83 lignes
1,4 Kio
Go
83 lignes
1,4 Kio
Go
package scraperService
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import (
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"math/rand"
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"net"
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"sync"
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"github.com/ewhal/nyaa/model"
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)
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const InitialConnectionID = 0x41727101980
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type Bucket struct {
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Addr net.Addr
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access sync.Mutex
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transactions map[uint32]*Transaction
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}
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func (b *Bucket) NewTransaction(swarms []model.Torrent) (t *Transaction) {
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id := rand.Uint32()
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// get good id
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b.access.Lock()
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_, ok := b.transactions[id]
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for ok {
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id = rand.Uint32()
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_, ok = b.transactions[id]
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}
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t = &Transaction{
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TransactionID: id,
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bucket: b,
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swarms: make([]model.Torrent, len(swarms)),
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state: stateSendID,
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}
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copy(t.swarms[:], swarms[:])
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b.transactions[id] = t
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b.access.Unlock()
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return
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}
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func (b *Bucket) ForEachTransaction(v func(uint32, *Transaction)) {
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clone := make(map[uint32]*Transaction)
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b.access.Lock()
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for k := range b.transactions {
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clone[k] = b.transactions[k]
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}
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b.access.Unlock()
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for k := range clone {
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v(k, clone[k])
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}
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}
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func (b *Bucket) Forget(tid uint32) {
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b.access.Lock()
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_, ok := b.transactions[tid]
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if ok {
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delete(b.transactions, tid)
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}
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b.access.Unlock()
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}
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func (b *Bucket) VisitTransaction(tid uint32, v func(*Transaction)) {
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b.access.Lock()
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t, ok := b.transactions[tid]
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b.access.Unlock()
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if ok {
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v(t)
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} else {
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v(nil)
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}
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}
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func NewBucket(a net.Addr) *Bucket {
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return &Bucket{
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transactions: make(map[uint32]*Transaction),
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Addr: a,
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}
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}
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