Function clusterSetMaster

src/cluster.cpp:4172–4188

Set the specified node 'n' as master for this node. * If this node is currently a master, it is turned into a slave. */

/* Set the specified node 'n' as master for this node.
 * If this node is currently a master, it is turned into a slave. */
void clusterSetMaster(clusterNode *n) {
    serverAssert(n != myself);
    serverAssert(myself->numslots == 0);

    if (nodeIsMaster(myself)) {
        myself->flags &= ~(CLUSTER_NODE_MASTER|CLUSTER_NODE_MIGRATE_TO);
        myself->flags |= CLUSTER_NODE_SLAVE;
        clusterCloseAllSlots();
    } else {
        if (myself->slaveof)
            clusterNodeRemoveSlave(myself->slaveof,myself);
    }
    myself->slaveof = n;
    clusterNodeAddSlave(n,myself);
    replicationAddMaster(n->ip, n->port);
    resetManualFailover();
}

/* -----------------------------------------------------------------------------
 * Nodes to string representation functions.