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geth_node.go
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geth_node.go
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package node
import (
"errors"
"fmt"
"os"
"path/filepath"
"github.com/syndtr/goleveldb/leveldb"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discv5"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/nat"
"github.com/status-im/status-go/eth-node/crypto"
"github.com/status-im/status-go/params"
)
// Errors related to node and services creation.
var (
ErrNodeMakeFailureFormat = "error creating p2p node: %s"
ErrWakuServiceRegistrationFailure = errors.New("failed to register the Waku service")
ErrWakuV2ServiceRegistrationFailure = errors.New("failed to register the WakuV2 service")
ErrLightEthRegistrationFailure = errors.New("failed to register the LES service")
ErrLightEthRegistrationFailureUpstreamEnabled = errors.New("failed to register the LES service, upstream is also configured")
ErrPersonalServiceRegistrationFailure = errors.New("failed to register the personal api service")
ErrStatusServiceRegistrationFailure = errors.New("failed to register the Status service")
ErrPeerServiceRegistrationFailure = errors.New("failed to register the Peer service")
)
// All general log messages in this package should be routed through this logger.
var logger = log.New("package", "status-go/node")
// MakeNode creates a geth node entity
func MakeNode(config *params.NodeConfig, accs *accounts.Manager, db *leveldb.DB) (*node.Node, error) {
// If DataDir is empty, it means we want to create an ephemeral node
// keeping data only in memory.
if config.DataDir != "" {
// make sure data directory exists
if err := os.MkdirAll(filepath.Clean(config.DataDir), os.ModePerm); err != nil {
return nil, fmt.Errorf("make node: make data directory: %v", err)
}
// make sure keys directory exists
if err := os.MkdirAll(filepath.Clean(config.KeyStoreDir), os.ModePerm); err != nil {
return nil, fmt.Errorf("make node: make keys directory: %v", err)
}
}
stackConfig, err := newGethNodeConfig(config)
if err != nil {
return nil, err
}
stack, err := node.New(stackConfig)
if err != nil {
return nil, fmt.Errorf(ErrNodeMakeFailureFormat, err.Error())
}
return stack, nil
}
// newGethNodeConfig returns default stack configuration for mobile client node
func newGethNodeConfig(config *params.NodeConfig) (*node.Config, error) {
// NOTE: I haven't changed anything related to this parameters, but
// it seems they were previously ignored if set to 0, but now they seem
// to be used, so they need to be set to something
maxPeers := 100
maxPendingPeers := 100
if config.MaxPeers != 0 {
maxPeers = config.MaxPeers
}
if config.MaxPendingPeers != 0 {
maxPendingPeers = config.MaxPendingPeers
}
nc := &node.Config{
DataDir: config.DataDir,
KeyStoreDir: config.KeyStoreDir,
UseLightweightKDF: true,
NoUSB: true,
Name: config.Name,
Version: config.Version,
P2P: p2p.Config{
NoDiscovery: true, // we always use only v5 server
ListenAddr: config.ListenAddr,
NAT: nat.Any(),
MaxPeers: maxPeers,
MaxPendingPeers: maxPendingPeers,
},
HTTPModules: config.FormatAPIModules(),
}
if config.IPCEnabled {
// use well-known defaults
if config.IPCFile == "" {
config.IPCFile = "geth.ipc"
}
nc.IPCPath = config.IPCFile
}
if config.HTTPEnabled {
nc.HTTPHost = config.HTTPHost
nc.HTTPPort = config.HTTPPort
nc.HTTPVirtualHosts = config.HTTPVirtualHosts
nc.HTTPCors = config.HTTPCors
}
if config.ClusterConfig.Enabled {
nc.P2P.BootstrapNodesV5 = parseNodesV5(config.ClusterConfig.BootNodes)
nc.P2P.StaticNodes = parseNodes(config.ClusterConfig.StaticNodes)
}
if config.NodeKey != "" {
sk, err := crypto.HexToECDSA(config.NodeKey)
if err != nil {
return nil, err
}
// override node's private key
nc.P2P.PrivateKey = sk
}
return nc, nil
}
// parseNodes creates list of enode.Node out of enode strings.
func parseNodes(enodes []string) []*enode.Node {
var nodes []*enode.Node
for _, item := range enodes {
parsedPeer, err := enode.ParseV4(item)
if err == nil {
nodes = append(nodes, parsedPeer)
} else {
logger.Error("Failed to parse enode", "enode", item, "err", err)
}
}
return nodes
}
// parseNodesV5 creates list of discv5.Node out of enode strings.
func parseNodesV5(enodes []string) []*discv5.Node {
var nodes []*discv5.Node
for _, enode := range enodes {
parsedPeer, err := discv5.ParseNode(enode)
if err == nil {
nodes = append(nodes, parsedPeer)
} else {
logger.Error("Failed to parse enode", "enode", enode, "err", err)
}
}
return nodes
}
func parseNodesToNodeID(enodes []string) []enode.ID {
nodeIDs := make([]enode.ID, 0, len(enodes))
for _, node := range parseNodes(enodes) {
nodeIDs = append(nodeIDs, node.ID())
}
return nodeIDs
}