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peerstore.go
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peerstore.go
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package peerstore
import (
"fmt"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/multiformats/go-multiaddr"
"github.com/allora-network/b7s/models/blockless"
)
// PeerStore takes care of storing and reading peer information to and from persistent storage.
type PeerStore struct {
store Store
}
// New creates a new PeerStore handler.
func New(store Store) *PeerStore {
ps := PeerStore{
store: store,
}
return &ps
}
// Get wil retrieve peer with the given ID.
func (p *PeerStore) Get(id peer.ID) (blockless.Peer, error) {
var peer blockless.Peer
err := p.store.GetRecord(id.String(), &peer)
if err != nil {
return blockless.Peer{}, fmt.Errorf("could not retrieve peer: %w", err)
}
return peer, nil
}
// Store will persist the peer information.
func (p *PeerStore) Store(id peer.ID, addr multiaddr.Multiaddr, info peer.AddrInfo) error {
peerInfo := blockless.Peer{
ID: id,
MultiAddr: addr.String(),
AddrInfo: info,
}
err := p.store.SetRecord(id.String(), peerInfo)
if err != nil {
return fmt.Errorf("could not store peer: %w", err)
}
return nil
}
// Remove removes the peer from the peerstore.
func (p *PeerStore) Remove(id peer.ID) error {
err := p.store.Delete(id.String())
if err != nil {
return fmt.Errorf("could not remove peer: %w", err)
}
return nil
}
// Peers returns the list of peers from the peer store.
func (p *PeerStore) Peers() ([]blockless.Peer, error) {
ids := p.store.Keys()
var peers []blockless.Peer
for _, id := range ids {
var peer blockless.Peer
err := p.store.GetRecord(id, &peer)
if err != nil {
return nil, fmt.Errorf("could not retrieve peer (id: %v): %w", id, err)
}
peers = append(peers, peer)
}
return peers, nil
}