Add -L/--log-level command line option to repmgr

Overrides any setting in the config file. This will replace the
-v/--verbose option.

log.c

@@ -39,7 +39,6 @@
 
 /* #define REPMGR_DEBUG */
 
-static int	detect_log_level(const char *level);
 static int	detect_log_facility(const char *facility);
 
 int			log_type = REPMGR_STDERR;
@@ -217,7 +216,7 @@ logger_min_verbose(int minimum)
 		log_level = minimum;
 }
 
-static int
+int
 detect_log_level(const char *level)
 {
 	if (!strcmp(level, "DEBUG"))
@@ -247,7 +246,6 @@ detect_log_facility(const char *facility)
 
 	if (!strncmp(facility, "LOCAL", 5) && strlen(facility) == 6)
 	{
-
 		local = atoi(&facility[5]);
 
 		switch (local)

log.h

@@ -112,12 +112,15 @@ __attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
 #endif
 
 
+int			detect_log_level(const char *level);
+
 /* Logger initialisation and shutdown */
-bool		logger_shutdown(void);
 
 bool		logger_init(t_configuration_options * opts, const char *ident,
 			const char *level, const char *facility);
 
+bool		logger_shutdown(void);
+
 void		logger_min_verbose(int minimum);
 void		log_hint(const char *fmt, ...);
 

repmgr.c

@@ -151,6 +151,7 @@ main(int argc, char **argv)
 		{"pg_bindir", required_argument, NULL, 'b'},
 		{"rsync-only", no_argument, NULL, 'r'},
 		{"fast-checkpoint", no_argument, NULL, 'c'},
+		{"log-level", required_argument, NULL, 'L'},
 		{"initdb-no-pwprompt", no_argument, NULL, 1},
 		{"check-upstream-config", no_argument, NULL, 2},
 		{"recovery-min-apply-delay", required_argument, NULL, 3},
@@ -174,7 +175,7 @@ main(int argc, char **argv)
 	/* Prevent getopt_long() from printing an error message */
 	opterr = 0;
 
-	while ((c = getopt_long(argc, argv, "?Vd:h:p:U:S:D:l:f:R:w:k:FWIvb:r:c", long_options,
+	while ((c = getopt_long(argc, argv, "?Vd:h:p:U:S:D:l:f:R:w:k:FWIvb:r:c:L:", long_options,
 							&optindex)) != -1)
 	{
 		/*
@@ -256,6 +257,22 @@ main(int argc, char **argv)
 			case 'c':
 				runtime_options.fast_checkpoint = true;
 				break;
+			case 'L':
+			{
+				int detected_log_level = detect_log_level(optarg);
+				if (detected_log_level != -1)
+				{
+					strncpy(runtime_options.loglevel, optarg, MAXLEN);
+				}
+				else
+				{
+					PQExpBufferData invalid_log_level;
+					initPQExpBuffer(&invalid_log_level);
+					appendPQExpBuffer(&invalid_log_level, _("Invalid log level \"%s\" provided"), optarg);
+					error_list_append(&cli_errors, invalid_log_level.data);
+				}
+				break;
+			}
 			case 1:
 				runtime_options.initdb_no_pwprompt = true;
 				break;
@@ -496,6 +513,12 @@ main(int argc, char **argv)
 	 * logging to troubleshoot problems.
 	 */
 
+	/* Command-line parameter -L/--log-level overrides any setting in config file*/
+	if(*runtime_options.loglevel != '\0')
+	{
+		strncpy(options.loglevel, runtime_options.loglevel, MAXLEN);
+	}
+
 	logger_init(&options, progname(), options.loglevel, options.logfacility);
 	if (runtime_options.verbose)
 		logger_min_verbose(LOG_INFO);
@@ -2524,6 +2547,7 @@ help(void)
 	printf(_("  -R, --remote-user=USERNAME          database server username for rsync\n"));
 	printf(_("  -F, --force                         force potentially dangerous operations to happen\n"));
 	printf(_("  --check-upstream-config             verify upstream server configuration\n"));
+	printf(_("  -L, --log-level                     set log level (overrides configuration file)\n"));
 	printf(_("\n"));
 	printf(_("Command-specific configuration options:\n"));
 	printf(_("  -c, --fast-checkpoint               (standby clone) force fast checkpoint\n"));

repmgr.h

@@ -82,6 +82,7 @@ typedef struct
 	bool		ignore_external_config_files;
 	char		masterport[MAXLEN];
 	char		localport[MAXLEN];
+	char		loglevel[MAXLEN];
 
 	/* parameter used by CLUSTER CLEANUP */
 	int			keep_history;
@@ -91,7 +92,7 @@ typedef struct
 	char		recovery_min_apply_delay[MAXLEN];
 }	t_runtime_options;
 
-#define T_RUNTIME_OPTIONS_INITIALIZER { "", "", "", "", "", "", "", DEFAULT_WAL_KEEP_SEGMENTS, false, false, false, false, false, false, false, false, "", "", 0, "", "" }
+#define T_RUNTIME_OPTIONS_INITIALIZER { "", "", "", "", "", "", "", DEFAULT_WAL_KEEP_SEGMENTS, false, false, false, false, false, false, false, false, "", "", "", 0, "", "" }
 
 extern char		repmgr_schema[MAXLEN];