Function clusterSetNodeAsMaster

src/cluster.cpp:1653–1667

Reconfigure the specified node 'n' as a master. This function is called when * a node that we believed to be a slave is now acting as master in order to * update the state of the node. */

 * a node that we believed to be a slave is now acting as master in order to
 * update the state of the node. */
void clusterSetNodeAsMaster(clusterNode *n) {
    if (nodeIsMaster(n)) return;

    if (n->slaveof) {
        clusterNodeRemoveSlave(n->slaveof,n);
        if (n != myself) n->flags |= CLUSTER_NODE_MIGRATE_TO;
    }
    n->flags &= ~CLUSTER_NODE_SLAVE;
    n->flags |= CLUSTER_NODE_MASTER;
    n->slaveof = NULL;

    /* Update config and state. */
    clusterDoBeforeSleep(CLUSTER_TODO_SAVE_CONFIG|
                         CLUSTER_TODO_UPDATE_STATE);
}

/* This function is called when we receive a master configuration via a
 * PING, PONG or UPDATE packet. What we receive is a node, a configEpoch of the