+ status specifies the result of the connection check.
+ Specifies the name of the database to connect to.
+ socket.
+ compile time, usually 5432.
+ Do not display status message. This is useful when scripting.
--- /dev/null
+/*-------------------------------------------------------------------------
+ *
+ * pg_isready --- checks the status of the PostgreSQL server
+ *
+ * Copyright (c) 2013, PostgreSQL Global Development Group
+ *
+ * src/bin/scripts/pg_isready.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres_fe.h"
+#include "common.h"
+
+static void
+help(const char *progname);
+
+int
+main(int argc, char **argv)
+{
+ int c,optindex,opt_index = 0;
+
+ const char *progname;
+
+ const char *pghost = NULL;
+ const char *pgport = NULL;
+ const char *pguser = NULL;
+ const char *pgdbname = NULL;
+
+ const char *keywords[4], *values[4];
+
+ bool quiet = false;
+
+ PGPing rv;
+ PQconninfoOption *connect_options, *conn_opt_ptr;
+
+ /*
+ * 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'},
+ {"username", required_argument, NULL, 'U'},
+ {NULL, 0, NULL, 0}
+ };
+
+ progname = get_progname(argv[0]);
+ handle_help_version_opts(argc, argv, progname, help);
+
+ while ((c = getopt_long(argc, argv, "d:h:p:qU:V", long_options, &optindex)) != -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 'U':
+ pguser = pg_strdup(optarg);
+ break;
+ default:
+ /*
+ * 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)
+ {
+ fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
+ progname, argv[optind]);
+ fprintf(stderr, _("Try \"%s --help\" for more information.\n"), 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);
+ }
+
+ /*
+ * Get the default options so we can display them in our output
+ */
+
+ connect_options = PQconndefaults();
+ conn_opt_ptr = connect_options;
+
+ while (conn_opt_ptr->keyword)
+ {
+ if (strncmp(conn_opt_ptr->keyword, "host", 5) == 0)
+ {
+ if (pghost)
+ {
+ keywords[opt_index] = conn_opt_ptr->keyword;
+ values[opt_index] = pghost;
+ opt_index++;
+ }
+ else if (conn_opt_ptr->val)
+ pghost = conn_opt_ptr->val;
+ else
+ pghost = DEFAULT_PGSOCKET_DIR;
+ }
+ else if (strncmp(conn_opt_ptr->keyword, "port", 5) == 0)
+ {
+ if (pgport)
+ {
+ keywords[opt_index] = conn_opt_ptr->keyword;
+ values[opt_index] = pgport;
+ opt_index++;
+ }
+ else if (conn_opt_ptr->val)
+ pgport = conn_opt_ptr->val;
+ }
+ else if (strncmp(conn_opt_ptr->keyword, "user", 5) == 0)
+ {
+ if (pguser)
+ {
+ keywords[opt_index] = conn_opt_ptr->keyword;
+ values[opt_index] = pguser;
+ opt_index++;
+ }
+ else if (conn_opt_ptr->val)
+ pguser = conn_opt_ptr->val;
+ }
+ else if (strncmp(conn_opt_ptr->keyword, "dbname", 7) == 0)
+ {
+ if (pgdbname)
+ {
+ keywords[opt_index] = conn_opt_ptr->keyword;
+ values[opt_index] = pgdbname;
+ opt_index++;
+ }
+ else if (conn_opt_ptr->val)
+ pgdbname = conn_opt_ptr->val;
+ }
+ conn_opt_ptr++;
+ }
+
+ keywords[opt_index] = NULL;
+ values[opt_index] = NULL;
+
+ rv = PQpingParams(keywords, values, 1);
+
+ if (!quiet)
+ {
+ printf("%s:%s - ", pghost, pgport);
+
+ 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");
+ }
+ }
+
+ PQconninfoFree(connect_options);
+
+ 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(_(" -U, --username=USERNAME database username\n"));
+}
projects / postgresql.git / commitdiff