Logo Search packages:      
Sourcecode: postgresql-8.4 version File versions

clusterdb.c

/*-------------------------------------------------------------------------
 *
 * clusterdb
 *
 * Portions Copyright (c) 2002-2009, PostgreSQL Global Development Group
 *
 * $PostgreSQL$
 *
 *-------------------------------------------------------------------------
 */

#include "postgres_fe.h"
#include "common.h"
#include "dumputils.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 *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'},
            {NULL, 0, NULL, 0}
      };

      const char *progname;
      int               optindex;
      int               c;

      const char *dbname = 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;
      char     *table = NULL;
      bool        verbose = false;

      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 = optarg;
                        break;
                  case 'p':
                        port = optarg;
                        break;
                  case 'U':
                        username = 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 = optarg;
                        break;
                  case 'a':
                        alldb = true;
                        break;
                  case 't':
                        table = optarg;
                        break;
                  case 'v':
                        verbose = true;
                        break;
                  default:
                        fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
                        exit(1);
            }
      }

      switch (argc - optind)
      {
            case 0:
                  break;
            case 1:
                  dbname = argv[optind];
                  break;
            default:
                  fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
                              progname, argv[optind + 1]);
                  fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
                  exit(1);
      }

      setup_cancel_handler();

      if (alldb)
      {
            if (dbname)
            {
                  fprintf(stderr, _("%s: cannot cluster all databases and a specific one at the same time\n"),
                              progname);
                  exit(1);
            }
            if (table)
            {
                  fprintf(stderr, _("%s: cannot cluster a specific table in all databases\n"),
                              progname);
                  exit(1);
            }

            cluster_all_databases(verbose, 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(progname);
            }

            cluster_one_database(dbname, verbose, table,
                                           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;

      initPQExpBuffer(&sql);

      appendPQExpBuffer(&sql, "CLUSTER");
      if (verbose)
            appendPQExpBuffer(&sql, " VERBOSE");
      if (table)
            appendPQExpBuffer(&sql, " %s", fmtId(table));
      appendPQExpBuffer(&sql, ";\n");

      conn = connectDatabase(dbname, host, port, username, prompt_password, progname);
      if (!executeMaintenanceCommand(conn, sql.data, echo))
      {
            if (table)
                  fprintf(stderr, _("%s: clustering of table \"%s\" in database \"%s\" failed: %s"),
                              progname, table, dbname, PQerrorMessage(conn));
            else
                  fprintf(stderr, _("%s: clustering of database \"%s\" failed: %s"),
                              progname, dbname, PQerrorMessage(conn));
            PQfinish(conn);
            exit(1);
      }
      PQfinish(conn);
      termPQExpBuffer(&sql);
}


static void
cluster_all_databases(bool verbose, const char *host, const char *port,
                                const char *username, enum trivalue prompt_password,
                                const char *progname, bool echo, bool quiet)
{
      PGconn         *conn;
      PGresult   *result;
      int               i;

      conn = connectDatabase("postgres", host, port, username, prompt_password, progname);
      result = executeQuery(conn, "SELECT datname FROM pg_database WHERE datallowconn ORDER BY 1;", progname, echo);
      PQfinish(conn);

      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);
            }

            cluster_one_database(dbname, verbose, NULL,
                                           host, port, username, prompt_password,
                                           progname, echo);
      }

      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 only\n"));
      printf(_("  -v, --verbose             write a lot of output\n"));
      printf(_("  --help                    show this help, then exit\n"));
      printf(_("  --version                 output version information, 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(_("\nRead the description of the SQL command CLUSTER for details.\n"));
      printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
}

Generated by  Doxygen 1.6.0   Back to index