func (c *client) Call(ctx Context, serviceName, methodName string, req, resp thrift.TStruct) (bool, error) {
call, err := c.sc.BeginCall(ctx, serviceName+"::"+methodName, &tchannel.CallOptions{Format: tchannel.Thrift})
if err != nil {
return false, err
}
writer, err := call.Arg2Writer()
if err != nil {
return false, err
}
if err := writeHeaders(writer, ctx.Headers()); err != nil {
return false, err
}
if err := writer.Close(); err != nil {
return false, err
}
writer, err = call.Arg3Writer()
if err != nil {
return false, err
}
protocol := thrift.NewTBinaryProtocolTransport(&readWriterTransport{Writer: writer})
if err := req.Write(protocol); err != nil {
return false, err
}
if err := writer.Close(); err != nil {
return false, err
}
reader, err := call.Response().Arg2Reader()
if err != nil {
return false, err
}
headers, err := readHeaders(reader)
if err != nil {
return false, err
}
ctx.SetResponseHeaders(headers)
if err := reader.Close(); err != nil {
return false, err
}
success := !call.Response().ApplicationError()
reader, err = call.Response().Arg3Reader()
if err != nil {
return success, err
}
protocol = thrift.NewTBinaryProtocolTransport(&readWriterTransport{Reader: reader})
if err := resp.Read(protocol); err != nil {
return success, err
}
if err := reader.Close(); err != nil {
return success, err
}
return success, nil
}
// readResponse reads the response struct into resp, and returns:
// (response headers, whether there was an application error, unexpected error).
func readResponse(response *tchannel.OutboundCallResponse, resp thrift.TStruct) (map[string]string, bool, error) {
reader, err := response.Arg2Reader()
if err != nil {
return nil, false, err
}
headers, err := readHeaders(reader)
if err != nil {
return nil, false, err
}
if err := reader.Close(); err != nil {
return nil, false, err
}
success := !response.ApplicationError()
reader, err = response.Arg3Reader()
if err != nil {
return headers, success, err
}
wp := getProtocolReader(reader)
if err := resp.Read(wp.protocol); err != nil {
thriftProtocolPool.Put(wp)
return headers, success, err
}
thriftProtocolPool.Put(wp)
return headers, success, reader.Close()
}
// DeserializeThrift takes a byte slice and attempts to write it into the
// given thrift struct using the thrift binary protocol. This is a temporary
// measure before frames can be forwarded directly past the endpoint to the proper
// destinaiton.
func DeserializeThrift(b []byte, s athrift.TStruct) error {
reader := bytes.NewReader(b)
transport := athrift.NewStreamTransportR(reader)
return s.Read(athrift.NewTBinaryProtocolTransport(transport))
}
// ReadStruct reads the given Thrift struct. It pools TProtocols.
func ReadStruct(reader io.Reader, s thrift.TStruct) error {
wp := getProtocolReader(reader)
err := s.Read(wp.protocol)
thriftProtocolPool.Put(wp)
return err
}
