go.uber.org/yarpc@v1.72.1/api/transport/transporttest/echo.go (about)

     1  // Copyright (c) 2022 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package transporttest
    22  
    23  import (
    24  	"context"
    25  	"io"
    26  
    27  	"go.uber.org/yarpc/api/transport"
    28  )
    29  
    30  // EchoRouter is a router that echoes all unary inbound requests, with no
    31  // explicit procedures.
    32  type EchoRouter struct{}
    33  
    34  // Procedures returns no explicitly supported procedures.
    35  func (EchoRouter) Procedures() []transport.Procedure {
    36  	return nil
    37  }
    38  
    39  // Choose always returns a unary echo handler.
    40  func (EchoRouter) Choose(ctx context.Context, req *transport.Request) (transport.HandlerSpec, error) {
    41  	return echoHandlerSpec, nil
    42  }
    43  
    44  // EchoHandler is a unary handler that echoes the request body on the response
    45  // body for any inbound request.
    46  type EchoHandler struct{}
    47  
    48  // Handle handles an inbound request by copying the request body to the
    49  // response body.
    50  func (EchoHandler) Handle(ctx context.Context, req *transport.Request, resw transport.ResponseWriter) error {
    51  	_, err := io.Copy(resw, req.Body)
    52  	return err
    53  }
    54  
    55  var echoHandlerSpec = transport.NewUnaryHandlerSpec(EchoHandler{})