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routingTable.go
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/
routingTable.go
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package mainline
import (
"net"
"sync"
)
type routingTable struct {
sync.RWMutex
nodes []net.UDPAddr
maxNeighbors uint
}
func newRoutingTable(maxNeighbors uint) *routingTable {
return &routingTable{
nodes: make([]net.UDPAddr, 0, maxNeighbors),
maxNeighbors: maxNeighbors,
}
}
func (rt *routingTable) addNode(node net.UDPAddr) {
if node.Port == 0 {
return
}
rt.Lock()
defer rt.Unlock()
rt.nodes = append(rt.nodes, node)
}
func (rt *routingTable) getNodes() []net.UDPAddr {
rt.Lock()
defer rt.Unlock()
if len(rt.nodes) <= int(rt.maxNeighbors) {
nodes := rt.nodes
rt.nodes = []net.UDPAddr{}
return nodes
}
nodes := rt.nodes[:rt.maxNeighbors]
rt.nodes = rt.nodes[rt.maxNeighbors+1:]
return nodes
}
func (rt *routingTable) isEmpty() bool {
rt.RLock()
defer rt.RUnlock()
return len(rt.nodes) == 0
}