86 lines
1.6 KiB
Go
86 lines
1.6 KiB
Go
package peer
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import (
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"log"
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"net/netip"
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"runtime/debug"
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"sort"
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"sync"
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"time"
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)
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type pubAddrStore struct {
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lock sync.Mutex
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localPub bool
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localAddr netip.AddrPort
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lastSeen map[netip.AddrPort]time.Time
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addrList []netip.AddrPort
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}
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func newPubAddrStore(localAddr netip.AddrPort) *pubAddrStore {
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return &pubAddrStore{
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localPub: localAddr.IsValid(),
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localAddr: localAddr,
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lastSeen: map[netip.AddrPort]time.Time{},
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addrList: make([]netip.AddrPort, 0, 32),
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}
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}
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func (store *pubAddrStore) Store(add netip.AddrPort) {
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store.lock.Lock()
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defer store.lock.Unlock()
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if store.localPub {
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log.Printf("OOPS: Local pub but storage attempt: %s", debug.Stack())
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return
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}
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if !add.IsValid() {
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return
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}
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if _, exists := store.lastSeen[add]; !exists {
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store.addrList = append(store.addrList, add)
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}
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store.lastSeen[add] = time.Now()
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store.sort()
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}
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func (store *pubAddrStore) Get() (addrs [8]netip.AddrPort) {
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store.lock.Lock()
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defer store.lock.Unlock()
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store.clean()
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if store.localPub {
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addrs[0] = store.localAddr
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return
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}
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copy(addrs[:], store.addrList)
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return
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}
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func (store *pubAddrStore) clean() {
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if store.localPub {
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return
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}
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for ip, lastSeen := range store.lastSeen {
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if time.Since(lastSeen) > timeoutInterval {
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delete(store.lastSeen, ip)
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}
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}
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store.addrList = store.addrList[:0]
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for ip := range store.lastSeen {
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store.addrList = append(store.addrList, ip)
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}
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store.sort()
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}
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func (store *pubAddrStore) sort() {
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sort.Slice(store.addrList, func(i, j int) bool {
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return store.lastSeen[store.addrList[j]].Before(store.lastSeen[store.addrList[i]])
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})
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}
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