Function clusterBlacklistCleanup

src/cluster.cpp:1254–1266

Before of the addNode() or Exists() operations we always remove expired * entries from the black list. This is an O(N) operation but it is not a * problem since add / exists operations are called very infrequently and * the hash table is supposed to contain very little elements at max. * However without the cleanup during long uptime and with some automated * node add/removal procedures, entr

 * However without the cleanup during long uptime and with some automated
 * node add/removal procedures, entries could accumulate. */
void clusterBlacklistCleanup(void) {
    dictIterator *di;
    dictEntry *de;

    di = dictGetSafeIterator(g_pserver->cluster->nodes_black_list);
    while((de = dictNext(di)) != NULL) {
        int64_t expire = dictGetUnsignedIntegerVal(de);

        if (expire < g_pserver->unixtime)
            dictDelete(g_pserver->cluster->nodes_black_list,dictGetKey(de));
    }
    dictReleaseIterator(di);
}

/* Cleanup the blacklist and add a new node ID to the black list. */
void clusterBlacklistAddNode(clusterNode *node) {