micro/server/rpc_stream.go
2016-04-06 17:53:16 +01:00

80 lines
1.2 KiB
Go

package server
import (
"log"
"sync"
"golang.org/x/net/context"
)
// Implements the Streamer interface
type rpcStream struct {
sync.RWMutex
seq uint64
closed bool
err error
request Request
codec serverCodec
context context.Context
}
func (r *rpcStream) Context() context.Context {
return r.context
}
func (r *rpcStream) Request() Request {
return r.request
}
func (r *rpcStream) Send(msg interface{}) error {
r.Lock()
defer r.Unlock()
resp := response{
ServiceMethod: r.request.Method(),
Seq: r.seq,
}
err := r.codec.WriteResponse(&resp, msg, false)
if err != nil {
log.Println("rpc: writing response:", err)
}
return err
}
func (r *rpcStream) Recv(msg interface{}) error {
r.Lock()
defer r.Unlock()
req := request{}
if err := r.codec.ReadRequestHeader(&req, false); err != nil {
// discard body
r.codec.ReadRequestBody(nil)
return err
}
// we need to stay up to date with sequence numbers
r.seq = req.Seq
if err := r.codec.ReadRequestBody(msg); err != nil {
return err
}
return nil
}
func (r *rpcStream) Error() error {
r.RLock()
defer r.RUnlock()
return r.err
}
func (r *rpcStream) Close() error {
r.Lock()
defer r.Unlock()
r.closed = true
return r.codec.Close()
}