// Update the node state without moving data.
func (srv *InnerServer) UpdateNode(node *cluster.ClusterTopologyNode, reply *cluster.ClusterTopology) (err error) {
defer func() {
// Executes normally even if there is a panic
if e := recover(); e != nil {
log.Println("Run time panic: %v", e)
*reply = srv.config.Topology
err = errors.New("Runtime error.")
}
}()
log.Printf("Node %s update state %s\r\n", node.Node.Name, node.Node.State)
srv.config.Topology.AddNode(node)
srv.config.WriteTmp()
reply.Nodes = srv.config.Topology.Nodes
return nil
}
// Merge the cluster topology configuration.
func (srv *InnerServer) UpdateTopology(topology *cluster.ClusterTopology, reply *cluster.ClusterTopology) (err error) {
defer func() {
// Executes normally even if there is a panic
if e := recover(); e != nil {
log.Println("Run time panic: %v", e)
*reply = srv.config.Topology
err = errors.New("Runtime error.")
}
}()
srv.config.Topology.Merge(topology)
srv.config.WriteTmp()
reply.Nodes = srv.config.Topology.Nodes
// start data partitioner
go srv.partitioner.MoveData()
return nil
}
// Register the new node as a twin.
func (srv *InnerServer) RegisterTwin(node *cluster.ClusterTopologyNode, reply *cluster.ClusterTopology) (err error) {
defer func() {
// Executes normally even if there is a panic
if e := recover(); e != nil {
log.Println("Run time panic: %v", e)
*reply = srv.config.Topology
err = errors.New("Runtime error.")
}
}()
log.Printf("Node %s ask registration as twin\r\n", node.Node.Name)
srv.config.Topology.AddTwin(node)
srv.config.WriteTmp()
reply.Nodes = srv.config.Topology.Nodes
// start data partitioner
go srv.partitioner.MoveData()
go srv.updateAllClusterNodes() // update the state on the other nodes
return nil
}
// Register a new node in the cluster.
func (srv *InnerServer) RegisterNode(node *cluster.ClusterTopologyNode, reply *cluster.ClusterTopology) (err error) {
defer func() {
// Executes normally even if there is a panic
if e := recover(); e != nil {
log.Println("Run time panic: %v", e)
*reply = srv.config.Topology
err = errors.New("Runtime error.")
}
}()
log.Printf("Node %s registration or update state %s\r\n", node.Node.Name, node.Node.State)
srv.config.Topology.AddNode(node)
srv.config.WriteTmp()
reply.Nodes = srv.config.Topology.Nodes
if cluster.Inactive == node.Node.State {
srv.outcmdproc.Caller.RemoveClient(node.Node.Name)
}
// start data partitioner
go srv.partitioner.MoveData()
return nil
}
// Get the topology
func (srv *InnerServer) GetTopology(name *string, reply *cluster.ClusterTopology) (err error) {
log.Printf("Node %s asked topology\r\n", *name)
reply.Nodes = srv.config.Topology.GetNodes()
return nil
}