297 lines
7.6 KiB
C
297 lines
7.6 KiB
C
/*-------------------------------------------------------------------------
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*
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* clusterdb
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*
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* Portions Copyright (c) 2002-2024, PostgreSQL Global Development Group
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*
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* src/bin/scripts/clusterdb.c
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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 "common/logging.h"
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#include "fe_utils/cancel.h"
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#include "fe_utils/option_utils.h"
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#include "fe_utils/query_utils.h"
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#include "fe_utils/simple_list.h"
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#include "fe_utils/string_utils.h"
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static void cluster_one_database(const ConnParams *cparams, const char *table,
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const char *progname, bool verbose, bool echo);
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static void cluster_all_databases(ConnParams *cparams, SimpleStringList *tables,
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const char *progname, bool verbose, bool echo,
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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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{"no-password", no_argument, NULL, 'w'},
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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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{"verbose", no_argument, NULL, 'v'},
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{"maintenance-db", required_argument, NULL, 2},
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{NULL, 0, NULL, 0}
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};
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const 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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const char *maintenance_db = 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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enum trivalue prompt_password = TRI_DEFAULT;
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ConnParams cparams;
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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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bool verbose = false;
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SimpleStringList tables = {NULL, NULL};
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pg_logging_init(argv[0]);
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progname = get_progname(argv[0]);
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set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));
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handle_help_version_opts(argc, argv, "clusterdb", help);
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while ((c = getopt_long(argc, argv, "ad:eh:p:qt:U:vwW", long_options, &optindex)) != -1)
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{
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switch (c)
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{
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case 'a':
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alldb = true;
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break;
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case 'd':
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dbname = pg_strdup(optarg);
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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 'h':
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host = pg_strdup(optarg);
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break;
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case 'p':
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port = pg_strdup(optarg);
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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 't':
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simple_string_list_append(&tables, optarg);
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break;
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case 'U':
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username = pg_strdup(optarg);
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break;
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case 'v':
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verbose = true;
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break;
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case 'w':
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prompt_password = TRI_NO;
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break;
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case 'W':
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prompt_password = TRI_YES;
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break;
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case 2:
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maintenance_db = pg_strdup(optarg);
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break;
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default:
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/* getopt_long already emitted a complaint */
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pg_log_error_hint("Try \"%s --help\" for more information.", progname);
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exit(1);
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}
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}
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/*
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* Non-option argument specifies database name as long as it wasn't
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* already specified with -d / --dbname
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*/
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if (optind < argc && dbname == NULL)
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{
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dbname = argv[optind];
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optind++;
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}
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if (optind < argc)
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{
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pg_log_error("too many command-line arguments (first is \"%s\")",
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argv[optind]);
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pg_log_error_hint("Try \"%s --help\" for more information.", progname);
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exit(1);
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}
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/* fill cparams except for dbname, which is set below */
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cparams.pghost = host;
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cparams.pgport = port;
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cparams.pguser = username;
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cparams.prompt_password = prompt_password;
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cparams.override_dbname = NULL;
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setup_cancel_handler(NULL);
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if (alldb)
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{
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if (dbname)
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pg_fatal("cannot cluster all databases and a specific one at the same time");
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cparams.dbname = maintenance_db;
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cluster_all_databases(&cparams, &tables,
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progname, verbose, 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_or_exit(progname);
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}
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cparams.dbname = dbname;
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if (tables.head != NULL)
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{
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SimpleStringListCell *cell;
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for (cell = tables.head; cell; cell = cell->next)
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{
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cluster_one_database(&cparams, cell->val,
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progname, verbose, echo);
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}
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}
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else
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cluster_one_database(&cparams, NULL,
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progname, verbose, echo);
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}
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exit(0);
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}
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static void
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cluster_one_database(const ConnParams *cparams, const char *table,
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const char *progname, bool verbose, bool echo)
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{
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PQExpBufferData sql;
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PGconn *conn;
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conn = connectDatabase(cparams, progname, echo, false, true);
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initPQExpBuffer(&sql);
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appendPQExpBufferStr(&sql, "CLUSTER");
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if (verbose)
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appendPQExpBufferStr(&sql, " VERBOSE");
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if (table)
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{
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appendPQExpBufferChar(&sql, ' ');
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appendQualifiedRelation(&sql, table, conn, echo);
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}
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appendPQExpBufferChar(&sql, ';');
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if (!executeMaintenanceCommand(conn, sql.data, echo))
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{
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if (table)
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pg_log_error("clustering of table \"%s\" in database \"%s\" failed: %s",
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table, PQdb(conn), PQerrorMessage(conn));
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else
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pg_log_error("clustering of database \"%s\" failed: %s",
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PQdb(conn), PQerrorMessage(conn));
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PQfinish(conn);
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exit(1);
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}
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PQfinish(conn);
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termPQExpBuffer(&sql);
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}
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static void
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cluster_all_databases(ConnParams *cparams, SimpleStringList *tables,
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const char *progname, bool verbose, bool echo,
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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 = connectMaintenanceDatabase(cparams, progname, echo);
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result = executeQuery(conn,
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"SELECT datname FROM pg_database WHERE datallowconn AND datconnlimit <> -2 ORDER BY 1;",
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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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{
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printf(_("%s: clustering database \"%s\"\n"), progname, dbname);
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fflush(stdout);
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}
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cparams->override_dbname = dbname;
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if (tables->head != NULL)
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{
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SimpleStringListCell *cell;
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for (cell = tables->head; cell; cell = cell->next)
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cluster_one_database(cparams, cell->val,
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progname, verbose, echo);
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}
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else
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cluster_one_database(cparams, NULL,
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progname, verbose, echo);
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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\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(_(" -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(_(" -t, --table=TABLE cluster specific table(s) only\n"));
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printf(_(" -v, --verbose write a lot of output\n"));
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printf(_(" -V, --version output version information, then exit\n"));
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printf(_(" -?, --help show this help, 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, --no-password never prompt for password\n"));
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printf(_(" -W, --password force password prompt\n"));
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printf(_(" --maintenance-db=DBNAME alternate maintenance database\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 <%s>.\n"), PACKAGE_BUGREPORT);
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printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
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}
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