/**
* Record or update stat value.
*/
void update_stat( char *group, char *key, char *value ) {
syslog(LOG_DEBUG, "update_stat ( %s, %s, %s )\n", group, key, value);
statsd_stat_t *s;
statsd_stat_name_t l;
memset(&l, 0, sizeof(statsd_stat_name_t));
strcpy(l.group_name, group);
strcpy(l.key_name, key);
syslog(LOG_DEBUG, "HASH_FIND '%s' '%s'\n", l.group_name, l.key_name);
HASH_FIND( hh, stats, &l, sizeof(statsd_stat_name_t), s );
if (s) {
syslog(LOG_DEBUG, "Updating old stat entry");
wait_for_stats_lock();
s->value = atol( value );
remove_stats_lock();
} else {
syslog(LOG_DEBUG, "Adding new stat entry");
s = malloc(sizeof(statsd_stat_t));
memset(s, 0, sizeof(statsd_stat_t));
strcpy(s->name.group_name, group);
strcpy(s->name.key_name, key);
s->value = atol(value);
s->locked = 0;
wait_for_stats_lock();
HASH_ADD( hh, stats, name, sizeof(statsd_stat_name_t), s );
remove_stats_lock();
}
}
int statsd_deserialize( char *filename ) {
FILE *fp;
int filesize;
fp = fopen(filename, "r");
if (!fp) {
return 0;
}
fseek(fp, 0, SEEK_END);
filesize = ftell(fp);
rewind(fp);
if (filesize < 10) {
syslog(LOG_INFO, "No data found, skipping deserialization (length %d).\n", filesize);
if (fp) fclose(fp);
return 0;
}
char *data = (char*) calloc(sizeof(char), filesize + 20);
fread(data, 1, filesize, fp);
if(ferror(fp)) {
if (fp) fclose(fp);
if (data) free(data);
return 0;
}
if (fp) fclose(fp);
json_object *obj = json_tokener_parse(data);
json_object *obj_stats = json_object_object_get(obj, "stats");
{
json_object_object_foreach(obj_stats, key, val) {
statsd_stat_t *s = malloc(sizeof(statsd_stat_t));
memset(s, 0, sizeof(statsd_stat_t));
syslog(LOG_DEBUG, "Found key %s in file\n", key);
char *period = strchr(key, '.');
if (!period) {
strcpy(s->name.key_name, key);
} else {
int period_pos = period - key;
strncpy(s->name.group_name, key, period_pos);
strncpy(s->name.key_name, key + period_pos + 1, strlen(key) - period_pos + 1);
}
s->value = json_object_get_int(val);
s->locked = 0;
wait_for_stats_lock();
HASH_ADD( hh, stats, name, sizeof(statsd_stat_name_t), s );
remove_stats_lock();
}
}
void init_stats() {
char startup_time[12];
sprintf(startup_time, "%ld", time(NULL));
if (serialize_file && !clear_stats) {
syslog(LOG_DEBUG, "Deserializing stats from file.");
statsd_deserialize(serialize_file);
}
remove_stats_lock();
update_stat( "graphite", "last_flush", startup_time );
update_stat( "messages", "last_msg_seen", startup_time );
update_stat( "messages", "bad_lines_seen", "0" );
}