Adding upstream version 15.4.upstream/15.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 242 insertions, 0 deletions

diff --git a/src/bin/scripts/pg_isready.c b/src/bin/scripts/pg_isready.c
new file mode 100644
index 0000000..1aa8347
--- /dev/null
+++ b/src/bin/scripts/pg_isready.c
@@ -0,0 +1,242 @@
+/*-------------------------------------------------------------------------
+ *
+ * pg_isready --- checks the status of the PostgreSQL server
+ *
+ * Copyright (c) 2013-2022, PostgreSQL Global Development Group
+ *
+ * src/bin/scripts/pg_isready.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres_fe.h"
+#include "common.h"
+#include "common/logging.h"
+#include "fe_utils/option_utils.h"
+
+#define DEFAULT_CONNECT_TIMEOUT "3"
+
+static void
+			help(const char *progname);
+
+int
+main(int argc, char **argv)
+{
+	int			c;
+
+	const char *progname;
+
+	const char *pghost = NULL;
+	const char *pgport = NULL;
+	const char *pguser = NULL;
+	const char *pgdbname = NULL;
+	const char *connect_timeout = DEFAULT_CONNECT_TIMEOUT;
+
+	const char *pghost_str = NULL;
+	const char *pghostaddr_str = NULL;
+	const char *pgport_str = NULL;
+
+#define PARAMS_ARRAY_SIZE	7
+
+	const char *keywords[PARAMS_ARRAY_SIZE];
+	const char *values[PARAMS_ARRAY_SIZE];
+
+	bool		quiet = false;
+
+	PGPing		rv;
+	PQconninfoOption *opts = NULL;
+	PQconninfoOption *defs = NULL;
+	PQconninfoOption *opt;
+	PQconninfoOption *def;
+	char	   *errmsg = NULL;
+
+	/*
+	 * We accept user and database as options to avoid useless errors from
+	 * connecting with invalid params
+	 */
+
+	static struct option long_options[] = {
+		{"dbname", required_argument, NULL, 'd'},
+		{"host", required_argument, NULL, 'h'},
+		{"port", required_argument, NULL, 'p'},
+		{"quiet", no_argument, NULL, 'q'},
+		{"timeout", required_argument, NULL, 't'},
+		{"username", required_argument, NULL, 'U'},
+		{NULL, 0, NULL, 0}
+	};
+
+	pg_logging_init(argv[0]);
+	progname = get_progname(argv[0]);
+	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));
+	handle_help_version_opts(argc, argv, progname, help);
+
+	while ((c = getopt_long(argc, argv, "d:h:p:qt:U:", long_options, NULL)) != -1)
+	{
+		switch (c)
+		{
+			case 'd':
+				pgdbname = pg_strdup(optarg);
+				break;
+			case 'h':
+				pghost = pg_strdup(optarg);
+				break;
+			case 'p':
+				pgport = pg_strdup(optarg);
+				break;
+			case 'q':
+				quiet = true;
+				break;
+			case 't':
+				connect_timeout = pg_strdup(optarg);
+				break;
+			case 'U':
+				pguser = pg_strdup(optarg);
+				break;
+			default:
+				/* getopt_long already emitted a complaint */
+				pg_log_error_hint("Try \"%s --help\" for more information.", progname);
+
+				/*
+				 * We need to make sure we don't return 1 here because someone
+				 * checking the return code might infer unintended meaning
+				 */
+				exit(PQPING_NO_ATTEMPT);
+		}
+	}
+
+	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);
+
+		/*
+		 * We need to make sure we don't return 1 here because someone
+		 * checking the return code might infer unintended meaning
+		 */
+		exit(PQPING_NO_ATTEMPT);
+	}
+
+	keywords[0] = "host";
+	values[0] = pghost;
+	keywords[1] = "port";
+	values[1] = pgport;
+	keywords[2] = "user";
+	values[2] = pguser;
+	keywords[3] = "dbname";
+	values[3] = pgdbname;
+	keywords[4] = "connect_timeout";
+	values[4] = connect_timeout;
+	keywords[5] = "fallback_application_name";
+	values[5] = progname;
+	keywords[6] = NULL;
+	values[6] = NULL;
+
+	/*
+	 * Get the host and port so we can display them in our output
+	 */
+	if (pgdbname &&
+		(strncmp(pgdbname, "postgresql://", 13) == 0 ||
+		 strncmp(pgdbname, "postgres://", 11) == 0 ||
+		 strchr(pgdbname, '=') != NULL))
+	{
+		opts = PQconninfoParse(pgdbname, &errmsg);
+		if (opts == NULL)
+		{
+			pg_log_error("%s", errmsg);
+			exit(PQPING_NO_ATTEMPT);
+		}
+	}
+
+	defs = PQconndefaults();
+	if (defs == NULL)
+	{
+		pg_log_error("could not fetch default options");
+		exit(PQPING_NO_ATTEMPT);
+	}
+
+	for (opt = opts, def = defs; def->keyword; def++)
+	{
+		if (strcmp(def->keyword, "host") == 0)
+		{
+			if (opt && opt->val)
+				pghost_str = opt->val;
+			else if (pghost)
+				pghost_str = pghost;
+			else if (def->val)
+				pghost_str = def->val;
+			else
+				pghost_str = DEFAULT_PGSOCKET_DIR;
+		}
+		else if (strcmp(def->keyword, "hostaddr") == 0)
+		{
+			if (opt && opt->val)
+				pghostaddr_str = opt->val;
+			else if (def->val)
+				pghostaddr_str = def->val;
+		}
+		else if (strcmp(def->keyword, "port") == 0)
+		{
+			if (opt && opt->val)
+				pgport_str = opt->val;
+			else if (pgport)
+				pgport_str = pgport;
+			else if (def->val)
+				pgport_str = def->val;
+		}
+
+		if (opt)
+			opt++;
+	}
+
+	rv = PQpingParams(keywords, values, 1);
+
+	if (!quiet)
+	{
+		printf("%s:%s - ",
+			   pghostaddr_str != NULL ? pghostaddr_str : pghost_str,
+			   pgport_str);
+
+		switch (rv)
+		{
+			case PQPING_OK:
+				printf(_("accepting connections\n"));
+				break;
+			case PQPING_REJECT:
+				printf(_("rejecting connections\n"));
+				break;
+			case PQPING_NO_RESPONSE:
+				printf(_("no response\n"));
+				break;
+			case PQPING_NO_ATTEMPT:
+				printf(_("no attempt\n"));
+				break;
+			default:
+				printf(_("unknown\n"));
+		}
+	}
+
+	exit(rv);
+}
+
+static void
+help(const char *progname)
+{
+	printf(_("%s issues a connection check to a PostgreSQL database.\n\n"), progname);
+	printf(_("Usage:\n"));
+	printf(_("  %s [OPTION]...\n"), progname);
+
+	printf(_("\nOptions:\n"));
+	printf(_("  -d, --dbname=DBNAME      database name\n"));
+	printf(_("  -q, --quiet              run quietly\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(_("  -t, --timeout=SECS       seconds to wait when attempting connection, 0 disables (default: %s)\n"), DEFAULT_CONNECT_TIMEOUT);
+	printf(_("  -U, --username=USERNAME  user name to connect as\n"));
+	printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+	printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
+}