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configfile.c
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configfile.c
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/*
* config.c - parse repmgr.conf and other configuration-related functionality
*
* Copyright (c) 2ndQuadrant, 2010-2018
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/stat.h> /* for stat() */
#include "repmgr.h"
#include "configfile.h"
#include "log.h"
const static char *_progname = NULL;
char config_file_path[MAXPGPATH] = "";
static bool config_file_provided = false;
bool config_file_found = false;
static void parse_config(t_configuration_options *options, bool terse);
static void _parse_config(t_configuration_options *options, ItemList *error_list, ItemList *warning_list);
static void _parse_line(char *buf, char *name, char *value);
static void parse_event_notifications_list(t_configuration_options *options, const char *arg);
static void clear_event_notification_list(t_configuration_options *options);
static void parse_time_unit_parameter(const char *name, const char *value, char *dest, ItemList *errors);
static void tablespace_list_append(t_configuration_options *options, const char *arg);
static void exit_with_config_file_errors(ItemList *config_errors, ItemList *config_warnings, bool terse);
void
set_progname(const char *argv0)
{
_progname = get_progname(argv0);
}
const char *
progname(void)
{
return _progname;
}
void
load_config(const char *config_file, bool verbose, bool terse, t_configuration_options *options, char *argv0)
{
struct stat stat_config;
/*
* If a configuration file was provided, check it exists, otherwise emit
* an error and terminate. We assume that if a user explicitly provides a
* configuration file, they'll want to make sure it's used and not fall
* back to any of the defaults.
*/
if (config_file != NULL && config_file[0] != '\0')
{
strncpy(config_file_path, config_file, MAXPGPATH);
canonicalize_path(config_file_path);
/* relative path supplied - convert to absolute path */
if (config_file_path[0] != '/')
{
PQExpBufferData fullpath;
char *pwd = NULL;
initPQExpBuffer(&fullpath);
/*
* we'll attempt to use $PWD to derive the effective path; getcwd()
* will likely resolve symlinks, which may result in a path which
* isn't permanent (e.g. if filesystem mountpoints change).
*/
pwd = getenv("PWD");
if (pwd != NULL)
{
appendPQExpBufferStr(&fullpath, pwd);
}
else
{
/* $PWD not available - fall back to getcwd() */
char cwd[MAXPGPATH] = "";
if (getcwd(cwd, MAXPGPATH) == NULL)
{
log_error(_("unable to execute getcwd()"));
log_detail("%s", strerror(errno));
termPQExpBuffer(&fullpath);
exit(ERR_BAD_CONFIG);
}
appendPQExpBufferStr(&fullpath, cwd);
}
appendPQExpBuffer(&fullpath,
"/%s", config_file_path);
log_debug("relative configuration file converted to:\n \"%s\"",
fullpath.data);
strncpy(config_file_path, fullpath.data, MAXPGPATH);
termPQExpBuffer(&fullpath);
canonicalize_path(config_file_path);
}
if (stat(config_file_path, &stat_config) != 0)
{
log_error(_("provided configuration file \"%s\" not found: %s"),
config_file,
strerror(errno));
exit(ERR_BAD_CONFIG);
}
if (verbose == true)
{
log_notice(_("using provided configuration file \"%s\""), config_file);
}
config_file_provided = true;
config_file_found = true;
}
/*-----------
* If no configuration file was provided, attempt to find a default file
* in this order:
* - location provided by packager
* - current directory
* - /etc/repmgr.conf
* - default sysconfdir
*
* here we just check for the existence of the file; parse_config() will
* handle read errors etc.
*
*-----------
*/
if (config_file_provided == false)
{
/* packagers: if feasible, patch configuration file path into "package_conf_file" */
char package_conf_file[MAXPGPATH] = "";
char my_exec_path[MAXPGPATH] = "";
char sysconf_etc_path[MAXPGPATH] = "";
/* 1. location provided by packager */
if (package_conf_file[0] != '\0')
{
if (verbose == true)
fprintf(stdout, _("INFO: checking for package configuration file \"%s\"\n"), package_conf_file);
if (stat(package_conf_file, &stat_config) == 0)
{
strncpy(config_file_path, package_conf_file, MAXPGPATH);
config_file_found = true;
goto end_search;
}
}
/* 2 "./repmgr.conf" */
log_verbose(LOG_INFO, _("looking for configuration file in current directory\n"));
maxpath_snprintf(config_file_path, "./%s", CONFIG_FILE_NAME);
canonicalize_path(config_file_path);
if (stat(config_file_path, &stat_config) == 0)
{
config_file_found = true;
goto end_search;
}
/* 3. "/etc/repmgr.conf" */
if (verbose == true)
fprintf(stdout, _("INFO: looking for configuration file in /etc\n"));
maxpath_snprintf(config_file_path, "/etc/%s", CONFIG_FILE_NAME);
if (stat(config_file_path, &stat_config) == 0)
{
config_file_found = true;
goto end_search;
}
/* 4. default sysconfdir */
if (find_my_exec(argv0, my_exec_path) < 0)
{
fprintf(stderr, _("ERROR: %s: could not find own program executable\n"), argv0);
exit(EXIT_FAILURE);
}
get_etc_path(my_exec_path, sysconf_etc_path);
if (verbose == true)
fprintf(stdout, _("INFO: looking for configuration file in \"%s\"\n"), sysconf_etc_path);
maxpath_snprintf(config_file_path, "%s/%s", sysconf_etc_path, CONFIG_FILE_NAME);
if (stat(config_file_path, &stat_config) == 0)
{
config_file_found = true;
goto end_search;
}
end_search:
if (verbose == true)
{
if (config_file_found == true)
{
fprintf(stdout, _("INFO: configuration file found at: \"%s\"\n"), config_file_path);
}
else
{
fprintf(stdout, _("INFO: no configuration file provided or found\n"));
}
}
}
parse_config(options, terse);
return;
}
static void
parse_config(t_configuration_options *options, bool terse)
{
/* Collate configuration file errors here for friendlier reporting */
static ItemList config_errors = {NULL, NULL};
static ItemList config_warnings = {NULL, NULL};
_parse_config(options, &config_errors, &config_warnings);
/* errors found - exit after printing details, and any warnings */
if (config_errors.head != NULL)
{
exit_with_config_file_errors(&config_errors, &config_warnings, terse);
}
if (terse == false && config_warnings.head != NULL)
{
log_warning(_("the following problems were found in the configuration file:"));
print_item_list(&config_warnings);
}
return;
}
static void
_parse_config(t_configuration_options *options, ItemList *error_list, ItemList *warning_list)
{
FILE *fp;
char *s = NULL,
buf[MAXLINELENGTH] = "";
char name[MAXLEN] = "";
char value[MAXLEN] = "";
bool node_id_found = false;
/* Initialize configuration options with sensible defaults */
/*-----------------
* node information
*-----------------
*/
options->node_id = UNKNOWN_NODE_ID;
memset(options->node_name, 0, sizeof(options->node_name));
memset(options->conninfo, 0, sizeof(options->conninfo));
memset(options->data_directory, 0, sizeof(options->data_directory));
memset(options->config_directory, 0, sizeof(options->data_directory));
memset(options->pg_bindir, 0, sizeof(options->pg_bindir));
memset(options->repmgr_bindir, 0, sizeof(options->repmgr_bindir));
options->replication_type = REPLICATION_TYPE_PHYSICAL;
/*-------------
* log settings
*
* note: the default for "log_level" is set in log.c and does not need
* to be initialised here
*-------------
*/
memset(options->log_facility, 0, sizeof(options->log_facility));
memset(options->log_file, 0, sizeof(options->log_file));
options->log_status_interval = DEFAULT_LOG_STATUS_INTERVAL;
/*-----------------------
* standby clone settings
*------------------------
*/
options->use_replication_slots = false;
memset(options->replication_user, 0, sizeof(options->replication_user));
memset(options->pg_basebackup_options, 0, sizeof(options->pg_basebackup_options));
memset(options->restore_command, 0, sizeof(options->restore_command));
options->tablespace_mapping.head = NULL;
options->tablespace_mapping.tail = NULL;
memset(options->recovery_min_apply_delay, 0, sizeof(options->recovery_min_apply_delay));
options->recovery_min_apply_delay_provided = false;
memset(options->archive_cleanup_command, 0, sizeof(options->archive_cleanup_command));
options->use_primary_conninfo_password = false;
memset(options->passfile, 0, sizeof(options->passfile));
/*-------------------------
* standby promote settings
*-------------------------
*/
options->promote_check_timeout = DEFAULT_PROMOTE_CHECK_TIMEOUT;
options->promote_check_interval = DEFAULT_PROMOTE_CHECK_INTERVAL;
/*------------------------
* standby follow settings
*------------------------
*/
options->primary_follow_timeout = DEFAULT_PRIMARY_FOLLOW_TIMEOUT;
options->standby_follow_timeout = DEFAULT_STANDBY_FOLLOW_TIMEOUT;
/*------------------------
* standby switchover settings
*------------------------
*/
options->shutdown_check_timeout = DEFAULT_SHUTDOWN_CHECK_TIMEOUT;
options->standby_reconnect_timeout = DEFAULT_STANDBY_RECONNECT_TIMEOUT;
/*-----------------
* repmgrd settings
*-----------------
*/
options->failover = FAILOVER_MANUAL;
options->priority = DEFAULT_PRIORITY;
memset(options->location, 0, sizeof(options->location));
strncpy(options->location, DEFAULT_LOCATION, MAXLEN);
memset(options->promote_command, 0, sizeof(options->promote_command));
memset(options->follow_command, 0, sizeof(options->follow_command));
options->monitor_interval_secs = DEFAULT_MONITORING_INTERVAL;
/* default to 6 reconnection attempts at intervals of 10 seconds */
options->reconnect_attempts = DEFAULT_RECONNECTION_ATTEMPTS;
options->reconnect_interval = DEFAULT_RECONNECTION_INTERVAL;
options->monitoring_history = false; /* new in 4.0, replaces
* --monitoring-history */
options->degraded_monitoring_timeout = -1;
options->async_query_timeout = DEFAULT_ASYNC_QUERY_TIMEOUT;
options->primary_notification_timeout = DEFAULT_PRIMARY_NOTIFICATION_TIMEOUT;
options->repmgrd_standby_startup_timeout = -1; /* defaults to "standby_reconnect_timeout" if not set */
memset(options->repmgrd_pid_file, 0, sizeof(options->repmgrd_pid_file));
/*-------------
* witness settings
*-------------
*/
options->witness_sync_interval = DEFAULT_WITNESS_SYNC_INTERVAL;
/*-------------
* BDR settings
*-------------
*/
options->bdr_local_monitoring_only = false;
options->bdr_recovery_timeout = DEFAULT_BDR_RECOVERY_TIMEOUT;
/*-----------------
* service settings
*-----------------
*/
memset(options->pg_ctl_options, 0, sizeof(options->pg_ctl_options));
memset(options->service_stop_command, 0, sizeof(options->service_stop_command));
memset(options->service_start_command, 0, sizeof(options->service_start_command));
memset(options->service_restart_command, 0, sizeof(options->service_restart_command));
memset(options->service_reload_command, 0, sizeof(options->service_reload_command));
memset(options->service_promote_command, 0, sizeof(options->service_promote_command));
/*----------------------------
* event notification settings
*----------------------------
*/
memset(options->event_notification_command, 0, sizeof(options->event_notification_command));
options->event_notifications.head = NULL;
options->event_notifications.tail = NULL;
/*----------------
* barman settings
* ---------------
*/
memset(options->barman_host, 0, sizeof(options->barman_host));
memset(options->barman_server, 0, sizeof(options->barman_server));
memset(options->barman_config, 0, sizeof(options->barman_config));
/*-------------------
* rsync/ssh settings
* ------------------
*/
memset(options->rsync_options, 0, sizeof(options->rsync_options));
memset(options->ssh_options, 0, sizeof(options->ssh_options));
strncpy(options->ssh_options, "-q -o ConnectTimeout=10", sizeof(options->ssh_options));
/*---------------------------
* undocumented test settings
*---------------------------
*/
options->promote_delay = 0;
/*
* If no configuration file available (user didn't specify and none found
* in the default locations), return with default values
*/
if (config_file_found == false)
{
log_verbose(LOG_NOTICE,
_("no configuration file provided and no default file found - "
"continuing with default values"));
return;
}
fp = fopen(config_file_path, "r");
/*
* A configuration file has been found, either provided by the user or
* found in one of the default locations. If we can't open it, fail with
* an error.
*/
if (fp == NULL)
{
if (config_file_provided)
{
log_error(_("unable to open provided configuration file \"%s\"; terminating"),
config_file_path);
}
else
{
log_error(_("unable to open default configuration file \"%s\"; terminating"),
config_file_path);
}
exit(ERR_BAD_CONFIG);
}
/* Read file */
while ((s = fgets(buf, sizeof buf, fp)) != NULL)
{
bool known_parameter = true;
/* Parse name/value pair from line */
_parse_line(buf, name, value);
/* Skip blank lines */
if (!strlen(name))
continue;
/* Skip comments */
if (name[0] == '#')
continue;
/* Copy into correct entry in parameters struct */
if (strcmp(name, "node_id") == 0)
{
options->node_id = repmgr_atoi(value, name, error_list, 1);
node_id_found = true;
}
else if (strcmp(name, "node_name") == 0)
strncpy(options->node_name, value, MAXLEN);
else if (strcmp(name, "conninfo") == 0)
strncpy(options->conninfo, value, MAXLEN);
else if (strcmp(name, "data_directory") == 0)
strncpy(options->data_directory, value, MAXPGPATH);
else if (strcmp(name, "config_directory") == 0)
strncpy(options->config_directory, value, MAXPGPATH);
else if (strcmp(name, "replication_user") == 0)
{
if (strlen(value) < NAMEDATALEN)
strncpy(options->replication_user, value, NAMEDATALEN);
else
item_list_append(error_list,
_("value for \"replication_user\" must contain fewer than " STR(NAMEDATALEN) " characters"));
}
else if (strcmp(name, "pg_bindir") == 0)
strncpy(options->pg_bindir, value, MAXPGPATH);
else if (strcmp(name, "repmgr_bindir") == 0)
strncpy(options->repmgr_bindir, value, MAXPGPATH);
else if (strcmp(name, "replication_type") == 0)
{
if (strcmp(value, "physical") == 0)
options->replication_type = REPLICATION_TYPE_PHYSICAL;
else if (strcmp(value, "bdr") == 0)
options->replication_type = REPLICATION_TYPE_BDR;
else
item_list_append(error_list, _("value for \"replication_type\" must be \"physical\" or \"bdr\""));
}
/* log settings */
else if (strcmp(name, "log_file") == 0)
strncpy(options->log_file, value, MAXLEN);
else if (strcmp(name, "log_level") == 0)
strncpy(options->log_level, value, MAXLEN);
else if (strcmp(name, "log_facility") == 0)
strncpy(options->log_facility, value, MAXLEN);
else if (strcmp(name, "log_status_interval") == 0)
options->log_status_interval = repmgr_atoi(value, name, error_list, 0);
/* standby clone settings */
else if (strcmp(name, "use_replication_slots") == 0)
options->use_replication_slots = parse_bool(value, name, error_list);
else if (strcmp(name, "pg_basebackup_options") == 0)
strncpy(options->pg_basebackup_options, value, MAXLEN);
else if (strcmp(name, "tablespace_mapping") == 0)
tablespace_list_append(options, value);
else if (strcmp(name, "restore_command") == 0)
strncpy(options->restore_command, value, MAXLEN);
else if (strcmp(name, "recovery_min_apply_delay") == 0)
{
parse_time_unit_parameter(name, value, options->recovery_min_apply_delay, error_list);
options->recovery_min_apply_delay_provided = true;
}
else if (strcmp(name, "archive_cleanup_command") == 0)
strncpy(options->archive_cleanup_command, value, MAXLEN);
else if (strcmp(name, "use_primary_conninfo_password") == 0)
options->use_primary_conninfo_password = parse_bool(value, name, error_list);
else if (strcmp(name, "passfile") == 0)
strncpy(options->passfile, value, sizeof(options->passfile));
/* standby promote settings */
else if (strcmp(name, "promote_check_timeout") == 0)
options->promote_check_timeout = repmgr_atoi(value, name, error_list, 1);
else if (strcmp(name, "promote_check_interval") == 0)
options->promote_check_interval = repmgr_atoi(value, name, error_list, 1);
/* standby follow settings */
else if (strcmp(name, "primary_follow_timeout") == 0)
options->primary_follow_timeout = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "standby_follow_timeout") == 0)
options->standby_follow_timeout = repmgr_atoi(value, name, error_list, 0);
/* standby switchover settings */
else if (strcmp(name, "shutdown_check_timeout") == 0)
options->shutdown_check_timeout = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "standby_reconnect_timeout") == 0)
options->standby_reconnect_timeout = repmgr_atoi(value, name, error_list, 0);
/* node rejoin settings */
else if (strcmp(name, "node_rejoin_timeout") == 0)
options->node_rejoin_timeout = repmgr_atoi(value, name, error_list, 0);
/* node check settings */
else if (strcmp(name, "archive_ready_warning") == 0)
options->archive_ready_warning = repmgr_atoi(value, name, error_list, 1);
else if (strcmp(name, "archive_ready_critical") == 0)
options->archive_ready_critical = repmgr_atoi(value, name, error_list, 1);
else if (strcmp(name, "replication_lag_warning") == 0)
options->replication_lag_warning = repmgr_atoi(value, name, error_list, 1);
else if (strcmp(name, "replication_lag_critical") == 0)
options->replication_lag_critical = repmgr_atoi(value, name, error_list, 1);
/* repmgrd settings */
else if (strcmp(name, "failover") == 0)
{
if (strcmp(value, "manual") == 0)
{
options->failover = FAILOVER_MANUAL;
}
else if (strcmp(value, "automatic") == 0)
{
options->failover = FAILOVER_AUTOMATIC;
}
else
{
item_list_append(error_list,
_("value for \"failover\" must be \"automatic\" or \"manual\"\n"));
}
}
else if (strcmp(name, "priority") == 0)
options->priority = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "location") == 0)
strncpy(options->location, value, MAXLEN);
else if (strcmp(name, "promote_command") == 0)
strncpy(options->promote_command, value, MAXLEN);
else if (strcmp(name, "follow_command") == 0)
strncpy(options->follow_command, value, MAXLEN);
else if (strcmp(name, "reconnect_attempts") == 0)
options->reconnect_attempts = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "reconnect_interval") == 0)
options->reconnect_interval = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "monitor_interval_secs") == 0)
options->monitor_interval_secs = repmgr_atoi(value, name, error_list, 1);
else if (strcmp(name, "monitoring_history") == 0)
options->monitoring_history = parse_bool(value, name, error_list);
else if (strcmp(name, "degraded_monitoring_timeout") == 0)
options->degraded_monitoring_timeout = repmgr_atoi(value, name, error_list, -1);
else if (strcmp(name, "async_query_timeout") == 0)
options->async_query_timeout = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "primary_notification_timeout") == 0)
options->primary_notification_timeout = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "repmgrd_standby_startup_timeout") == 0)
options->repmgrd_standby_startup_timeout = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "repmgrd_pid_file") == 0)
strncpy(options->repmgrd_pid_file, value, MAXPGPATH);
/* witness settings */
else if (strcmp(name, "witness_sync_interval") == 0)
options->witness_sync_interval = repmgr_atoi(value, name, error_list, 1);
/* BDR settings */
else if (strcmp(name, "bdr_local_monitoring_only") == 0)
options->bdr_local_monitoring_only = parse_bool(value, name, error_list);
else if (strcmp(name, "bdr_recovery_timeout") == 0)
options->bdr_recovery_timeout = repmgr_atoi(value, name, error_list, 0);
/* service settings */
else if (strcmp(name, "pg_ctl_options") == 0)
strncpy(options->pg_ctl_options, value, MAXLEN);
else if (strcmp(name, "service_stop_command") == 0)
strncpy(options->service_stop_command, value, MAXLEN);
else if (strcmp(name, "service_start_command") == 0)
strncpy(options->service_start_command, value, MAXLEN);
else if (strcmp(name, "service_restart_command") == 0)
strncpy(options->service_restart_command, value, MAXLEN);
else if (strcmp(name, "service_reload_command") == 0)
strncpy(options->service_reload_command, value, MAXLEN);
else if (strcmp(name, "service_promote_command") == 0)
strncpy(options->service_promote_command, value, MAXLEN);
/* event notification settings */
else if (strcmp(name, "event_notification_command") == 0)
strncpy(options->event_notification_command, value, MAXLEN);
else if (strcmp(name, "event_notifications") == 0)
{
/* store unparsed value for comparison when reloading config */
strncpy(options->event_notifications_orig, value, MAXLEN);
parse_event_notifications_list(options, value);
}
/* barman settings */
else if (strcmp(name, "barman_host") == 0)
strncpy(options->barman_host, value, MAXLEN);
else if (strcmp(name, "barman_server") == 0)
strncpy(options->barman_server, value, MAXLEN);
else if (strcmp(name, "barman_config") == 0)
strncpy(options->barman_config, value, MAXLEN);
/* rsync/ssh settings */
else if (strcmp(name, "rsync_options") == 0)
strncpy(options->rsync_options, value, MAXLEN);
else if (strcmp(name, "ssh_options") == 0)
strncpy(options->ssh_options, value, MAXLEN);
/* undocumented settings for testing */
else if (strcmp(name, "promote_delay") == 0)
options->promote_delay = repmgr_atoi(value, name, error_list, 1);
/*
* Following parameters have been deprecated or renamed from 3.x -
* issue a warning
*/
else if (strcmp(name, "cluster") == 0)
{
item_list_append(warning_list,
_("parameter \"cluster\" is deprecated and will be ignored"));
known_parameter = false;
}
else if (strcmp(name, "node") == 0)
{
item_list_append(warning_list,
_("parameter \"node\" has been renamed to \"node_id\""));
known_parameter = false;
}
else if (strcmp(name, "upstream_node") == 0)
{
item_list_append(warning_list,
_("parameter \"upstream_node\" has been removed; use \"--upstream-node-id\" when cloning a standby"));
known_parameter = false;
}
else if (strcmp(name, "loglevel") == 0)
{
item_list_append(warning_list,
_("parameter \"loglevel\" has been renamed to \"log_level\""));
known_parameter = false;
}
else if (strcmp(name, "logfacility") == 0)
{
item_list_append(warning_list,
_("parameter \"logfacility\" has been renamed to \"log_facility\""));
known_parameter = false;
}
else if (strcmp(name, "logfile") == 0)
{
item_list_append(warning_list,
_("parameter \"logfile\" has been renamed to \"log_file\""));
known_parameter = false;
}
else if (strcmp(name, "master_reponse_timeout") == 0)
{
item_list_append(warning_list,
_("parameter \"master_reponse_timeout\" has been removed; use \"async_query_timeout\" instead"));
known_parameter = false;
}
else if (strcmp(name, "retry_promote_interval_secs") == 0)
{
item_list_append(warning_list,
_("parameter \"retry_promote_interval_secs\" has been removed; use \"primary_notification_timeout\" instead"));
known_parameter = false;
}
else
{
known_parameter = false;
log_warning(_("%s/%s: unknown name/value pair provided; ignoring"), name, value);
}
/*
* Raise an error if a known parameter is provided with an empty
* value. Currently there's no reason why empty parameters are needed;
* if we want to accept those, we'd need to add stricter default
* checking, as currently e.g. an empty `node_id` value will be converted
* to '0'.
*/
if (known_parameter == true && !strlen(value))
{
char error_message_buf[MAXLEN] = "";
maxlen_snprintf(error_message_buf,
_("\"%s\": no value provided"),
name);
item_list_append(error_list, error_message_buf);
}
}
fclose(fp);
/* check required parameters */
if (node_id_found == false)
{
item_list_append(error_list, _("\"node_id\": required parameter was not found"));
}
if (!strlen(options->node_name))
{
item_list_append(error_list, _("\"node_name\": required parameter was not found"));
}
if (!strlen(options->data_directory))
{
item_list_append(error_list, _("\"data_directory\": required parameter was not found"));
}
if (!strlen(options->conninfo))
{
item_list_append(error_list, _("\"conninfo\": required parameter was not found"));
}
else
{
/*
* Sanity check the provided conninfo string
*
* NOTE: PQconninfoParse() verifies the string format and checks for
* valid options but does not sanity check values
*/
PQconninfoOption *conninfo_options = NULL;
char *conninfo_errmsg = NULL;
conninfo_options = PQconninfoParse(options->conninfo, &conninfo_errmsg);
if (conninfo_options == NULL)
{
char error_message_buf[MAXLEN] = "";
snprintf(error_message_buf,
MAXLEN,
_("\"conninfo\": %s (provided: \"%s\")"),
conninfo_errmsg,
options->conninfo);
item_list_append(error_list, error_message_buf);
}
PQconninfoFree(conninfo_options);
}
/* set values for parameters which default to other parameters */
/*
* From 4.1, "repmgrd_standby_startup_timeout" replaces "standby_reconnect_timeout"
* in repmgrd; fall back to "standby_reconnect_timeout" if no value explicitly provided
*/
if (options->repmgrd_standby_startup_timeout == -1)
{
options->repmgrd_standby_startup_timeout = options->standby_reconnect_timeout;
}
/* add warning about changed "barman_" parameter meanings */
if ((options->barman_host[0] == '\0' && options->barman_server[0] != '\0') ||
(options->barman_host[0] != '\0' && options->barman_server[0] == '\0'))
{
item_list_append(error_list,
_("use \"barman_host\" for the hostname of the Barman server"));
item_list_append(error_list,
_("use \"barman_server\" for the name of the [server] section in the Barman configuration file"));
}
/* other sanity checks */
if (options->archive_ready_warning >= options->archive_ready_critical)
{
item_list_append(error_list,
_("\"archive_ready_critical\" must be greater than \"archive_ready_warning\""));
}
if (options->replication_lag_warning >= options->replication_lag_critical)
{
item_list_append(error_list,
_("\"replication_lag_critical\" must be greater than \"replication_lag_warning\""));
}
if (options->standby_reconnect_timeout < options->node_rejoin_timeout)
{
item_list_append(error_list,
_("\"standby_reconnect_timeout\" must be equal to or greater than \"node_rejoin_timeout\""));
}
}
bool
parse_recovery_conf(const char *data_dir, t_recovery_conf *conf)
{
char recovery_conf_path[MAXPGPATH] = "";
FILE *fp;
char *s = NULL,
buf[MAXLINELENGTH] = "";
char name[MAXLEN] = "";
char value[MAXLEN] = "";
snprintf(recovery_conf_path, MAXPGPATH,
"%s/%s",
data_dir,
RECOVERY_COMMAND_FILE);
fp = fopen(recovery_conf_path, "r");
if (fp == NULL)
{
return false;
}
/* Read file */
while ((s = fgets(buf, sizeof buf, fp)) != NULL)
{
/* Parse name/value pair from line */
_parse_line(buf, name, value);
/* Skip blank lines */
if (!strlen(name))
continue;
/* Skip comments */
if (name[0] == '#')
continue;
/* archive recovery settings */
if (strcmp(name, "restore_command") == 0)
strncpy(conf->restore_command, value, MAXLEN);
else if (strcmp(name, "archive_cleanup_command") == 0)
strncpy(conf->archive_cleanup_command, value, MAXLEN);
else if (strcmp(name, "recovery_end_command") == 0)
strncpy(conf->recovery_end_command, value, MAXLEN);
/* recovery target settings */
else if (strcmp(name, "recovery_target_name") == 0)
strncpy(conf->recovery_target_name, value, MAXLEN);
else if (strcmp(name, "recovery_target_time") == 0)
strncpy(conf->recovery_target_time, value, MAXLEN);
else if (strcmp(name, "recovery_target_xid") == 0)
strncpy(conf->recovery_target_xid, value, MAXLEN);
else if (strcmp(name, "recovery_target_inclusive") == 0)
conf->recovery_target_inclusive = parse_bool(value, NULL, NULL);
else if (strcmp(name, "recovery_target_timeline") == 0)
{
if (strncmp(value, "latest", MAXLEN) == 0)
{
conf->recovery_target_timeline = TARGET_TIMELINE_LATEST;
}
else
{
conf->recovery_target_timeline = atoi(value);
}
}
else if (strcmp(name, "recovery_target_action") == 0)
{
if (strcmp(value, "pause") == 0)
conf->recovery_target_action = RTA_PAUSE;
else if (strcmp(value, "promote") == 0)
conf->recovery_target_action = RTA_PROMOTE;
else if (strcmp(value, "shutdown") == 0)
conf->recovery_target_action = RTA_SHUTDOWN;
}
/* standby server settings */
else if (strcmp(name, "standby_mode") == 0)
conf->standby_mode = parse_bool(value, NULL, NULL);
else if (strcmp(name, "primary_conninfo") == 0)
strncpy(conf->primary_conninfo, value, MAXLEN);
else if (strcmp(name, "primary_slot_name") == 0)
strncpy(conf->trigger_file, value, MAXLEN);
else if (strcmp(name, "trigger_file") == 0)
strncpy(conf->trigger_file, value, MAXLEN);
else if (strcmp(name, "recovery_min_apply_delay") == 0)
parse_time_unit_parameter(name, value, conf->recovery_min_apply_delay, NULL);
}
fclose(fp);
return true;
}
void
_parse_line(char *buf, char *name, char *value)
{
int i = 0;
int j = 0;
/*
* Extract parameter name, if present
*/
for (; i < MAXLEN; ++i)
{
if (buf[i] == '=')
break;
switch (buf[i])
{
/* Ignore whitespace */
case ' ':
case '\n':
case '\r':
case '\t':
continue;
default:
name[j++] = buf[i];
}
}
name[j] = '\0';
/*
* Ignore any whitespace following the '=' sign
*/
for (; i < MAXLEN; ++i)
{
if (buf[i + 1] == ' ')
continue;
if (buf[i + 1] == '\t')
continue;
break;
}
/*
* Extract parameter value
*/
j = 0;
for (++i; i < MAXLEN; ++i)
if (buf[i] == '\'')
continue;
else if (buf[i] == '#')
break;
else if (buf[i] != '\n')
value[j++] = buf[i];
else
break;
value[j] = '\0';
trim(value);
}
static void
parse_time_unit_parameter(const char *name, const char *value, char *dest, ItemList *errors)
{
char *ptr = NULL;
int targ = strtol(value, &ptr, 10);
if (targ < 0)
{
if (errors != NULL)
{