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/*
ctdb database library
Copyright ( C ) Andrew Tridgell 2006
This library is free software ; you can redistribute it and / or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation ; either
version 2 of the License , or ( at your option ) any later version .
This library 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
Lesser General Public License for more details .
You should have received a copy of the GNU Lesser General Public
License along with this library ; if not , write to the Free Software
Foundation , Inc . , 59 Temple Place , Suite 330 , Boston , MA 02111 - 1307 USA
*/
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# ifndef _CTDB_H
# define _CTDB_H
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/*
structure passed to a ctdb call function
*/
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struct ctdb_call_info {
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TDB_DATA key ; /* record key */
TDB_DATA record_data ; /* current data in the record */
TDB_DATA * new_data ; /* optionally updated record data */
TDB_DATA * call_data ; /* optionally passed from caller */
TDB_DATA * reply_data ; /* optionally returned by function */
} ;
# define CTDB_ERR_INVALID 1
# define CTDB_ERR_NOMEM 2
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/*
ctdb flags
*/
# define CTDB_FLAG_SELF_CONNECT (1<<0)
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struct event_context ;
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/*
initialise ctdb subsystem
*/
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struct ctdb_context * ctdb_init ( struct event_context * ev ) ;
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/*
choose the transport
*/
int ctdb_set_transport ( struct ctdb_context * ctdb , const char * transport ) ;
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/*
set some flags
*/
void ctdb_set_flags ( struct ctdb_context * ctdb , unsigned flags ) ;
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/*
set max acess count before a dmaster migration
*/
void ctdb_set_max_lacount ( struct ctdb_context * ctdb , unsigned count ) ;
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/*
tell ctdb what address to listen on , in transport specific format
*/
int ctdb_set_address ( struct ctdb_context * ctdb , const char * address ) ;
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/*
tell ctdb what nodes are available . This takes a filename , which will contain
1 node address per line , in a transport specific format
*/
int ctdb_set_nlist ( struct ctdb_context * ctdb , const char * nlist ) ;
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/*
start the ctdb protocol
*/
int ctdb_start ( struct ctdb_context * ctdb ) ;
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/*
error string for last ctdb error
*/
const char * ctdb_errstr ( struct ctdb_context * ) ;
/* a ctdb call function */
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typedef int ( * ctdb_fn_t ) ( struct ctdb_call_info * ) ;
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/*
setup a ctdb call function
*/
int ctdb_set_call ( struct ctdb_context * ctdb , ctdb_fn_t fn , int id ) ;
/*
attach to a ctdb database
*/
int ctdb_attach ( struct ctdb_context * ctdb , const char * name , int tdb_flags ,
int open_flags , mode_t mode ) ;
/*
make a ctdb call . The associated ctdb call function will be called on the DMASTER
for the given record
*/
int ctdb_call ( struct ctdb_context * ctdb , TDB_DATA key , int call_id ,
TDB_DATA * call_data , TDB_DATA * reply_data ) ;
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/*
wait for all nodes to be connected - useful for test code
*/
void ctdb_connect_wait ( struct ctdb_context * ctdb ) ;
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/*
wait until we ' re the only node left
*/
void ctdb_wait_loop ( struct ctdb_context * ctdb ) ;
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/* return vnn of this node */
uint32_t ctdb_get_vnn ( struct ctdb_context * ctdb ) ;
# endif