lib/wsrep-lib
1
0
Fork 0
mirror of https://github.com/codership/wsrep-lib.git synced 2025-07-28 20:02:00 +03:00
Code Activity

Implementation of client_state NBO operations.

Browse Source 
- Implemented calls to enter and leave NBO phase one and two
- Extended client_state mode checking to include m_nbo
- Changed client_state state and mode change sanity checks to
  print a warning and assert() instead of throwing exceptions
  to be more graceful in release builds.
This commit is contained in:
Teemu Ollakka
2019-03-07 12:06:16 +02:00
parent 45c64735d6
commit 1267e29b8f
6 changed files with 255 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
include/wsrep/client_state.hpp
View File

@ -100,10 +100,12 @@ namespace wsrep
/** Client is in total order isolation mode */
m_toi,
/** Client is executing rolling schema upgrade */
m_rsu
m_rsu,
/** Client is executing NBO */
m_nbo
};
static const int n_modes_ = m_rsu + 1;
static const int n_modes_ = m_nbo + 1;
/**
* Client state enumeration.
*
@ -669,6 +671,9 @@ namespace wsrep
* @param buffer Buffer containing the action to execute inside
* total order isolation section
* @param flags Provider flags for TOI operation
* @todo Flags argument is not necessary for TOI operation,
* they should always have start_transaction | commit
* when passed to provider.
*
* @return Zero on success, non-zero otherwise.
*/
@ -729,13 +734,45 @@ namespace wsrep
/**
* Begin non-blocking operation.
*
* The NBO operation is started by grabbing TOI critical
* section. The keys and buffer are certifed as in TOI
* operation. If the call fails due to error returned by
* the provider, the provider error code can be retrieved
* by current_error_status() call.
*
* @param keys Array of keys for NBO operation.
* @param buffer NBO write set
*
* @return Zero in case of success, non-zero in case of failure.
*/
int begin_nbo(const wsrep::key_array&);
int begin_nbo_phase_one(const wsrep::key_array& keys,
const wsrep::const_buffer& buffer);
/**
* End non-blocking operation
* End non-blocking operation phase after aquiring required
* resources for operation.
*/
int end_nbo();
int end_nbo_phase_one();
/**
* Begin non-blocking operation phase two. The keys argument
* passed to this call must contain the same keys which were
* passed to begin_nbo_phase_one().
*
* @todo Keys should be stored internally in client_state
* so that they would not be required as an argument
* here.
*
* @param keys Array of keys for non-blocking operation.
*/
int begin_nbo_phase_two(const wsrep::key_array& keys);
/**
* End non-blocking operation phase two. This call will
* release TOI critical section and set the mode to m_local.
*/
int end_nbo_phase_two();
/**
* Get reference to the client mutex.
@ -1011,6 +1048,7 @@ namespace wsrep
case wsrep::client_state::m_high_priority: return "high priority";
case wsrep::client_state::m_toi: return "toi";
case wsrep::client_state::m_rsu: return "rsu";
case wsrep::client_state::m_nbo: return "nbo";
}
return "unknown";
}