60 lines
1.8 KiB
Go
60 lines
1.8 KiB
Go
// Copyright 2016 The Chihaya Authors. All rights reserved.
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// Use of this source code is governed by the BSD 2-Clause license,
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// which can be found in the LICENSE file.
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package store
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import (
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"fmt"
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"time"
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"github.com/chihaya/chihaya"
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)
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var peerStoreDrivers = make(map[string]PeerStoreDriver)
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// PeerStore represents an interface for manipulating peers.
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type PeerStore interface {
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PutSeeder(infoHash chihaya.InfoHash, p chihaya.Peer) error
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DeleteSeeder(infoHash chihaya.InfoHash, p chihaya.Peer) error
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PutLeecher(infoHash chihaya.InfoHash, p chihaya.Peer) error
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DeleteLeecher(infoHash chihaya.InfoHash, p chihaya.Peer) error
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GraduateLeecher(infoHash chihaya.InfoHash, p chihaya.Peer) error
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AnnouncePeers(infoHash chihaya.InfoHash, seeder bool, numWant int) (peers, peers6 []chihaya.Peer, err error)
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CollectGarbage(cutoff time.Time) error
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}
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// PeerStoreDriver represents an interface for creating a handle to the storage
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// of peers.
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type PeerStoreDriver interface {
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New(*DriverConfig) (PeerStore, error)
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}
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// RegisterPeerStoreDriver makes a driver available by the provided name.
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//
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// If this function is called twice with the same name or if the driver is nil,
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// it panics.
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func RegisterPeerStoreDriver(name string, driver PeerStoreDriver) {
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if driver == nil {
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panic("storage: could not register nil PeerStoreDriver")
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}
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if _, dup := peerStoreDrivers[name]; dup {
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panic("storage: could not register duplicate PeerStoreDriver: " + name)
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}
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peerStoreDrivers[name] = driver
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}
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// OpenPeerStore returns a PeerStore specified by a configuration.
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func OpenPeerStore(cfg *DriverConfig) (PeerStore, error) {
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driver, ok := peerStoreDrivers[cfg.Name]
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if !ok {
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return nil, fmt.Errorf("storage: unknown driver %q (forgotten import?)", cfg)
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}
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return driver.New(cfg)
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}
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