63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
package dht
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import "sync"
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type Store interface {
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Upsert(Bitmap, Contact)
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Get(Bitmap) []Contact
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CountStoredHashes() int
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}
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type storeImpl struct {
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// map of blob hashes to (map of node IDs to bools)
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hashes map[Bitmap]map[Bitmap]bool
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// stores the peers themselves, so they can be updated in one place
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contacts map[Bitmap]Contact
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lock sync.RWMutex
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}
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func newStore() *storeImpl {
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return &storeImpl{
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hashes: make(map[Bitmap]map[Bitmap]bool),
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contacts: make(map[Bitmap]Contact),
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}
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}
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func (s *storeImpl) Upsert(blobHash Bitmap, contact Contact) {
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s.lock.Lock()
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defer s.lock.Unlock()
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if _, ok := s.hashes[blobHash]; !ok {
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s.hashes[blobHash] = make(map[Bitmap]bool)
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}
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s.hashes[blobHash][contact.id] = true
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s.contacts[contact.id] = contact
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}
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func (s *storeImpl) Get(blobHash Bitmap) []Contact {
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s.lock.RLock()
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defer s.lock.RUnlock()
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var contacts []Contact
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if ids, ok := s.hashes[blobHash]; ok {
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for id := range ids {
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contact, ok := s.contacts[id]
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if !ok {
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panic("node id in IDs list, but not in nodeInfo")
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}
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contacts = append(contacts, contact)
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}
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}
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return contacts
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}
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func (s *storeImpl) RemoveTODO(contact Contact) {
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// TODO: remove peer from everywhere
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}
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func (s *storeImpl) CountStoredHashes() int {
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s.lock.RLock()
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defer s.lock.RUnlock()
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return len(s.hashes)
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}
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