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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| package peerstore | ||
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||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
|
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| "github.com/celestiaorg/go-header/p2p/peerstore" | ||
| "github.com/ipfs/go-datastore" | ||
| "github.com/ipfs/go-datastore/namespace" | ||
| "github.com/libp2p/go-libp2p/core/peer" | ||
|
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| logging "github.com/ipfs/go-log/v2" | ||
| ) | ||
|
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| var ( | ||
| storePrefix = datastore.NewKey("p2p") | ||
| peersKey = datastore.NewKey("good_peers") | ||
|
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| log = logging.Logger("module/header/peerstore") | ||
| ) | ||
|
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| var _ peerstore.Peerstore = (*peerStore)(nil) | ||
|
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| type peerStore struct { | ||
| ds datastore.Datastore | ||
| } | ||
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| // newPeerStore wraps the given datastore.Datastore with the `p2p` prefix. | ||
| func NewPeerStore(ds datastore.Datastore) peerstore.Peerstore { | ||
| return &peerStore{ds: namespace.Wrap(ds, storePrefix)} | ||
| } | ||
|
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| func (s *peerStore) Load(ctx context.Context) ([]peer.AddrInfo, error) { | ||
| log.Info("Loading peerlist") | ||
| bs, err := s.ds.Get(ctx, peersKey) | ||
| if err != nil { | ||
| return make([]peer.AddrInfo, 0), err | ||
| } | ||
|
|
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| peerlist := make([]peer.AddrInfo, 0) | ||
| err = json.Unmarshal(bs, &peerlist) | ||
| if err != nil { | ||
| return make([]peer.AddrInfo, 0), fmt.Errorf("error unmarshalling peerlist: %w", err) | ||
| } | ||
|
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| log.Info("Loaded peerlist", peerlist) | ||
| return peerlist, err | ||
| } | ||
|
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| func (s *peerStore) Put(ctx context.Context, peerlist []peer.AddrInfo) error { | ||
| log.Info("Storing peerlist", peerlist) | ||
|
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| bs, err := json.Marshal(peerlist) | ||
| if err != nil { | ||
| return fmt.Errorf("marshal checkpoint: %w", err) | ||
| } | ||
|
|
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| if err = s.ds.Put(ctx, peersKey, bs); err != nil { | ||
| return err | ||
| } | ||
|
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| return nil | ||
| } |