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November 20, 2020 09:35
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gokit-grpc-demo transports/grpc.go
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package transport | |
import ( | |
"context" | |
"github.com/go-kit/kit/log" | |
gt "github.com/go-kit/kit/transport/grpc" | |
"github.com/junereycasuga/gokit-grpc-demo/endpoints" | |
"github.com/junereycasuga/gokit-grpc-demo/pb" | |
) | |
type gRPCServer struct { | |
add gt.Handler | |
} | |
// NewGRPCServer initializes a new gRPC server | |
func NewGRPCServer(endpoints endpoints.Endpoints, logger log.Logger) pb.MathServiceServer { | |
return &gRPCServer{ | |
add: gt.NewServer( | |
endpoints.Add, | |
decodeMathRequest, | |
encodeMathResponse, | |
), | |
} | |
} | |
func (s *gRPCServer) Add(ctx context.Context, req *pb.MathRequest) (*pb.MathResponse, error) { | |
_, resp, err := s.add.ServeGRPC(ctx, req) | |
if err != nil { | |
return nil, err | |
} | |
return resp.(*pb.MathResponse), nil | |
} | |
func decodeMathRequest(_ context.Context, request interface{}) (interface{}, error) { | |
req := request.(*pb.MathRequest) | |
return endpoints.MathReq{NumA: req.NumA, NumB: req.NumB}, nil | |
} | |
func encodeMathResponse(_ context.Context, response interface{}) (interface{}, error) { | |
resp := response.(endpoints.MathResp) | |
return &pb.MathResponse{Result: resp.Result}, nil | |
} |
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