100 lines
1.6 KiB
Go
100 lines
1.6 KiB
Go
package server
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import (
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"context"
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"errors"
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"io"
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"sync"
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"github.com/micro/go-micro/codec"
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)
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// Implements the Streamer interface
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type rpcStream struct {
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sync.RWMutex
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id string
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closed bool
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err error
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request Request
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codec codec.Codec
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context context.Context
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}
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func (r *rpcStream) Context() context.Context {
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return r.context
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}
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func (r *rpcStream) Request() Request {
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return r.request
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}
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func (r *rpcStream) Send(msg interface{}) error {
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r.Lock()
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defer r.Unlock()
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resp := codec.Message{
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Target: r.request.Service(),
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Method: r.request.Method(),
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Endpoint: r.request.Endpoint(),
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Id: r.id,
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Type: codec.Response,
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}
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if err := r.codec.Write(&resp, msg); err != nil {
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r.err = err
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}
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return nil
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}
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func (r *rpcStream) Recv(msg interface{}) error {
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r.Lock()
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defer r.Unlock()
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req := new(codec.Message)
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req.Type = codec.Request
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if err := r.codec.ReadHeader(req, req.Type); err != nil {
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// discard body
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r.codec.ReadBody(nil)
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r.err = err
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return err
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}
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// check the error
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if len(req.Error) > 0 {
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// Check the client closed the stream
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switch req.Error {
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case lastStreamResponseError.Error():
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// discard body
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r.codec.ReadBody(nil)
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r.err = io.EOF
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return io.EOF
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default:
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return errors.New(req.Error)
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}
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}
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// we need to stay up to date with sequence numbers
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r.id = req.Id
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if err := r.codec.ReadBody(msg); err != nil {
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r.err = err
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return err
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}
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return nil
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}
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func (r *rpcStream) Error() error {
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r.RLock()
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defer r.RUnlock()
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return r.err
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}
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func (r *rpcStream) Close() error {
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r.Lock()
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defer r.Unlock()
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r.closed = true
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return r.codec.Close()
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}
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