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unix_service.go
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unix_service.go
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/**********************************************************\
| |
| hprose |
| |
| Official WebSite: http://www.hprose.com/ |
| http://www.hprose.org/ |
| |
\**********************************************************/
/**********************************************************\
* *
* hprose/unix_service.go *
* *
* hprose unix service for Go. *
* *
* LastModified: Jul 3, 2015 *
* Authors: Ma Bingyao <andot@hprose.com> *
* Ore_Ash <nanohugh@gmail.com> *
* *
\**********************************************************/
package hprose
import (
"fmt"
"net"
"os"
"os/signal"
"reflect"
"runtime/debug"
)
// UnixService is the hprose unix service
type UnixService StreamService
// UnixContext is the hprose unix context
type UnixContext StreamContext
type unixArgsFixer struct{}
func (unixArgsFixer) FixArgs(args []reflect.Value, lastParamType reflect.Type, context Context) []reflect.Value {
if c, ok := context.(*StreamContext); ok {
if lastParamType.String() == "*hprose.StreamContext" {
return append(args, reflect.ValueOf(c))
} else if lastParamType.String() == "*hprose.UnixContext" {
return append(args, reflect.ValueOf((*UnixContext)(c)))
} else if lastParamType.String() == "net.Conn" {
return append(args, reflect.ValueOf(c.Conn))
}
}
return fixArgs(args, lastParamType, context)
}
// NewUnixService is the constructor of UnixService
func NewUnixService() *UnixService {
service := (*UnixService)(newStreamService())
service.argsfixer = unixArgsFixer{}
return service
}
// ServeUnix ...
func (service *UnixService) ServeUnix(conn *net.UnixConn) (err error) {
if service.readBuffer != nil {
if err = conn.SetReadBuffer(service.readBuffer.(int)); err != nil {
return err
}
}
if service.writeBuffer != nil {
if err = conn.SetWriteBuffer(service.writeBuffer.(int)); err != nil {
return err
}
}
return ((*StreamService)(service)).Serve(conn)
}
// UnixServer is a hprose unix server
type UnixServer struct {
*UnixService
URL string
listener *net.UnixListener
signal chan os.Signal
}
// NewUnixServer is a constructor for UnixServer
func NewUnixServer(uri string) (server *UnixServer) {
if uri == "" {
uri = "unix:/tmp/hprose.sock"
}
server = new(UnixServer)
server.UnixService = NewUnixService()
server.URL = uri
return
}
func (server *UnixServer) handle() (err error) {
defer func() {
if e := recover(); e != nil && err == nil {
if server.DebugEnabled {
err = fmt.Errorf("%v\r\n%s", e, debug.Stack())
} else {
err = fmt.Errorf("%v", e)
}
}
}()
if server.listener == nil {
return nil
}
var conn *net.UnixConn
if conn, err = server.listener.AcceptUnix(); err != nil {
return err
}
return server.ServeUnix(conn)
}
func (server *UnixServer) start() {
for {
if server.listener != nil {
if err := server.handle(); err != nil {
server.fireErrorEvent(err, nil)
}
} else {
break
}
}
}
// Handle the hprose unix server
func (server *UnixServer) Handle() (err error) {
if server.listener == nil {
scheme, path := parseUnixUri(server.URL)
var addr *net.UnixAddr
if addr, err = net.ResolveUnixAddr(scheme, path); err != nil {
return err
}
if server.listener, err = net.ListenUnix(scheme, addr); err != nil {
return err
}
server.URL = scheme + ":" + server.listener.Addr().String()
go server.start()
}
return nil
}
// Start the hprose unix server
func (server *UnixServer) Start() (err error) {
if server.listener == nil {
server.Handle()
server.signal = make(chan os.Signal, 1)
signal.Notify(server.signal, os.Interrupt, os.Kill)
<-server.signal
server.Stop()
}
return nil
}
// Stop the hprose unix server
func (server *UnixServer) Stop() {
if server.signal != nil {
signal.Stop(server.signal)
server.signal = nil
}
if server.listener != nil {
listener := server.listener
server.listener = nil
listener.Close()
}
}