/
configfile.c
2321 lines (1947 loc) · 60.3 KB
/
configfile.c
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/*
* configfile.c - parse repmgr.conf and other configuration-related functionality
*
* Copyright (c) EnterpriseDB Corporation, 2010-2021
*
* 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"
#include <utils/elog.h>
#if (PG_ACTUAL_VERSION_NUM >= 100000)
#include <storage/fd.h> /* for durable_rename() */
#endif
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(bool terse);
static void _parse_config(ItemList *error_list, ItemList *warning_list);
static void _parse_line(char *buf, char *name, char *value);
static void parse_event_notifications_list(EventNotificationList *event_notifications, const char *arg);
static void clear_event_notification_list(EventNotificationList *event_notifications);
static void copy_config_file_options(t_configuration_options *original, t_configuration_options *copy);
static void tablespace_list_append(TablespaceList *tablespace_mapping, const char *arg);
static void tablespace_list_copy(t_configuration_options *original, t_configuration_options *copy);
static void tablespace_list_free(t_configuration_options *options);
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, 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"),
config_file);
log_detail("%s", 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(terse);
return;
}
static void
parse_config(bool terse)
{
/* Collate configuration file errors here for friendlier reporting */
static ItemList config_errors = {NULL, NULL};
static ItemList config_warnings = {NULL, NULL};
_parse_config(&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(ItemList *error_list, ItemList *warning_list)
{
FILE *fp;
char base_directory[MAXPGPATH];
bool config_ok;
ConfigFileSetting *setting;
int i = 0;
/*
* Clear lists pointing to allocated memory
*/
clear_event_notification_list(&config_file_options.event_notifications);
tablespace_list_free(&config_file_options);
/*
* Initialise with default values
*/
setting = &config_file_settings[0];
do {
switch (setting->type)
{
case CONFIG_INT:
*setting->val.intptr = setting->defval.intdefault;
break;
case CONFIG_BOOL:
*setting->val.boolptr = setting->defval.booldefault;
break;
case CONFIG_STRING:
{
memset((char *)setting->val.strptr, 0, setting->maxval.strmaxlen);
if (setting->defval.strdefault != NULL)
strncpy((char *)setting->val.strptr, setting->defval.strdefault, setting->maxval.strmaxlen);
break;
}
case CONFIG_FAILOVER_MODE:
*setting->val.failovermodeptr = setting->defval.failovermodedefault;
break;
case CONFIG_CONNECTION_CHECK_TYPE:
*setting->val.checktypeptr = setting->defval.checktypedefault;
break;
case CONFIG_REPLICATION_TYPE:
*setting->val.replicationtypeptr = setting->defval.replicationtypedefault;
break;
case CONFIG_EVENT_NOTIFICATION_LIST:
case CONFIG_TABLESPACE_MAPPING:
/* no default for these types; lists cleared above */
break;
default:
/* this should never happen */
log_error("unhandled setting type %i", (int)setting->type);
}
i++;
setting = &config_file_settings[i];
} while (setting->name != NULL);
/*
* 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;
}
/*
* A configuration file has been found, either provided by the user or
* found in one of the default locations. Sanity check whether we
* can open it, and fail with an error about the nature of the file
* (provided or default) if not. We do this here rather than having
* to teach the configuration file parser the difference.
*/
fp = fopen(config_file_path, "r");
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);
}
fclose(fp);
strncpy(base_directory, config_file_path, MAXPGPATH);
canonicalize_path(base_directory);
get_parent_directory(base_directory);
config_ok = ProcessRepmgrConfigFile(config_file_path, base_directory, error_list, warning_list);
/*
* Perform some more complex checks which the file processing step can't do,
* including checking for required parameters and sanity-checking parameters
* with dependencies on other parameters.
*/
if (config_ok == true)
{
/* check required parameters */
if (config_file_options.node_id == UNKNOWN_NODE_ID)
{
item_list_append(error_list, _("\"node_id\": required parameter was not found"));
}
if (!strlen(config_file_options.node_name))
{
item_list_append(error_list, _("\"node_name\": required parameter was not found"));
}
if (!strlen(config_file_options.data_directory))
{
item_list_append(error_list, _("\"data_directory\": required parameter was not found"));
}
if (!strlen(config_file_options.conninfo))
{
item_list_append(error_list, _("\"conninfo\": required parameter was not found"));
}
else
{
/*
* Basic sanity check of provided conninfo string; this will catch any
* invalid parameters (but not values).
*/
char *conninfo_errmsg = NULL;
if (validate_conninfo_string(config_file_options.conninfo, &conninfo_errmsg) == false)
{
PQExpBufferData error_message_buf;
initPQExpBuffer(&error_message_buf);
appendPQExpBuffer(&error_message_buf,
_("\"conninfo\": %s (provided: \"%s\")"),
conninfo_errmsg,
config_file_options.conninfo);
item_list_append(error_list, error_message_buf.data);
termPQExpBuffer(&error_message_buf);
}
}
/* 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 (config_file_options.repmgrd_standby_startup_timeout == -1)
{
config_file_options.repmgrd_standby_startup_timeout = config_file_options.standby_reconnect_timeout;
}
/* add warning about changed "barman_" parameter meanings */
if ((config_file_options.barman_host[0] == '\0' && config_file_options.barman_server[0] != '\0') ||
(config_file_options.barman_host[0] != '\0' && config_file_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 (config_file_options.archive_ready_warning >= config_file_options.archive_ready_critical)
{
item_list_append(error_list,
_("\"archive_ready_critical\" must be greater than \"archive_ready_warning\""));
}
if (config_file_options.replication_lag_warning >= config_file_options.replication_lag_critical)
{
item_list_append(error_list,
_("\"replication_lag_critical\" must be greater than \"replication_lag_warning\""));
}
if (config_file_options.standby_reconnect_timeout < config_file_options.node_rejoin_timeout)
{
item_list_append(error_list,
_("\"standby_reconnect_timeout\" must be equal to or greater than \"node_rejoin_timeout\""));
}
}
}
void
parse_configuration_item(ItemList *error_list, ItemList *warning_list, const char *name, const char *value)
{
ConfigFileSetting *setting = &config_file_settings[0];
int i = 0;
do {
if (strcmp(name, setting->name) == 0)
{
switch (setting->type)
{
/* Generic types */
case CONFIG_BOOL:
{
*(bool *)setting->val.boolptr = parse_bool(value, name, error_list);
break;
}
case CONFIG_INT:
{
*(int *)setting->val.intptr = repmgr_atoi(value, name, error_list, setting->minval.intminval);
break;
}
case CONFIG_STRING:
{
if (strlen(value) > setting->maxval.strmaxlen)
{
item_list_append_format(error_list,
_("value for \"%s\" must contain fewer than %i characters (current length: %i)"),
name,
setting->maxval.strmaxlen,
(int)strlen(value));
}
else
{
/* custom function for processing this string value */
if (setting->process.process_func != NULL)
{
(*setting->process.process_func)(name, value, (char *)setting->val.strptr, error_list);
}
/* otherwise copy as-is */
else
{
strncpy((char *)setting->val.strptr, value, setting->maxval.strmaxlen);
}
/* post-processing, e.g. path canonicalisation */
if (setting->process.postprocess_func != NULL)
{
(*setting->process.postprocess_func)(name, value, (char *)setting->val.strptr, error_list);
}
if (setting->process.providedptr != NULL)
{
*(bool *)setting->process.providedptr = true;
}
}
break;
}
/* repmgr types */
case CONFIG_FAILOVER_MODE:
{
if (strcmp(value, "manual") == 0)
{
*(failover_mode_opt *)setting->val.failovermodeptr = FAILOVER_MANUAL;
}
else if (strcmp(value, "automatic") == 0)
{
*(failover_mode_opt *)setting->val.failovermodeptr = FAILOVER_AUTOMATIC;
}
else
{
item_list_append_format(error_list,
_("value for \"%s\" must be \"automatic\" or \"manual\"\n"),
name);
}
break;
}
case CONFIG_CONNECTION_CHECK_TYPE:
{
if (strcasecmp(value, "ping") == 0)
{
*(ConnectionCheckType *)setting->val.checktypeptr = CHECK_PING;
}
else if (strcasecmp(value, "connection") == 0)
{
*(ConnectionCheckType *)setting->val.checktypeptr = CHECK_CONNECTION;
}
else if (strcasecmp(value, "query") == 0)
{
*(ConnectionCheckType *)setting->val.checktypeptr = CHECK_QUERY;
}
else
{
item_list_append_format(error_list,
_("value for \"%s\" must be \"ping\", \"connection\" or \"query\"\n"),
name);
}
break;
}
case CONFIG_REPLICATION_TYPE:
{
if (strcasecmp(value, "physical") == 0)
{
*(ReplicationType *)setting->val.replicationtypeptr = REPLICATION_TYPE_PHYSICAL;
}
else
{
item_list_append_format(error_list,
_("value for \"%s\" must be \"physical\"\n"),
name);
}
break;
}
case CONFIG_EVENT_NOTIFICATION_LIST:
{
parse_event_notifications_list((EventNotificationList *)setting->val.notificationlistptr,
value);
break;
}
case CONFIG_TABLESPACE_MAPPING:
{
tablespace_list_append((TablespaceList *)setting->val.tablespacemappingptr, value);
break;
}
default:
/* this should never happen */
log_error("encountered unknown configuration type %i when processing \"%s\"",
(int)setting->type,
setting->name);
}
/* Configuration item found - we can stop processing here */
return;
}
i++;
setting = &config_file_settings[i];
} while (setting->name);
/* If we reach here, the configuration item is either deprecated or unknown */
if (strcmp(name, "cluster") == 0)
{
item_list_append(warning_list,
_("parameter \"cluster\" is deprecated and will be ignored"));
}
else if (strcmp(name, "node") == 0)
{
item_list_append(warning_list,
_("parameter \"node\" has been renamed to \"node_id\""));
}
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"));
}
else if (strcmp(name, "loglevel") == 0)
{
item_list_append(warning_list,
_("parameter \"loglevel\" has been renamed to \"log_level\""));
}
else if (strcmp(name, "logfacility") == 0)
{
item_list_append(warning_list,
_("parameter \"logfacility\" has been renamed to \"log_facility\""));
}
else if (strcmp(name, "logfile") == 0)
{
item_list_append(warning_list,
_("parameter \"logfile\" has been renamed to \"log_file\""));
}
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"));
}
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"));
}
else
{
item_list_append_format(warning_list,
_("%s='%s': unknown name/value pair provided; ignoring"), name, value);
}
}
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);
}
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)
{
item_list_append_format(errors,
_("invalid value \"%s\" provided for \"%s\""),
value,
name);
}
return;
}
if (ptr && *ptr)
{
if (strcmp(ptr, "ms") != 0 && strcmp(ptr, "s") != 0 &&
strcmp(ptr, "min") != 0 && strcmp(ptr, "h") != 0 &&
strcmp(ptr, "d") != 0)
{
if (errors != NULL)
{
item_list_append_format(
errors,
_("value for \"%s\" must be one of ms/s/min/h/d (provided: \"%s\")"),
name,
value);
return;
}
}
}
strncpy(dest, value, MAXLEN);
}
/*
* reload_config()
*
* This is only called by repmgrd after receiving a SIGHUP or when a monitoring
* loop is started up; it therefore only needs to reload options required
* by repmgrd, which are as follows:
*
* changeable options (keep the list in "doc/repmgrd-configuration.xml" in sync
* with these):
*
* - async_query_timeout
* - child_nodes_check_interval
* - child_nodes_connected_min_count
* - child_nodes_connected_include_witness
* - child_nodes_disconnect_command
* - child_nodes_disconnect_min_count
* - child_nodes_disconnect_timeout
* - connection_check_type
* - conninfo
* - degraded_monitoring_timeout
* - event_notification_command
* - event_notifications
* - failover
* - failover_validation_command
* - follow_command
* - log_facility
* - log_file
* - log_level
* - log_status_interval
* - monitor_interval_secs
* - monitoring_history
* - primary_notification_timeout
* - primary_visibility_consensus
* - always_promote
* - promote_command
* - reconnect_attempts
* - reconnect_interval
* - repmgrd_standby_startup_timeout
* - retry_promote_interval_secs
* - sibling_nodes_disconnect_timeout
* - standby_disconnect_on_failover
*
*
* Not publicly documented:
* - promote_delay
*
* non-changeable options (repmgrd references these from the "repmgr.nodes"
* table, not the configuration file)
*
* - node_id
* - node_name
* - data_directory
* - location
* - priority
* - replication_type
*
* extract with something like:
* grep config_file_options\\. repmgrd*.c | perl -n -e '/config_file_options\.([\w_]+)/ && print qq|$1\n|;' | sort | uniq
*
* Returns "true" if the configuration was successfully changed, otherwise "false".
*/
bool
reload_config(t_server_type server_type)
{
bool log_config_changed = false;
ItemList config_errors = {NULL, NULL};
ItemList config_warnings = {NULL, NULL};
ItemList config_changes = {NULL, NULL};
t_configuration_options orig_config_file_options;
copy_config_file_options(&config_file_options, &orig_config_file_options);
log_info(_("reloading configuration file"));
log_detail(_("using file \"%s\""), config_file_path);
/*
* _parse_config() will sanity-check the provided values and put any
* errors/warnings in the provided lists; no need to add further sanity
* checks here. We do still need to check for repmgrd-specific
* requirements.
*/
_parse_config(&config_errors, &config_warnings);
if (config_file_options.failover == FAILOVER_AUTOMATIC
&& (server_type == PRIMARY || server_type == STANDBY))
{
if (config_file_options.promote_command[0] == '\0')
{
item_list_append(&config_errors, _("\"promote_command\": required parameter was not found"));
}
if (config_file_options.follow_command[0] == '\0')
{
item_list_append(&config_errors, _("\"follow_command\": required parameter was not found"));
}
}
/* The following options cannot be changed */
if (config_file_options.node_id != orig_config_file_options.node_id)
{
item_list_append_format(&config_errors,
_("\"node_id\" cannot be changed, retaining current configuration %i %i"),
config_file_options.node_id,
orig_config_file_options.node_id);
}
if (strncmp(config_file_options.node_name, orig_config_file_options.node_name, sizeof(config_file_options.node_name)) != 0)
{
item_list_append(&config_errors,
_("\"node_name\" cannot be changed, keeping current configuration"));
}
/*
* conninfo
*
* _parse_config() will already have sanity-checked the string; we do that here
* again so we can avoid trying to connect with a known bad string
*/
if (strncmp(config_file_options.conninfo, orig_config_file_options.conninfo, sizeof(config_file_options.conninfo)) != 0 && validate_conninfo_string(config_file_options.conninfo, NULL))
{
PGconn *conn;
/* Test conninfo string works */
conn = establish_db_connection(config_file_options.conninfo, false);
if (!conn || (PQstatus(conn) != CONNECTION_OK))
{
item_list_append_format(&config_errors,
_("provided \"conninfo\" string \"%s\" is not valid"),
config_file_options.conninfo);
}
else
{
item_list_append_format(&config_changes,
_("\"conninfo\" changed from \"%s\" to \"%s\""),
orig_config_file_options.conninfo,
config_file_options.conninfo);
}
PQfinish(conn);
}