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Code Issues Releases Activity

further codec changes

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This commit is contained in:
Asim Aslam
2019-01-08 15:38:25 +00:00
parent 216dbb771a
commit 4cb41721f1
13 changed files with 139 additions and 121 deletions
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66
server/rpc_router.go
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@ -17,6 +17,7 @@ import (
"unicode/utf8"
"github.com/micro/go-log"
"github.com/micro/go-micro/codec"
)
var (
@ -48,16 +49,13 @@ type service struct {
}
type request struct {
ServiceMethod string // format: "Service.Method"
Seq uint64 // sequence number chosen by client
next *request // for free list in Server
msg *codec.Message
next *request // for free list in Server
}
type response struct {
ServiceMethod string // echoes that of the Request
Seq uint64 // echoes that of the request
Error string // error, if any.
next *response // for free list in Server
msg *codec.Message
next *response // for free list in Server
}
// router represents an RPC router.
@ -215,30 +213,34 @@ func (router *router) Handle(h Handler) error {
return nil
}
func (router *router) sendResponse(sending sync.Locker, req *request, reply interface{}, codec serverCodec, errmsg string, last bool) (err error) {
func (router *router) sendResponse(sending sync.Locker, req *request, reply interface{}, cc codec.Codec, errmsg string, last bool) (err error) {
msg := new(codec.Message)
msg.Type = codec.Response
resp := router.getResponse()
resp.msg = msg
// Encode the response header
resp.ServiceMethod = req.ServiceMethod
resp.msg.Method = req.msg.Method
if errmsg != "" {
resp.Error = errmsg
resp.msg.Error = errmsg
reply = invalidRequest
}
resp.Seq = req.Seq
resp.msg.Id = req.msg.Id
sending.Lock()
err = codec.Write(resp, reply, last)
err = cc.Write(resp.msg, reply)
sending.Unlock()
router.freeResponse(resp)
return err
}
func (s *service) call(ctx context.Context, router *router, sending *sync.Mutex, mtype *methodType, req *request, argv, replyv reflect.Value, codec serverCodec, ct string) {
func (s *service) call(ctx context.Context, router *router, sending *sync.Mutex, mtype *methodType, req *request, argv, replyv reflect.Value, codec codec.Codec, ct string) {
function := mtype.method.Func
var returnValues []reflect.Value
r := &rpcRequest{
service: router.name,
contentType: ct,
method: req.ServiceMethod,
method: req.msg.Method,
}
if !mtype.stream {
@ -282,7 +284,7 @@ func (s *service) call(ctx context.Context, router *router, sending *sync.Mutex,
context: ctx,
codec: codec,
request: r,
seq: req.Seq,
id: req.msg.Id,
}
// Invoke the method, providing a new value for the reply.
@ -326,21 +328,21 @@ func (m *methodType) prepareContext(ctx context.Context) reflect.Value {
return reflect.Zero(m.ContextType)
}
func (router *router) ServeRequest(ctx context.Context, codec serverCodec, ct string) error {
func (router *router) ServeRequest(ctx context.Context, cc codec.Codec, ct string) error {
sending := new(sync.Mutex)
service, mtype, req, argv, replyv, keepReading, err := router.readRequest(codec)
service, mtype, req, argv, replyv, keepReading, err := router.readRequest(cc)
if err != nil {
if !keepReading {
return err
}
// send a response if we actually managed to read a header.
if req != nil {
router.sendResponse(sending, req, invalidRequest, codec, err.Error(), true)
router.sendResponse(sending, req, invalidRequest, cc, err.Error(), true)
router.freeRequest(req)
}
return err
}
service.call(ctx, router, sending, mtype, req, argv, replyv, codec, ct)
service.call(ctx, router, sending, mtype, req, argv, replyv, cc, ct)
return nil
}
@ -384,19 +386,19 @@ func (router *router) freeResponse(resp *response) {
router.respLock.Unlock()
}
func (router *router) readRequest(codec serverCodec) (service *service, mtype *methodType, req *request, argv, replyv reflect.Value, keepReading bool, err error) {
service, mtype, req, keepReading, err = router.readHeader(codec)
func (router *router) readRequest(cc codec.Codec) (service *service, mtype *methodType, req *request, argv, replyv reflect.Value, keepReading bool, err error) {
service, mtype, req, keepReading, err = router.readHeader(cc)
if err != nil {
if !keepReading {
return
}
// discard body
codec.ReadBody(nil)
cc.ReadBody(nil)
return
}
// is it a streaming request? then we don't read the body
if mtype.stream {
codec.ReadBody(nil)
cc.ReadBody(nil)
return
}
@ -409,7 +411,7 @@ func (router *router) readRequest(codec serverCodec) (service *service, mtype *m
argIsValue = true
}
// argv guaranteed to be a pointer now.
if err = codec.ReadBody(argv.Interface()); err != nil {
if err = cc.ReadBody(argv.Interface()); err != nil {
return
}
if argIsValue {
@ -422,10 +424,14 @@ func (router *router) readRequest(codec serverCodec) (service *service, mtype *m
return
}
func (router *router) readHeader(codec serverCodec) (service *service, mtype *methodType, req *request, keepReading bool, err error) {
func (router *router) readHeader(cc codec.Codec) (service *service, mtype *methodType, req *request, keepReading bool, err error) {
// Grab the request header.
msg := new(codec.Message)
msg.Type = codec.Request
req = router.getRequest()
err = codec.ReadHeader(req, true)
req.msg = msg
err = cc.ReadHeader(msg, msg.Type)
if err != nil {
req = nil
if err == io.EOF || err == io.ErrUnexpectedEOF {
@ -439,9 +445,9 @@ func (router *router) readHeader(codec serverCodec) (service *service, mtype *me
// we can still recover and move on to the next request.
keepReading = true
serviceMethod := strings.Split(req.ServiceMethod, ".")
serviceMethod := strings.Split(req.msg.Method, ".")
if len(serviceMethod) != 2 {
err = errors.New("rpc: service/method request ill-formed: " + req.ServiceMethod)
err = errors.New("rpc: service/method request ill-formed: " + req.msg.Method)
return
}
// Look up the request.
@ -449,12 +455,12 @@ func (router *router) readHeader(codec serverCodec) (service *service, mtype *me
service = router.serviceMap[serviceMethod[0]]
router.mu.Unlock()
if service == nil {
err = errors.New("rpc: can't find service " + req.ServiceMethod)
err = errors.New("rpc: can't find service " + req.msg.Method)
return
}
mtype = service.method[serviceMethod[1]]
if mtype == nil {
err = errors.New("rpc: can't find method " + req.ServiceMethod)
err = errors.New("rpc: can't find method " + req.msg.Method)
}
return
}