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cmd, eth, p2p, p2p/discover: init and clean up the seed cache

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This commit is contained in:
Péter Szilágyi 2015-04-23 18:47:24 +03:00
parent 936c8e19ff
commit 5f735d6fce
6 changed files with 29 additions and 9 deletions
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2
cmd/bootnode/main.go
View File

@ -71,7 +71,7 @@ func main() {
}
}
if _, err := discover.ListenUDP(nodeKey, *listenAddr, natm); err != nil {
if _, err := discover.ListenUDP(nodeKey, *listenAddr, natm, ""); err != nil {
log.Fatal(err)
}
select {}

2
eth/backend.go
View File

@ -179,6 +179,7 @@ func New(config *Config) (*Ethereum, error) {
if err != nil {
return nil, err
}
seedDbPath := path.Join(config.DataDir, "seeds")
// Perform database sanity checks
d, _ := blockDb.Get([]byte("ProtocolVersion"))
@ -243,6 +244,7 @@ func New(config *Config) (*Ethereum, error) {
NAT: config.NAT,
NoDial: !config.Dial,
BootstrapNodes: config.parseBootNodes(),
SeedCache: seedDbPath,
}
if len(config.Port) > 0 {
eth.net.ListenAddr = ":" + config.Port

4
p2p/discover/node.go
View File

@ -387,3 +387,7 @@ func (db *nodeDB) add(id NodeID, addr *net.UDPAddr, tcpPort uint16) *Node {
db.update(n)
return n
}
func (db *nodeDB) close() {
db.ldb.Close()
}

16
p2p/discover/table.go
View File

@ -11,6 +11,9 @@ import (
"sort"
"sync"
"time"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
)
const (
@ -58,8 +61,14 @@ type bucket struct {
entries []*Node
}
func newTable(t transport, ourID NodeID, ourAddr *net.UDPAddr) *Table {
db, _ := newNodeDB("", Version)
func newTable(t transport, ourID NodeID, ourAddr *net.UDPAddr, seedCache string) *Table {
// Load the bootstrap seed cache (use in memory db upon failure)
db, err := newNodeDB(seedCache, Version)
if err != nil {
glog.V(logger.Warn).Infoln("Failed to open bootstrap seed cache:", err)
db, _ = newNodeDB("", Version)
}
// Create the bootstrap table
tab := &Table{
net: t,
db: db,
@ -81,9 +90,10 @@ func (tab *Table) Self() *Node {
return tab.self
}
// Close terminates the network listener.
// Close terminates the network listener and flushes the seed cache.
func (tab *Table) Close() {
tab.net.close()
tab.db.close()
}
// Bootstrap sets the bootstrap nodes. These nodes are used to connect

8
p2p/discover/udp.go
View File

@ -144,7 +144,7 @@ type reply struct {
}
// ListenUDP returns a new table that listens for UDP packets on laddr.
func ListenUDP(priv *ecdsa.PrivateKey, laddr string, natm nat.Interface) (*Table, error) {
func ListenUDP(priv *ecdsa.PrivateKey, laddr string, natm nat.Interface, seedCache string) (*Table, error) {
addr, err := net.ResolveUDPAddr("udp", laddr)
if err != nil {
return nil, err
@ -153,12 +153,12 @@ func ListenUDP(priv *ecdsa.PrivateKey, laddr string, natm nat.Interface) (*Table
if err != nil {
return nil, err
}
tab, _ := newUDP(priv, conn, natm)
tab, _ := newUDP(priv, conn, natm, seedCache)
glog.V(logger.Info).Infoln("Listening,", tab.self)
return tab, nil
}
func newUDP(priv *ecdsa.PrivateKey, c conn, natm nat.Interface) (*Table, *udp) {
func newUDP(priv *ecdsa.PrivateKey, c conn, natm nat.Interface, seedCache string) (*Table, *udp) {
udp := &udp{
conn: c,
priv: priv,
@ -176,7 +176,7 @@ func newUDP(priv *ecdsa.PrivateKey, c conn, natm nat.Interface) (*Table, *udp) {
realaddr = &net.UDPAddr{IP: ext, Port: realaddr.Port}
}
}
udp.Table = newTable(udp, PubkeyID(&priv.PublicKey), realaddr)
udp.Table = newTable(udp, PubkeyID(&priv.PublicKey), realaddr, seedCache)
go udp.loop()
go udp.readLoop()
return udp.Table, udp

6
p2p/server.go
View File

@ -59,6 +59,10 @@ type Server struct {
// with the rest of the network.
BootstrapNodes []*discover.Node
// SeedCache is the path to the database containing the previously seen live
// nodes in the network to use as potential bootstrap seeds.
SeedCache string
// Protocols should contain the protocols supported
// by the server. Matching protocols are launched for
// each peer.
@ -197,7 +201,7 @@ func (srv *Server) Start() (err error) {
}
// node table
ntab, err := discover.ListenUDP(srv.PrivateKey, srv.ListenAddr, srv.NAT)
ntab, err := discover.ListenUDP(srv.PrivateKey, srv.ListenAddr, srv.NAT, srv.SeedCache)
if err != nil {
return err
}