micro/server/rpc_stream.go

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package server
import (
"sync"
"golang.org/x/net/context"
)
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// Implements the Streamer interface
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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,
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}
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return r.codec.WriteResponse(&resp, msg, false)
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}
func (r *rpcStream) Recv(msg interface{}) error {
r.Lock()
defer r.Unlock()
req := request{}
if err := r.codec.ReadRequestHeader(&req, false); err != nil {
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// discard body
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r.codec.ReadRequestBody(nil)
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return err
}
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// we need to stay up to date with sequence numbers
r.seq = req.Seq
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return r.codec.ReadRequestBody(msg)
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}
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()
}