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MXS-1266: files are saved in GTID repo at creation time

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Files are saved in GTID repo at creation time: this allows to show
files without transactions via SHOW [FULL] BINARY LOGS

The FULL keywords add domain_id and server id to the output as file
prefix: 0/10122/mysql-bin.000080
This commit is contained in:
MassimilianoPinto
2017-05-29 10:58:02 +02:00
parent a6e4ff1c10
commit f66623c382
5 changed files with 111 additions and 20 deletions
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89
server/modules/routing/binlogrouter/blr_slave.c
View File

@ -100,9 +100,11 @@
*/
typedef struct
{
int seq_no; /* Output sequence in result test */
char *last_file; /* Last binlog file found in GTID repository */
DCB *client; /* Connected client DCB */
int seq_no; /* Output sequence in result test */
char *last_file; /* Last binlog file found in GTID repo */
const char *binlogdir; /* Binlog files cache dir */
bool extra_info; /* Add extra ouput info */
DCB *client; /* Connected client DCB */
} BINARY_LOG_DATA_RESULT;
extern void poll_fake_write_event(DCB *dcb);
@ -313,7 +315,8 @@ static inline void blr_get_file_fullpath(const char *binlog_file,
const char *root_dir,
char *full_path);
static int blr_show_binary_logs(ROUTER_INSTANCE *router,
ROUTER_SLAVE *slave);
ROUTER_SLAVE *slave,
const char *extra_data);
extern bool blr_parse_gtid(const char *gtid, MARIADB_GTID_ELEMS *info);
static int binary_logs_select_cb(void *data,
@ -555,7 +558,7 @@ blr_skip_leading_sql_comments(const char *sql_query)
* SHOW SLAVE HOSTS
* SHOW WARNINGS
* SHOW [GLOBAL] STATUS LIKE 'Uptime'
* SHOW BINARY LOGS
* SHOW [FULL] BINARY LOGS
*
* 12 set commands are supported:
* SET @master_binlog_checksum = @@global.binlog_checksum
@ -6754,15 +6757,17 @@ static bool blr_handle_show_stmt(ROUTER_INSTANCE *router,
blr_slave_show_warnings(router, slave);
return true;
}
else if (strcasecmp(word, "BINARY") == 0)
else if (strcasecmp(word, "BINARY") == 0 ||
(strcasecmp(word, "FULL") == 0 &&
strcasecmp(word, "BINARY")))
{
if (router->mariadb10_gtid)
{
blr_show_binary_logs(router, slave);
blr_show_binary_logs(router, slave, word);
}
else
{
char *errmsg = "SHOW BINARY LOGS needs the"
char *errmsg = "SHOW [FULL] BINARY LOGS needs the"
" 'mariadb10_slave_gtid' option to be set.";
MXS_ERROR("%s: %s",
errmsg,
@ -7664,18 +7669,20 @@ static inline void blr_get_file_fullpath(const char *binlog_file,
/**
* Returns the list of binlog files
* saved in GTID repo.
*
* It's called olny if mariadb10_slave_gtid option is set
*
* Limitation: it doesn't return the current binlog file
* unless a GTID is found in it.
*
* @param router The router instance
* @param slave The connected client
* @retun Sent bytes
* @param router The router instance
* @param slave The connected client
* @param extra_data Whether to dispay path file
* info before filename
* @retun Sent bytes
*/
static int
blr_show_binary_logs(ROUTER_INSTANCE *router, ROUTER_SLAVE *slave)
blr_show_binary_logs(ROUTER_INSTANCE *router,
ROUTER_SLAVE *slave,
const char *extra_data)
{
char current_file[BINLOG_FNAMELEN];
uint64_t current_pos = 0;
@ -7689,6 +7696,7 @@ blr_show_binary_logs(ROUTER_INSTANCE *router, ROUTER_SLAVE *slave)
int seqno;
char *errmsg = NULL;
BINARY_LOG_DATA_RESULT result = {};
bool extra_info = !strcasecmp(extra_data, "FULL");
/* Get current binlog finename and position */
spinlock_acquire(&router->binlog_lock);
@ -7730,6 +7738,8 @@ blr_show_binary_logs(ROUTER_INSTANCE *router, ROUTER_SLAVE *slave)
result.seq_no = seqno;
result.client = slave->dcb;
result.last_file = NULL;
result.binlogdir = router->binlogdir;
result.extra_info = extra_info;
/**
* Second part of result set:
@ -7846,6 +7856,8 @@ static int binary_logs_select_cb(void *data,
BINARY_LOG_DATA_RESULT *data_set = (BINARY_LOG_DATA_RESULT *)data;
DCB *dcb = data_set->client;
int ret = 1; // Failure
uint32_t fsize;
char file_size[40];
ss_dassert(cols >= 4 && dcb);
@ -7855,13 +7867,52 @@ static int binary_logs_select_cb(void *data,
values[3]) // Server ID
{
GWBUF *pkt;
char file_path[PATH_MAX + 1];
char filename[1 +
strlen(values[0]) +
BINLOG_FILE_EXTRA_INFO];
fsize = atoll(values[1]);
/* File size != 0 && server ID != 0 */
ss_dassert(atoll(values[1]) && atoll(values[3]));
ss_dassert(fsize && atoll(values[3]));
/**
* In GTID repo binlog file last pos is last GTID.
* In case of rotate_event or any event the "file_size"
* it's not correct.
* In case of binlog files with no transactions at all
* the saved size is 4.
*
* Let's get the real size by calling blr_slave_get_file_size()
*/
//Get binlog filename full-path
blr_get_file_fullpath(values[0],
data_set->binlogdir,
file_path);
//Get the file size
fsize = blr_slave_get_file_size(file_path);
sprintf(file_size, "%" PRIu32 "", fsize);
// Include extra output
if (data_set->extra_info)
{
sprintf(filename,
"%s/%s/%s",
values[2], // domain ID
values[3], // server ID
values[0]); // filename
}
else
{
sprintf(filename, "%s", values[0]); // filename only
}
/* Create the MySQL Result Set row */
if ((pkt = blr_create_result_row(values[0], // File name
values[1], // File size
if ((pkt = blr_create_result_row(filename, // File name
file_size, // File size
data_set->seq_no)) != NULL)
{
/* Increase sequence for next row */
@ -7965,7 +8016,7 @@ static bool blr_handle_complex_select(ROUTER_INSTANCE *router,
(strcasecmp(coln, "@@read_only") == 0 ||
strcasecmp(coln, "@@global.read_only") == 0))
{
blr_slave_send_id_ro(router, slave);
blr_slave_send_id_ro(router, slave);
return true;
}
else