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
}
func (s *Server) handle(origCtx context.Context, handler handler, method string, call *tchannel.InboundCall) error {
reader, err := call.Arg2Reader()
if err != nil {
return err
}
headers, err := readHeaders(reader)
if err != nil {
return err
}
if err := reader.Close(); err != nil {
return err
}
reader, err = call.Arg3Reader()
if err != nil {
return err
}
ctx := WithHeaders(origCtx, headers)
protocol := thrift.NewTBinaryProtocolTransport(&readWriterTransport{Reader: reader})
success, resp, err := handler.server.Handle(ctx, method, protocol)
if err != nil {
reader.Close()
call.Response().SendSystemError(err)
return nil
}
if err := reader.Close(); err != nil {
return err
}
if !success {
call.Response().SetApplicationError()
}
writer, err := call.Response().Arg2Writer()
if err != nil {
return err
}
if err := writeHeaders(writer, ctx.ResponseHeaders()); err != nil {
return err
}
if err := writer.Close(); err != nil {
return err
}
writer, err = call.Response().Arg3Writer()
protocol = thrift.NewTBinaryProtocolTransport(&readWriterTransport{Writer: writer})
resp.Write(protocol)
err = writer.Close()
if handler.postResponseCB != nil {
handler.postResponseCB(method, resp)
}
return err
}
func (h *scribeHandler) spans() []*zipkincore.Span {
h.RLock()
defer h.RUnlock()
spans := []*zipkincore.Span{}
for _, m := range h.entries {
decoded, err := base64.StdEncoding.DecodeString(m.GetMessage())
if err != nil {
h.t.Error(err)
continue
}
buffer := thrift.NewTMemoryBuffer()
if _, err := buffer.Write(decoded); err != nil {
h.t.Error(err)
continue
}
transport := thrift.NewTBinaryProtocolTransport(buffer)
zs := &zipkincore.Span{}
if err := zs.Read(transport); err != nil {
h.t.Error(err)
continue
}
spans = append(spans, zs)
}
return spans
}
func kafkaSerialize(s *Span) []byte {
t := thrift.NewTMemoryBuffer()
p := thrift.NewTBinaryProtocolTransport(t)
if err := s.Encode().Write(p); err != nil {
panic(err)
}
return t.Buffer.Bytes()
}
func scribeSerialize(s *Span) string {
t := thrift.NewTMemoryBuffer()
p := thrift.NewTBinaryProtocolTransport(t)
if err := s.Encode().Write(p); err != nil {
panic(err)
}
return base64.StdEncoding.EncodeToString(t.Buffer.Bytes())
}
func spanToBytes(span *zipkin.Span) ([]byte, error) {
t := thrift.NewTMemoryBuffer()
p := thrift.NewTBinaryProtocolTransport(t)
err := span.Write(p)
if err != nil {
return nil, err
}
return t.Buffer.Bytes(), nil
}
func (z *zipkin) pub(s *zipkincore.Span, pr sarama.SyncProducer) {
t := thrift.NewTMemoryBufferLen(1024)
p := thrift.NewTBinaryProtocolTransport(t)
if err := s.Write(p); err != nil {
return
}
m := &sarama.ProducerMessage{
Topic: z.opts.Topic,
Value: sarama.ByteEncoder(t.Buffer.Bytes()),
}
pr.SendMessage(m)
}
// SerializeThrift takes a thrift struct and returns the serialized bytes
// of that 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 SerializeThrift(s athrift.TStruct) ([]byte, error) {
var b []byte
var buffer = bytes.NewBuffer(b)
transport := athrift.NewStreamTransportW(buffer)
if err := s.Write(athrift.NewTBinaryProtocolTransport(transport)); err != nil {
return nil, err
}
if err := transport.Flush(); err != nil {
return nil, err
}
return buffer.Bytes(), nil
}
func (c *ScribeCollector) newConnection() (scribe.Scribe, error) {
addr, err := net.ResolveTCPAddr("tcp", c.addr)
if err != nil {
return nil, err
}
socket := thrift.NewTSocketFromAddrTimeout(addr, timeout)
transport := thrift.NewTFramedTransport(socket)
if err := transport.Open(); err != nil {
return nil, err
}
proto := thrift.NewTBinaryProtocolTransport(transport)
s := scribe.NewScribeClientProtocol(transport, proto, proto)
return s, nil
}
func deserializeSpan(t *testing.T, e sarama.Encoder) *zipkincore.Span {
bytes, err := e.Encode()
if err != nil {
t.Errorf("error in encoding: %v", err)
}
s := zipkincore.NewSpan()
mb := thrift.NewTMemoryBufferLen(len(bytes))
mb.Write(bytes)
mb.Flush()
pt := thrift.NewTBinaryProtocolTransport(mb)
err = s.Read(pt)
if err != nil {
t.Errorf("error in decoding: %v", err)
}
return s
}
func scribeClientFactory(addr string, timeout time.Duration) func() (scribe.Scribe, error) {
return func() (scribe.Scribe, error) {
a, err := net.ResolveTCPAddr("tcp", addr)
if err != nil {
return nil, err
}
socket := thrift.NewTSocketFromAddrTimeout(a, timeout)
transport := thrift.NewTFramedTransport(socket)
if err := transport.Open(); err != nil {
socket.Close()
return nil, err
}
proto := thrift.NewTBinaryProtocolTransport(transport)
client := scribe.NewScribeClientProtocol(transport, proto, proto)
return client, nil
}
}
func newConnection(n *node, keyspace string, timeout time.Duration, authentication map[string]string) (*connection, error) {
addr, err := net.ResolveTCPAddr("tcp", n.node)
if err != nil {
return nil, err
}
c := &connection{node: n}
c.socket = thrift.NewTSocketFromAddrTimeout(addr, timeout)
c.transport = thrift.NewTFramedTransport(c.socket)
protocol := thrift.NewTBinaryProtocolTransport(c.transport)
c.client = cassandra.NewCassandraClientProtocol(c.transport, protocol, protocol)
if err = c.transport.Open(); err != nil {
return nil, err
}
version, err := c.client.DescribeVersion()
if err != nil {
c.close()
return nil, err
}
versionComponents := strings.Split(version, ".")
if len(versionComponents) < 1 {
return nil, errors.New(fmt.Sprint("Cannot parse the Thrift API version number: ", version))
}
majorVersion, err := strconv.Atoi(versionComponents[0])
if err != nil {
return nil, errors.New(fmt.Sprint("Cannot parse the Thrift API version number: ", version))
}
if majorVersion < LOWEST_COMPATIBLE_VERSION {
return nil, errors.New(fmt.Sprint("Unsupported Thrift API version, lowest supported is ", LOWEST_COMPATIBLE_VERSION,
", server reports ", majorVersion))
}
if len(authentication) > 0 {
ar := cassandra.NewAuthenticationRequest()
ar.Credentials = authentication
err := c.client.Login(ar)
if err != nil {
c.close()
switch err.(type) {
case *cassandra.AuthenticationException:
return nil, errors.New("Login error: cannot authenticate with the given credentials")
case *cassandra.AuthorizationException:
return nil, errors.New("Login error: the given credentials are not authorized to access the server")
default:
return nil, err
}
}
}
err = c.client.SetKeyspace(keyspace)
if err != nil {
c.close()
switch err.(type) {
case *cassandra.InvalidRequestException:
err = errors.New("Cannot set the keyspace " + keyspace)
}
return nil, err
}
return c, nil
}
// 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))
}
func (t *readWriterTransport) RemainingBytes() uint64 {
const maxSize = ^uint64(0)
return maxSize
}
var _ thrift.TRichTransport = &readWriterTransport{}
type thriftProtocol struct {
transport *readWriterTransport
protocol *thrift.TBinaryProtocol
}
var thriftProtocolPool = sync.Pool{
New: func() interface{} {
transport := &readWriterTransport{}
protocol := thrift.NewTBinaryProtocolTransport(transport)
return &thriftProtocol{transport, protocol}
},
}
func getProtocolWriter(writer io.Writer) *thriftProtocol {
wp := thriftProtocolPool.Get().(*thriftProtocol)
wp.transport.Reader = nil
wp.transport.Writer = writer
return wp
}
func getProtocolReader(reader io.Reader) *thriftProtocol {
wp := thriftProtocolPool.Get().(*thriftProtocol)
wp.transport.Reader = reader
wp.transport.Writer = nil