func checkUpdateFails(t *testing.T, network, oldAddrString, newAddrString string) {
oldAddr := util.MakeRawAddr(network, oldAddrString)
newAddr := util.MakeRawAddr(network, newAddrString)
retAddr, err := updatedAddr(oldAddr, newAddr)
if err == nil {
t.Fatalf("updatedAddr(%v, %v) should have failed; instead returned %v", oldAddr, newAddr, retAddr)
}
}
func checkUpdateMatches(t *testing.T, network, oldAddrString, newAddrString, expAddrString string) {
oldAddr := util.MakeRawAddr(network, oldAddrString)
newAddr := util.MakeRawAddr(network, newAddrString)
expAddr := util.MakeRawAddr(network, expAddrString)
retAddr, err := updatedAddr(oldAddr, newAddr)
if err != nil {
t.Fatalf("updatedAddr failed on %v, %v: %v", oldAddr, newAddr, err)
}
if retAddr.String() != expAddrString {
t.Fatalf("updatedAddr(%v, %v) was %s; expected %s", oldAddr, newAddr, retAddr, expAddr)
}
}
// parseBootstrapAddresses parses the gossip bootstrap addresses
// passed via -gossip command line flag.
func (g *Gossip) parseBootstrapAddresses() {
g.mu.Lock()
defer g.mu.Unlock()
if *GossipBootstrap != "" {
addresses := strings.Split(*GossipBootstrap, ",")
for _, addr := range addresses {
addr = strings.TrimSpace(addr)
_, err := net.ResolveTCPAddr("tcp", addr)
if err != nil {
log.Errorf("invalid gossip bootstrap address %s: %s", addr, err)
continue
}
g.bootstraps.addAddr(util.MakeRawAddr("tcp", addr))
}
}
// If we have no bootstrap hosts, fatal exit.
if g.bootstraps.len() == 0 {
log.Fatalf("no hosts specified for gossip network (use -gossip)")
}
// Remove our own node address.
if g.bootstraps.hasAddr(g.is.NodeAddr) {
g.isBootstrap = true
g.bootstraps.removeAddr(g.is.NodeAddr)
}
}
func newServer() (*server, error) {
// Determine hostname in case it hasn't been specified in -rpc or -http.
host, err := os.Hostname()
if err != nil {
host = "127.0.0.1"
}
// Resolve
if strings.HasPrefix(*rpcAddr, ":") {
*rpcAddr = host + *rpcAddr
}
_, err = net.ResolveTCPAddr("tcp", *rpcAddr)
if err != nil {
return nil, util.Errorf("unable to resolve RPC address %q: %v", *rpcAddr, err)
}
var tlsConfig *rpc.TLSConfig
if *certDir == "" {
tlsConfig = rpc.LoadInsecureTLSConfig()
} else {
var err error
if tlsConfig, err = rpc.LoadTLSConfig(*certDir); err != nil {
return nil, util.Errorf("unable to load TLS config: %v", err)
}
}
s := &server{
host: host,
mux: http.NewServeMux(),
clock: hlc.NewClock(hlc.UnixNano),
rpc: rpc.NewServer(util.MakeRawAddr("tcp", *rpcAddr), tlsConfig),
}
s.clock.SetMaxDrift(*maxDrift)
s.gossip = gossip.New(tlsConfig)
s.kvDB = kv.NewDB(kv.NewDistKV(s.gossip), s.clock)
s.kvREST = rest.NewRESTServer(s.kvDB)
s.node = NewNode(s.kvDB, s.gossip)
s.admin = newAdminServer(s.kvDB)
s.status = newStatusServer(s.kvDB)
s.structuredDB = structured.NewDB(s.kvDB)
s.structuredREST = structured.NewRESTServer(s.structuredDB)
return s, nil
}
// updatedAddr returns our "official" address based on the address we asked for
// (oldAddr) and the address we successfully bound to (newAddr). It's kind of
// hacky, but necessary to make TLS work.
func updatedAddr(oldAddr, newAddr net.Addr) (net.Addr, error) {
switch oldAddr.Network() {
case "tcp", "tcp4", "tcp6":
// After binding, it's possible that our host and/or port will be
// different from what we requested. If the hostname is different, we
// want to keep the original one since it's more likely to match our
// TLS certificate. But if the port is different, it should be because
// we asked for ":0" and got an arbitrary unused port; that needs to be
// reflected in our addr.
oldHost, oldPort, err := net.SplitHostPort(oldAddr.String())
if err != nil {
return nil, fmt.Errorf("Unable to parse original addr '%s': %v",
oldAddr.String(), err)
}
_, newPort, err := net.SplitHostPort(newAddr.String())
if err != nil {
return nil, fmt.Errorf("Unable to parse new addr '%s': %v",
newAddr.String(), err)
}
if newPort != oldPort && oldPort != "0" {
log.Warningf("Asked for port %s, got %s", oldPort, newPort)
}
return util.MakeRawAddr("tcp", net.JoinHostPort(oldHost, newPort)), nil
case "unix":
if oldAddr.String() != newAddr.String() {
return nil, fmt.Errorf("Asked for unix addr %s, got %s", oldAddr, newAddr)
}
return newAddr, nil
default:
return nil, fmt.Errorf("Unexpected network type: %s", oldAddr.Network())
}
}