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Parse recovery.conf file

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This will be useful for various kinds of diagnostics.
This commit is contained in:
Ian Barwick
2017-08-10 23:58:16 +09:00
parent 1292e8991a
commit f972aec198
5 changed files with 208 additions and 44 deletions
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140
configfile.c
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@@ -24,7 +24,6 @@ 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 tablespace_list_append(t_configuration_options *options, const char *arg);
static char *trim(char *s);
static void exit_with_config_file_errors(ItemList *config_errors, ItemList *config_warnings, bool terse);
@@ -556,6 +555,7 @@ _parse_config(t_configuration_options *options, ItemList *error_list, ItemList *
}
}
fclose(fp);
/* check required parameters */
if (node_id_found == false)
@@ -631,6 +631,103 @@ _parse_config(t_configuration_options *options, ItemList *error_list, ItemList *
}
bool
parse_recovery_conf(const char *data_dir, t_recovery_conf *conf)
{
char recovery_conf_path[MAXPGPATH] = "";
FILE *fp;
char *s,
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);
/* TODO: parse values */
/*else if (strcmp(name, "recovery_min_apply_delay") == 0)
strncpy(conf->, value, MAXLEN);*/
}
fclose(fp);
return true;
}
void
_parse_line(char *buf, char *name, char *value)
{
@@ -689,32 +786,6 @@ _parse_line(char *buf, char *name, char *value)
trim(value);
}
static char *
trim(char *s)
{
/* Initialize start, end pointers */
char *s1 = s,
*s2 = &s[strlen(s) - 1];
/* If string is empty, no action needed */
if (s2 < s1)
return s;
/* Trim and delimit right side */
while ((isspace(*s2)) && (s2 >= s1))
--s2;
*(s2 + 1) = '\0';
/* Trim left side */
while ((isspace(*s1)) && (s1 < s2))
++s1;
/* Copy finished string */
memmove(s, s1, s2 - s1);
s[s2 - s1 + 1] = '\0';
return s;
}
bool
@@ -884,13 +955,16 @@ parse_bool(const char *s, const char *config_item, ItemList *error_list)
if (strcasecmp(s, "yes") == 0)
return true;
initPQExpBuffer(&errors);
if (error_list != NULL)
{
initPQExpBuffer(&errors);
appendPQExpBuffer(&errors,
"\"%s\": unable to interpret '%s' as a boolean value",
config_item, s);
item_list_append(error_list, errors.data);
termPQExpBuffer(&errors);
appendPQExpBuffer(&errors,
"\"%s\": unable to interpret '%s' as a boolean value",
config_item, s);
item_list_append(error_list, errors.data);
termPQExpBuffer(&errors);
}
return false;
}