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Resolve transition from catchup to follow mode.

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This commit is contained in:
Mark Riddoch
2014-10-14 11:43:08 +01:00
parent 52e8b33422
commit fe0e7c74d0
5 changed files with 325 additions and 164 deletions
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14
server/modules/include/blr.h
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@ -33,6 +33,8 @@
#include <buffer.h>
#include <pthread.h>
#include <memlog.h>
#define BINLOG_FNAMELEN 16
#define BLR_PROTOCOL "MySQLBackend"
#define BINLOG_MAGIC { 0xfe, 0x62, 0x69, 0x6e }
@ -43,8 +45,6 @@
#define BLR_STATS_FREQ 60
#define BLR_NSTATS_MINUTES 30
#define QUEUE_SLAVE 1
/**
* High and Low water marks for the slave dcb. These values can be overriden
* by the router options highwater and lowwater.
@ -166,6 +166,7 @@ typedef struct router_slave {
*router; /*< Pointer to the owning router */
struct router_slave *next;
SLAVE_STATS stats; /*< Slave statistics */
MEMLOG *clog;
#if defined(SS_DEBUG)
skygw_chk_t rses_chk_tail;
#endif
@ -245,6 +246,8 @@ typedef struct router_instance {
int binlog_fd; /*< File descriptor of the binlog
* file being written
*/
uint64_t last_written; /*< Position of last event written */
char prevbinlog[BINLOG_FNAMELEN+1];
BLFILE *files; /*< Files used by the slaves */
SPINLOCK fileslock; /*< Lock for the files queue above */
unsigned int low_water; /*< Low water mark for client DCB */
@ -291,11 +294,12 @@ static char *blrm_states[] = { "Unconnected", "Authenticated", "Timestamp retrie
#define BLRS_UNREGISTERED 0x0001
#define BLRS_REGISTERED 0x0002
#define BLRS_DUMPING 0x0003
#define BLRS_ERRORED 0x0004
#define BLRS_MAXSTATE 0x0003
#define BLRS_MAXSTATE 0x0004
static char *blrs_states[] = { "Created", "Unregistered", "Registered",
"Sending binlogs" };
"Sending binlogs", "Errored" };
/**
* Slave catch-up status
@ -406,6 +410,6 @@ extern void blr_write_binlog_record(ROUTER_INSTANCE *, REP_HEADER *,uint8_t *);
extern void blr_file_rotate(ROUTER_INSTANCE *, char *, uint64_t);
extern void blr_file_flush(ROUTER_INSTANCE *);
extern BLFILE *blr_open_binlog(ROUTER_INSTANCE *, char *);
extern GWBUF *blr_read_binlog(BLFILE *, unsigned int, REP_HEADER *);
extern GWBUF *blr_read_binlog(ROUTER_INSTANCE *, BLFILE *, unsigned int, REP_HEADER *);
extern void blr_close_binlog(ROUTER_INSTANCE *, BLFILE *);
#endif