289 lines
8.4 KiB
Go
289 lines
8.4 KiB
Go
package node
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import (
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"context"
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"crypto/sha256"
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"encoding/json"
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"errors"
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"fmt"
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"oc-discovery/conf"
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"oc-discovery/daemons/node/common"
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"oc-discovery/daemons/node/indexer"
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"oc-discovery/daemons/node/pubsub"
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"oc-discovery/daemons/node/stream"
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"sync"
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"time"
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oclib "cloud.o-forge.io/core/oc-lib"
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"cloud.o-forge.io/core/oc-lib/models/peer"
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"cloud.o-forge.io/core/oc-lib/tools"
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"github.com/google/uuid"
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"github.com/libp2p/go-libp2p"
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pubsubs "github.com/libp2p/go-libp2p-pubsub"
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"github.com/libp2p/go-libp2p/core/crypto"
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pp "github.com/libp2p/go-libp2p/core/peer"
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)
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type Node struct {
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*common.LongLivedStreamRecordedService[interface{}] // change type of stream
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PS *pubsubs.PubSub
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IndexerService *indexer.IndexerService
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PubSubService *pubsub.PubSubService
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StreamService *stream.StreamService
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PeerID pp.ID
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isIndexer bool
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Mu sync.RWMutex
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}
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func InitNode(isNode bool, isIndexer bool, isNativeIndexer bool) (*Node, error) {
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if !isNode && !isIndexer {
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return nil, errors.New("wait... what ? your node need to at least something. Retry we can't be friend in that case")
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}
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logger := oclib.GetLogger()
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logger.Info().Msg("retrieving private key...")
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priv, err := tools.LoadKeyFromFilePrivate() // your node private key
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if err != nil {
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return nil, err
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}
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logger.Info().Msg("retrieving psk file...")
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psk, err := common.LoadPSKFromFile() // network common private Network. Public OC PSK is Public Network
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if err != nil {
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return nil, nil
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}
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logger.Info().Msg("open a host...")
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h, err := libp2p.New(
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libp2p.PrivateNetwork(psk),
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libp2p.Identity(priv),
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libp2p.ListenAddrStrings(
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fmt.Sprintf("/ip4/0.0.0.0/tcp/%d", conf.GetConfig().NodeEndpointPort),
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),
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)
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logger.Info().Msg("Host open on " + h.ID().String())
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if err != nil {
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return nil, errors.New("no host no node")
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}
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node := &Node{
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PeerID: h.ID(),
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isIndexer: isIndexer,
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LongLivedStreamRecordedService: common.NewStreamRecordedService[interface{}](h, 1000),
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}
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var ps *pubsubs.PubSub
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if isNode {
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logger.Info().Msg("generate opencloud node...")
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ps, err = pubsubs.NewGossipSub(context.Background(), node.Host)
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if err != nil {
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panic(err) // can't run your node without a propalgation pubsub, of state of node.
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}
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node.PS = ps
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logger.Info().Msg("connect to indexers...")
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common.ConnectToIndexers(node.Host, 0, 5, node.PeerID) // TODO : make var to change how many indexers are allowed.
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logger.Info().Msg("claims my node...")
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if _, err := node.claimInfo(conf.GetConfig().Name, conf.GetConfig().Hostname); err != nil {
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panic(err)
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}
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logger.Info().Msg("subscribe to decentralized search flow...")
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logger.Info().Msg("run garbage collector...")
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node.StartGC(30 * time.Second)
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if node.StreamService, err = stream.InitStream(context.Background(), node.Host, node.PeerID, 1000, node); err != nil {
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panic(err)
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}
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if node.PubSubService, err = pubsub.InitPubSub(context.Background(), node.Host, node.PS, node, node.StreamService); err != nil {
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panic(err)
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}
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f := func(ctx context.Context, evt common.Event, topic string) {
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if p, err := node.GetPeerRecord(ctx, evt.From); err == nil && len(p) > 0 {
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node.StreamService.SendResponse(p[0], &evt)
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}
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}
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node.SubscribeToSearch(node.PS, &f)
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}
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if isIndexer {
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logger.Info().Msg("generate opencloud indexer...")
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node.IndexerService = indexer.NewIndexerService(node.Host, ps, 5, isNativeIndexer)
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}
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logger.Info().Msg("connect to NATS")
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ListenNATS(node)
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logger.Info().Msg("Node is actually running.")
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return node, nil
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}
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func (d *Node) Close() {
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if d.isIndexer && d.IndexerService != nil {
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d.IndexerService.Close()
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}
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d.PubSubService.Close()
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d.StreamService.Close()
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d.Host.Close()
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}
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func (d *Node) publishPeerRecord(
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rec *indexer.PeerRecord,
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) error {
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priv, err := tools.LoadKeyFromFilePrivate() // your node private key
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if err != nil {
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return err
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}
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for _, ad := range common.StaticIndexers {
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var err error
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if common.StreamIndexers, err = common.TempStream(d.Host, *ad, common.ProtocolPublish, "", common.StreamIndexers, &common.StreamMuIndexes); err != nil {
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continue
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}
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stream := common.StreamIndexers[common.ProtocolPublish][ad.ID]
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base := indexer.PeerRecord{
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Name: rec.Name,
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DID: rec.DID,
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PubKey: rec.PubKey,
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ExpiryDate: time.Now().UTC().Add(2 * time.Minute),
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}
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payload, _ := json.Marshal(base)
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hash := sha256.Sum256(payload)
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rec.ExpiryDate = base.ExpiryDate
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rec.Signature, err = priv.Sign(hash[:])
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if err := json.NewEncoder(stream.Stream).Encode(&rec); err != nil { // then publish on stream
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return err
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}
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}
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return nil
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}
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func (d *Node) GetPeerRecord(
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ctx context.Context,
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pidOrdid string,
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) ([]*peer.Peer, error) {
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did := pidOrdid // if known pidOrdid is did
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pid := pidOrdid // if not known pidOrdid is pid
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access := oclib.NewRequestAdmin(oclib.LibDataEnum(oclib.PEER), nil)
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if data := access.Search(nil, did, true); len(data.Data) > 0 {
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did = data.Data[0].GetID()
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pid = data.Data[0].(*peer.Peer).PeerID
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}
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var err error
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var info map[string]indexer.PeerRecord
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for _, ad := range common.StaticIndexers {
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if common.StreamIndexers, err = common.TempStream(d.Host, *ad, common.ProtocolGet, "",
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common.StreamIndexers, &common.StreamMuIndexes); err != nil {
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continue
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}
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pidR, err := pp.Decode(pid)
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if err != nil {
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continue
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}
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stream := common.StreamIndexers[common.ProtocolGet][ad.ID]
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if err := json.NewEncoder(stream.Stream).Encode(indexer.GetValue{
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Key: did,
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PeerID: pidR,
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}); err != nil {
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return nil, err
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}
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for {
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var resp indexer.GetResponse
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if err := json.NewDecoder(stream.Stream).Decode(&resp); err != nil {
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return nil, err
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}
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if resp.Found {
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info = resp.Records
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break
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}
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}
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}
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var ps []*peer.Peer
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for _, pr := range info {
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if pk, err := pr.Verify(); err != nil {
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return nil, err
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} else if ok, p, err := pr.ExtractPeer(d.PeerID.String(), did, pk); err != nil {
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return nil, err
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} else {
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if ok {
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d.publishPeerRecord(&pr)
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}
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ps = append(ps, p)
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}
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}
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return ps, err
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}
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func (d *Node) claimInfo(
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name string,
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endPoint string, // TODO : endpoint is not necesserry StreamAddress
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) (*peer.Peer, error) {
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if endPoint == "" {
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return nil, errors.New("no endpoint found for peer")
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}
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did := uuid.New().String()
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peers := oclib.NewRequestAdmin(oclib.LibDataEnum(oclib.PEER), nil).Search(nil, fmt.Sprintf("%v", peer.SELF), false)
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if len(peers.Data) > 0 {
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did = peers.Data[0].GetID() // if already existing set up did as made
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}
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priv, err := tools.LoadKeyFromFilePrivate()
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if err != nil {
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return nil, err
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}
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pub, err := tools.LoadKeyFromFilePublic()
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if err != nil {
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return nil, err
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}
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pubBytes, err := crypto.MarshalPublicKey(pub)
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if err != nil {
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return nil, err
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}
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now := time.Now().UTC()
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expiry := now.Add(150 * time.Second)
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rec := &indexer.PeerRecord{
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Name: name,
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DID: did, // REAL PEER ID
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PubKey: pubBytes,
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}
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rec.PeerID = d.Host.ID().String()
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d.PeerID = d.Host.ID()
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payload, _ := json.Marshal(rec)
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hash := sha256.Sum256(payload)
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rec.Signature, err = priv.Sign(hash[:])
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if err != nil {
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return nil, err
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}
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rec.APIUrl = endPoint
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rec.StreamAddress = "/ip4/" + conf.GetConfig().Hostname + "/tcp/" + fmt.Sprintf("%v", conf.GetConfig().NodeEndpointPort) + "/p2p/" + rec.PeerID
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rec.NATSAddress = oclib.GetConfig().NATSUrl
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rec.WalletAddress = "my-wallet"
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rec.ExpiryDate = expiry
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if err := d.publishPeerRecord(rec); err != nil {
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return nil, err
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}
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/*if pk, err := rec.Verify(); err != nil {
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fmt.Println("Verify")
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return nil, err
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} else {*/
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_, p, err := rec.ExtractPeer(did, did, pub)
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return p, err
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//}
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}
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/*
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TODO:
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- Le booking est un flow neuf décentralisé :
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On check on attend une réponse, on valide, il passe par discovery, on relais.
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- Le shared workspace est une affaire de décentralisation,
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on communique avec les shared les mouvements
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- Un shared remplace la notion de partnership à l'échelle de partnershipping
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-> quand on share un workspace on devient partenaire temporaire
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qu'on le soit originellement ou non.
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-> on a alors les mêmes privilèges.
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- Les orchestrations admiralty ont le même fonctionnement.
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Un evenement provoque alors une création de clé de service.
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On doit pouvoir crud avec verification de signature un DBobject.
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*/
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