/
rpc_server.go
139 lines (111 loc) · 2.96 KB
/
rpc_server.go
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/**
* Copyright 2018 gd Author. All Rights Reserved.
* Author: Chuck1024
*/
package dogrpc
import (
"crypto/tls"
"crypto/x509"
"errors"
"fmt"
"github.com/chuck1024/gd/dlog"
"io/ioutil"
"net"
"strconv"
)
/*
* default rpc server
*/
type RpcHandlerFunc func([]byte) (uint32, []byte)
type RpcServer struct {
Addr int `inject:"rpcHost"`
ss *Server
defaultHandler map[uint32]RpcHandlerFunc
wrapHandler map[uint32]interface{}
UseTls bool `inject:"rpcUseTls" canNil:"true"`
RpcCaPemFile string `inject:"rpcCaPemFile" canNil:"true"`
RpcServerKeyFile string `inject:"rpcServerKeyFile" canNil:"true"`
RpcServerPemFile string `inject:"rpcServerPemFile" canNil:"true"`
}
func NewRpcServer() *RpcServer {
s := &RpcServer{
defaultHandler: make(map[uint32]RpcHandlerFunc),
}
s.ss = &Server{
Handler: s.dispatchPacket,
}
return s
}
func (s *RpcServer) Start() error {
s.ss.Addr = fmt.Sprintf(":%d", s.Addr)
if s.UseTls {
if s.RpcCaPemFile == "" {
s.RpcCaPemFile = "conf/ca.pem"
}
if s.RpcServerKeyFile == "" {
s.RpcServerKeyFile = "conf/server.key"
}
if s.RpcServerPemFile == "" {
s.RpcServerPemFile = "conf/server.pem"
}
cert, err := tls.LoadX509KeyPair(s.RpcServerPemFile, s.RpcServerKeyFile)
if err != nil {
dlog.Crashf("Cannot load TLS certificates: [%s]", err)
}
certPool := x509.NewCertPool()
ca, err := ioutil.ReadFile(s.RpcCaPemFile)
if err != nil {
return err
}
if !certPool.AppendCertsFromPEM(ca) {
return errors.New("certPool.AppendCertsFromPEM err")
}
serverCfg := &tls.Config{
Certificates: []tls.Certificate{cert},
ClientAuth: tls.RequireAndVerifyClientCert,
ClientCAs: certPool,
}
s.ss.Listener = &netListener{
F: func(addr string) (net.Listener, error) {
return tls.Listen("tcp", addr, serverCfg)
},
}
}
err := s.ss.Serve()
if err != nil {
dlog.Error("dog Start occur error:%s", err.Error())
return err
}
return nil
}
func (s *RpcServer) Close() {
s.ss.Stop()
}
func (s *RpcServer) AddHandler(headCmd uint32, f RpcHandlerFunc) {
if s.defaultHandler == nil {
s.defaultHandler = make(map[uint32]RpcHandlerFunc)
}
if _, ok := s.defaultHandler[headCmd]; ok {
dlog.Warn("add handler head cmd [%d] already registered.", headCmd)
return
}
s.defaultHandler[headCmd] = f
dlog.Info("register head cmd [%d] success.", headCmd)
}
func (s *RpcServer) dispatchPacket(clientAddr string, req Packet) (rsp Packet) {
packet := req.(*RpcPacket)
headCmd := packet.Cmd
f, ok := s.defaultHandler[headCmd]
if !ok {
dlog.Error("dispatch packet head cmd %d not register handler!", headCmd)
return NewRpcPacketWithRet(headCmd, []byte(""), packet.Seq, uint32(InvalidParam.Code()))
}
code, body := globalFilter.Handle(&Context{
ClientAddr: clientAddr,
Seq: packet.Seq,
Method: strconv.Itoa(int(headCmd)),
Handler: f,
Req: req.(*RpcPacket).Body,
})
return NewRpcPacketWithRet(packet.Cmd, body, packet.Seq, code)
}