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Improve "repmgr cluster show" output generation

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This commit is contained in:
Ian Barwick
2017-07-19 21:34:53 +09:00
parent 49ac9cf9ca
commit f7d5621941
1 changed files with 66 additions and 44 deletions
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110
repmgr-action-cluster.c
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@@ -11,6 +11,22 @@
#include "repmgr-client-global.h"
#include "repmgr-action-cluster.h"
#define HEADER_COUNT 4
#define ROLE_HEADER 0
#define NAME_HEADER 1
#define UPSTREAM_NAME_HEADER 2
#define CONNINFO_HEADER 3
struct ColHeader {
char title[MAXLEN];
int max_length;
int cur_length;
};
struct ColHeader headers[HEADER_COUNT];
void
do_cluster_show(void)
@@ -18,13 +34,7 @@ do_cluster_show(void)
PGconn *conn;
NodeInfoList nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell;
char name_header[MAXLEN];
char upstream_header[MAXLEN];
int name_length,
upstream_length,
conninfo_length = 0;
int i;
/* Connect to local database to obtain cluster connection data */
log_verbose(LOG_INFO, _("connecting to database\n"));
@@ -43,34 +53,23 @@ do_cluster_show(void)
exit(ERR_BAD_CONFIG);
}
strncpy(name_header, _("Name"), MAXLEN);
strncpy(upstream_header, _("Upstream"), MAXLEN);
strncpy(headers[ROLE_HEADER].title, _("Role"), MAXLEN);
strncpy(headers[NAME_HEADER].title, _("Name"), MAXLEN);
strncpy(headers[UPSTREAM_NAME_HEADER].title, _("Upstream"), MAXLEN);
strncpy(headers[CONNINFO_HEADER].title, _("Connection string"), MAXLEN);
/*
* XXX if repmgr is ever localized into non-ASCII locales,
* use pg_wcssize() or similar to establish printed column length
*/
name_length = strlen(name_header);
upstream_length = strlen(upstream_header);
for (i = 0; i < HEADER_COUNT; i++)
{
headers[i].max_length = strlen(headers[i].title);
}
for (cell = nodes.head; cell; cell = cell->next)
{
int conninfo_length_cur,
name_length_cur,
upstream_length_cur;
conninfo_length_cur = strlen(cell->node_info->conninfo);
if (conninfo_length_cur > conninfo_length)
conninfo_length = conninfo_length_cur;
name_length_cur = strlen(cell->node_info->node_name);
if (name_length_cur > name_length)
name_length = name_length_cur;
upstream_length_cur = strlen(cell->node_info->upstream_node_name);
if (upstream_length_cur > upstream_length)
upstream_length = upstream_length_cur;
cell->node_info->conn = establish_db_connection_quiet(cell->node_info->conninfo);
if (PQstatus(conn) != CONNECTION_OK)
@@ -99,24 +98,47 @@ do_cluster_show(void)
}
PQfinish(cell->node_info->conn);
headers[ROLE_HEADER].cur_length = strlen(cell->node_info->details);
headers[NAME_HEADER].cur_length = strlen(cell->node_info->node_name);
headers[UPSTREAM_NAME_HEADER].cur_length = strlen(cell->node_info->upstream_node_name);
headers[CONNINFO_HEADER].cur_length = strlen(cell->node_info->conninfo);
for (i = 0; i < HEADER_COUNT; i++)
{
if (headers[i].cur_length > headers[i].max_length)
{
headers[i].max_length = headers[i].cur_length;
}
}
}
if (! runtime_options.csv)
{
int i;
printf(" Role | %-*s | %-*s | Connection string\n", name_length, name_header, upstream_length, upstream_header);
printf("----------+-");
printf(" %-*s | %-*s | %-*s | %-*s\n",
headers[ROLE_HEADER].max_length,
headers[ROLE_HEADER].title,
headers[NAME_HEADER].max_length,
headers[NAME_HEADER].title,
headers[UPSTREAM_NAME_HEADER].max_length,
headers[UPSTREAM_NAME_HEADER].title,
headers[CONNINFO_HEADER].max_length,
headers[CONNINFO_HEADER].title);
for (i = 0; i < name_length; i++)
printf("-");
printf("-");
printf("-+-");
for (i = 0; i < upstream_length; i++)
printf("-");
for (i = 0; i < HEADER_COUNT; i++)
{
int j;
for (j = 0; j < headers[i].max_length; j++)
printf("-");
printf("-+-");
for (i = 0; i < conninfo_length; i++)
printf("-");
if (i < (HEADER_COUNT - 1))
printf("-+-");
else
printf("-");
}
printf("\n");
}
@@ -125,16 +147,16 @@ do_cluster_show(void)
{
if (runtime_options.csv)
{
int connection_status =
(PQstatus(conn) == CONNECTION_OK) ? 0 : -1;
int connection_status = (PQstatus(conn) == CONNECTION_OK) ? 0 : -1;
printf("%i,%d\n", cell->node_info->node_id, connection_status);
}
else
{
printf("%-10s", cell->node_info->details);
printf("| %-*s ", name_length, cell->node_info->node_name);
printf("| %-*s ", upstream_length, cell->node_info->upstream_node_name);
printf("| %s\n", cell->node_info->conninfo);
printf( " %-*s ", headers[ROLE_HEADER].max_length, cell->node_info->details);
printf("| %-*s ", headers[NAME_HEADER].max_length, cell->node_info->node_name);
printf("| %-*s ", headers[UPSTREAM_NAME_HEADER].max_length , cell->node_info->upstream_node_name);
printf("| %-*s\n", headers[CONNINFO_HEADER].max_length, cell->node_info->conninfo);
}
}