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registry.go
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registry.go
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package adaptiveservice
import (
"bytes"
"errors"
"fmt"
"io"
"net"
"os"
"path/filepath"
"reflect"
"strings"
"sync"
"time"
"github.com/niubaoshu/gotiny"
)
var (
udsRegistry = "@adaptiveservice/"
chanRegistry = struct {
sync.RWMutex
table map[string]*chanTransport
}{table: make(map[string]*chanTransport)}
)
func regServiceChan(publisherName, serviceName string, ct *chanTransport) {
name := publisherName + "_" + serviceName
chanRegistry.Lock()
defer chanRegistry.Unlock()
if _, has := chanRegistry.table[name]; has {
panic("registering duplicated channel for " + name)
}
chanRegistry.table[name] = ct
}
func delServiceChan(publisherName, serviceName string) {
name := publisherName + "_" + serviceName
chanRegistry.Lock()
delete(chanRegistry.table, name)
chanRegistry.Unlock()
}
func serviceNamesInProcess(publisherName, serviceName string) (names []string) {
name := publisherName + "_" + serviceName
if strings.Contains(name, "*") {
chanRegistry.RLock()
for ctname := range chanRegistry.table {
chanRegistry.RUnlock()
if wildcardMatch(name, ctname) {
names = append(names, ctname)
}
chanRegistry.RLock()
}
chanRegistry.RUnlock()
} else {
chanRegistry.RLock()
ct := chanRegistry.table[name]
chanRegistry.RUnlock()
if ct != nil {
names = append(names, name)
}
}
return
}
// support wildcard
func queryServiceProcess(publisherName, serviceName string) (serviceInfos []*ServiceInfo) {
names := serviceNamesInProcess(publisherName, serviceName)
for _, name := range names {
strs := strings.Split(name, "_")
sInfo := &ServiceInfo{strs[0], strs[1], "self", "internal"}
serviceInfos = append(serviceInfos, sInfo)
}
return
}
// support wildcard
func (c *Client) lookupServiceChan(publisherName, serviceName string) (ccts []*clientChanTransport) {
names := serviceNamesInProcess(publisherName, serviceName)
for _, name := range names {
chanRegistry.RLock()
ct := chanRegistry.table[name]
chanRegistry.RUnlock()
if ct != nil {
ccts = append(ccts, &clientChanTransport{c, ct})
}
}
return
}
func toUDSAddr(publisherName, serviceName string) (addr string) {
return udsRegistry + publisherName + "_" + serviceName + ".sock"
}
func serviceNamesInOS(publisherName, serviceName string) (names []string) {
f, err := os.Open("/proc/net/unix")
if err != nil {
return nil
}
defer f.Close()
var b bytes.Buffer
_, err = b.ReadFrom(f)
if err != nil {
return nil
}
distinctEntires := make(map[string]struct{})
tName := publisherName + "_" + serviceName
//skip first line
b.ReadString('\n')
for {
line, err := b.ReadString('\n')
if err != nil {
break
}
//0000000000000000: 00000002 00000000 00010000 0001 01 10156659 @adaptiveservice/publisherName_serviceName.sock
fs := strings.Fields(line)
if len(fs) == 8 {
addr := fs[7]
if strings.Contains(addr, udsRegistry) {
name := strings.TrimSuffix(strings.TrimPrefix(addr, udsRegistry), ".sock")
// there can be multiple entires with the same name
if _, has := distinctEntires[name]; has {
continue
}
distinctEntires[name] = struct{}{}
if wildcardMatch(tName, name) {
names = append(names, name)
}
}
}
}
return
}
// support wildcard
func queryServiceOS(publisherName, serviceName string) (serviceInfos []*ServiceInfo) {
names := serviceNamesInOS(publisherName, serviceName)
for _, name := range names {
strs := strings.Split(name, "_")
sInfo := &ServiceInfo{strs[0], strs[1], "self", udsRegistry + name + ".sock"}
serviceInfos = append(serviceInfos, sInfo)
}
return
}
// support wildcard
func lookupServiceUDS(publisherName, serviceName string) (addrs []string) {
names := serviceNamesInOS(publisherName, serviceName)
for _, name := range names {
addrs = append(addrs, udsRegistry+name+".sock")
}
return
}
func (svc *service) regServiceLAN(port string) error {
c := NewClient(WithScope(ScopeProcess|ScopeOS), WithLogger(svc.s.lg)).SetDiscoverTimeout(0)
conn := <-c.Discover(BuiltinPublisher, SrvLANRegistry)
if conn == nil {
return errors.New("LANRegistry not found")
}
defer conn.Close()
return conn.SendRecv(®ServiceInLAN{svc.publisherName, svc.serviceName, port}, nil)
}
func (svc *service) delServiceLAN() error {
c := NewClient(WithScope(ScopeProcess|ScopeOS), WithLogger(svc.s.lg)).SetDiscoverTimeout(0)
conn := <-c.Discover(BuiltinPublisher, SrvLANRegistry)
if conn == nil {
return errors.New("LANRegistry not found")
}
defer conn.Close()
return conn.Send(&delServiceInLAN{svc.publisherName, svc.serviceName})
}
// support wildcard
func queryServiceLAN(publisherName, serviceName string, lg Logger) (serviceInfos []*ServiceInfo) {
c := NewClient(WithScope(ScopeProcess|ScopeOS), WithLogger(lg)).SetDiscoverTimeout(0)
conn := <-c.Discover(BuiltinPublisher, SrvLANRegistry)
if conn == nil {
return
}
defer conn.Close()
conn.SendRecv(&queryServiceInLAN{publisherName, serviceName}, &serviceInfos)
return
}
// support wildcard
func (c *Client) lookupServiceLAN(publisherName, serviceName string, providerIDs ...string) (addrs []string) {
serviceInfos := queryServiceLAN(publisherName, serviceName, c.lg)
has := func(target string) bool {
if len(providerIDs) == 0 { // match all
return true
}
for _, str := range providerIDs {
if wildcardMatch(str, target) {
return true
}
}
return false
}
for _, provider := range serviceInfos {
if has(provider.ProviderID) {
addrs = append(addrs, provider.Addr)
}
}
return
}
// taken from https://github.com/IBM/netaddr/blob/master/net_utils.go
// NewIP returns a new IP with the given size. The size must be 4 for IPv4 and
// 16 for IPv6.
func newIP(size int) net.IP {
if size == 4 {
return net.ParseIP("0.0.0.0").To4()
}
if size == 16 {
return net.ParseIP("::")
}
panic("Bad value for size")
}
// BroadcastAddr returns the last address in the given network, or the broadcast address.
func broadcastAddr(n *net.IPNet) net.IP {
// The golang net package doesn't make it easy to calculate the broadcast address. :(
broadcast := newIP(len(n.IP))
for i := 0; i < len(n.IP); i++ {
broadcast[i] = n.IP[i] | ^n.Mask[i]
}
return broadcast
}
type infoLAN struct {
ip net.IP // self ip
ipnet *net.IPNet
bcastAddr *net.UDPAddr
}
type packetMsg struct {
msg interface{}
raddr net.Addr
}
type providerInfo struct {
timeStamp time.Time
addr string
proxied bool
}
type providers struct {
table map[string]*providerInfo // {"providerID1":{time, "192.168.0.11:12345"}, {time, "providerID2":"192.168.0.26:33556"}}
}
type serviceInfoTime struct {
timeStamp time.Time // last update time
si []*ServiceInfo
}
type registryLAN struct {
s *Server
packetConn net.PacketConn
infoLANs []*infoLAN
sync.RWMutex
serviceInfoCache map[string]*serviceInfoTime
done chan struct{}
cmdChan chan interface{}
}
func (s *Server) newLANRegistry() (*registryLAN, error) {
packetConn, err := net.ListenPacket("udp4", ":"+s.broadcastPort)
if err != nil {
s.lg.Errorf("listen lan broadcast error: %v", err)
return nil, err
}
s.addCloser(ioCloser(packetConn.Close))
var infoLANs []*infoLAN
addrs, _ := net.InterfaceAddrs()
for _, addr := range addrs {
ip, ipnet, _ := net.ParseCIDR(addr.String())
if ip.To4() != nil && !ip.IsLoopback() {
bcast := broadcastAddr(ipnet)
bcastAddr, _ := net.ResolveUDPAddr("udp4", bcast.String()+":"+s.broadcastPort)
il := &infoLAN{
ip: ip,
ipnet: ipnet,
bcastAddr: bcastAddr,
}
infoLANs = append(infoLANs, il)
}
}
r := ®istryLAN{
s: s,
packetConn: packetConn,
infoLANs: infoLANs,
serviceInfoCache: make(map[string]*serviceInfoTime),
done: make(chan struct{}),
cmdChan: make(chan interface{}),
}
go r.run()
return r, nil
}
// msg must be pointer
func (r *registryLAN) broadcast(msg interface{}) error {
bufMsg := gotiny.Marshal(&msg)
r.s.lg.Debugf("broadcast LAN msg %#v: %s", msg, bufMsg)
for _, lan := range r.infoLANs {
if _, err := r.packetConn.WriteTo(bufMsg, lan.bcastAddr); err != nil {
return err
}
}
return nil
}
// ServiceInfo is service information.
type ServiceInfo struct {
Publisher string
Service string
ProviderID string
Addr string // "192.168.0.11:12345", "192.168.0.11:12345P" if proxied
}
type queryInLAN struct {
name string // "publisher_service"
}
type foundInLAN struct {
name string // "publisher_service"
providerID string
port string
}
func init() {
RegisterType(([]*ServiceInfo)(nil))
RegisterType((*queryInLAN)(nil))
RegisterType((*foundInLAN)(nil))
}
type cmdLANRegister struct {
name string // "publisher_service"
port string
}
type cmdLANDelete struct {
name string // "publisher_service"
}
type cmdLANQuery struct {
name string // "publisher_service"
chanServiceInfo chan []*ServiceInfo
}
func (r *registryLAN) registerServiceInLAN(publisher, service, port string) {
name := publisher + "_" + service
r.cmdChan <- &cmdLANRegister{name, port}
}
func (r *registryLAN) deleteServiceInLAN(publisher, service string) {
name := publisher + "_" + service
r.cmdChan <- &cmdLANDelete{name}
}
// support wildcard
func (r *registryLAN) queryServiceInLAN(publisher, service string) []*ServiceInfo {
name := publisher + "_" + service
r.Lock()
if len(r.serviceInfoCache) > 1000 {
r.serviceInfoCache = make(map[string]*serviceInfoTime)
}
sit := r.serviceInfoCache[name]
r.Unlock()
if sit != nil && time.Since(sit.timeStamp) < 15*time.Second {
return sit.si
}
cmd := &cmdLANQuery{name, make(chan []*ServiceInfo, 1)}
r.cmdChan <- cmd
si := <-cmd.chanServiceInfo
r.Lock()
r.serviceInfoCache[name] = &serviceInfoTime{time.Now(), si}
r.Unlock()
return si
}
func (r *registryLAN) run() {
type localSvcInfo struct {
timeStamp time.Time
port string
}
pconn := r.packetConn
lg := r.s.lg
packetChan := make(chan *packetMsg)
// "publisher_service": {time.time, "12345"}
localServiceTable := make(map[string]*localSvcInfo)
// "publisher_service": {time.Time, {"providerID1":"192.168.0.11:12345", "providerID2":"192.168.0.26:33556"}}
serviceCache := make(map[string]*providers)
localRecord := filepath.Join(asTmpDir, "local_services.record")
f, err := os.Open(localRecord)
if err == nil {
t := time.Now()
for {
var name, port string
_, err := fmt.Fscanln(f, &name, &port)
if err != nil {
break
}
localServiceTable[name] = &localSvcInfo{t, port}
}
f.Close()
os.Remove(localRecord)
}
readConn := func() {
buf := make([]byte, 512)
for {
if r.done == nil {
break
}
pconn.SetReadDeadline(time.Now().Add(3 * time.Second))
n, raddr, err := pconn.ReadFrom(buf)
if err != nil {
if !os.IsTimeout(err) {
lg.Warnf("lan registry receive error: %v", err)
}
if errors.Is(err, io.EOF) || strings.Contains(err.Error(), "use of closed network connection") {
return
}
continue
}
var msg interface{}
gotiny.Unmarshal(buf[:n], &msg)
lg.Debugf("received LAN msg from %v: %#v", raddr, msg)
packetChan <- &packetMsg{msg, raddr}
}
}
go readConn()
replyTo := func(msg interface{}, raddr net.Addr) {
bufMsg := gotiny.Marshal(&msg)
lg.Debugf("sending LAN msg to %v: %#v", raddr, msg)
if _, err := pconn.WriteTo(bufMsg, raddr); err != nil {
lg.Warnf("lan registry send error: %v", err)
}
}
getServiceInfos := func(cmd *cmdLANQuery) {
var serviceInfos []*ServiceInfo
walkProviders := func(prvds *providers, name string) {
ss := strings.Split(name, "_")
for pID, pInfo := range prvds.table {
if time.Since(pInfo.timeStamp) > 10*time.Minute {
delete(prvds.table, pID)
continue
}
svcInfo := &ServiceInfo{Publisher: ss[0], Service: ss[1], ProviderID: pID, Addr: pInfo.addr}
serviceInfos = append(serviceInfos, svcInfo)
}
}
if strings.Contains(cmd.name, "*") {
for name, prvds := range serviceCache {
if wildcardMatch(cmd.name, name) {
walkProviders(prvds, name)
}
}
} else {
if prvds, has := serviceCache[cmd.name]; has {
walkProviders(prvds, cmd.name)
}
}
cmd.chanServiceInfo <- serviceInfos
}
delService := func(name string) {
delete(localServiceTable, name)
prvds, has := serviceCache[name]
if has {
delete(prvds.table, r.s.providerID)
}
}
ticker := time.NewTicker(time.Minute)
defer ticker.Stop()
chanDelay := make(chan *cmdLANQuery, 8)
for {
select {
case <-r.done:
f, err := os.Create(localRecord)
if err == nil {
for name, lsi := range localServiceTable {
fmt.Fprintln(f, name, lsi.port)
}
f.Close()
}
return
case cmd := <-r.cmdChan:
switch cmd := cmd.(type) {
case *cmdLANRegister:
localServiceTable[cmd.name] = &localSvcInfo{time.Now(), cmd.port}
case *cmdLANDelete:
delService(cmd.name)
case *cmdLANQuery:
if err := r.broadcast(&queryInLAN{cmd.name}); err != nil {
lg.Warnf("lan registry send broadcast error: %v", err)
break
}
time.AfterFunc(100*time.Millisecond, func() { chanDelay <- cmd })
default:
lg.Warnf("LAN receiver: unknown cmd: %v", cmd)
}
case cmd := <-chanDelay:
getServiceInfos(cmd)
case <-ticker.C:
t := time.Now()
for name, lsi := range localServiceTable {
if err := pingService("127.0.0.1:" + lsi.port); err != nil {
if t.After(lsi.timeStamp.Add(5 * time.Minute)) {
delService(name)
}
} else {
lsi.timeStamp = t
}
}
case packetMsg := <-packetChan:
msg := packetMsg.msg
raddr := packetMsg.raddr
switch msg := msg.(type) {
case *queryInLAN:
if strings.Contains(msg.name, "*") {
for name, lsi := range localServiceTable {
if wildcardMatch(msg.name, name) {
replyTo(&foundInLAN{name, r.s.providerID, lsi.port}, raddr)
}
}
} else {
lsi, has := localServiceTable[msg.name]
if has {
replyTo(&foundInLAN{msg.name, r.s.providerID, lsi.port}, raddr)
}
}
case *foundInLAN:
rhost, _, _ := net.SplitHostPort(raddr.String())
prvds, has := serviceCache[msg.name]
if !has {
prvds = &providers{table: make(map[string]*providerInfo)}
serviceCache[msg.name] = prvds
}
prvds.table[msg.providerID] = &providerInfo{time.Now(), rhost + ":" + msg.port, false}
default:
lg.Warnf("LAN receiver: unknown msg: %v", msg)
}
}
}
}
func (r *registryLAN) close() {
close(r.done)
r.done = nil
}
func (svc *service) regServiceWAN(port string) error {
c := NewClient(WithScope(ScopeWAN), WithLogger(svc.s.lg))
conn, err := c.newTCPConnection(svc.s.registryAddr)
if err != nil {
return err
}
defer conn.Close()
proxied := false
if svc.providerID != svc.s.providerID {
proxied = true
}
return conn.SendRecv(®ServiceInWAN{svc.publisherName, svc.serviceName, svc.providerID, port, proxied}, nil)
}
func (svc *service) delServiceWAN() error {
c := NewClient(WithScope(ScopeWAN), WithLogger(svc.s.lg))
conn, err := c.newTCPConnection(svc.s.registryAddr)
if err != nil {
return err
}
defer conn.Close()
return conn.Send(&delServiceInWAN{svc.publisherName, svc.serviceName, svc.providerID})
}
// support wildcard
func queryServiceWAN(registryAddr, publisherName, serviceName string, lg Logger) (serviceInfos []*ServiceInfo) {
c := NewClient(WithScope(ScopeWAN), WithLogger(lg))
conn, err := c.newTCPConnection(registryAddr)
if err != nil {
lg.Errorf("connect to registry failed: %v", err)
return
}
defer conn.Close()
conn.SendRecv(&queryServiceInWAN{publisherName, serviceName}, &serviceInfos)
return
}
// support wildcard
func (c *Client) lookupServiceWAN(publisherName, serviceName string, providerIDs ...string) (addrs []string) {
has := func(target string) bool {
if len(providerIDs) == 0 { // match all
return true
}
for _, str := range providerIDs {
if wildcardMatch(str, target) {
return true
}
}
return false
}
serviceInfos := queryServiceWAN(c.registryAddr, publisherName, serviceName, c.lg)
for _, provider := range serviceInfos {
if has(provider.ProviderID) {
addrs = append(addrs, provider.Addr)
}
}
return
}
type providerMap struct {
sync.RWMutex
providers map[string]*providerInfo
}
type rootRegistry struct {
sync.RWMutex
// "publisher_service": {"providerID1":{timeStamp, "192.168.0.11:12345"}, "providerID2":{timeStamp, "192.168.0.26:33556"}}
serviceMap map[string]*providerMap
}
// name: publisher_service, can be wildcard
func (rr *rootRegistry) walkProviders(name string, fn func(service, pID string, pInfo *providerInfo) (remove bool)) {
walkProviderMap := func(service string, pmap *providerMap) {
pmap.RLock()
for pID, pInfo := range pmap.providers {
pmap.RUnlock()
if fn(service, pID, pInfo) {
pmap.Lock()
delete(pmap.providers, pID)
pmap.Unlock()
}
pmap.RLock()
}
pmap.RUnlock()
}
if strings.Contains(name, "*") {
rr.RLock()
for service, pmap := range rr.serviceMap {
rr.RUnlock()
if wildcardMatch(name, service) {
walkProviderMap(service, pmap)
}
rr.RLock()
}
rr.RUnlock()
} else {
rr.RLock()
pmap, has := rr.serviceMap[name]
rr.RUnlock()
if has {
walkProviderMap(name, pmap)
}
}
}
func pingService(addr string) error {
conn, err := net.DialTimeout("tcp", addr, time.Second)
if err != nil {
return ErrServiceNotReachable
}
conn.Close()
return nil
}
// reply OK or error
type testReverseProxy struct {
port string
}
func (msg *testReverseProxy) Handle(stream ContextStream) (reply interface{}) {
ss := stream.(*streamServerStream)
rhost, _, _ := net.SplitHostPort(ss.netconn.RemoteAddr().String())
raddr := rhost + ":" + msg.port
if err := pingService(raddr); err != nil {
return err
}
return OK
}
// reply OK or error
type regServiceInWAN struct {
publisher string
service string
providerID string
port string
proxied bool
}
func (msg *regServiceInWAN) Handle(stream ContextStream) (reply interface{}) {
rr := stream.GetContext().(*rootRegistry)
ss := stream.(*streamServerStream)
rhost, _, _ := net.SplitHostPort(ss.netconn.RemoteAddr().String())
raddr := rhost + ":" + msg.port
if err := pingService(raddr); err != nil {
return err
}
name := msg.publisher + "_" + msg.service
rr.Lock()
pmap, has := rr.serviceMap[name]
if !has {
pmap = &providerMap{
providers: make(map[string]*providerInfo),
}
rr.serviceMap[name] = pmap
}
rr.Unlock()
pinfo := &providerInfo{time.Now(), raddr, msg.proxied}
pmap.Lock()
pmap.providers[msg.providerID] = pinfo
pmap.Unlock()
return OK
}
// no reply
type delServiceInWAN struct {
publisher string
service string
providerID string
}
func (msg *delServiceInWAN) Handle(stream ContextStream) (reply interface{}) {
rr := stream.GetContext().(*rootRegistry)
name := msg.publisher + "_" + msg.service
rr.RLock()
pmap, has := rr.serviceMap[name]
rr.RUnlock()
if !has {
return nil
}
pmap.Lock()
delete(pmap.providers, msg.providerID)
pmap.Unlock()
return nil
}
func makeServiceInfo(service, pID string, pInfo *providerInfo) *ServiceInfo {
addr := pInfo.addr
if pInfo.proxied {
addr += "P"
}
svcInfo := &ServiceInfo{ProviderID: pID, Addr: addr}
if len(service) != 0 {
ss := strings.Split(service, "_")
svcInfo.Publisher = ss[0]
svcInfo.Service = ss[1]
}
return svcInfo
}
// reply []*ServiceInfo
// support wildcard(*) matching
type queryServiceInWAN struct {
publisher string
service string
}
func (msg *queryServiceInWAN) Handle(stream ContextStream) (reply interface{}) {
rr := stream.GetContext().(*rootRegistry)
name := msg.publisher + "_" + msg.service
var serviceInfos []*ServiceInfo
rr.walkProviders(name, func(service, pID string, pInfo *providerInfo) (remove bool) {
serviceInfos = append(serviceInfos, makeServiceInfo(service, pID, pInfo))
return false
})
return serviceInfos
}
func init() {
RegisterType((*regServiceInWAN)(nil))
RegisterType((*delServiceInWAN)(nil))
RegisterType((*queryServiceInWAN)(nil))
RegisterType((*testReverseProxy)(nil))
}
func (s *Server) registryCheckSaver(rr *rootRegistry) {
s.lg.Infof("root registry checksaver running")
for {
time.Sleep(time.Minute)
var serviceInfos []*ServiceInfo
rr.walkProviders("*", func(service, pID string, pInfo *providerInfo) (remove bool) {
t := time.Now()
if err := pingService(pInfo.addr); err != nil {
if t.After(pInfo.timeStamp.Add(15 * time.Minute)) {
s.lg.Infof("removing provider ID %s: %v from service %s", pID, pInfo, service)
return true
}
} else {
// update time stamp if ping succeeded
pInfo.timeStamp = t
}
serviceInfos = append(serviceInfos, makeServiceInfo(service, pID, pInfo))
return false
})
servicesRecord := filepath.Join(asTmpDir, "services.record")
updatingFile := servicesRecord + ".updating"
f, err := os.Create(updatingFile)
if err != nil {
s.lg.Errorf("root registry: record file not created: %v", err)
continue
}
for _, si := range serviceInfos {
fmt.Fprintf(f, "%s %s %s %s\n", si.Publisher, si.Service, si.ProviderID, si.Addr)
}
f.Close()
os.Rename(updatingFile, servicesRecord)
}
}
func (s *Server) startRootRegistry(port string) error {
svc := &service{
publisherName: BuiltinPublisher,
serviceName: "rootRegistry",
providerID: s.providerID,
knownMsgTypes: make(map[reflect.Type]struct{}),
s: s,
}
svc.knownMsgTypes[reflect.TypeOf((*regServiceInWAN)(nil))] = struct{}{}
svc.knownMsgTypes[reflect.TypeOf((*delServiceInWAN)(nil))] = struct{}{}
svc.knownMsgTypes[reflect.TypeOf((*queryServiceInWAN)(nil))] = struct{}{}
svc.knownMsgTypes[reflect.TypeOf((*testReverseProxy)(nil))] = struct{}{}
rr := &rootRegistry{
serviceMap: make(map[string]*providerMap),
}
servicesRecord := filepath.Join(asTmpDir, "services.record")
f, err := os.Open(servicesRecord)
if err == nil {
for {
var publisher, service, providerID, addr string
_, err := fmt.Fscanln(f, &publisher, &service, &providerID, &addr)
if err != nil {
break
}
name := publisher + "_" + service
pmap := rr.serviceMap[name]
if pmap == nil {
pmap = &providerMap{providers: make(map[string]*providerInfo)}
rr.serviceMap[name] = pmap
}
pinfo := &providerInfo{time.Now(), addr, false}
if addr[len(addr)-1] == 'P' {
pinfo.addr = addr[:len(addr)-1]
pinfo.proxied = true
}
pmap.providers[providerID] = pinfo
}
f.Close()
}
svc.fnOnNewStream = func(ctx Context) {
ctx.SetContext(rr)
}
tran, err := svc.newTCPTransport(port)
if err != nil {
return err
}
s.addCloser(tran)
go s.registryCheckSaver(rr)
return nil
}
func init() {
os.MkdirAll(asTmpDir, 0755)
}