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-rw-r--r--src/bin/scripts/clusterdb.c286
1 files changed, 286 insertions, 0 deletions
diff --git a/src/bin/scripts/clusterdb.c b/src/bin/scripts/clusterdb.c
new file mode 100644
index 0000000..bc5a109
--- /dev/null
+++ b/src/bin/scripts/clusterdb.c
@@ -0,0 +1,286 @@
+/*-------------------------------------------------------------------------
+ *
+ * clusterdb
+ *
+ * Portions Copyright (c) 2002-2022, 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/option_utils.h"
+#include "fe_utils/query_utils.h"
+#include "fe_utils/simple_list.h"
+#include "fe_utils/string_utils.h"
+
+
+static void cluster_one_database(const ConnParams *cparams, const char *table,
+ const char *progname, bool verbose, bool echo);
+static void cluster_all_databases(ConnParams *cparams, const char *progname,
+ bool verbose, 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;
+ ConnParams cparams;
+ 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:
+ /* getopt_long already emitted a complaint */
+ pg_log_error_hint("Try \"%s --help\" for more information.", 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]);
+ pg_log_error_hint("Try \"%s --help\" for more information.", progname);
+ exit(1);
+ }
+
+ /* fill cparams except for dbname, which is set below */
+ cparams.pghost = host;
+ cparams.pgport = port;
+ cparams.pguser = username;
+ cparams.prompt_password = prompt_password;
+ cparams.override_dbname = NULL;
+
+ setup_cancel_handler(NULL);
+
+ if (alldb)
+ {
+ if (dbname)
+ pg_fatal("cannot cluster all databases and a specific one at the same time");
+
+ if (tables.head != NULL)
+ pg_fatal("cannot cluster specific table(s) in all databases");
+
+ cparams.dbname = maintenance_db;
+
+ cluster_all_databases(&cparams, progname, verbose, 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);
+ }
+
+ cparams.dbname = dbname;
+
+ if (tables.head != NULL)
+ {
+ SimpleStringListCell *cell;
+
+ for (cell = tables.head; cell; cell = cell->next)
+ {
+ cluster_one_database(&cparams, cell->val,
+ progname, verbose, echo);
+ }
+ }
+ else
+ cluster_one_database(&cparams, NULL,
+ progname, verbose, echo);
+ }
+
+ exit(0);
+}
+
+
+static void
+cluster_one_database(const ConnParams *cparams, const char *table,
+ const char *progname, bool verbose, bool echo)
+{
+ PQExpBufferData sql;
+
+ PGconn *conn;
+
+ conn = connectDatabase(cparams, 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(ConnParams *cparams, const char *progname,
+ bool verbose, bool echo, bool quiet)
+{
+ PGconn *conn;
+ PGresult *result;
+ int i;
+
+ conn = connectMaintenanceDatabase(cparams, progname, echo);
+ result = executeQuery(conn,
+ "SELECT datname FROM pg_database WHERE datallowconn AND datconnlimit <> -2 ORDER BY 1;",
+ 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);
+ }
+
+ cparams->override_dbname = dbname;
+
+ cluster_one_database(cparams, NULL, progname, verbose, 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(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);
+}
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