mirror of
https://github.com/EnterpriseDB/repmgr.git
synced 2026-03-22 22:56:29 +00:00
Initial config file structure definition and initialisation
This commit is contained in:
Ian Barwick
200
config.c
200
config.c
@@ -8,8 +8,13 @@
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#include "repmgr.h"
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#include "config.h"
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#include "log.h"
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const static char *_progname = NULL;
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static char config_file_path[MAXPGPATH];
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static bool config_file_provided = false;
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bool config_file_found = false;
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static void _parse_config(t_configuration_options *options, ItemList *error_list);
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static void exit_with_errors(ItemList *config_errors);
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@@ -29,7 +34,123 @@ progname(void)
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bool
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load_config(const char *config_file, bool verbose, t_configuration_options *options, char *argv0)
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{
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return true;
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struct stat stat_config;
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/*
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* If a configuration file was provided, check it exists, otherwise
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* emit an error and terminate. We assume that if a user explicitly
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* provides a configuration file, they'll want to make sure it's
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* used and not fall back to any of the defaults.
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*/
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if (config_file[0])
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{
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strncpy(config_file_path, config_file, MAXPGPATH);
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canonicalize_path(config_file_path);
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if (stat(config_file_path, &stat_config) != 0)
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{
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log_error(_("provided configuration file \"%s\" not found: %s"),
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config_file,
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strerror(errno)
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);
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exit(ERR_BAD_CONFIG);
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}
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if (verbose == true)
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{
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log_notice(_("using configuration file \"%s\""), config_file);
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}
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config_file_provided = true;
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config_file_found = true;
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}
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/*
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* If no configuration file was provided, attempt to find a default file
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* in this order:
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* - current directory
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* - /etc/repmgr.conf
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* - default sysconfdir
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*
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* here we just check for the existence of the file; parse_config()
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* will handle read errors etc.
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*
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* XXX modify this section so package maintainers can provide a patch
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* specifying location of a distribution-specific configuration file
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*/
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if (config_file_provided == false)
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{
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char my_exec_path[MAXPGPATH];
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char sysconf_etc_path[MAXPGPATH];
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/* 1. "./repmgr.conf" */
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if (verbose == true)
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{
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log_notice(_("looking for configuration file in current directory"));
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}
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snprintf(config_file_path, MAXPGPATH, "./%s", CONFIG_FILE_NAME);
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canonicalize_path(config_file_path);
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if (stat(config_file_path, &stat_config) == 0)
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{
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config_file_found = true;
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goto end_search;
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}
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/* 2. "/etc/repmgr.conf" */
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if (verbose == true)
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{
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log_notice(_("looking for configuration file in /etc"));
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}
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snprintf(config_file_path, MAXPGPATH, "/etc/%s", CONFIG_FILE_NAME);
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if (stat(config_file_path, &stat_config) == 0)
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{
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config_file_found = true;
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goto end_search;
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}
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/* 3. default sysconfdir */
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if (find_my_exec(argv0, my_exec_path) < 0)
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{
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log_error(_("%s: could not find own program executable"), argv0);
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exit(EXIT_FAILURE);
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}
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get_etc_path(my_exec_path, sysconf_etc_path);
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if (verbose == true)
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{
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log_notice(_("looking for configuration file in %s"), sysconf_etc_path);
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}
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snprintf(config_file_path, MAXPGPATH, "%s/%s", sysconf_etc_path, CONFIG_FILE_NAME);
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if (stat(config_file_path, &stat_config) == 0)
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{
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config_file_found = true;
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goto end_search;
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}
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end_search:
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if (config_file_found == true)
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{
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if (verbose == true)
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{
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log_notice(_("configuration file found at: %s"), config_file_path);
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}
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}
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else
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{
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if (verbose == true)
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{
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log_notice(_("no configuration file provided or found"));
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}
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}
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}
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return parse_config(options);
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}
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bool
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@@ -51,7 +172,84 @@ parse_config(t_configuration_options *options)
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static void
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_parse_config(t_configuration_options *options, ItemList *error_list)
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{
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FILE *fp;
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char *s,
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buf[MAXLINELENGTH];
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char name[MAXLEN];
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char value[MAXLEN];
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/* For sanity-checking provided conninfo string */
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PQconninfoOption *conninfo_options;
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char *conninfo_errmsg = NULL;
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bool node_id_found = false;
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/* Initialize configuration options with sensible defaults */
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/* node information */
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options->node_id = UNKNOWN_NODE_ID;
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options->upstream_node_id = NO_UPSTREAM_NODE;
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memset(options->node_name, 0, sizeof(options->node_name));
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memset(options->conninfo, 0, sizeof(options->conninfo));
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memset(options->pg_bindir, 0, sizeof(options->pg_bindir));
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/*
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* log settings
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*
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* note: the default for "loglevel" is set in log.c and does not need
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* to be initialised here
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*/
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memset(options->logfacility, 0, sizeof(options->logfacility));
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memset(options->logfile, 0, sizeof(options->logfile));
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/* standby clone settings
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* ----------------------- */
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options->use_replication_slots = false;
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memset(options->rsync_options, 0, sizeof(options->rsync_options));
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memset(options->ssh_options, 0, sizeof(options->ssh_options));
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memset(options->pg_basebackup_options, 0, sizeof(options->pg_basebackup_options));
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memset(options->restore_command, 0, sizeof(options->restore_command));
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options->tablespace_mapping.head = NULL;
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options->tablespace_mapping.tail = NULL;
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/* repmgrd settings
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* ---------------- */
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options->failover_mode = MANUAL_FAILOVER;
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options->priority = DEFAULT_PRIORITY;
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memset(options->promote_command, 0, sizeof(options->promote_command));
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memset(options->follow_command, 0, sizeof(options->follow_command));
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options->monitor_interval_secs = 2;
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options->master_response_timeout = 60;
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/* default to 6 reconnection attempts at intervals of 10 seconds */
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options->reconnect_attempts = 6;
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options->reconnect_interval = 10;
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options->retry_promote_interval_secs = 300;
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options->monitoring_history = false; /* new in 4.0, replaces --monitoring-history */
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/* witness settings
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* ---------------- */
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/* default to resyncing repl_nodes table every 30 seconds on the witness server */
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options->witness_repl_nodes_sync_interval_secs = 30;
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/* service settings
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* ---------------- */
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memset(options->pg_ctl_options, 0, sizeof(options->pg_ctl_options));
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memset(options->service_stop_command, 0, sizeof(options->service_stop_command));
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memset(options->service_start_command, 0, sizeof(options->service_start_command));
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memset(options->service_restart_command, 0, sizeof(options->service_restart_command));
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memset(options->service_reload_command, 0, sizeof(options->service_reload_command));
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memset(options->service_promote_command, 0, sizeof(options->service_promote_command));
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/* event notification settings
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* --------------------------- */
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memset(options->event_notification_command, 0, sizeof(options->event_notification_command));
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options->event_notifications.head = NULL;
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options->event_notifications.tail = NULL;
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/* barman settings */
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memset(options->barman_server, 0, sizeof(options->barman_server));
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memset(options->barman_config, 0, sizeof(options->barman_config));
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}
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124
config.h
124
config.h
@@ -8,26 +8,23 @@
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#ifndef _REPMGR_CONFIG_H_
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#define _REPMGR_CONFIG_H_
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typedef struct
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#define CONFIG_FILE_NAME "repmgr.conf"
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#define MAXLINELENGTH 4096
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extern bool config_file_found;
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typedef struct EventNotificationListCell
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{
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int node_id;
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char node_name[MAXLEN];
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char loglevel[MAXLEN];
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char logfacility[MAXLEN];
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char logfile[MAXLEN];
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struct EventNotificationListCell *next;
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char event_type[MAXLEN];
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} EventNotificationListCell;
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} t_configuration_options;
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typedef struct EventNotificationList
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{
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EventNotificationListCell *head;
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EventNotificationListCell *tail;
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} EventNotificationList;
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/*
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* The following will initialize the structure with a minimal set of options;
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* actual defaults are set in parse_config() before parsing the configuration file
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*/
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#define T_CONFIGURATION_OPTIONS_INITIALIZER { \
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/* node settings */ \
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UNKNOWN_NODE_ID, "", \
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/* log settings */ \
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"", "", ""}
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typedef struct ItemListCell
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{
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@@ -42,6 +39,99 @@ typedef struct ItemList
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} ItemList;
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typedef struct TablespaceListCell
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{
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struct TablespaceListCell *next;
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char old_dir[MAXPGPATH];
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char new_dir[MAXPGPATH];
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} TablespaceListCell;
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typedef struct TablespaceList
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{
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TablespaceListCell *head;
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TablespaceListCell *tail;
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} TablespaceList;
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typedef struct
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{
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/* node information */
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int node_id;
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int upstream_node_id;
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char node_name[MAXLEN];
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char conninfo[MAXLEN];
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char pg_bindir[MAXLEN];
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/* log settings */
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char loglevel[MAXLEN];
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char logfacility[MAXLEN];
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char logfile[MAXLEN];
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/* standby clone settings */
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bool use_replication_slots;
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char rsync_options[MAXLEN];
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char ssh_options[MAXLEN];
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char pg_basebackup_options[MAXLEN];
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char restore_command[MAXLEN];
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TablespaceList tablespace_mapping;
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/* repmgrd settings */
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int failover_mode;
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int priority;
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char promote_command[MAXLEN];
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char follow_command[MAXLEN];
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int monitor_interval_secs;
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int master_response_timeout;
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int reconnect_attempts;
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int reconnect_interval;
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int retry_promote_interval_secs;
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bool monitoring_history;
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/* witness settings */
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int witness_repl_nodes_sync_interval_secs;
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/* service settings */
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char pg_ctl_options[MAXLEN];
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char service_stop_command[MAXLEN];
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char service_start_command[MAXLEN];
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char service_restart_command[MAXLEN];
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char service_reload_command[MAXLEN];
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char service_promote_command[MAXLEN];
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/* event notification settings */
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char event_notification_command[MAXLEN];
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EventNotificationList event_notifications;
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/* barman settings */
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char barman_server[MAXLEN];
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char barman_config[MAXLEN];
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} t_configuration_options;
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/*
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* The following will initialize the structure with a minimal set of options;
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* actual defaults are set in parse_config() before parsing the configuration file
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*/
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#define T_CONFIGURATION_OPTIONS_INITIALIZER { \
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/* node information */ \
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UNKNOWN_NODE_ID, NO_UPSTREAM_NODE, "", "", "", \
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/* log settings */ \
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"", "", "", \
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/* standby clone settings */ \
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false, "", "", "", { NULL, NULL }, \
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/* repmgrd settings */ \
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MANUAL_FAILOVER, DEFAULT_PRIORITY, "", "", 2, 60, 6, 10, 300, false \
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/* witness settings */ \
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30, \
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/* service settings */ \
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"", "", "", "", "", "", \
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/* event notification settings */ \
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"", { NULL, NULL }, \
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/* barman settings */ \
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"", "" }
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void set_progname(const char *argv0);
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const char *progname(void);
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