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MXS-1266: saving GTID components into gtid_maps storage. part1

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Saving GTID components into gtid_maps storage will allow to create a
hiearchical binlog cache dir.

Empty GTID  for master registration can be specified with SET
@@global.gtid_slave_pos = ‘’
This commit is contained in:
MassimilianoPinto
2017-05-19 10:23:35 +02:00
parent 56cf06ee08
commit 6c86e1ef2f
5 changed files with 262 additions and 116 deletions
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107
server/modules/routing/binlogrouter/blr_slave.c
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@ -274,7 +274,6 @@ static bool blr_slave_gtid_request(ROUTER_INSTANCE *router,
static int blr_send_fake_gtid_list(ROUTER_SLAVE *slave,
const char *gtid,
uint32_t serverid);
static bool blr_parse_gtid(const char *gtid, MARIADB_GTID_ELEMS *info);
static bool blr_handle_maxwell_stmt(ROUTER_INSTANCE *router,
ROUTER_SLAVE *slave,
const char *maxwell_stmt);
@ -297,6 +296,8 @@ static inline void blr_get_file_fullpath(const char *binlog_file,
const char *root_dir,
char *full_path);
extern bool blr_parse_gtid(const char *gtid, MARIADB_GTID_ELEMS *info);
/**
* Process a request packet from the slave server.
*
@ -6328,7 +6329,7 @@ static bool blr_slave_gtid_request(ROUTER_INSTANCE *router,
}
else
{
/* A Gtid has been found */
/* GTID has been found */
MXS_INFO("Found GTID '%s' for slave %lu at %s:%lu",
slave->mariadb_gtid,
(unsigned long)slave->serverid,
@ -6500,48 +6501,6 @@ static int blr_send_fake_gtid_list(ROUTER_SLAVE *slave,
return gl_event ? slave->dcb->func.write(slave->dcb, gl_event) : 0;
}
/**
* Extract the GTID the client requested
*
* @param gtid Then input GTID
* @param info The GTID structure to fil
* @return True for a parsed GTID string or false
*/
static bool blr_parse_gtid(const char *gtid, MARIADB_GTID_ELEMS *info)
{
const char *ptr = gtid;
int read = 0;
int len = strlen(gtid);
while (ptr < gtid + len)
{
if (!isdigit(*ptr))
{
ptr++;
}
else
{
char *end;
switch (read)
{
case 0:
info->domain_id = strtoul(ptr, &end, 10);
break;
case 1:
info->server_id = strtoul(ptr, &end, 10);
break;
case 2:
info->seq_no = strtoul(ptr, &end, 10);
break;
}
read++;
ptr = end;
}
}
return (info->server_id && info->seq_no) ? true : false;
}
/**
* Handle received Maxwell statements from clients
*
@ -6967,19 +6926,24 @@ static bool blr_handle_set_stmt(ROUTER_INSTANCE *router,
{
if (slave->serverid != 0)
{
MXS_ERROR("Master GTID registration can be sent only via administration connection");
MXS_ERROR("Master GTID registration can be sent only"
" via administration connection");
blr_slave_send_error_packet(slave,
"Master GTID registration cannot be issued by a regitrating slave.",
(unsigned int)1198, NULL);
"Master GTID registration cannot be"
" issued by a registrating slave.",
1198, NULL);
return false;
}
if (router->master_state != BLRM_SLAVE_STOPPED)
{
MXS_ERROR("Master GTID registration needs stopped slave: issue STOP SLAVE first.");
MXS_ERROR("Master GTID registration needs stopped replication:"
" issue STOP SLAVE first.");
blr_slave_send_error_packet(slave,
"Cannot use Master GTID registration with a running slave; "
"run STOP SLAVE first",
(unsigned int)1198, NULL);
"Cannot use Master GTID registration"
" with running replication;"
" run STOP SLAVE first",
1198,
NULL);
return true;
}
/* If not mariadb GTID an error message will be returned */
@ -6988,34 +6952,50 @@ static bool blr_handle_set_stmt(ROUTER_INSTANCE *router,
if ((word = strtok_r(NULL, sep, &brkb)) != NULL)
{
char heading[GTID_MAX_LEN + 1];
MXS_INFO("Binlog server requests GTID '%s' to master",
word);
MARIADB_GTID_ELEMS gtid_elms = {};
// TODO: gtid_strip_chars routine for this
strcpy(heading, word + 1);
heading[strlen(heading) - 1] = '\0';
if (!heading[0])
MXS_INFO("Requesting GTID (%s) from Master server.",
!heading[0] ? "empty value" : heading);
/* Parse the non empty GTID value */
if (heading[0] && !blr_parse_gtid(heading, &gtid_elms))
{
MXS_ERROR("Cannot request empty GTID right now");
static const char *err_fmt = "Invalid format for GTID ('%s')"
" set request; use 'X-Y-Z'";
char err_msg[sizeof(err_fmt) + GTID_MAX_LEN + 1];
sprintf(err_msg, err_fmt, heading);
MXS_ERROR(err_msg);
/* Stop Master registration */
blr_slave_send_error_packet(slave,
"Empty GTID not implemented righ now",
(unsigned int)1198, NULL);
return false;
err_msg,
1198,
NULL);
}
else
{
strcpy(router->last_mariadb_gtid, heading);
blr_slave_send_ok(router, slave);
return true;
}
return true;
}
}
else
{
MXS_ERROR("Master GTID registration needs 'mariadb10_master_gtid' option to be set.");
MXS_ERROR("Master GTID registration needs 'mariadb10_master_gtid'"
" option to be set.");
blr_slave_send_error_packet(slave,
"Master GTID registration needs 'mariadb10_master_gtid' option to be set.",
(unsigned int)1198, NULL);
"Master GTID registration needs"
" 'mariadb10_master_gtid' option"
" to be set first.",
1198,
NULL);
return true;
}
}
@ -7078,7 +7058,8 @@ static bool blr_handle_set_stmt(ROUTER_INSTANCE *router,
{
if ((word = strtok_r(NULL, sep, &brkb)) == NULL)
{
MXS_ERROR("%s: Truncated SET NAMES command.", router->service->name);
MXS_ERROR("%s: Truncated SET NAMES command.",
router->service->name);
return false;
}
else if (strcasecmp(word, "latin1") == 0)