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Change clusterdb and vacuumdb into C programs.
This commit is contained in:
Peter Eisentraut
245
src/bin/scripts/clusterdb.c
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245
src/bin/scripts/clusterdb.c
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/*-------------------------------------------------------------------------
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*
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* clusterdb
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*
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* Portions Copyright (c) 2002-2003, PostgreSQL Global Development Group
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*
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* $Header: /cvsroot/pgsql/src/bin/scripts/clusterdb.c,v 1.1 2003/06/18 12:19:11 petere Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres_fe.h"
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#include "common.h"
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#include "dumputils.h"
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static
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void cluster_one_database(const char *dbname, const char *table,
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const char *host, const char *port, const char *username, bool password,
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const char *progname, bool echo, bool quiet);
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static
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void cluster_all_databases(const char *host, const char *port, const char *username, bool password,
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const char *progname, bool echo, bool quiet);
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static void help(const char *progname);
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int
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main(int argc, char *argv[])
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{
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static struct option long_options[] = {
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{"host", required_argument, NULL, 'h'},
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{"port", required_argument, NULL, 'p'},
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{"username", required_argument, NULL, 'U'},
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{"password", no_argument, NULL, 'W'},
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{"echo", no_argument, NULL, 'e'},
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{"quiet", no_argument, NULL, 'q'},
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{"dbname", required_argument, NULL, 'd'},
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{"all", no_argument, NULL, 'a'},
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{"table", required_argument, NULL, 't'},
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{NULL, 0, NULL, 0}
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};
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char *progname;
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int optindex;
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int c;
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const char *dbname = NULL;
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char *host = NULL;
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char *port = NULL;
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char *username = NULL;
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bool password = false;
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bool echo = false;
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bool quiet = false;
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bool alldb = false;
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char *table = NULL;
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progname = get_progname(argv[0]);
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init_nls();
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handle_help_version_opts(argc, argv, "clusterdb", help);
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while ((c = getopt_long(argc, argv, "h:p:U:Weqd:at:", long_options, &optindex)) != -1)
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{
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switch (c)
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{
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case 'h':
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host = optarg;
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break;
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case 'p':
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port = optarg;
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break;
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case 'U':
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username = optarg;
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break;
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case 'W':
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password = true;
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break;
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case 'e':
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echo = true;
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break;
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case 'q':
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quiet = true;
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break;
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case 'd':
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dbname = optarg;
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break;
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case 'a':
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alldb = true;
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break;
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case 't':
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table = optarg;
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break;
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default:
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fprintf(stderr, _("Try '%s --help' for more information.\n"), progname);
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exit(1);
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}
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}
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switch (argc - optind)
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{
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case 0:
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break;
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case 1:
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dbname = argv[optind];
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break;
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default:
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fprintf(stderr, _("%s: too many command-line arguments (first is '%s')\n"),
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progname, argv[optind + 1]);
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fprintf(stderr, _("Try '%s --help' for more information.\n"), progname);
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exit(1);
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}
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if (alldb)
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{
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if (dbname)
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{
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fprintf(stderr, _("%s: cannot cluster all databases and a specific one at the same time\n"),
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progname);
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exit(1);
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}
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if (table)
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{
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fprintf(stderr, _("%s: cannot cluster a specific table in all databases\n"),
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progname);
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exit(1);
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}
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cluster_all_databases(host, port, username, password,
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progname, echo, quiet);
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}
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else
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{
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if (dbname == NULL)
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{
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if (getenv("PGDATABASE"))
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dbname = getenv("PGDATABASE");
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else if (getenv("PGUSER"))
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dbname = getenv("PGUSER");
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else
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dbname = get_user_name(progname);
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}
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cluster_one_database(dbname, table,
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host, port, username, password,
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progname, echo, quiet);
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}
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exit(0);
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}
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static
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void cluster_one_database(const char *dbname, const char *table,
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const char *host, const char *port, const char *username, bool password,
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const char *progname, bool echo, bool quiet)
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{
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PQExpBufferData sql;
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PGconn *conn;
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PGresult *result;
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initPQExpBuffer(&sql);
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appendPQExpBuffer(&sql, "CLUSTER");
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if (table)
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appendPQExpBuffer(&sql, " %s", fmtId(table));
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appendPQExpBuffer(&sql, ";\n");
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conn = connectDatabase(dbname, host, port, username, password, progname);
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if (echo)
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printf("%s", sql.data);
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result = PQexec(conn, sql.data);
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if (PQresultStatus(result) != PGRES_COMMAND_OK)
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{
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if (table)
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fprintf(stderr, _("%s: clustering of table \"%s\" in database \"%s\" failed: %s"),
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progname, table, dbname, PQerrorMessage(conn));
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else
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fprintf(stderr, _("%s: clustering of database \"%s\" failed: %s"),
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progname, dbname, PQerrorMessage(conn));
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PQfinish(conn);
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exit(1);
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}
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PQclear(result);
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PQfinish(conn);
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termPQExpBuffer(&sql);
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if (!quiet)
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puts("CLUSTER");
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}
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static
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void cluster_all_databases(const char *host, const char *port, const char *username, bool password,
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const char *progname, bool echo, bool quiet)
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{
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PGconn *conn;
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PGresult *result;
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int i;
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conn = connectDatabase("template1", host, port, username, password, progname);
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result = executeQuery(conn, "SELECT datname FROM pg_database WHERE datallowconn;", progname, echo);
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PQfinish(conn);
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for (i = 0; i < PQntuples(result); i++)
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{
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char *dbname = PQgetvalue(result, i, 0);
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if (!quiet)
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fprintf(stderr, _("%s: clustering database \"%s\"\n"), progname, dbname);
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cluster_one_database(dbname, NULL,
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host, port, username, password,
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progname, echo, quiet);
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}
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PQclear(result);
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}
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static void
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help(const char *progname)
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{
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printf(_("%s clusters all previously clustered tables in a database.\n"), progname);
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printf(_("Usage:\n"));
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printf(_(" %s [OPTION]... [DBNAME]\n"), progname);
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printf(_("\nOptions:\n"));
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printf(_(" -a, --all cluster all databases\n"));
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printf(_(" -d, --dbname=DBNAME database to cluster\n"));
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printf(_(" -t, --table=TABLE cluster specific table only"));
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printf(_(" -e, --echo show the commands being sent to the server\n"));
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printf(_(" -q, --quiet don't write any messages\n"));
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printf(_(" --help show this help, then exit\n"));
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printf(_(" --version output version information, then exit\n"));
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printf(_("\nConnection options:\n"));
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printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
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printf(_(" -p, --port=PORT database server port\n"));
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printf(_(" -U, --username=USERNAME user name to connect as\n"));
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printf(_(" -W, --password prompt for password\n"));
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printf(_("\nRead the description of the SQL command CLUSTER for details.\n"));
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printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
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}
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