159 lines
3.3 KiB
Go
159 lines
3.3 KiB
Go
package protocol
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import (
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"git.lumeweb.com/LumeWeb/libs5-go/encoding"
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"git.lumeweb.com/LumeWeb/libs5-go/interfaces"
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"git.lumeweb.com/LumeWeb/libs5-go/net"
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"git.lumeweb.com/LumeWeb/libs5-go/protocol/base"
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"git.lumeweb.com/LumeWeb/libs5-go/types"
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"github.com/emirpasic/gods/sets/hashset"
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"github.com/vmihailenco/msgpack/v5"
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"go.uber.org/zap"
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"log"
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)
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var _ base.IncomingMessageTyped = (*HashQuery)(nil)
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var _ base.EncodeableMessage = (*HashQuery)(nil)
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type HashQuery struct {
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hash *encoding.Multihash
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kinds []types.StorageLocationType
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base.IncomingMessageTypedImpl
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base.IncomingMessageHandler
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}
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func NewHashQuery() *HashQuery {
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return &HashQuery{}
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}
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func NewHashRequest(hash *encoding.Multihash, kinds []types.StorageLocationType) *HashQuery {
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if len(kinds) == 0 {
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kinds = []types.StorageLocationType{types.StorageLocationTypeFile}
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}
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return &HashQuery{
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hash: hash,
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kinds: kinds,
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}
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}
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func (h HashQuery) Hash() *encoding.Multihash {
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return h.hash
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}
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func (h HashQuery) Kinds() []types.StorageLocationType {
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return h.kinds
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}
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func (h *HashQuery) DecodeMessage(dec *msgpack.Decoder) error {
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hash, err := dec.DecodeBytes()
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if err != nil {
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return err
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}
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h.hash = encoding.NewMultihash(hash)
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var kinds []types.StorageLocationType
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err = dec.Decode(&kinds)
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if err != nil {
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return err
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}
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h.kinds = kinds
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return nil
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}
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func (h HashQuery) EncodeMsgpack(enc *msgpack.Encoder) error {
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err := enc.EncodeInt(int64(types.ProtocolMethodHashQuery))
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if err != nil {
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return err
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}
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err = enc.EncodeBytes(h.hash.FullBytes())
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if err != nil {
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return err
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}
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err = enc.Encode(h.kinds)
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if err != nil {
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return err
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}
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return nil
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}
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func (h *HashQuery) HandleMessage(node interfaces.Node, peer net.Peer, verifyId bool) error {
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mapLocations, err := node.GetCachedStorageLocations(h.hash, h.kinds)
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if err != nil {
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log.Printf("Error getting cached storage locations: %v", err)
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return err
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}
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if len(mapLocations) > 0 {
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availableNodes := make([]*encoding.NodeId, 0, len(mapLocations))
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for key := range mapLocations {
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nodeId, err := encoding.DecodeNodeId(key)
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if err != nil {
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node.Logger().Error("Error decoding node id", zap.Error(err))
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continue
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}
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availableNodes = append(availableNodes, nodeId)
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}
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score, err := node.Services().P2P().SortNodesByScore(availableNodes)
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if err != nil {
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return err
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}
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sortedNodeId, err := (*score[0]).ToString()
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if err != nil {
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return err
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}
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entry, exists := mapLocations[sortedNodeId]
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if exists {
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err := peer.SendMessage(entry.ProviderMessage())
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if err != nil {
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return err
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}
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}
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}
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var peers *hashset.Set
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hashString, err := h.hash.ToString()
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if err != nil {
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return err
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}
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peersVal, ok := node.HashQueryRoutingTable().Get(hashString) // Implement HashQueryRoutingTable method
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if ok {
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peers = peersVal.(*hashset.Set)
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if !peers.Contains(peer.Id()) {
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peers.Add(peer.Id())
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}
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return nil
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}
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peerList := hashset.New()
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peerList.Add(peer.Id())
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node.HashQueryRoutingTable().Put(hashString, peerList)
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for _, val := range node.Services().P2P().Peers().Values() {
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peerVal := val.(net.Peer)
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if !peerVal.Id().Equals(peer.Id()) {
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err := peerVal.SendMessage(h.IncomingMessageImpl.Original())
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if err != nil {
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node.Logger().Error("Failed to send message", zap.Error(err))
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}
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}
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}
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return nil
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}
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