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Optionally retrieve server_version string as well

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In a couple of places we'll need to report the human-readable
version number
This commit is contained in:
Ian Barwick
2014-12-29 15:52:53 +09:00
parent f94626bf7b
commit 8b69b1e16f
4 changed files with 27 additions and 17 deletions
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10
dbutils.c
View File

@@ -181,20 +181,24 @@ is_pgup(PGconn *conn, int timeout)
* Return the server version number for the connection provided
*/
int
get_server_version_num(PGconn *conn)
get_server_version(PGconn *conn, char *server_version)
{
PGresult *res;
res = PQexec(conn,
"SELECT current_setting('server_version_num')");
"SELECT current_setting('server_version_num'), "
"current_setting('server_version')");
if (PQresultStatus(res) != PGRES_TUPLES_OK)
{
log_err(_("Unable to determine server verson number:\n%s"),
log_err(_("Unable to determine server version number:\n%s"),
PQerrorMessage(conn));
PQclear(res);
return -1;
}
if(server_version != NULL)
strcpy(server_version, PQgetvalue(res, 0, 0));
return atoi(PQgetvalue(res, 0, 0));
}

2
dbutils.h
View File

@@ -30,7 +30,7 @@ PGconn *establish_db_connection_by_params(const char *keywords[],
int is_standby(PGconn *conn);
int is_witness(PGconn *conn, char *schema, char *cluster, int node_id);
bool is_pgup(PGconn *conn, int timeout);
int get_server_version_num(PGconn *conn);
int get_server_version(PGconn *conn, char *server_version);
int guc_set(PGconn *conn, const char *parameter, const char *op,
const char *value);
int guc_set_typed(PGconn *conn, const char *parameter, const char *op,

30
repmgr.c
View File

@@ -536,7 +536,7 @@ do_master_register(void)
/* Verify that master is a supported server version */
log_info(_("%s connecting to master database\n"), progname);
master_version_num = get_server_version_num(conn);
master_version_num = get_server_version(conn, NULL);
if(master_version_num < MIN_SUPPORTED_VERSION_NUM)
{
PQfinish(conn);
@@ -683,7 +683,10 @@ do_standby_register(void)
char sqlquery[QUERY_STR_LEN];
char schema_quoted[MAXLEN];
char master_version[MAXVERSIONSTR];
int master_version_num = 0;
char standby_version[MAXVERSIONSTR];
int standby_version_num = 0;
/* XXX: A lot of copied code from do_master_register! Refactor */
@@ -692,7 +695,7 @@ do_standby_register(void)
conn = establish_db_connection(options.conninfo, true);
/* Verify that standby is a supported server version */
standby_version_num = get_server_version_num(conn);
standby_version_num = get_server_version(conn, master_version);
if(standby_version_num < MIN_SUPPORTED_VERSION_NUM)
{
PQfinish(conn);
@@ -765,7 +768,7 @@ do_standby_register(void)
/* Verify that master is a supported server version */
log_info(_("%s connected to master, checking its state\n"), progname);
master_version_num = get_server_version_num(conn);
master_version_num = get_server_version(conn, standby_version);
if(master_version_num < MIN_SUPPORTED_VERSION_NUM)
{
if (master_version_num > 0)
@@ -784,8 +787,8 @@ do_standby_register(void)
PQfinish(conn);
PQfinish(master_conn);
/* XXX format version numbers */
log_err(_("%s needs versions of both master (%i) and standby (%i) to match.\n"),
progname, master_version_num, standby_version_num);
log_err(_("%s needs versions of both master (%s) and standby (%s) to match.\n"),
progname, master_version, standby_version);
exit(ERR_BAD_CONFIG);
}
@@ -901,7 +904,7 @@ do_standby_clone(void)
/* Verify that master is a supported server version */
log_info(_("%s connected to master, checking its state\n"), progname);
master_version_num = get_server_version_num(conn);
master_version_num = get_server_version(conn, NULL);
if(master_version_num < MIN_SUPPORTED_VERSION_NUM)
{
PQfinish(conn);
@@ -1396,7 +1399,7 @@ do_standby_promote(void)
/* Verify that standby is a supported server version */
log_info(_("%s connected to standby, checking its state\n"), progname);
standby_version_num = get_server_version_num(conn);
standby_version_num = get_server_version(conn, NULL);
if(standby_version_num < MIN_SUPPORTED_VERSION_NUM)
{
PQfinish(conn);
@@ -1505,7 +1508,10 @@ do_standby_follow(void)
retval;
char data_dir[MAXLEN];
char master_version[MAXVERSIONSTR];
int master_version_num = 0;
char standby_version[MAXVERSIONSTR];
int standby_version_num = 0;
@@ -1514,7 +1520,7 @@ do_standby_follow(void)
conn = establish_db_connection(options.conninfo, true);
/* Verify that standby is a supported server version */
standby_version_num = get_server_version_num(conn);
standby_version_num = get_server_version(conn, master_version);
if(standby_version_num < MIN_SUPPORTED_VERSION_NUM)
{
PQfinish(conn);
@@ -1577,7 +1583,7 @@ do_standby_follow(void)
/* Verify that master is a supported server version */
log_info(_("%s connected to master, checking its state\n"), progname);
master_version_num = get_server_version_num(conn);
master_version_num = get_server_version(conn, standby_version);
if(master_version_num < MIN_SUPPORTED_VERSION_NUM)
{
if (master_version_num > 0)
@@ -1596,8 +1602,8 @@ do_standby_follow(void)
PQfinish(conn);
PQfinish(master_conn);
/* XXX format version numbers */
log_err(_("%s needs versions of both master (%i) and standby (%i) to match.\n"),
progname, master_version_num, standby_version_num);
log_err(_("%s needs versions of both master (%s) and standby (%s) to match.\n"),
progname, master_version, standby_version);
exit(ERR_BAD_CONFIG);
}
@@ -1682,7 +1688,7 @@ do_witness_create(void)
}
/* Verify that master is a supported server version */
master_version_num = get_server_version_num(masterconn);
master_version_num = get_server_version(masterconn, NULL);
if(master_version_num < MIN_SUPPORTED_VERSION_NUM)
{
PQfinish(masterconn);

2
repmgrd.c
View File

@@ -280,7 +280,7 @@ main(int argc, char **argv)
/* Verify that server is a supported version */
log_info(_("%s connected to database, checking its state\n"), progname);
server_version_num = get_server_version_num(my_local_conn);
server_version_num = get_server_version(my_local_conn, NULL);
if(server_version_num < MIN_SUPPORTED_VERSION_NUM)
{
if (server_version_num > 0)