill the process if the crash_point has
* been enabled.
*/
virtual void debug_crash(const char* crash_point) = 0;
protected:
wsrep::provider& provider_;
};
/*!
@ -119,18 +147,6 @@ namespace wsrep
class client_debug_callback
{
public:
/*!
* Enter debug sync point.
*
* @params sync_point Name of the debug sync point.
*/
void debug_sync(const char* sync_point) = 0;
/*!
* Forcefully kill the process if the suicide_point has
* been enabled.
*/
void debug_suicide(const char* suicide_point) = 0;
};