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/*-------------------------------------------------------------------------
*
* clusterdb
*
* Portions Copyright (c) 2002-2020, PostgreSQL Global Development Group
*
* src/bin/scripts/clusterdb.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
#include "common.h"
#include "common/logging.h"
#include "fe_utils/cancel.h"
#include "fe_utils/simple_list.h"
#include "fe_utils/string_utils.h"
static void cluster_one_database(const char *dbname, bool verbose, const char *table,
const char *host, const char *port,
const char *username, enum trivalue prompt_password,
const char *progname, bool echo);
static void cluster_all_databases(bool verbose, const char *maintenance_db,
const char *host, const char *port,
const char *username, enum trivalue prompt_password,
const char *progname, bool echo, bool quiet);
static void help(const char *progname);
int
main(int argc, char *argv[])
{
static struct option long_options[] = {
{"host", required_argument, NULL, 'h'},
{"port", required_argument, NULL, 'p'},
{"username", required_argument, NULL, 'U'},
{"no-password", no_argument, NULL, 'w'},
{"password", no_argument, NULL, 'W'},
{"echo", no_argument, NULL, 'e'},
{"quiet", no_argument, NULL, 'q'},
{"dbname", required_argument, NULL, 'd'},
{"all", no_argument, NULL, 'a'},
{"table", required_argument, NULL, 't'},
{"verbose", no_argument, NULL, 'v'},
{"maintenance-db", required_argument, NULL, 2},
{NULL, 0, NULL, 0}
};
const char *progname;
int optindex;
int c;
const char *dbname = NULL;
const char *maintenance_db = NULL;
char *host = NULL;
char *port = NULL;
char *username = NULL;
enum trivalue prompt_password = TRI_DEFAULT;
bool echo = false;
bool quiet = false;
bool alldb = false;
bool verbose = false;
SimpleStringList tables = {NULL, NULL};
pg_logging_init(argv[0]);
progname = get_progname(argv[0]);
set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));
handle_help_version_opts(argc, argv, "clusterdb", help);
while ((c = getopt_long(argc, argv, "h:p:U:wWeqd:at:v", long_options, &optindex)) != -1)
{
switch (c)
{
case 'h':
host = pg_strdup(optarg);
break;
case 'p':
port = pg_strdup(optarg);
break;
case 'U':
username = pg_strdup(optarg);
break;
case 'w':
prompt_password = TRI_NO;
break;
case 'W':
prompt_password = TRI_YES;
break;
case 'e':
echo = true;
break;
case 'q':
quiet = true;
break;
case 'd':
dbname = pg_strdup(optarg);
break;
case 'a':
alldb = true;
break;
case 't':
simple_string_list_append(&tables, optarg);
break;
case 'v':
verbose = true;
break;
case 2:
maintenance_db = pg_strdup(optarg);
break;
default:
fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
exit(1);
}
}
/*
* Non-option argument specifies database name as long as it wasn't
* already specified with -d / --dbname
*/
if (optind < argc && dbname == NULL)
{
dbname = argv[optind];
optind++;
}
if (optind < argc)
{
pg_log_error("too many command-line arguments (first is \"%s\")",
argv[optind]);
fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
exit(1);
}
setup_cancel_handler(NULL);
if (alldb)
{
if (dbname)
{
pg_log_error("cannot cluster all databases and a specific one at the same time");
exit(1);
}
if (tables.head != NULL)
{
pg_log_error("cannot cluster specific table(s) in all databases");
exit(1);
}
cluster_all_databases(verbose, maintenance_db, host, port, username, prompt_password,
progname, echo, quiet);
}
else
{
if (dbname == NULL)
{
if (getenv("PGDATABASE"))
dbname = getenv("PGDATABASE");
else if (getenv("PGUSER"))
dbname = getenv("PGUSER");
else
dbname = get_user_name_or_exit(progname);
}
if (tables.head != NULL)
{
SimpleStringListCell *cell;
for (cell = tables.head; cell; cell = cell->next)
{
cluster_one_database(dbname, verbose, cell->val,
host, port, username, prompt_password,
progname, echo);
}
}
else
cluster_one_database(dbname, verbose, NULL,
host, port, username, prompt_password,
progname, echo);
}
exit(0);
}
static void
cluster_one_database(const char *dbname, bool verbose, const char *table,
const char *host, const char *port,
const char *username, enum trivalue prompt_password,
const char *progname, bool echo)
{
PQExpBufferData sql;
PGconn *conn;
conn = connectDatabase(dbname, host, port, username, prompt_password,
progname, echo, false, false);
initPQExpBuffer(&sql);
appendPQExpBufferStr(&sql, "CLUSTER");
if (verbose)
appendPQExpBufferStr(&sql, " VERBOSE");
if (table)
{
appendPQExpBufferChar(&sql, ' ');
appendQualifiedRelation(&sql, table, conn, echo);
}
appendPQExpBufferChar(&sql, ';');
if (!executeMaintenanceCommand(conn, sql.data, echo))
{
if (table)
pg_log_error("clustering of table \"%s\" in database \"%s\" failed: %s",
table, PQdb(conn), PQerrorMessage(conn));
else
pg_log_error("clustering of database \"%s\" failed: %s",
PQdb(conn), PQerrorMessage(conn));
PQfinish(conn);
exit(1);
}
PQfinish(conn);
termPQExpBuffer(&sql);
}
static void
cluster_all_databases(bool verbose, const char *maintenance_db,
const char *host, const char *port,
const char *username, enum trivalue prompt_password,
const char *progname, bool echo, bool quiet)
{
PGconn *conn;
PGresult *result;
PQExpBufferData connstr;
int i;
conn = connectMaintenanceDatabase(maintenance_db, host, port, username,
prompt_password, progname, echo);
result = executeQuery(conn, "SELECT datname FROM pg_database WHERE datallowconn ORDER BY 1;", echo);
PQfinish(conn);
initPQExpBuffer(&connstr);
for (i = 0; i < PQntuples(result); i++)
{
char *dbname = PQgetvalue(result, i, 0);
if (!quiet)
{
printf(_("%s: clustering database \"%s\"\n"), progname, dbname);
fflush(stdout);
}
resetPQExpBuffer(&connstr);
appendPQExpBufferStr(&connstr, "dbname=");
appendConnStrVal(&connstr, dbname);
cluster_one_database(connstr.data, verbose, NULL,
host, port, username, prompt_password,
progname, echo);
}
termPQExpBuffer(&connstr);
PQclear(result);
}
static void
help(const char *progname)
{
printf(_("%s clusters all previously clustered tables in a database.\n\n"), progname);
printf(_("Usage:\n"));
printf(_(" %s [OPTION]... [DBNAME]\n"), progname);
printf(_("\nOptions:\n"));
printf(_(" -a, --all cluster all databases\n"));
printf(_(" -d, --dbname=DBNAME database to cluster\n"));
printf(_(" -e, --echo show the commands being sent to the server\n"));
printf(_(" -q, --quiet don't write any messages\n"));
printf(_(" -t, --table=TABLE cluster specific table(s) only\n"));
printf(_(" -v, --verbose write a lot of output\n"));
printf(_(" -V, --version output version information, then exit\n"));
printf(_(" -?, --help show this help, then exit\n"));
printf(_("\nConnection options:\n"));
printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
printf(_(" -p, --port=PORT database server port\n"));
printf(_(" -U, --username=USERNAME user name to connect as\n"));
printf(_(" -w, --no-password never prompt for password\n"));
printf(_(" -W, --password force password prompt\n"));
printf(_(" --maintenance-db=DBNAME alternate maintenance database\n"));
printf(_("\nRead the description of the SQL command CLUSTER for details.\n"));
printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
}