50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package response
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import (
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"context"
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"github.com/nspcc-dev/neofs-node/pkg/services/util"
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"github.com/pkg/errors"
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)
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// ServerMessageStreamer represents server-side message streamer
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// that sets meta values to all response messages.
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type ServerMessageStreamer struct {
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cfg *cfg
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recv util.ResponseMessageReader
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}
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// Recv calls Recv method of internal streamer, sets response meta
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// values and returns the response.
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func (s *ServerMessageStreamer) Recv() (util.ResponseMessage, error) {
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m, err := s.recv()
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if err != nil {
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return nil, errors.Wrap(err, "could not receive response message for signing")
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}
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setMeta(m, s.cfg)
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return m, nil
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}
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// HandleServerStreamRequest builds internal streamer via handlers, wraps it to ServerMessageStreamer and returns the result.
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func (s *Service) HandleServerStreamRequest(ctx context.Context, req interface{}, handler util.ServerStreamHandler) (*ServerMessageStreamer, error) {
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msgRdr, err := handler(ctx, req)
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if err != nil {
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return nil, errors.Wrap(err, "could not create message reader")
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}
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return &ServerMessageStreamer{
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cfg: s.cfg,
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recv: msgRdr,
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}, nil
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}
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func (s *Service) HandleServerStreamRequest_(respWriter util.ResponseMessageWriter) util.ResponseMessageWriter {
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return func(resp util.ResponseMessage) error {
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setMeta(resp, s.cfg)
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return respWriter(resp)
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}
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}
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