enhancing logging. code broken
This commit is contained in:
parent
afb3ad33af
commit
30f997d8e8
11
README.md
11
README.md
@ -1,9 +1,7 @@
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hodu client <servee> <peer1> [<peer2> ...]
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client requests server that it grants access to the list of peers
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reserver
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## normal operation
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- ./hodu server --listen-on=0.0.0.0:9999 --listen-on=0.0.0.0:8888
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- ./hodu client --listen-on=127.0.0.1:7777 --server=127.0.0.1:9999 192.168.1.130:8000
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## server.json
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```
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@ -16,7 +14,8 @@ hodu client <servee> <peer1> [<peer2> ...]
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}
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```
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## create a server
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## client control channel
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```
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curl -X POST --data-binary @server.json http://127.0.0.1:7777/servers
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```
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35
client.go
35
client.go
@ -47,6 +47,8 @@ type Client struct {
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wg sync.WaitGroup
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stop_req atomic.Bool
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stop_chan chan bool
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log Logger
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}
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type ClientPeerConn struct {
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@ -143,7 +145,7 @@ func NewClientRoute(cts *ServerConn, id uint32, addr *net.TCPAddr, proto ROUTE_P
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r.stop_req.Store(false)
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r.stop_chan = make(chan bool, 1)
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return &r;
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return &r
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}
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func (r *ClientRoute) RunTask(wg *sync.WaitGroup) {
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@ -172,7 +174,7 @@ func (r *ClientRoute) ReqStop() {
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r.stop_chan <- true
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}
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fmt.Printf ("*** Sent stop request to Route..\n");
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fmt.Printf ("*** Sent stop request to Route..\n")
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}
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func (r* ClientRoute) ConnectToPeer(pts_id uint32, wg *sync.WaitGroup) {
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@ -195,7 +197,7 @@ func (r* ClientRoute) ConnectToPeer(pts_id uint32, wg *sync.WaitGroup) {
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r.ptc_mtx.Unlock()
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d.LocalAddr = nil // TOOD: use this if local address is specified
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conn, err = d.DialContext(ctx, "tcp", r.peer_addr.String());
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conn, err = d.DialContext(ctx, "tcp", r.peer_addr.String())
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r.ptc_mtx.Lock()
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delete(r.ptc_cancel_map, pts_id)
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@ -373,7 +375,7 @@ func (cts *ServerConn) RemoveClientRoute (route_id uint32) error {
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cts.route_mtx.Unlock()
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r.ReqStop() // TODO: make this unblocking or blocking?
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return nil;
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return nil
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}
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func (cts *ServerConn) RemoveClientRoutes () {
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@ -402,7 +404,7 @@ func (cts *ServerConn) AddClientRoutes (peer_addrs []string) error {
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var err error
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for i, v = range peer_addrs {
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addr, err = net.ResolveTCPAddr(NET_TYPE_TCP, v)
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addr, err = net.ResolveTCPAddr(NET_TYPE_TCP, v) // Make this interruptable
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if err != nil {
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return fmt.Errorf("unable to resovle %s - %s", v, err.Error())
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}
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@ -426,7 +428,7 @@ func (cts *ServerConn) AddClientRoutes (peer_addrs []string) error {
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}
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}
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return nil;
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return nil
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}
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func (cts *ServerConn) ReqStop() {
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@ -442,7 +444,7 @@ func (cts *ServerConn) ReqStop() {
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// TODO: notify the server.. send term command???
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cts.stop_chan <- true
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}
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fmt.Printf ("*** Sent stop request to ServerConn..\n");
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fmt.Printf ("*** Sent stop request to ServerConn..\n")
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}
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func (cts *ServerConn) RunTask(wg *sync.WaitGroup) {
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@ -534,7 +536,7 @@ fmt.Printf("[%v]\n", cts.route_map)
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var ok bool
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x, ok = pkt.U.(*Packet_Route)
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if ok {
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fmt.Printf ("SERVER LISTENING ON %s\n", x.Route.AddrStr);
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fmt.Printf ("SERVER LISTENING ON %s\n", x.Route.AddrStr)
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err = cts.ReportEvent(x.Route.RouteId, 0, pkt.Kind, nil)
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if err != nil {
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// TODO:
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@ -712,7 +714,7 @@ func (r *ClientRoute) AddNewClientPeerConn (c *net.TCPConn, pts_id uint32) (*Cli
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// --------------------------------------------------------------------
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func NewClient(ctx context.Context, listen_on string, tlscfg *tls.Config) *Client {
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func NewClient(ctx context.Context, listen_on string, logger Logger, tlscfg *tls.Config) *Client {
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var c Client
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c.ctx, c.ctx_cancel = context.WithCancel(ctx)
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@ -721,6 +723,7 @@ func NewClient(ctx context.Context, listen_on string, tlscfg *tls.Config) *Clien
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c.cts_map = make(ServerConnMap) // TODO: make it configurable...
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c.stop_req.Store(false)
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c.stop_chan = make(chan bool, 1)
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c.log = logger
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c.ctl = &http.Server{
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Addr: listen_on,
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@ -744,15 +747,15 @@ func (c *Client) AddNewServerConn(addr *net.TCPAddr, cfg *ClientConfig) (*Server
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return nil, fmt.Errorf("existing server - %s", addr.String())
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}
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c.cts_map[addr] = cts;
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fmt.Printf ("ADD total servers %d\n", len(c.cts_map));
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c.cts_map[addr] = cts
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fmt.Printf ("ADD total servers %d\n", len(c.cts_map))
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return cts, nil
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}
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func (c *Client) RemoveServerConn(cts *ServerConn) {
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c.cts_mtx.Lock()
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delete(c.cts_map, cts.saddr)
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fmt.Printf ("REMOVE total servers %d\n", len(c.cts_map));
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fmt.Printf ("REMOVE total servers %d\n", len(c.cts_map))
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c.cts_mtx.Unlock()
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}
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@ -770,7 +773,7 @@ func (c *Client) ReqStop() {
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c.stop_chan <- true
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c.ctx_cancel()
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}
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fmt.Printf ("*** Sent stop request to client..\n");
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fmt.Printf ("*** Sent stop request to client..\n")
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}
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func (c *Client) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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@ -866,7 +869,7 @@ func (c *Client) StartService(data interface{}) {
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return
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}
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saddr, err = net.ResolveTCPAddr(NET_TYPE_TCP, cfg.ServerAddr)
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saddr, err = net.ResolveTCPAddr(NET_TYPE_TCP, cfg.ServerAddr) // TODO: make this interruptable...
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if err != nil {
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fmt.Printf("unable to resolve %s - %s", cfg.ServerAddr, err.Error())
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return
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@ -899,3 +902,7 @@ func (c *Client) StopServices() {
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func (c *Client) WaitForTermination() {
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c.wg.Wait()
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}
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func (c *Client) WriteLog (id string, level LogLevel, fmt string, args ...interface{}) {
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c.log.Write(id, level, fmt, args...)
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}
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27
cmd/main.go
27
cmd/main.go
@ -47,12 +47,10 @@ type serverLogger struct {
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log *log.Logger
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}
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func (log* serverLogger) Write(level hodu.LogLevel, fmt string, args ...interface{}) {
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func (log* serverLogger) Write(id string, level hodu.LogLevel, fmt string, args ...interface{}) {
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log.log.Printf(fmt, args...)
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}
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// --------------------------------------------------------------------
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type signal_handler struct {
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svc hodu.Service
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@ -63,7 +61,9 @@ func (sh *signal_handler) RunTask(wg *sync.WaitGroup) {
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var sigterm_chan chan os.Signal
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var sig os.Signal
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if wg != nil {
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defer wg.Done()
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}
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sighup_chan = make(chan os.Signal, 1)
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sigterm_chan = make(chan os.Signal, 1)
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@ -76,12 +76,9 @@ chan_loop:
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select {
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case <-sighup_chan:
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// TODO:
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//svc.ReqReload()
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//sh.svc.ReqReload()
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case sig = <-sigterm_chan:
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// TODO: get timeout value from config
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//c.Shutdown(fmt.Sprintf("termination by signal %s", sig), 3*time.Second)
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sh.svc.StopServices()
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//log.Debugf("termination by signal %s", sig)
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fmt.Printf("termination by signal %s\n", sig)
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break chan_loop
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}
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@ -91,7 +88,6 @@ fmt.Printf("termination by signal %s\n", sig)
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//signal.Reset(syscall.SIGTERM)
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signal.Stop(sighup_chan)
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signal.Stop(sigterm_chan)
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fmt.Printf("end of signal handler\n")
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}
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func (sh *signal_handler) StartService(data interface{}) {
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@ -111,11 +107,13 @@ func (sh *signal_handler) WaitForTermination() {
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// sh.wg.Wait()
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}
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func (sh *signal_handler) WriteLog(id string, level hodu.LogLevel, fmt string, args ...interface{}) {
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sh.svc.WriteLog(id, level, fmt, args...)
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}
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func server_main(laddrs []string) error {
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var s *hodu.Server
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var err error
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var sl serverLogger
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var cert tls.Certificate
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cert, err = tls.X509KeyPair([]byte(rootCert), []byte(rootKey))
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@ -123,8 +121,7 @@ func server_main(laddrs []string) error {
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return fmt.Errorf("ERROR: failed to load key pair - %s\n", err)
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}
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sl.log = log.Default()
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s, err = hodu.NewServer(laddrs, &sl, &tls.Config{Certificates: []tls.Certificate{cert}})
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s, err = hodu.NewServer(laddrs, &serverLogger{log: log.Default}, &tls.Config{Certificates: []tls.Certificate{cert}})
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if err != nil {
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return fmt.Errorf("ERROR: failed to create new server - %s", err.Error())
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}
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@ -155,14 +152,14 @@ func client_main(listen_on string, server_addr string, peer_addrs []string) erro
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InsecureSkipVerify: true,
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}
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c = hodu.NewClient(context.Background(), listen_on, tlscfg)
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c = hodu.NewClient(context.Background(), listen_on, &serverLogger{log: log.Default}, tlscfg)
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cc.ServerAddr = server_addr
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cc.PeerAddrs = peer_addrs
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c.StartService(&cc)
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c.StartCtlService()
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c.StartExtService(&signal_handler{svc:c}, nil)
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c.StartCtlService() // control channel
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c.StartExtService(&signal_handler{svc:c}, nil) // signal handler task
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c.WaitForTermination()
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return nil
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7
hodu.go
7
hodu.go
@ -14,14 +14,13 @@ const (
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)
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type Logger interface {
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Write (level LogLevel, fmt string, args ...interface{})
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Write (id string, level LogLevel, fmt string, args ...interface{})
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}
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type Service interface {
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RunTask (wg *sync.WaitGroup) // blocking. run the actual task loop
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RunTask (wg *sync.WaitGroup) // blocking. run the actual task loop. it must call wg.Done() upon exit from itself.
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StartService(data interface{}) // non-blocking. spin up a service. it may be invokded multiple times for multiple instances
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StopServices() // non-blocking. send stop request to all services spun up
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WaitForTermination() // blocking. must wait until all services are stopped
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WriteLog(id string, level LogLevel, fmt string, args ...interface{})
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}
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type ExtTask func(svc Service, wg *sync.WaitGroup)
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@ -102,7 +102,7 @@ wait_for_started:
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if err != nil {
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// TODO: include route id and conn id in the error message
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fmt.Printf("unable to send data - %s\n", err.Error())
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goto done;
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goto done
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}
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}
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56
server.go
56
server.go
@ -110,7 +110,7 @@ func NewServerRoute(cts *ClientConn, id uint32, proto ROUTE_PROTO) (*ServerRoute
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var laddr *net.TCPAddr
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var err error
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l, laddr, err = cts.make_route_listener(proto);
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l, laddr, err = cts.make_route_listener(proto)
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if err != nil {
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return nil, err
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}
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@ -124,7 +124,7 @@ func NewServerRoute(cts *ClientConn, id uint32, proto ROUTE_PROTO) (*ServerRoute
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r.pts_last_id = 0
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r.stop_req.Store(false)
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return &r, nil;
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return &r, nil
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}
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func (r *ServerRoute) AddNewServerPeerConn(c *net.TCPConn) (*ServerPeerConn, error) {
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@ -163,7 +163,7 @@ func (r *ServerRoute) RemoveServerPeerConn(pts *ServerPeerConn) {
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r.pts_mtx.Lock()
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delete(r.pts_map, pts.conn_id)
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r.pts_mtx.Unlock()
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r.cts.svr.log.Write(LOG_DEBUG, "Removed server-side peer connection %s", pts.conn.RemoteAddr().String())
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r.cts.svr.log.Write("", LOG_DEBUG, "Removed server-side peer connection %s", pts.conn.RemoteAddr().String())
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}
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func (r *ServerRoute) RunTask(wg *sync.WaitGroup) {
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@ -177,7 +177,7 @@ func (r *ServerRoute) RunTask(wg *sync.WaitGroup) {
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conn, err = r.l.AcceptTCP()
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if err != nil {
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if errors.Is(err, net.ErrClosed) {
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r.cts.svr.log.Write(LOG_INFO, "[%s,%d] Service-side peer listener closed\n", r.cts.caddr.String(), r.id)
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r.cts.svr.log.Write("", LOG_INFO, "[%s,%d] Service-side peer listener closed\n", r.cts.caddr.String(), r.id)
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} else {
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fmt.Printf("[%s,%d] Server-side peer listener error - %s\n", r.cts.caddr.String(), r.id, err.Error())
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}
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@ -186,10 +186,10 @@ func (r *ServerRoute) RunTask(wg *sync.WaitGroup) {
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pts, err = r.AddNewServerPeerConn(conn)
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if err != nil {
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r.cts.svr.log.Write(LOG_ERROR, "[%s,%d] Failed to add new server-side peer %s - %s", r.cts.caddr.String(), r.id, conn.RemoteAddr().String(), err.Error())
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r.cts.svr.log.Write("", LOG_ERROR, "[%s,%d] Failed to add new server-side peer %s - %s", r.cts.caddr.String(), r.id, conn.RemoteAddr().String(), err.Error())
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conn.Close()
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} else {
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r.cts.svr.log.Write(LOG_DEBUG, "[%s,%d] Added new server-side peer %s", r.cts.caddr.String(), r.id, conn.RemoteAddr().String())
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r.cts.svr.log.Write("", LOG_DEBUG, "[%s,%d] Added new server-side peer %s", r.cts.caddr.String(), r.id, conn.RemoteAddr().String())
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r.pts_wg.Add(1)
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go pts.RunTask(&r.pts_wg)
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}
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@ -197,7 +197,7 @@ func (r *ServerRoute) RunTask(wg *sync.WaitGroup) {
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r.l.Close() // don't care about double close. it could have been closed in ReqStop
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r.pts_wg.Wait()
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r.cts.svr.log.Write(LOG_DEBUG, "[%s,%d] All service-side peer handlers completed", r.cts.caddr.String(), r.id)
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r.cts.svr.log.Write("", LOG_DEBUG, "[%s,%d] All service-side peer handlers completed", r.cts.caddr.String(), r.id)
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}
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func (r *ServerRoute) ReqStop() {
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@ -210,7 +210,7 @@ func (r *ServerRoute) ReqStop() {
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pts.ReqStop()
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}
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r.l.Close();
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r.l.Close()
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}
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fmt.Printf ("requiested to stopp route taak..\n")
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}
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@ -222,10 +222,10 @@ func (r *ServerRoute) ReportEvent (pts_id uint32, event_type PACKET_KIND, event_
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r.pts_mtx.Lock()
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spc, ok = r.pts_map[pts_id]
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if !ok {
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r.pts_mtx.Unlock();
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r.pts_mtx.Unlock()
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return fmt.Errorf("non-existent peer id - %u", pts_id)
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}
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r.pts_mtx.Unlock();
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r.pts_mtx.Unlock()
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return spc.ReportEvent(event_type, event_data)
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}
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@ -285,7 +285,7 @@ func (cts *ClientConn) AddNewServerRoute(route_id uint32, proto ROUTE_PROTO) (*S
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cts.route_mtx.Unlock()
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return nil, err
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}
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cts.route_map[route_id] = r;
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cts.route_map[route_id] = r
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cts.route_mtx.Unlock()
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cts.route_wg.Add(1)
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@ -307,7 +307,7 @@ func (cts *ClientConn) RemoveServerRoute (route_id uint32) error {
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cts.route_mtx.Unlock()
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r.ReqStop() // TODO: make this unblocking or blocking?
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return nil;
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return nil
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}
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func (cts *ClientConn) ReportEvent (route_id uint32, pts_id uint32, event_type PACKET_KIND, event_data []byte) error {
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@ -372,7 +372,7 @@ fmt.Printf ("grpd stream ended\n")
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var ok bool
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x, ok = pkt.U.(*Packet_Route)
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if ok {
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err = cts.RemoveServerRoute(x.Route.RouteId); // TODO: this must be unblocking. otherwide, other route_map will get blocked...
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err = cts.RemoveServerRoute(x.Route.RouteId) // TODO: this must be unblocking. otherwide, other route_map will get blocked...
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if err != nil {
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// TODO: Send Error Response...
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} else {
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@ -557,7 +557,7 @@ func (cc *ConnCatcher) HandleRPC(ctx context.Context, s stats.RPCStats) {
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}
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func (cc *ConnCatcher) TagConn(ctx context.Context, info *stats.ConnTagInfo) context.Context {
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return ctx;
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return ctx
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//return context.TODO()
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}
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@ -583,7 +583,7 @@ if ok {
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fmt.Printf("**** client connected - [%s]\n", addr)
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case *stats.ConnEnd:
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fmt.Printf("**** client disconnected - [%s]\n", addr)
|
||||
cc.server.RemoveClientConnByAddr(p.Addr);
|
||||
cc.server.RemoveClientConnByAddr(p.Addr)
|
||||
}
|
||||
}
|
||||
|
||||
@ -661,7 +661,7 @@ func NewServer(laddrs []string, logger Logger, tlscfg *tls.Config) (*Server, err
|
||||
/* create the specified number of listeners */
|
||||
s.l = make([]*net.TCPListener, 0)
|
||||
for _, addr = range laddrs {
|
||||
laddr, err = net.ResolveTCPAddr(NET_TYPE_TCP, addr)
|
||||
laddr, err = net.ResolveTCPAddr(NET_TYPE_TCP, addr) // Make this interruptable???
|
||||
if err != nil {
|
||||
goto oops
|
||||
}
|
||||
@ -711,17 +711,17 @@ func (s *Server) run_grpc_server(idx int, wg *sync.WaitGroup) error {
|
||||
var l *net.TCPListener
|
||||
var err error
|
||||
|
||||
defer wg.Done();
|
||||
defer wg.Done()
|
||||
|
||||
l = s.l[idx]
|
||||
// it seems to be safe to call a single grpc server on differnt listening sockets multiple times
|
||||
s.log.Write (LOG_ERROR, "Starting GRPC server listening on %s", l.Addr().String())
|
||||
err = s.gs.Serve(l);
|
||||
s.log.Write ("", LOG_ERROR, "Starting GRPC server listening on %s", l.Addr().String())
|
||||
err = s.gs.Serve(l)
|
||||
if err != nil {
|
||||
if errors.Is(err, net.ErrClosed) {
|
||||
s.log.Write (LOG_ERROR, "GRPC server listening on %s closed", l.Addr().String())
|
||||
s.log.Write ("", LOG_ERROR, "GRPC server listening on %s closed", l.Addr().String())
|
||||
} else {
|
||||
s.log.Write (LOG_ERROR, "Error from GRPC server listening on %s - %s", l.Addr().String(), err.Error())
|
||||
s.log.Write ("", LOG_ERROR, "Error from GRPC server listening on %s - %s", l.Addr().String(), err.Error())
|
||||
}
|
||||
return err
|
||||
}
|
||||
@ -740,9 +740,9 @@ func (s *Server) RunTask(wg *sync.WaitGroup) {
|
||||
}
|
||||
|
||||
s.l_wg.Wait()
|
||||
s.log.Write(LOG_DEBUG, "All GRPC listeners completed")
|
||||
s.log.Write("", LOG_DEBUG, "", "All GRPC listeners completed")
|
||||
s.cts_wg.Wait()
|
||||
s.log.Write(LOG_DEBUG, "All CTS handlers completed")
|
||||
s.log.Write("", LOG_DEBUG, "", "All CTS handlers completed")
|
||||
|
||||
s.ReqStop()
|
||||
|
||||
@ -801,15 +801,15 @@ func (s *Server) AddNewClientConn(addr net.Addr, pss Hodu_PacketStreamServer) (*
|
||||
if ok {
|
||||
return nil, fmt.Errorf("existing client - %s", addr.String())
|
||||
}
|
||||
s.cts_map[addr] = &cts;
|
||||
s.log.Write(LOG_DEBUG, "Added client connection from %s", addr.String())
|
||||
s.cts_map[addr] = &cts
|
||||
s.log.Write("", LOG_DEBUG, "Added client connection from %s", addr.String())
|
||||
return &cts, nil
|
||||
}
|
||||
|
||||
func (s *Server) RemoveClientConn(cts *ClientConn) {
|
||||
s.cts_mtx.Lock()
|
||||
delete(s.cts_map, cts.caddr)
|
||||
s.log.Write(LOG_DEBUG, "Removed client connection from %s", cts.caddr.String())
|
||||
s.log.Write("", LOG_DEBUG, "Removed client connection from %s", cts.caddr.String())
|
||||
s.cts_mtx.Unlock()
|
||||
}
|
||||
|
||||
@ -864,3 +864,7 @@ func (s *Server) StopServices() {
|
||||
func (s *Server) WaitForTermination() {
|
||||
s.wg.Wait()
|
||||
}
|
||||
|
||||
func (s *Server) WriteLog (id string, level LogLevel, fmt string, args ...interface{}) {
|
||||
s.log.Write(id, level, fmt, args...)
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user