83 lines
1.9 KiB
Go
83 lines
1.9 KiB
Go
package node
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import (
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"context"
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"crypto/rand"
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"fmt"
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"github.com/Secured-Finance/p2p-oracle-node/config"
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"github.com/Secured-Finance/p2p-oracle-node/handler"
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mapset "github.com/deckarep/golang-set"
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"github.com/ipfs/go-log"
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"github.com/libp2p/go-libp2p"
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crypto "github.com/libp2p/go-libp2p-core/crypto"
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"github.com/libp2p/go-libp2p-core/host"
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pubsub "github.com/libp2p/go-libp2p-pubsub"
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"github.com/multiformats/go-multiaddr"
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)
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type Node struct {
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Host host.Host
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PubSub *pubsub.PubSub
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GlobalCtx context.Context
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GlobalCtxCancel context.CancelFunc
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OracleTopic string
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networkTopics mapset.Set
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handler *handler.Handler
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Config *config.Config
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Logger *log.ZapEventLogger
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}
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func NewNode() *Node {
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node := &Node{
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Config: config.NewConfig(),
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Logger: log.Logger("rendezvous"),
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networkTopics: mapset.NewSet(),
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}
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return node
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}
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func (node *Node) setupNode(ctx context.Context, prvKey crypto.PrivKey) {
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listenMultiAddr, err := multiaddr.NewMultiaddr(fmt.Sprintf("/ip4/%s/tcp/%s", node.Config.ListenAddr, node.Config.ListenPort))
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if err != nil {
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node.Logger.Fatal("Failed to generate new node multiaddress:", err)
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}
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host, err := libp2p.New(
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ctx,
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libp2p.ListenAddrs(listenMultiAddr),
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libp2p.Identity(prvKey),
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)
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if err != nil {
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node.Logger.Fatal("Failed to set a new libp2p node:", err)
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}
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node.Host = host
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node.startPubSub(ctx, host)
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}
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func Start() {
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node := NewNode()
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log.SetAllLoggers(log.LevelInfo)
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err := log.SetLogLevel("rendezvous", "info")
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if err != nil {
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node.Logger.Warn("Failed to set a rendezvous log level:", err)
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}
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node.parseFlags()
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r := rand.Reader
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// Creates a new RSA key pair for this host.
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prvKey, _, err := crypto.GenerateKeyPairWithReader(crypto.RSA, 2048, r)
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if err != nil {
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node.Logger.Fatal(err)
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}
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ctx, ctxCancel := context.WithCancel(context.Background())
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node.GlobalCtx = ctx
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node.GlobalCtxCancel = ctxCancel
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node.setupNode(ctx, prvKey)
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}
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