52 lines
1009 B
Go
52 lines
1009 B
Go
package smartban
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import (
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"sync"
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)
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type Cache[Peer, BlockKey, Hash comparable] struct {
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Hash func([]byte) Hash
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lock sync.RWMutex
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blocks map[BlockKey]map[Peer]Hash
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}
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type Block[Key any] struct {
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Key Key
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Data []byte
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}
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func (me *Cache[Peer, BlockKey, Hash]) Init() {
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me.blocks = make(map[BlockKey]map[Peer]Hash)
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}
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func (me *Cache[Peer, BlockKey, Hash]) RecordBlock(peer Peer, key BlockKey, data []byte) {
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hash := me.Hash(data)
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me.lock.Lock()
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defer me.lock.Unlock()
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peers := me.blocks[key]
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if peers == nil {
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peers = make(map[Peer]Hash)
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me.blocks[key] = peers
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}
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peers[peer] = hash
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}
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func (me *Cache[Peer, BlockKey, Hash]) CheckBlock(key BlockKey, data []byte) (bad []Peer) {
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correct := me.Hash(data)
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me.lock.RLock()
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defer me.lock.RUnlock()
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for peer, hash := range me.blocks[key] {
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if hash != correct {
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bad = append(bad, peer)
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}
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}
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return
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}
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func (me *Cache[Peer, BlockKey, Hash]) ForgetBlock(key BlockKey) {
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me.lock.Lock()
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defer me.lock.Unlock()
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delete(me.blocks, key)
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}
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