Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

18 files changed, 2544 insertions, 0 deletions

diff --git a/src/jaegertracing/thrift/lib/rb/ext/binary_protocol_accelerated.c b/src/jaegertracing/thrift/lib/rb/ext/binary_protocol_accelerated.c
new file mode 100644
index 000000000..65cbe5ffe
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/binary_protocol_accelerated.c
@@ -0,0 +1,460 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <ruby.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <constants.h>
+#include <struct.h>
+#include <macros.h>
+#include <bytes.h>
+
+VALUE rb_thrift_binary_proto_native_qmark(VALUE self) {
+  return Qtrue;
+}
+
+
+
+static int VERSION_1;
+static int VERSION_MASK;
+static int TYPE_MASK;
+static int BAD_VERSION;
+static ID rbuf_ivar_id;
+
+static void write_byte_direct(VALUE trans, int8_t b) {
+  WRITE(trans, (char*)&b, 1);
+}
+
+static void write_i16_direct(VALUE trans, int16_t value) {
+  char data[2];
+  
+  data[1] = value;
+  data[0] = (value >> 8);
+
+  WRITE(trans, data, 2);
+}
+
+static void write_i32_direct(VALUE trans, int32_t value) {
+  char data[4];
+
+  data[3] = value;
+  data[2] = (value >> 8);
+  data[1] = (value >> 16);
+  data[0] = (value >> 24);
+
+  WRITE(trans, data, 4);
+}
+
+
+static void write_i64_direct(VALUE trans, int64_t value) {
+  char data[8];
+
+  data[7] = value;
+  data[6] = (value >> 8);
+  data[5] = (value >> 16);
+  data[4] = (value >> 24);
+  data[3] = (value >> 32);
+  data[2] = (value >> 40);
+  data[1] = (value >> 48);
+  data[0] = (value >> 56);
+
+  WRITE(trans, data, 8);
+}
+
+static void write_string_direct(VALUE trans, VALUE str) {
+  if (TYPE(str) != T_STRING) {
+    rb_raise(rb_eStandardError, "Value should be a string");
+  }
+  str = convert_to_utf8_byte_buffer(str);
+  write_i32_direct(trans, RSTRING_LEN(str));
+  rb_funcall(trans, write_method_id, 1, str);
+}
+
+//--------------------------------
+// interface writing methods
+//--------------------------------
+
+VALUE rb_thrift_binary_proto_write_message_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_struct_begin(VALUE self, VALUE name) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_struct_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_field_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_map_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_list_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_set_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_message_begin(VALUE self, VALUE name, VALUE type, VALUE seqid) {
+  VALUE trans = GET_TRANSPORT(self);
+  VALUE strict_write = GET_STRICT_WRITE(self);
+
+  if (strict_write == Qtrue) {
+    write_i32_direct(trans, VERSION_1 | FIX2INT(type));
+    write_string_direct(trans, name);
+    write_i32_direct(trans, FIX2INT(seqid));
+  } else {
+    write_string_direct(trans, name);
+    write_byte_direct(trans, FIX2INT(type));
+    write_i32_direct(trans, FIX2INT(seqid));
+  }
+  
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_field_begin(VALUE self, VALUE name, VALUE type, VALUE id) {
+  VALUE trans = GET_TRANSPORT(self);
+  write_byte_direct(trans, FIX2INT(type));
+  write_i16_direct(trans, FIX2INT(id));
+  
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_field_stop(VALUE self) {
+  write_byte_direct(GET_TRANSPORT(self), TTYPE_STOP);
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_map_begin(VALUE self, VALUE ktype, VALUE vtype, VALUE size) {
+  VALUE trans = GET_TRANSPORT(self);
+  write_byte_direct(trans, FIX2INT(ktype));
+  write_byte_direct(trans, FIX2INT(vtype));
+  write_i32_direct(trans, FIX2INT(size));
+  
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_list_begin(VALUE self, VALUE etype, VALUE size) {
+  VALUE trans = GET_TRANSPORT(self);
+  write_byte_direct(trans, FIX2INT(etype));
+  write_i32_direct(trans, FIX2INT(size));
+  
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_set_begin(VALUE self, VALUE etype, VALUE size) {
+  rb_thrift_binary_proto_write_list_begin(self, etype, size);
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_bool(VALUE self, VALUE b) {
+  write_byte_direct(GET_TRANSPORT(self), RTEST(b) ? 1 : 0);
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_byte(VALUE self, VALUE byte) {
+  CHECK_NIL(byte);
+  write_byte_direct(GET_TRANSPORT(self), NUM2INT(byte));
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_i16(VALUE self, VALUE i16) {
+  CHECK_NIL(i16);
+  write_i16_direct(GET_TRANSPORT(self), FIX2INT(i16));
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_i32(VALUE self, VALUE i32) {
+  CHECK_NIL(i32);
+  write_i32_direct(GET_TRANSPORT(self), NUM2INT(i32));
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_i64(VALUE self, VALUE i64) {
+  CHECK_NIL(i64);
+  write_i64_direct(GET_TRANSPORT(self), NUM2LL(i64));
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_double(VALUE self, VALUE dub) {
+  CHECK_NIL(dub);
+  // Unfortunately, bitwise_cast doesn't work in C.  Bad C!
+  union {
+    double f;
+    int64_t t;
+  } transfer;
+  transfer.f = RFLOAT_VALUE(rb_Float(dub));
+  write_i64_direct(GET_TRANSPORT(self), transfer.t);
+
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_string(VALUE self, VALUE str) {
+  CHECK_NIL(str);
+  VALUE trans = GET_TRANSPORT(self);
+  write_string_direct(trans, str);
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_write_binary(VALUE self, VALUE buf) {
+  CHECK_NIL(buf);
+  VALUE trans = GET_TRANSPORT(self);
+  buf = force_binary_encoding(buf);
+  write_i32_direct(trans, RSTRING_LEN(buf));
+  rb_funcall(trans, write_method_id, 1, buf);
+  return Qnil;
+}
+
+//---------------------------------------
+// interface reading methods
+//---------------------------------------
+
+VALUE rb_thrift_binary_proto_read_string(VALUE self);
+VALUE rb_thrift_binary_proto_read_binary(VALUE self);
+VALUE rb_thrift_binary_proto_read_byte(VALUE self);
+VALUE rb_thrift_binary_proto_read_i32(VALUE self);
+VALUE rb_thrift_binary_proto_read_i16(VALUE self);
+
+static char read_byte_direct(VALUE self) {
+  VALUE byte = rb_funcall(GET_TRANSPORT(self), read_byte_method_id, 0);
+  return (char)(FIX2INT(byte));
+}
+
+static int16_t read_i16_direct(VALUE self) {
+  VALUE rbuf = rb_ivar_get(self, rbuf_ivar_id);
+  rb_funcall(GET_TRANSPORT(self), read_into_buffer_method_id, 2, rbuf, INT2FIX(2));
+  return (int16_t)(((uint8_t)(RSTRING_PTR(rbuf)[1])) | ((uint16_t)((RSTRING_PTR(rbuf)[0]) << 8)));
+}
+
+static int32_t read_i32_direct(VALUE self) {
+  VALUE rbuf = rb_ivar_get(self, rbuf_ivar_id);
+  rb_funcall(GET_TRANSPORT(self), read_into_buffer_method_id, 2, rbuf, INT2FIX(4));
+  return ((uint8_t)(RSTRING_PTR(rbuf)[3])) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[2])) << 8) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[1])) << 16) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[0])) << 24);
+}
+
+static int64_t read_i64_direct(VALUE self) {
+  VALUE rbuf = rb_ivar_get(self, rbuf_ivar_id);
+  rb_funcall(GET_TRANSPORT(self), read_into_buffer_method_id, 2, rbuf, INT2FIX(8));
+  uint64_t hi = ((uint8_t)(RSTRING_PTR(rbuf)[3])) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[2])) << 8) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[1])) << 16) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[0])) << 24);
+  uint32_t lo = ((uint8_t)(RSTRING_PTR(rbuf)[7])) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[6])) << 8) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[5])) << 16) |
+    (((uint8_t)(RSTRING_PTR(rbuf)[4])) << 24);
+  return (hi << 32) | lo;
+}
+
+static VALUE get_protocol_exception(VALUE code, VALUE message) {
+  VALUE args[2];
+  args[0] = code;
+  args[1] = message;
+  return rb_class_new_instance(2, (VALUE*)&args, protocol_exception_class);
+}
+
+VALUE rb_thrift_binary_proto_read_message_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_read_struct_begin(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_read_struct_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_read_field_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_read_map_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_read_list_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_read_set_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_binary_proto_read_message_begin(VALUE self) {
+  VALUE strict_read = GET_STRICT_READ(self);
+  VALUE name, seqid;
+  int type;
+  
+  int version = read_i32_direct(self);
+  
+  if (version < 0) {
+    if ((version & VERSION_MASK) != VERSION_1) {
+      rb_exc_raise(get_protocol_exception(INT2FIX(BAD_VERSION), rb_str_new2("Missing version identifier")));
+    }
+    type = version & TYPE_MASK;
+    name = rb_thrift_binary_proto_read_string(self);
+    seqid = rb_thrift_binary_proto_read_i32(self);
+  } else {
+    if (strict_read == Qtrue) {
+      rb_exc_raise(get_protocol_exception(INT2FIX(BAD_VERSION), rb_str_new2("No version identifier, old protocol client?")));
+    }
+    name = READ(self, version);
+    type = read_byte_direct(self);
+    seqid = rb_thrift_binary_proto_read_i32(self);
+  }
+  
+  return rb_ary_new3(3, name, INT2FIX(type), seqid);
+}
+
+VALUE rb_thrift_binary_proto_read_field_begin(VALUE self) {
+  int type = read_byte_direct(self);
+  if (type == TTYPE_STOP) {
+    return rb_ary_new3(3, Qnil, INT2FIX(type), INT2FIX(0));
+  } else {
+    VALUE id = rb_thrift_binary_proto_read_i16(self);
+    return rb_ary_new3(3, Qnil, INT2FIX(type), id);
+  }
+}
+
+VALUE rb_thrift_binary_proto_read_map_begin(VALUE self) {
+  VALUE ktype = rb_thrift_binary_proto_read_byte(self);
+  VALUE vtype = rb_thrift_binary_proto_read_byte(self);
+  VALUE size = rb_thrift_binary_proto_read_i32(self);
+  return rb_ary_new3(3, ktype, vtype, size);
+}
+
+VALUE rb_thrift_binary_proto_read_list_begin(VALUE self) {
+  VALUE etype = rb_thrift_binary_proto_read_byte(self);
+  VALUE size = rb_thrift_binary_proto_read_i32(self);
+  return rb_ary_new3(2, etype, size);
+}
+
+VALUE rb_thrift_binary_proto_read_set_begin(VALUE self) {
+  return rb_thrift_binary_proto_read_list_begin(self);
+}
+
+VALUE rb_thrift_binary_proto_read_bool(VALUE self) {
+  char byte = read_byte_direct(self);
+  return byte != 0 ? Qtrue : Qfalse;
+}
+
+VALUE rb_thrift_binary_proto_read_byte(VALUE self) {
+  return INT2FIX(read_byte_direct(self));
+}
+
+VALUE rb_thrift_binary_proto_read_i16(VALUE self) {
+  return INT2FIX(read_i16_direct(self));
+}
+
+VALUE rb_thrift_binary_proto_read_i32(VALUE self) {
+  return INT2NUM(read_i32_direct(self));
+}
+
+VALUE rb_thrift_binary_proto_read_i64(VALUE self) {
+  return LL2NUM(read_i64_direct(self));
+}
+
+VALUE rb_thrift_binary_proto_read_double(VALUE self) {
+  union {
+    double f;
+    int64_t t;
+  } transfer;
+  transfer.t = read_i64_direct(self);
+  return rb_float_new(transfer.f);
+}
+
+VALUE rb_thrift_binary_proto_read_string(VALUE self) {
+  VALUE buffer = rb_thrift_binary_proto_read_binary(self);
+  return convert_to_string(buffer);
+}
+
+VALUE rb_thrift_binary_proto_read_binary(VALUE self) {
+  int size = read_i32_direct(self);
+  return READ(self, size);
+}
+
+void Init_binary_protocol_accelerated() {
+  VALUE thrift_binary_protocol_class = rb_const_get(thrift_module, rb_intern("BinaryProtocol"));
+
+  VERSION_1 = rb_num2ll(rb_const_get(thrift_binary_protocol_class, rb_intern("VERSION_1")));
+  VERSION_MASK = rb_num2ll(rb_const_get(thrift_binary_protocol_class, rb_intern("VERSION_MASK")));
+  TYPE_MASK = rb_num2ll(rb_const_get(thrift_binary_protocol_class, rb_intern("TYPE_MASK")));
+
+  VALUE bpa_class = rb_define_class_under(thrift_module, "BinaryProtocolAccelerated", thrift_binary_protocol_class);
+
+  rb_define_method(bpa_class, "native?", rb_thrift_binary_proto_native_qmark, 0);
+
+  rb_define_method(bpa_class, "write_message_begin", rb_thrift_binary_proto_write_message_begin, 3);
+  rb_define_method(bpa_class, "write_field_begin",   rb_thrift_binary_proto_write_field_begin, 3);
+  rb_define_method(bpa_class, "write_field_stop",    rb_thrift_binary_proto_write_field_stop, 0);
+  rb_define_method(bpa_class, "write_map_begin",     rb_thrift_binary_proto_write_map_begin, 3);
+  rb_define_method(bpa_class, "write_list_begin",    rb_thrift_binary_proto_write_list_begin, 2);
+  rb_define_method(bpa_class, "write_set_begin",     rb_thrift_binary_proto_write_set_begin, 2);
+  rb_define_method(bpa_class, "write_byte",          rb_thrift_binary_proto_write_byte, 1);
+  rb_define_method(bpa_class, "write_bool",          rb_thrift_binary_proto_write_bool, 1);
+  rb_define_method(bpa_class, "write_i16",           rb_thrift_binary_proto_write_i16, 1);
+  rb_define_method(bpa_class, "write_i32",           rb_thrift_binary_proto_write_i32, 1);
+  rb_define_method(bpa_class, "write_i64",           rb_thrift_binary_proto_write_i64, 1);
+  rb_define_method(bpa_class, "write_double",        rb_thrift_binary_proto_write_double, 1);
+  rb_define_method(bpa_class, "write_string",        rb_thrift_binary_proto_write_string, 1);
+  rb_define_method(bpa_class, "write_binary",        rb_thrift_binary_proto_write_binary, 1);
+  // unused methods
+  rb_define_method(bpa_class, "write_message_end", rb_thrift_binary_proto_write_message_end, 0);
+  rb_define_method(bpa_class, "write_struct_begin", rb_thrift_binary_proto_write_struct_begin, 1);
+  rb_define_method(bpa_class, "write_struct_end", rb_thrift_binary_proto_write_struct_end, 0);
+  rb_define_method(bpa_class, "write_field_end", rb_thrift_binary_proto_write_field_end, 0);
+  rb_define_method(bpa_class, "write_map_end", rb_thrift_binary_proto_write_map_end, 0);
+  rb_define_method(bpa_class, "write_list_end", rb_thrift_binary_proto_write_list_end, 0);
+  rb_define_method(bpa_class, "write_set_end", rb_thrift_binary_proto_write_set_end, 0);
+
+  rb_define_method(bpa_class, "read_message_begin",  rb_thrift_binary_proto_read_message_begin, 0);
+  rb_define_method(bpa_class, "read_field_begin",    rb_thrift_binary_proto_read_field_begin, 0);
+  rb_define_method(bpa_class, "read_map_begin",      rb_thrift_binary_proto_read_map_begin, 0);
+  rb_define_method(bpa_class, "read_list_begin",     rb_thrift_binary_proto_read_list_begin, 0);
+  rb_define_method(bpa_class, "read_set_begin",      rb_thrift_binary_proto_read_set_begin, 0);
+  rb_define_method(bpa_class, "read_byte",           rb_thrift_binary_proto_read_byte, 0);
+  rb_define_method(bpa_class, "read_bool",           rb_thrift_binary_proto_read_bool, 0);
+  rb_define_method(bpa_class, "read_i16",            rb_thrift_binary_proto_read_i16, 0);
+  rb_define_method(bpa_class, "read_i32",            rb_thrift_binary_proto_read_i32, 0);
+  rb_define_method(bpa_class, "read_i64",            rb_thrift_binary_proto_read_i64, 0);
+  rb_define_method(bpa_class, "read_double",         rb_thrift_binary_proto_read_double, 0);
+  rb_define_method(bpa_class, "read_string",         rb_thrift_binary_proto_read_string, 0);
+  rb_define_method(bpa_class, "read_binary",         rb_thrift_binary_proto_read_binary, 0);
+  // unused methods
+  rb_define_method(bpa_class, "read_message_end", rb_thrift_binary_proto_read_message_end, 0);
+  rb_define_method(bpa_class, "read_struct_begin", rb_thrift_binary_proto_read_struct_begin, 0);
+  rb_define_method(bpa_class, "read_struct_end", rb_thrift_binary_proto_read_struct_end, 0);
+  rb_define_method(bpa_class, "read_field_end", rb_thrift_binary_proto_read_field_end, 0);
+  rb_define_method(bpa_class, "read_map_end", rb_thrift_binary_proto_read_map_end, 0);
+  rb_define_method(bpa_class, "read_list_end", rb_thrift_binary_proto_read_list_end, 0);
+  rb_define_method(bpa_class, "read_set_end", rb_thrift_binary_proto_read_set_end, 0);
+
+  rbuf_ivar_id = rb_intern("@rbuf");
+}
diff --git a/src/jaegertracing/thrift/lib/rb/ext/binary_protocol_accelerated.h b/src/jaegertracing/thrift/lib/rb/ext/binary_protocol_accelerated.h
new file mode 100644
index 000000000..37baf4142
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/binary_protocol_accelerated.h
@@ -0,0 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+void Init_binary_protocol_accelerated();
diff --git a/src/jaegertracing/thrift/lib/rb/ext/bytes.c b/src/jaegertracing/thrift/lib/rb/ext/bytes.c
new file mode 100644
index 000000000..8a6fac4ac
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/bytes.c
@@ -0,0 +1,36 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <ruby.h>
+#ifdef HAVE_RUBY_ENCODING_H
+#include <ruby/encoding.h>
+#endif
+#include <constants.h>
+
+VALUE force_binary_encoding(VALUE buffer) {
+  return rb_funcall(thrift_bytes_module, force_binary_encoding_id, 1, buffer);
+}
+
+VALUE convert_to_utf8_byte_buffer(VALUE string) {
+  return rb_funcall(thrift_bytes_module, convert_to_utf8_byte_buffer_id, 1, string);
+}
+
+VALUE convert_to_string(VALUE utf8_buffer) {
+  return rb_funcall(thrift_bytes_module, convert_to_string_id, 1, utf8_buffer);
+}
diff --git a/src/jaegertracing/thrift/lib/rb/ext/bytes.h b/src/jaegertracing/thrift/lib/rb/ext/bytes.h
new file mode 100644
index 000000000..7108d83ff
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/bytes.h
@@ -0,0 +1,31 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <ruby.h>
+
+/*
+ * A collection of utilities for working with bytes and byte buffers.
+ *
+ * These methods are the native analogies to some of the methods in
+ * Thrift::Bytes (thrift/bytes.rb).
+ */
+
+VALUE force_binary_encoding(VALUE buffer);
+VALUE convert_to_utf8_byte_buffer(VALUE string);
+VALUE convert_to_string(VALUE utf8_buffer);
diff --git a/src/jaegertracing/thrift/lib/rb/ext/compact_protocol.c b/src/jaegertracing/thrift/lib/rb/ext/compact_protocol.c
new file mode 100644
index 000000000..c0f46b958
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/compact_protocol.c
@@ -0,0 +1,637 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <ruby.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <constants.h>
+#include <struct.h>
+#include <macros.h>
+#include <bytes.h>
+
+#define LAST_ID(obj) FIX2INT(rb_ary_pop(rb_ivar_get(obj, last_field_id)))
+#define SET_LAST_ID(obj, val) rb_ary_push(rb_ivar_get(obj, last_field_id), val)
+
+VALUE rb_thrift_compact_proto_native_qmark(VALUE self) {
+  return Qtrue;
+}
+
+static ID last_field_id;
+static ID boolean_field_id;
+static ID bool_value_id;
+static ID rbuf_ivar_id;
+
+static int VERSION;
+static int VERSION_MASK;
+static int TYPE_MASK;
+static int TYPE_BITS;
+static int TYPE_SHIFT_AMOUNT;
+static int PROTOCOL_ID;
+
+static VALUE thrift_compact_protocol_class;
+
+static int CTYPE_BOOLEAN_TRUE   = 0x01;
+static int CTYPE_BOOLEAN_FALSE  = 0x02;
+static int CTYPE_BYTE           = 0x03;
+static int CTYPE_I16            = 0x04;
+static int CTYPE_I32            = 0x05;
+static int CTYPE_I64            = 0x06;
+static int CTYPE_DOUBLE         = 0x07;
+static int CTYPE_BINARY         = 0x08;
+static int CTYPE_LIST           = 0x09;
+static int CTYPE_SET            = 0x0A;
+static int CTYPE_MAP            = 0x0B;
+static int CTYPE_STRUCT         = 0x0C;
+
+VALUE rb_thrift_compact_proto_write_i16(VALUE self, VALUE i16);
+
+// TODO: implement this
+static int get_compact_type(VALUE type_value) {
+  int type = FIX2INT(type_value);
+  if (type == TTYPE_BOOL) {
+    return CTYPE_BOOLEAN_TRUE;
+  } else if (type == TTYPE_BYTE) {
+    return CTYPE_BYTE;
+  } else if (type == TTYPE_I16) {
+    return CTYPE_I16;
+  } else if (type == TTYPE_I32) {
+    return CTYPE_I32;
+  } else if (type == TTYPE_I64) {
+    return CTYPE_I64;
+  } else if (type == TTYPE_DOUBLE) {
+    return CTYPE_DOUBLE;
+  } else if (type == TTYPE_STRING) {
+    return CTYPE_BINARY;
+  } else if (type == TTYPE_LIST) {
+    return CTYPE_LIST;
+  } else if (type == TTYPE_SET) {
+    return CTYPE_SET;
+  } else if (type == TTYPE_MAP) {
+    return CTYPE_MAP;
+  } else if (type == TTYPE_STRUCT) {
+    return CTYPE_STRUCT;
+  } else {
+    char str[50];
+    sprintf(str, "don't know what type: %d", type);
+    rb_raise(rb_eStandardError, "%s", str);
+    return 0;
+  }
+}
+
+static void write_byte_direct(VALUE transport, int8_t b) {
+  WRITE(transport, (char*)&b, 1);
+}
+
+static void write_field_begin_internal(VALUE self, VALUE type, VALUE id_value, VALUE type_override) {
+  int id = FIX2INT(id_value);
+  int last_id = LAST_ID(self);
+  VALUE transport = GET_TRANSPORT(self);
+  
+  // if there's a type override, use that.
+  int8_t type_to_write = RTEST(type_override) ? FIX2INT(type_override) : get_compact_type(type);
+  // check if we can use delta encoding for the field id
+  int diff = id - last_id;
+  if (diff > 0 && diff <= 15) {
+    // write them together
+    write_byte_direct(transport, diff << 4 | (type_to_write & 0x0f));
+  } else {
+    // write them separate
+    write_byte_direct(transport, type_to_write & 0x0f);
+    rb_thrift_compact_proto_write_i16(self, id_value);
+  }
+
+  SET_LAST_ID(self, id_value);
+}
+
+static int32_t int_to_zig_zag(int32_t n) {
+  return (n << 1) ^ (n >> 31);
+}
+
+static uint64_t ll_to_zig_zag(int64_t n) {
+  return (n << 1) ^ (n >> 63);
+}
+
+static void write_varint32(VALUE transport, uint32_t n) {
+  while (true) {
+    if ((n & ~0x7F) == 0) {
+      write_byte_direct(transport, n & 0x7f);
+      break;
+    } else {
+      write_byte_direct(transport, (n & 0x7F) | 0x80);
+      n = n >> 7;
+    }
+  }
+}
+
+static void write_varint64(VALUE transport, uint64_t n) {
+  while (true) {
+    if ((n & ~0x7F) == 0) {
+      write_byte_direct(transport, n & 0x7f);
+      break;
+    } else {
+      write_byte_direct(transport, (n & 0x7F) | 0x80);
+      n = n >> 7;
+    }
+  }
+}
+
+static void write_collection_begin(VALUE transport, VALUE elem_type, VALUE size_value) {
+  int size = FIX2INT(size_value);
+  if (size <= 14) {
+    write_byte_direct(transport, size << 4 | get_compact_type(elem_type));
+  } else {
+    write_byte_direct(transport, 0xf0 | get_compact_type(elem_type));
+    write_varint32(transport, size);
+  }
+}
+
+
+//--------------------------------
+// interface writing methods
+//--------------------------------
+
+VALUE rb_thrift_compact_proto_write_i32(VALUE self, VALUE i32);
+VALUE rb_thrift_compact_proto_write_string(VALUE self, VALUE str);
+VALUE rb_thrift_compact_proto_write_binary(VALUE self, VALUE buf);
+
+VALUE rb_thrift_compact_proto_write_message_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_struct_begin(VALUE self, VALUE name) {
+  rb_ary_push(rb_ivar_get(self, last_field_id), INT2FIX(0));
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_struct_end(VALUE self) {
+  rb_ary_pop(rb_ivar_get(self, last_field_id));
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_field_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_map_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_list_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_set_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_message_begin(VALUE self, VALUE name, VALUE type, VALUE seqid) {
+  VALUE transport = GET_TRANSPORT(self);
+  write_byte_direct(transport, PROTOCOL_ID);
+  write_byte_direct(transport, (VERSION & VERSION_MASK) | ((FIX2INT(type) << TYPE_SHIFT_AMOUNT) & TYPE_MASK));
+  write_varint32(transport, FIX2INT(seqid));
+  rb_thrift_compact_proto_write_string(self, name);
+  
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_field_begin(VALUE self, VALUE name, VALUE type, VALUE id) {
+  if (FIX2INT(type) == TTYPE_BOOL) {
+    // we want to possibly include the value, so we'll wait.
+    rb_ivar_set(self, boolean_field_id, rb_ary_new3(2, type, id));
+  } else {
+    write_field_begin_internal(self, type, id, Qnil);
+  }
+
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_field_stop(VALUE self) {
+  write_byte_direct(GET_TRANSPORT(self), TTYPE_STOP);
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_map_begin(VALUE self, VALUE ktype, VALUE vtype, VALUE size_value) {
+  int size = FIX2INT(size_value);
+  VALUE transport = GET_TRANSPORT(self);
+  if (size == 0) {
+    write_byte_direct(transport, 0);
+  } else {
+    write_varint32(transport, size);
+    write_byte_direct(transport, get_compact_type(ktype) << 4 | get_compact_type(vtype));
+  }
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_list_begin(VALUE self, VALUE etype, VALUE size) {
+  write_collection_begin(GET_TRANSPORT(self), etype, size);
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_set_begin(VALUE self, VALUE etype, VALUE size) {
+  write_collection_begin(GET_TRANSPORT(self), etype, size);
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_bool(VALUE self, VALUE b) {
+  int8_t type = b == Qtrue ? CTYPE_BOOLEAN_TRUE : CTYPE_BOOLEAN_FALSE;
+  VALUE boolean_field = rb_ivar_get(self, boolean_field_id);
+  if (NIL_P(boolean_field)) {
+    // we're not part of a field, so just write the value.
+    write_byte_direct(GET_TRANSPORT(self), type);
+  } else {
+    // we haven't written the field header yet
+    write_field_begin_internal(self, rb_ary_entry(boolean_field, 0), rb_ary_entry(boolean_field, 1), INT2FIX(type));
+    rb_ivar_set(self, boolean_field_id, Qnil);
+  }
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_byte(VALUE self, VALUE byte) {
+  CHECK_NIL(byte);
+  write_byte_direct(GET_TRANSPORT(self), FIX2INT(byte));
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_i16(VALUE self, VALUE i16) {
+  rb_thrift_compact_proto_write_i32(self, i16);
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_i32(VALUE self, VALUE i32) {
+  CHECK_NIL(i32);
+  write_varint32(GET_TRANSPORT(self), int_to_zig_zag(NUM2INT(i32)));
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_i64(VALUE self, VALUE i64) {
+  CHECK_NIL(i64);
+  write_varint64(GET_TRANSPORT(self), ll_to_zig_zag(NUM2LL(i64)));
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_double(VALUE self, VALUE dub) {
+  CHECK_NIL(dub);
+  // Unfortunately, bitwise_cast doesn't work in C.  Bad C!
+  union {
+    double f;
+    int64_t l;
+  } transfer;
+  transfer.f = RFLOAT_VALUE(rb_Float(dub));
+  char buf[8];
+  buf[0] = transfer.l & 0xff;
+  buf[1] = (transfer.l >> 8) & 0xff;
+  buf[2] = (transfer.l >> 16) & 0xff;
+  buf[3] = (transfer.l >> 24) & 0xff;
+  buf[4] = (transfer.l >> 32) & 0xff;
+  buf[5] = (transfer.l >> 40) & 0xff;
+  buf[6] = (transfer.l >> 48) & 0xff;
+  buf[7] = (transfer.l >> 56) & 0xff;
+  WRITE(GET_TRANSPORT(self), buf, 8);
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_string(VALUE self, VALUE str) {
+  str = convert_to_utf8_byte_buffer(str);
+  rb_thrift_compact_proto_write_binary(self, str);
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_write_binary(VALUE self, VALUE buf) {
+  buf = force_binary_encoding(buf);
+  VALUE transport = GET_TRANSPORT(self);
+  write_varint32(transport, RSTRING_LEN(buf));
+  WRITE(transport, StringValuePtr(buf), RSTRING_LEN(buf));
+  return Qnil;
+}
+
+//---------------------------------------
+// interface reading methods
+//---------------------------------------
+
+#define is_bool_type(ctype) (((ctype) & 0x0F) == CTYPE_BOOLEAN_TRUE || ((ctype) & 0x0F) == CTYPE_BOOLEAN_FALSE)
+
+VALUE rb_thrift_compact_proto_read_string(VALUE self);
+VALUE rb_thrift_compact_proto_read_binary(VALUE self);
+VALUE rb_thrift_compact_proto_read_byte(VALUE self);
+VALUE rb_thrift_compact_proto_read_i32(VALUE self);
+VALUE rb_thrift_compact_proto_read_i16(VALUE self);
+
+static int8_t get_ttype(int8_t ctype) {
+  if (ctype == TTYPE_STOP) {
+    return TTYPE_STOP;
+  } else if (ctype == CTYPE_BOOLEAN_TRUE || ctype == CTYPE_BOOLEAN_FALSE) {
+    return TTYPE_BOOL;
+  } else if (ctype == CTYPE_BYTE) {
+    return TTYPE_BYTE;
+  } else if (ctype == CTYPE_I16) {
+    return TTYPE_I16;
+  } else if (ctype == CTYPE_I32) {
+    return TTYPE_I32;
+  } else if (ctype == CTYPE_I64) {
+    return TTYPE_I64;
+  } else if (ctype == CTYPE_DOUBLE) {
+    return TTYPE_DOUBLE;
+  } else if (ctype == CTYPE_BINARY) {
+    return TTYPE_STRING;
+  } else if (ctype == CTYPE_LIST) {
+    return TTYPE_LIST;
+  } else if (ctype == CTYPE_SET) {
+    return TTYPE_SET;
+  } else if (ctype == CTYPE_MAP) {
+    return TTYPE_MAP;
+  } else if (ctype == CTYPE_STRUCT) {
+    return TTYPE_STRUCT;
+  } else {
+    char str[50];
+    sprintf(str, "don't know what type: %d", ctype);
+    rb_raise(rb_eStandardError, "%s", str);
+    return 0;
+  }
+}
+
+static char read_byte_direct(VALUE self) {
+  VALUE byte = rb_funcall(GET_TRANSPORT(self), read_byte_method_id, 0);
+  return (char)(FIX2INT(byte));
+}
+
+static int64_t zig_zag_to_ll(int64_t n) {
+  return (((uint64_t)n) >> 1) ^ -(n & 1);
+}
+
+static int32_t zig_zag_to_int(int32_t n) {
+  return (((uint32_t)n) >> 1) ^ -(n & 1);
+}
+
+static int64_t read_varint64(VALUE self) {
+  int shift = 0;
+  int64_t result = 0;
+  while (true) {
+    int8_t b = read_byte_direct(self);
+    result = result | ((uint64_t)(b & 0x7f) << shift);
+    if ((b & 0x80) != 0x80) {
+      break;
+    }
+    shift += 7;
+  }
+  return result;
+}
+
+static int16_t read_i16(VALUE self) {
+  return zig_zag_to_int((int32_t)read_varint64(self));
+}
+
+static VALUE get_protocol_exception(VALUE code, VALUE message) {
+  VALUE args[2];
+  args[0] = code;
+  args[1] = message;
+  return rb_class_new_instance(2, (VALUE*)&args, protocol_exception_class);
+}
+
+VALUE rb_thrift_compact_proto_read_message_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_read_struct_begin(VALUE self) {
+  rb_ary_push(rb_ivar_get(self, last_field_id), INT2FIX(0));
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_read_struct_end(VALUE self) {
+  rb_ary_pop(rb_ivar_get(self, last_field_id));
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_read_field_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_read_map_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_read_list_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_read_set_end(VALUE self) {
+  return Qnil;
+}
+
+VALUE rb_thrift_compact_proto_read_message_begin(VALUE self) {
+  int8_t protocol_id = read_byte_direct(self);
+  if (protocol_id != PROTOCOL_ID) {
+    char buf[100];
+    int len = sprintf(buf, "Expected protocol id %d but got %d", PROTOCOL_ID, protocol_id);
+    buf[len] = 0;
+    rb_exc_raise(get_protocol_exception(INT2FIX(-1), rb_str_new2(buf)));
+  }
+  
+  int8_t version_and_type = read_byte_direct(self);
+  int8_t version = version_and_type & VERSION_MASK;
+  if (version != VERSION) {
+    char buf[100];
+    int len = sprintf(buf, "Expected version id %d but got %d", version, VERSION);
+    buf[len] = 0;
+    rb_exc_raise(get_protocol_exception(INT2FIX(-1), rb_str_new2(buf)));
+  }
+  
+  int8_t type = (version_and_type >> TYPE_SHIFT_AMOUNT) & TYPE_BITS;
+  int32_t seqid = read_varint64(self);
+  VALUE messageName = rb_thrift_compact_proto_read_string(self);
+  return rb_ary_new3(3, messageName, INT2FIX(type), INT2NUM(seqid));
+}
+
+VALUE rb_thrift_compact_proto_read_field_begin(VALUE self) {
+  int8_t type = read_byte_direct(self);
+  // if it's a stop, then we can return immediately, as the struct is over.
+  if ((type & 0x0f) == TTYPE_STOP) {
+    return rb_ary_new3(3, Qnil, INT2FIX(0), INT2FIX(0));
+  } else {
+    int field_id = 0;
+
+    // mask off the 4 MSB of the type header. it could contain a field id delta.
+    uint8_t modifier = ((type & 0xf0) >> 4);
+    
+    if (modifier == 0) {
+      // not a delta. look ahead for the zigzag varint field id.
+      (void) LAST_ID(self);
+      field_id = read_i16(self);
+    } else {
+      // has a delta. add the delta to the last read field id.
+      field_id = LAST_ID(self) + modifier;
+    }
+
+    // if this happens to be a boolean field, the value is encoded in the type
+    if (is_bool_type(type)) {
+      // save the boolean value in a special instance variable.
+      rb_ivar_set(self, bool_value_id, (type & 0x0f) == CTYPE_BOOLEAN_TRUE ? Qtrue : Qfalse);
+    }
+
+    // push the new field onto the field stack so we can keep the deltas going.
+    SET_LAST_ID(self, INT2FIX(field_id));
+    return rb_ary_new3(3, Qnil, INT2FIX(get_ttype(type & 0x0f)), INT2FIX(field_id));
+  }
+}
+
+VALUE rb_thrift_compact_proto_read_map_begin(VALUE self) {
+  int32_t size = read_varint64(self);
+  uint8_t key_and_value_type = size == 0 ? 0 : read_byte_direct(self);
+  return rb_ary_new3(3, INT2FIX(get_ttype(key_and_value_type >> 4)), INT2FIX(get_ttype(key_and_value_type & 0xf)), INT2FIX(size));
+}
+
+VALUE rb_thrift_compact_proto_read_list_begin(VALUE self) {
+  uint8_t size_and_type = read_byte_direct(self);
+  int32_t size = (size_and_type >> 4) & 0x0f;
+  if (size == 15) {
+    size = read_varint64(self);
+  }
+  uint8_t type = get_ttype(size_and_type & 0x0f);
+  return rb_ary_new3(2, INT2FIX(type), INT2FIX(size));
+}
+
+VALUE rb_thrift_compact_proto_read_set_begin(VALUE self) {
+  return rb_thrift_compact_proto_read_list_begin(self);
+}
+
+VALUE rb_thrift_compact_proto_read_bool(VALUE self) {
+  VALUE bool_value = rb_ivar_get(self, bool_value_id);
+  if (NIL_P(bool_value)) {
+    return read_byte_direct(self) == CTYPE_BOOLEAN_TRUE ? Qtrue : Qfalse;
+  } else {
+    rb_ivar_set(self, bool_value_id, Qnil);
+    return bool_value;
+  }
+}
+
+VALUE rb_thrift_compact_proto_read_byte(VALUE self) {
+  return INT2FIX(read_byte_direct(self));
+}
+
+VALUE rb_thrift_compact_proto_read_i16(VALUE self) {
+  return INT2FIX(read_i16(self));
+}
+
+VALUE rb_thrift_compact_proto_read_i32(VALUE self) {
+  return INT2NUM(zig_zag_to_int(read_varint64(self)));
+}
+
+VALUE rb_thrift_compact_proto_read_i64(VALUE self) {
+  return LL2NUM(zig_zag_to_ll(read_varint64(self)));
+}
+
+VALUE rb_thrift_compact_proto_read_double(VALUE self) {
+  union {
+    double f;
+    int64_t l;
+  } transfer;
+  VALUE rbuf = rb_ivar_get(self, rbuf_ivar_id);
+  rb_funcall(GET_TRANSPORT(self), read_into_buffer_method_id, 2, rbuf, INT2FIX(8));
+  uint32_t lo = ((uint8_t)(RSTRING_PTR(rbuf)[0]))
+    | (((uint8_t)(RSTRING_PTR(rbuf)[1])) << 8)
+    | (((uint8_t)(RSTRING_PTR(rbuf)[2])) << 16)
+    | (((uint8_t)(RSTRING_PTR(rbuf)[3])) << 24);
+  uint64_t hi = (((uint8_t)(RSTRING_PTR(rbuf)[4])))
+    | (((uint8_t)(RSTRING_PTR(rbuf)[5])) << 8)
+    | (((uint8_t)(RSTRING_PTR(rbuf)[6])) << 16)
+    | (((uint8_t)(RSTRING_PTR(rbuf)[7])) << 24);
+  transfer.l = (hi << 32) | lo;
+
+  return rb_float_new(transfer.f);
+}
+
+VALUE rb_thrift_compact_proto_read_string(VALUE self) {
+  VALUE buffer = rb_thrift_compact_proto_read_binary(self);
+  return convert_to_string(buffer);
+}
+
+VALUE rb_thrift_compact_proto_read_binary(VALUE self) {
+  int64_t size = read_varint64(self);
+  return READ(self, size);
+}
+
+static void Init_constants() {
+  thrift_compact_protocol_class = rb_const_get(thrift_module, rb_intern("CompactProtocol"));
+
+  VERSION = rb_num2ll(rb_const_get(thrift_compact_protocol_class, rb_intern("VERSION")));
+  VERSION_MASK = rb_num2ll(rb_const_get(thrift_compact_protocol_class, rb_intern("VERSION_MASK")));
+  TYPE_MASK = rb_num2ll(rb_const_get(thrift_compact_protocol_class, rb_intern("TYPE_MASK")));
+  TYPE_BITS = rb_num2ll(rb_const_get(thrift_compact_protocol_class, rb_intern("TYPE_BITS")));
+  TYPE_SHIFT_AMOUNT = FIX2INT(rb_const_get(thrift_compact_protocol_class, rb_intern("TYPE_SHIFT_AMOUNT")));
+  PROTOCOL_ID = FIX2INT(rb_const_get(thrift_compact_protocol_class, rb_intern("PROTOCOL_ID")));
+
+  last_field_id = rb_intern("@last_field");
+  boolean_field_id = rb_intern("@boolean_field");
+  bool_value_id = rb_intern("@bool_value");
+  rbuf_ivar_id = rb_intern("@rbuf");
+}
+
+static void Init_rb_methods() {
+  rb_define_method(thrift_compact_protocol_class, "native?", rb_thrift_compact_proto_native_qmark, 0);
+
+  rb_define_method(thrift_compact_protocol_class, "write_message_begin", rb_thrift_compact_proto_write_message_begin, 3);
+  rb_define_method(thrift_compact_protocol_class, "write_field_begin",   rb_thrift_compact_proto_write_field_begin, 3);
+  rb_define_method(thrift_compact_protocol_class, "write_field_stop",    rb_thrift_compact_proto_write_field_stop, 0);
+  rb_define_method(thrift_compact_protocol_class, "write_map_begin",     rb_thrift_compact_proto_write_map_begin, 3);
+  rb_define_method(thrift_compact_protocol_class, "write_list_begin",    rb_thrift_compact_proto_write_list_begin, 2);
+  rb_define_method(thrift_compact_protocol_class, "write_set_begin",     rb_thrift_compact_proto_write_set_begin, 2);
+  rb_define_method(thrift_compact_protocol_class, "write_byte",          rb_thrift_compact_proto_write_byte, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_bool",          rb_thrift_compact_proto_write_bool, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_i16",           rb_thrift_compact_proto_write_i16, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_i32",           rb_thrift_compact_proto_write_i32, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_i64",           rb_thrift_compact_proto_write_i64, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_double",        rb_thrift_compact_proto_write_double, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_string",        rb_thrift_compact_proto_write_string, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_binary",        rb_thrift_compact_proto_write_binary, 1);
+
+  rb_define_method(thrift_compact_protocol_class, "write_message_end", rb_thrift_compact_proto_write_message_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "write_struct_begin", rb_thrift_compact_proto_write_struct_begin, 1);
+  rb_define_method(thrift_compact_protocol_class, "write_struct_end", rb_thrift_compact_proto_write_struct_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "write_field_end", rb_thrift_compact_proto_write_field_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "write_map_end", rb_thrift_compact_proto_write_map_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "write_list_end", rb_thrift_compact_proto_write_list_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "write_set_end", rb_thrift_compact_proto_write_set_end, 0);
+
+
+  rb_define_method(thrift_compact_protocol_class, "read_message_begin",  rb_thrift_compact_proto_read_message_begin, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_field_begin",    rb_thrift_compact_proto_read_field_begin, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_map_begin",      rb_thrift_compact_proto_read_map_begin, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_list_begin",     rb_thrift_compact_proto_read_list_begin, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_set_begin",      rb_thrift_compact_proto_read_set_begin, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_byte",           rb_thrift_compact_proto_read_byte, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_bool",           rb_thrift_compact_proto_read_bool, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_i16",            rb_thrift_compact_proto_read_i16, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_i32",            rb_thrift_compact_proto_read_i32, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_i64",            rb_thrift_compact_proto_read_i64, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_double",         rb_thrift_compact_proto_read_double, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_string",         rb_thrift_compact_proto_read_string, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_binary",         rb_thrift_compact_proto_read_binary, 0);
+
+  rb_define_method(thrift_compact_protocol_class, "read_message_end", rb_thrift_compact_proto_read_message_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_struct_begin",  rb_thrift_compact_proto_read_struct_begin, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_struct_end",    rb_thrift_compact_proto_read_struct_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_field_end",     rb_thrift_compact_proto_read_field_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_map_end",       rb_thrift_compact_proto_read_map_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_list_end",      rb_thrift_compact_proto_read_list_end, 0);
+  rb_define_method(thrift_compact_protocol_class, "read_set_end",       rb_thrift_compact_proto_read_set_end, 0);
+}
+
+void Init_compact_protocol() {
+  Init_constants();
+  Init_rb_methods();
+}
diff --git a/src/jaegertracing/thrift/lib/rb/ext/compact_protocol.h b/src/jaegertracing/thrift/lib/rb/ext/compact_protocol.h
new file mode 100644
index 000000000..163915e94
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/compact_protocol.h
@@ -0,0 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+void Init_compact_protocol();
diff --git a/src/jaegertracing/thrift/lib/rb/ext/constants.h b/src/jaegertracing/thrift/lib/rb/ext/constants.h
new file mode 100644
index 000000000..e7aec4478
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/constants.h
@@ -0,0 +1,99 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+extern int TTYPE_STOP;
+extern int TTYPE_BOOL;
+extern int TTYPE_BYTE;
+extern int TTYPE_I16;
+extern int TTYPE_I32;
+extern int TTYPE_I64;
+extern int TTYPE_DOUBLE;
+extern int TTYPE_STRING;
+extern int TTYPE_MAP;
+extern int TTYPE_SET;
+extern int TTYPE_LIST;
+extern int TTYPE_STRUCT;
+
+extern ID validate_method_id;
+extern ID write_struct_begin_method_id;
+extern ID write_struct_end_method_id;
+extern ID write_field_begin_method_id;
+extern ID write_field_end_method_id;
+extern ID write_boolean_method_id;
+extern ID write_byte_method_id;
+extern ID write_i16_method_id;
+extern ID write_i32_method_id;
+extern ID write_i64_method_id;
+extern ID write_double_method_id;
+extern ID write_string_method_id;
+extern ID write_binary_method_id;
+extern ID write_map_begin_method_id;
+extern ID write_map_end_method_id;
+extern ID write_list_begin_method_id;
+extern ID write_list_end_method_id;
+extern ID write_set_begin_method_id;
+extern ID write_set_end_method_id;
+extern ID read_bool_method_id;
+extern ID read_byte_method_id;
+extern ID read_i16_method_id;
+extern ID read_i32_method_id;
+extern ID read_i64_method_id;
+extern ID read_string_method_id;
+extern ID read_binary_method_id;
+extern ID read_double_method_id;
+extern ID read_map_begin_method_id;
+extern ID read_map_end_method_id;
+extern ID read_list_begin_method_id;
+extern ID read_list_end_method_id;
+extern ID read_set_begin_method_id;
+extern ID read_set_end_method_id;
+extern ID read_struct_begin_method_id;
+extern ID read_struct_end_method_id;
+extern ID read_field_begin_method_id;
+extern ID read_field_end_method_id;
+extern ID keys_method_id;
+extern ID entries_method_id;
+extern ID write_field_stop_method_id;
+extern ID skip_method_id;
+extern ID write_method_id;
+extern ID read_all_method_id;
+extern ID read_into_buffer_method_id;
+extern ID force_binary_encoding_id;
+extern ID convert_to_utf8_byte_buffer_id;
+extern ID convert_to_string_id;
+
+extern ID fields_const_id;
+extern ID transport_ivar_id;
+extern ID strict_read_ivar_id;
+extern ID strict_write_ivar_id;
+
+extern VALUE type_sym;
+extern VALUE name_sym;
+extern VALUE key_sym;
+extern VALUE value_sym;
+extern VALUE element_sym;
+extern VALUE class_sym;
+extern VALUE binary_sym;
+
+extern VALUE rb_cSet;
+extern VALUE thrift_module;
+extern VALUE thrift_types_module;
+extern VALUE thrift_bytes_module;
+extern VALUE class_thrift_protocol;
+extern VALUE protocol_exception_class;
diff --git a/src/jaegertracing/thrift/lib/rb/ext/extconf.rb b/src/jaegertracing/thrift/lib/rb/ext/extconf.rb
new file mode 100644
index 000000000..b35f60bf3
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/extconf.rb
@@ -0,0 +1,34 @@
+# 
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# 
+
+if defined?(RUBY_ENGINE) && RUBY_ENGINE =~ /jruby/
+  File.open('Makefile', 'w'){|f| f.puts "all:\n\ninstall:\n" }
+else
+  require 'mkmf'
+  require 'rbconfig'
+
+  $ARCH_FLAGS = RbConfig::CONFIG['CFLAGS'].scan( /(-arch )(\S+)/ ).map{|x,y| x + y + ' ' }.join('')
+
+
+  $CFLAGS = "-fsigned-char -g -O2 -Wall -Werror " + $ARCH_FLAGS
+
+  have_func("strlcpy", "string.h")
+
+  create_makefile 'thrift_native'
+end
diff --git a/src/jaegertracing/thrift/lib/rb/ext/macros.h b/src/jaegertracing/thrift/lib/rb/ext/macros.h
new file mode 100644
index 000000000..265f6930d
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/macros.h
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#define GET_TRANSPORT(obj) rb_ivar_get(obj, transport_ivar_id)
+#define GET_STRICT_READ(obj) rb_ivar_get(obj, strict_read_ivar_id)
+#define GET_STRICT_WRITE(obj) rb_ivar_get(obj, strict_write_ivar_id)
+#define WRITE(obj, data, length) rb_funcall(obj, write_method_id, 1, rb_str_new(data, length))
+#define CHECK_NIL(obj) if (NIL_P(obj)) { rb_raise(rb_eStandardError, "nil argument not allowed!");}
+#define READ(obj, length) rb_funcall(GET_TRANSPORT(obj), read_all_method_id, 1, INT2FIX(length))
+
+#ifndef RFLOAT_VALUE
+#  define RFLOAT_VALUE(v) RFLOAT(rb_Float(v))->value
+#endif
+
+#ifndef RSTRING_LEN
+#  define RSTRING_LEN(v) RSTRING(rb_String(v))->len
+#endif
+
+#ifndef RSTRING_PTR
+#  define RSTRING_PTR(v) RSTRING(rb_String(v))->ptr
+#endif
+
+#ifndef RARRAY_LEN
+#  define RARRAY_LEN(v) RARRAY(rb_Array(v))->len
+#endif
diff --git a/src/jaegertracing/thrift/lib/rb/ext/memory_buffer.c b/src/jaegertracing/thrift/lib/rb/ext/memory_buffer.c
new file mode 100644
index 000000000..8b52c4a3e
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/memory_buffer.c
@@ -0,0 +1,134 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <ruby.h>
+#include <constants.h>
+#include <bytes.h>
+#include <macros.h>
+
+ID buf_ivar_id;
+ID index_ivar_id;
+
+ID slice_method_id;
+
+int GARBAGE_BUFFER_SIZE;
+
+#define GET_BUF(self) rb_ivar_get(self, buf_ivar_id)
+
+VALUE rb_thrift_memory_buffer_write(VALUE self, VALUE str);
+VALUE rb_thrift_memory_buffer_read(VALUE self, VALUE length_value);
+VALUE rb_thrift_memory_buffer_read_byte(VALUE self);
+VALUE rb_thrift_memory_buffer_read_into_buffer(VALUE self, VALUE buffer_value, VALUE size_value);
+
+VALUE rb_thrift_memory_buffer_write(VALUE self, VALUE str) {
+  VALUE buf = GET_BUF(self);
+  str = force_binary_encoding(str);
+  rb_str_buf_cat(buf, StringValuePtr(str), RSTRING_LEN(str));
+  return Qnil;
+}
+
+VALUE rb_thrift_memory_buffer_read(VALUE self, VALUE length_value) {
+  int length = FIX2INT(length_value);
+  
+  VALUE index_value = rb_ivar_get(self, index_ivar_id);
+  int index = FIX2INT(index_value);
+  
+  VALUE buf = GET_BUF(self);
+  VALUE data = rb_funcall(buf, slice_method_id, 2, index_value, length_value);
+  
+  index += length;
+  if (index > RSTRING_LEN(buf)) {
+    index = RSTRING_LEN(buf);
+  }
+  if (index >= GARBAGE_BUFFER_SIZE) {
+    rb_ivar_set(self, buf_ivar_id, rb_funcall(buf, slice_method_id, 2, INT2FIX(index), INT2FIX(RSTRING_LEN(buf) - 1)));
+    index = 0;
+  }
+  rb_ivar_set(self, index_ivar_id, INT2FIX(index));
+
+  if (RSTRING_LEN(data) < length) {
+    rb_raise(rb_eEOFError, "Not enough bytes remain in memory buffer");
+  }
+
+  return data;
+}
+
+VALUE rb_thrift_memory_buffer_read_byte(VALUE self) {
+  VALUE index_value = rb_ivar_get(self, index_ivar_id);
+  int index = FIX2INT(index_value);
+
+  VALUE buf = GET_BUF(self);
+  if (index >= RSTRING_LEN(buf)) {
+    rb_raise(rb_eEOFError, "Not enough bytes remain in memory buffer");
+  }
+  char byte = RSTRING_PTR(buf)[index++];
+
+  if (index >= GARBAGE_BUFFER_SIZE) {
+    rb_ivar_set(self, buf_ivar_id, rb_funcall(buf, slice_method_id, 2, INT2FIX(index), INT2FIX(RSTRING_LEN(buf) - 1)));
+    index = 0;
+  }
+  rb_ivar_set(self, index_ivar_id, INT2FIX(index));
+
+  int result = (int) byte;
+  return INT2FIX(result);
+}
+
+VALUE rb_thrift_memory_buffer_read_into_buffer(VALUE self, VALUE buffer_value, VALUE size_value) {
+  int i = 0;
+  int size = FIX2INT(size_value);
+  int index;
+  VALUE buf = GET_BUF(self);
+
+  index = FIX2INT(rb_ivar_get(self, index_ivar_id));
+  while (i < size) {
+    if (index >= RSTRING_LEN(buf)) {
+      rb_raise(rb_eEOFError, "Not enough bytes remain in memory buffer");
+    }
+    char byte = RSTRING_PTR(buf)[index++];
+
+    if (i >= RSTRING_LEN(buffer_value)) {
+      rb_raise(rb_eIndexError, "index %d out of string", i);
+    }
+    ((char*)RSTRING_PTR(buffer_value))[i] = byte;
+    i++;
+  }
+
+  if (index >= GARBAGE_BUFFER_SIZE) {
+    rb_ivar_set(self, buf_ivar_id, rb_funcall(buf, slice_method_id, 2, INT2FIX(index), INT2FIX(RSTRING_LEN(buf) - 1)));
+    index = 0;
+  }
+  rb_ivar_set(self, index_ivar_id, INT2FIX(index));
+
+  return INT2FIX(i);
+}
+
+void Init_memory_buffer() {
+  VALUE thrift_memory_buffer_class = rb_const_get(thrift_module, rb_intern("MemoryBufferTransport"));
+  rb_define_method(thrift_memory_buffer_class, "write", rb_thrift_memory_buffer_write, 1);
+  rb_define_method(thrift_memory_buffer_class, "read", rb_thrift_memory_buffer_read, 1);
+  rb_define_method(thrift_memory_buffer_class, "read_byte", rb_thrift_memory_buffer_read_byte, 0);
+  rb_define_method(thrift_memory_buffer_class, "read_into_buffer", rb_thrift_memory_buffer_read_into_buffer, 2);
+  
+  buf_ivar_id = rb_intern("@buf");
+  index_ivar_id = rb_intern("@index");
+  
+  slice_method_id = rb_intern("slice");
+  
+  GARBAGE_BUFFER_SIZE = FIX2INT(rb_const_get(thrift_memory_buffer_class, rb_intern("GARBAGE_BUFFER_SIZE")));
+}
diff --git a/src/jaegertracing/thrift/lib/rb/ext/memory_buffer.h b/src/jaegertracing/thrift/lib/rb/ext/memory_buffer.h
new file mode 100644
index 000000000..b277fa6f6
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/memory_buffer.h
@@ -0,0 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+void Init_memory_buffer();
diff --git a/src/jaegertracing/thrift/lib/rb/ext/protocol.c b/src/jaegertracing/thrift/lib/rb/ext/protocol.c
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/protocol.c
diff --git a/src/jaegertracing/thrift/lib/rb/ext/protocol.h b/src/jaegertracing/thrift/lib/rb/ext/protocol.h
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/protocol.h
diff --git a/src/jaegertracing/thrift/lib/rb/ext/strlcpy.c b/src/jaegertracing/thrift/lib/rb/ext/strlcpy.c
new file mode 100644
index 000000000..6700ff2d4
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/strlcpy.c
@@ -0,0 +1,41 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include "strlcpy.h"
+
+#ifndef HAVE_STRLCPY
+#define HAVE_STRLCPY
+size_t
+strlcpy (char *dst, const char *src, size_t dst_sz)
+{
+    size_t n;
+
+    for (n = 0; n < dst_sz; n++) {
+      if ((*dst++ = *src++) == '\0')
+        break;
+    }
+
+    if (n < dst_sz)
+      return n;
+    if (n > 0)
+      *(dst - 1) = '\0';
+    return n + strlen (src);
+}
+#endif
+
diff --git a/src/jaegertracing/thrift/lib/rb/ext/strlcpy.h b/src/jaegertracing/thrift/lib/rb/ext/strlcpy.h
new file mode 100644
index 000000000..f6fe0fe6b
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/strlcpy.h
@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
+#ifndef HAVE_STRLCPY
+size_t strlcpy (char *dst, const char *src, size_t dst_sz);
+#else
+#if !__has_builtin(strlcpy)
+extern size_t strlcpy(char *, const char *, size_t);
+#endif
+#endif
+
diff --git a/src/jaegertracing/thrift/lib/rb/ext/struct.c b/src/jaegertracing/thrift/lib/rb/ext/struct.c
new file mode 100644
index 000000000..e3aa855ed
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/struct.c
@@ -0,0 +1,711 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include "struct.h"
+#include "constants.h"
+#include "macros.h"
+#include "strlcpy.h"
+
+VALUE thrift_union_class;
+
+ID setfield_id;
+ID setvalue_id;
+
+ID to_s_method_id;
+ID name_to_id_method_id;
+static ID sorted_field_ids_method_id;
+
+#define IS_CONTAINER(ttype) ((ttype) == TTYPE_MAP || (ttype) == TTYPE_LIST || (ttype) == TTYPE_SET)
+#define STRUCT_FIELDS(obj) rb_const_get(CLASS_OF(obj), fields_const_id)
+
+//-------------------------------------------
+// Writing section
+//-------------------------------------------
+
+// default fn pointers for protocol stuff here
+
+VALUE default_write_bool(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_boolean_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_byte(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_byte_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_i16(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_i16_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_i32(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_i32_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_i64(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_i64_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_double(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_double_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_string(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_string_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_binary(VALUE protocol, VALUE value) {
+  rb_funcall(protocol, write_binary_method_id, 1, value);
+  return Qnil;
+}
+
+VALUE default_write_list_begin(VALUE protocol, VALUE etype, VALUE length) {
+  rb_funcall(protocol, write_list_begin_method_id, 2, etype, length);
+  return Qnil;
+}
+
+VALUE default_write_list_end(VALUE protocol) {
+  rb_funcall(protocol, write_list_end_method_id, 0);
+  return Qnil;
+}
+
+VALUE default_write_set_begin(VALUE protocol, VALUE etype, VALUE length) {
+  rb_funcall(protocol, write_set_begin_method_id, 2, etype, length);
+  return Qnil;
+}
+
+VALUE default_write_set_end(VALUE protocol) {
+  rb_funcall(protocol, write_set_end_method_id, 0);
+  return Qnil;
+}
+
+VALUE default_write_map_begin(VALUE protocol, VALUE ktype, VALUE vtype, VALUE length) {
+  rb_funcall(protocol, write_map_begin_method_id, 3, ktype, vtype, length);
+  return Qnil;
+}
+
+VALUE default_write_map_end(VALUE protocol) {
+  rb_funcall(protocol, write_map_end_method_id, 0);
+  return Qnil;
+}
+
+VALUE default_write_struct_begin(VALUE protocol, VALUE struct_name) {
+  rb_funcall(protocol, write_struct_begin_method_id, 1, struct_name);
+  return Qnil;
+}
+
+VALUE default_write_struct_end(VALUE protocol) {
+  rb_funcall(protocol, write_struct_end_method_id, 0);
+  return Qnil;
+}
+
+VALUE default_write_field_begin(VALUE protocol, VALUE name, VALUE type, VALUE id) {
+  rb_funcall(protocol, write_field_begin_method_id, 3, name, type, id);
+  return Qnil;
+}
+
+VALUE default_write_field_end(VALUE protocol) {
+  rb_funcall(protocol, write_field_end_method_id, 0);
+  return Qnil;
+}
+
+VALUE default_write_field_stop(VALUE protocol) {
+  rb_funcall(protocol, write_field_stop_method_id, 0);
+  return Qnil;
+}
+
+VALUE default_read_field_begin(VALUE protocol) {
+  return rb_funcall(protocol, read_field_begin_method_id, 0);
+}
+
+VALUE default_read_field_end(VALUE protocol) {
+  return rb_funcall(protocol, read_field_end_method_id, 0);
+}
+
+VALUE default_read_map_begin(VALUE protocol) {
+  return rb_funcall(protocol, read_map_begin_method_id, 0);
+}
+
+VALUE default_read_map_end(VALUE protocol) {
+  return rb_funcall(protocol, read_map_end_method_id, 0);
+}
+
+VALUE default_read_list_begin(VALUE protocol) {
+  return rb_funcall(protocol, read_list_begin_method_id, 0);
+}
+
+VALUE default_read_list_end(VALUE protocol) {
+  return rb_funcall(protocol, read_list_end_method_id, 0);
+}
+
+VALUE default_read_set_begin(VALUE protocol) {
+  return rb_funcall(protocol, read_set_begin_method_id, 0);
+}
+
+VALUE default_read_set_end(VALUE protocol) {
+  return rb_funcall(protocol, read_set_end_method_id, 0);
+}
+
+VALUE default_read_byte(VALUE protocol) {
+  return rb_funcall(protocol, read_byte_method_id, 0);
+}
+
+VALUE default_read_bool(VALUE protocol) {
+  return rb_funcall(protocol, read_bool_method_id, 0);
+}
+
+VALUE default_read_i16(VALUE protocol) {
+  return rb_funcall(protocol, read_i16_method_id, 0);
+}
+
+VALUE default_read_i32(VALUE protocol) {
+  return rb_funcall(protocol, read_i32_method_id, 0);
+}
+
+VALUE default_read_i64(VALUE protocol) {
+  return rb_funcall(protocol, read_i64_method_id, 0);
+}
+
+VALUE default_read_double(VALUE protocol) {
+  return rb_funcall(protocol, read_double_method_id, 0);
+}
+
+VALUE default_read_string(VALUE protocol) {
+  return rb_funcall(protocol, read_string_method_id, 0);
+}
+
+VALUE default_read_binary(VALUE protocol) {
+  return rb_funcall(protocol, read_binary_method_id, 0);
+}
+
+VALUE default_read_struct_begin(VALUE protocol) {
+  return rb_funcall(protocol, read_struct_begin_method_id, 0);
+}
+
+VALUE default_read_struct_end(VALUE protocol) {
+  return rb_funcall(protocol, read_struct_end_method_id, 0);
+}
+
+// end default protocol methods
+
+static VALUE rb_thrift_union_write (VALUE self, VALUE protocol);
+static VALUE rb_thrift_struct_write(VALUE self, VALUE protocol);
+static void write_anything(int ttype, VALUE value, VALUE protocol, VALUE field_info);
+
+VALUE get_field_value(VALUE obj, VALUE field_name) {
+  char name_buf[RSTRING_LEN(field_name) + 2];
+
+  name_buf[0] = '@';
+  strlcpy(&name_buf[1], RSTRING_PTR(field_name), RSTRING_LEN(field_name) + 1);
+
+  VALUE value = rb_ivar_get(obj, rb_intern(name_buf));
+
+  return value;
+}
+
+static void write_container(int ttype, VALUE field_info, VALUE value, VALUE protocol) {
+  int sz, i;
+
+  if (ttype == TTYPE_MAP) {
+    VALUE keys;
+    VALUE key;
+    VALUE val;
+
+    Check_Type(value, T_HASH);
+
+    VALUE key_info = rb_hash_aref(field_info, key_sym);
+    VALUE keytype_value = rb_hash_aref(key_info, type_sym);
+    int keytype = FIX2INT(keytype_value);
+
+    VALUE value_info = rb_hash_aref(field_info, value_sym);
+    VALUE valuetype_value = rb_hash_aref(value_info, type_sym);
+    int valuetype = FIX2INT(valuetype_value);
+
+    keys = rb_funcall(value, keys_method_id, 0);
+
+    sz = RARRAY_LEN(keys);
+
+    default_write_map_begin(protocol, keytype_value, valuetype_value, INT2FIX(sz));
+
+    for (i = 0; i < sz; i++) {
+      key = rb_ary_entry(keys, i);
+      val = rb_hash_aref(value, key);
+
+      if (IS_CONTAINER(keytype)) {
+        write_container(keytype, key_info, key, protocol);
+      } else {
+        write_anything(keytype, key, protocol, key_info);
+      }
+
+      if (IS_CONTAINER(valuetype)) {
+        write_container(valuetype, value_info, val, protocol);
+      } else {
+        write_anything(valuetype, val, protocol, value_info);
+      }
+    }
+
+    default_write_map_end(protocol);
+  } else if (ttype == TTYPE_LIST) {
+    Check_Type(value, T_ARRAY);
+
+    sz = RARRAY_LEN(value);
+
+    VALUE element_type_info = rb_hash_aref(field_info, element_sym);
+    VALUE element_type_value = rb_hash_aref(element_type_info, type_sym);
+    int element_type = FIX2INT(element_type_value);
+
+    default_write_list_begin(protocol, element_type_value, INT2FIX(sz));
+    for (i = 0; i < sz; ++i) {
+      VALUE val = rb_ary_entry(value, i);
+      if (IS_CONTAINER(element_type)) {
+        write_container(element_type, element_type_info, val, protocol);
+      } else {
+        write_anything(element_type, val, protocol, element_type_info);
+      }
+    }
+    default_write_list_end(protocol);
+  } else if (ttype == TTYPE_SET) {
+    VALUE items;
+
+    if (TYPE(value) == T_ARRAY) {
+      items = value;
+    } else {
+      if (rb_cSet == CLASS_OF(value)) {
+        items = rb_funcall(value, entries_method_id, 0);
+      } else {
+        Check_Type(value, T_HASH);
+        items = rb_funcall(value, keys_method_id, 0);
+      }
+    }
+
+    sz = RARRAY_LEN(items);
+
+    VALUE element_type_info = rb_hash_aref(field_info, element_sym);
+    VALUE element_type_value = rb_hash_aref(element_type_info, type_sym);
+    int element_type = FIX2INT(element_type_value);
+
+    default_write_set_begin(protocol, element_type_value, INT2FIX(sz));
+
+    for (i = 0; i < sz; i++) {
+      VALUE val = rb_ary_entry(items, i);
+      if (IS_CONTAINER(element_type)) {
+        write_container(element_type, element_type_info, val, protocol);
+      } else {
+        write_anything(element_type, val, protocol, element_type_info);
+      }
+    }
+
+    default_write_set_end(protocol);
+  } else {
+    rb_raise(rb_eNotImpError, "can't write container of type: %d", ttype);
+  }
+}
+
+static void write_anything(int ttype, VALUE value, VALUE protocol, VALUE field_info) {
+  if (ttype == TTYPE_BOOL) {
+    default_write_bool(protocol, value);
+  } else if (ttype == TTYPE_BYTE) {
+    default_write_byte(protocol, value);
+  } else if (ttype == TTYPE_I16) {
+    default_write_i16(protocol, value);
+  } else if (ttype == TTYPE_I32) {
+    default_write_i32(protocol, value);
+  } else if (ttype == TTYPE_I64) {
+    default_write_i64(protocol, value);
+  } else if (ttype == TTYPE_DOUBLE) {
+    default_write_double(protocol, value);
+  } else if (ttype == TTYPE_STRING) {
+    VALUE is_binary = rb_hash_aref(field_info, binary_sym);
+    if (is_binary != Qtrue) {
+      default_write_string(protocol, value);
+    } else {
+      default_write_binary(protocol, value);
+    }
+  } else if (IS_CONTAINER(ttype)) {
+    write_container(ttype, field_info, value, protocol);
+  } else if (ttype == TTYPE_STRUCT) {
+    if (rb_obj_is_kind_of(value, thrift_union_class)) {
+      rb_thrift_union_write(value, protocol);
+    } else {
+      rb_thrift_struct_write(value, protocol);
+    }
+  } else {
+    rb_raise(rb_eNotImpError, "Unknown type for binary_encoding: %d", ttype);
+  }
+}
+
+static VALUE rb_thrift_struct_write(VALUE self, VALUE protocol) {
+  // call validate
+  rb_funcall(self, validate_method_id, 0);
+
+  // write struct begin
+  default_write_struct_begin(protocol, rb_class_name(CLASS_OF(self)));
+
+  // iterate through all the fields here
+  VALUE struct_fields = STRUCT_FIELDS(self);
+  VALUE sorted_field_ids = rb_funcall(self, sorted_field_ids_method_id, 0);
+
+  int i = 0;
+  for (i=0; i < RARRAY_LEN(sorted_field_ids); i++) {
+    VALUE field_id = rb_ary_entry(sorted_field_ids, i);
+
+    VALUE field_info = rb_hash_aref(struct_fields, field_id);
+
+    VALUE ttype_value = rb_hash_aref(field_info, type_sym);
+    int ttype = FIX2INT(ttype_value);
+    VALUE field_name = rb_hash_aref(field_info, name_sym);
+
+    VALUE field_value = get_field_value(self, field_name);
+
+    if (!NIL_P(field_value)) {
+      default_write_field_begin(protocol, field_name, ttype_value, field_id);
+
+      write_anything(ttype, field_value, protocol, field_info);
+
+      default_write_field_end(protocol);
+    }
+  }
+
+  default_write_field_stop(protocol);
+
+  // write struct end
+  default_write_struct_end(protocol);
+
+  return Qnil;
+}
+
+//-------------------------------------------
+// Reading section
+//-------------------------------------------
+
+static VALUE rb_thrift_union_read(VALUE self, VALUE protocol);
+static VALUE rb_thrift_struct_read(VALUE self, VALUE protocol);
+static void skip_map_contents(VALUE protocol, VALUE key_type_value, VALUE value_type_value, int size);
+static void skip_list_or_set_contents(VALUE protocol, VALUE element_type_value, int size);
+
+static void set_field_value(VALUE obj, VALUE field_name, VALUE value) {
+  char name_buf[RSTRING_LEN(field_name) + 2];
+
+  name_buf[0] = '@';
+  strlcpy(&name_buf[1], RSTRING_PTR(field_name), RSTRING_LEN(field_name)+1);
+
+  rb_ivar_set(obj, rb_intern(name_buf), value);
+}
+
+// Helper method to skip the contents of a map (assumes the map header has been read).
+static void skip_map_contents(VALUE protocol, VALUE key_type_value, VALUE value_type_value, int size) {
+  int i;
+  for (i = 0; i < size; i++) {
+    rb_funcall(protocol, skip_method_id, 1, key_type_value);
+    rb_funcall(protocol, skip_method_id, 1, value_type_value);
+  }
+}
+
+// Helper method to skip the contents of a list or set (assumes the list/set header has been read).
+static void skip_list_or_set_contents(VALUE protocol, VALUE element_type_value, int size) {
+  int i;
+  for (i = 0; i < size; i++) {
+    rb_funcall(protocol, skip_method_id, 1, element_type_value);
+  }
+}
+
+static VALUE read_anything(VALUE protocol, int ttype, VALUE field_info) {
+  VALUE result = Qnil;
+
+  if (ttype == TTYPE_BOOL) {
+    result = default_read_bool(protocol);
+  } else if (ttype == TTYPE_BYTE) {
+    result = default_read_byte(protocol);
+  } else if (ttype == TTYPE_I16) {
+    result = default_read_i16(protocol);
+  } else if (ttype == TTYPE_I32) {
+    result = default_read_i32(protocol);
+  } else if (ttype == TTYPE_I64) {
+    result = default_read_i64(protocol);
+  } else if (ttype == TTYPE_STRING) {
+    VALUE is_binary = rb_hash_aref(field_info, binary_sym);
+    if (is_binary != Qtrue) {
+      result = default_read_string(protocol);
+    } else {
+      result = default_read_binary(protocol);
+    }
+  } else if (ttype == TTYPE_DOUBLE) {
+    result = default_read_double(protocol);
+  } else if (ttype == TTYPE_STRUCT) {
+    VALUE klass = rb_hash_aref(field_info, class_sym);
+    result = rb_class_new_instance(0, NULL, klass);
+
+    if (rb_obj_is_kind_of(result, thrift_union_class)) {
+      rb_thrift_union_read(result, protocol);
+    } else {
+      rb_thrift_struct_read(result, protocol);
+    }
+  } else if (ttype == TTYPE_MAP) {
+    int i;
+
+    VALUE map_header = default_read_map_begin(protocol);
+    int key_ttype = FIX2INT(rb_ary_entry(map_header, 0));
+    int value_ttype = FIX2INT(rb_ary_entry(map_header, 1));
+    int num_entries = FIX2INT(rb_ary_entry(map_header, 2));
+
+    // Check the declared key and value types against the expected ones and skip the map contents
+    // if the types don't match.
+    VALUE key_info = rb_hash_aref(field_info, key_sym);
+    VALUE value_info = rb_hash_aref(field_info, value_sym);
+
+    if (!NIL_P(key_info) && !NIL_P(value_info)) {
+      int specified_key_type = FIX2INT(rb_hash_aref(key_info, type_sym));
+      int specified_value_type = FIX2INT(rb_hash_aref(value_info, type_sym));
+      if (num_entries == 0 || (specified_key_type == key_ttype && specified_value_type == value_ttype)) {
+        result = rb_hash_new();
+
+        for (i = 0; i < num_entries; ++i) {
+          VALUE key, val;
+
+          key = read_anything(protocol, key_ttype, key_info);
+          val = read_anything(protocol, value_ttype, value_info);
+
+          rb_hash_aset(result, key, val);
+        }
+      } else {
+        skip_map_contents(protocol, INT2FIX(key_ttype), INT2FIX(value_ttype), num_entries);
+      }
+    } else {
+      skip_map_contents(protocol, INT2FIX(key_ttype), INT2FIX(value_ttype), num_entries);
+    }
+
+    default_read_map_end(protocol);
+  } else if (ttype == TTYPE_LIST) {
+    int i;
+
+    VALUE list_header = default_read_list_begin(protocol);
+    int element_ttype = FIX2INT(rb_ary_entry(list_header, 0));
+    int num_elements = FIX2INT(rb_ary_entry(list_header, 1));
+
+    // Check the declared element type against the expected one and skip the list contents
+    // if the types don't match.
+    VALUE element_info = rb_hash_aref(field_info, element_sym);
+    if (!NIL_P(element_info)) {
+      int specified_element_type = FIX2INT(rb_hash_aref(element_info, type_sym));
+      if (specified_element_type == element_ttype) {
+        result = rb_ary_new2(num_elements);
+
+        for (i = 0; i < num_elements; ++i) {
+          rb_ary_push(result, read_anything(protocol, element_ttype, rb_hash_aref(field_info, element_sym)));
+        }
+      } else {
+        skip_list_or_set_contents(protocol, INT2FIX(element_ttype), num_elements);
+      }
+    } else {
+      skip_list_or_set_contents(protocol, INT2FIX(element_ttype), num_elements);
+    }
+
+    default_read_list_end(protocol);
+  } else if (ttype == TTYPE_SET) {
+    VALUE items;
+    int i;
+
+    VALUE set_header = default_read_set_begin(protocol);
+    int element_ttype = FIX2INT(rb_ary_entry(set_header, 0));
+    int num_elements = FIX2INT(rb_ary_entry(set_header, 1));
+
+    // Check the declared element type against the expected one and skip the set contents
+    // if the types don't match.
+    VALUE element_info = rb_hash_aref(field_info, element_sym);
+    if (!NIL_P(element_info)) {
+      int specified_element_type = FIX2INT(rb_hash_aref(element_info, type_sym));
+      if (specified_element_type == element_ttype) {
+        items = rb_ary_new2(num_elements);
+
+        for (i = 0; i < num_elements; ++i) {
+          rb_ary_push(items, read_anything(protocol, element_ttype, rb_hash_aref(field_info, element_sym)));
+        }
+
+        result = rb_class_new_instance(1, &items, rb_cSet);
+      } else {
+        skip_list_or_set_contents(protocol, INT2FIX(element_ttype), num_elements);
+      }
+    } else {
+      skip_list_or_set_contents(protocol, INT2FIX(element_ttype), num_elements);
+    }
+
+    default_read_set_end(protocol);
+  } else {
+    rb_raise(rb_eNotImpError, "read_anything not implemented for type %d!", ttype);
+  }
+
+  return result;
+}
+
+static VALUE rb_thrift_struct_read(VALUE self, VALUE protocol) {
+  // read struct begin
+  default_read_struct_begin(protocol);
+
+  VALUE struct_fields = STRUCT_FIELDS(self);
+
+  // read each field
+  while (true) {
+    VALUE field_header = default_read_field_begin(protocol);
+    VALUE field_type_value = rb_ary_entry(field_header, 1);
+    int field_type = FIX2INT(field_type_value);
+
+    if (field_type == TTYPE_STOP) {
+      break;
+    }
+
+    // make sure we got a type we expected
+    VALUE field_info = rb_hash_aref(struct_fields, rb_ary_entry(field_header, 2));
+
+    if (!NIL_P(field_info)) {
+      int specified_type = FIX2INT(rb_hash_aref(field_info, type_sym));
+      if (field_type == specified_type) {
+        // read the value
+        VALUE name = rb_hash_aref(field_info, name_sym);
+        set_field_value(self, name, read_anything(protocol, field_type, field_info));
+      } else {
+        rb_funcall(protocol, skip_method_id, 1, field_type_value);
+      }
+    } else {
+      rb_funcall(protocol, skip_method_id, 1, field_type_value);
+    }
+
+    // read field end
+    default_read_field_end(protocol);
+  }
+
+  // read struct end
+  default_read_struct_end(protocol);
+
+  // call validate
+  rb_funcall(self, validate_method_id, 0);
+
+  return Qnil;
+}
+
+
+// --------------------------------
+// Union section
+// --------------------------------
+
+static VALUE rb_thrift_union_read(VALUE self, VALUE protocol) {
+  // read struct begin
+  default_read_struct_begin(protocol);
+
+  VALUE struct_fields = STRUCT_FIELDS(self);
+
+  VALUE field_header = default_read_field_begin(protocol);
+  VALUE field_type_value = rb_ary_entry(field_header, 1);
+  int field_type = FIX2INT(field_type_value);
+
+  // make sure we got a type we expected
+  VALUE field_info = rb_hash_aref(struct_fields, rb_ary_entry(field_header, 2));
+
+  if (!NIL_P(field_info)) {
+    int specified_type = FIX2INT(rb_hash_aref(field_info, type_sym));
+    if (field_type == specified_type) {
+      // read the value
+      VALUE name = rb_hash_aref(field_info, name_sym);
+      rb_iv_set(self, "@setfield", rb_str_intern(name));
+      rb_iv_set(self, "@value", read_anything(protocol, field_type, field_info));
+    } else {
+      rb_funcall(protocol, skip_method_id, 1, field_type_value);
+    }
+  } else {
+    rb_funcall(protocol, skip_method_id, 1, field_type_value);
+  }
+
+  // read field end
+  default_read_field_end(protocol);
+
+  field_header = default_read_field_begin(protocol);
+  field_type_value = rb_ary_entry(field_header, 1);
+  field_type = FIX2INT(field_type_value);
+
+  if (field_type != TTYPE_STOP) {
+    rb_raise(rb_eRuntimeError, "too many fields in union!");
+  }
+
+  // read struct end
+  default_read_struct_end(protocol);
+
+  // call validate
+  rb_funcall(self, validate_method_id, 0);
+
+  return Qnil;
+}
+
+static VALUE rb_thrift_union_write(VALUE self, VALUE protocol) {
+  // call validate
+  rb_funcall(self, validate_method_id, 0);
+
+  // write struct begin
+  default_write_struct_begin(protocol, rb_class_name(CLASS_OF(self)));
+
+  VALUE struct_fields = STRUCT_FIELDS(self);
+
+  VALUE setfield = rb_ivar_get(self, setfield_id);
+  VALUE setvalue = rb_ivar_get(self, setvalue_id);
+  VALUE field_id = rb_funcall(self, name_to_id_method_id, 1, rb_funcall(setfield, to_s_method_id, 0));
+
+  VALUE field_info = rb_hash_aref(struct_fields, field_id);
+
+  if(NIL_P(field_info)) {
+    rb_raise(rb_eRuntimeError, "set_field is not valid for this union!");
+  }
+
+  VALUE ttype_value = rb_hash_aref(field_info, type_sym);
+  int ttype = FIX2INT(ttype_value);
+
+  default_write_field_begin(protocol, setfield, ttype_value, field_id);
+
+  write_anything(ttype, setvalue, protocol, field_info);
+
+  default_write_field_end(protocol);
+
+  default_write_field_stop(protocol);
+
+  // write struct end
+  default_write_struct_end(protocol);
+
+  return Qnil;
+}
+
+void Init_struct() {
+  VALUE struct_module = rb_const_get(thrift_module, rb_intern("Struct"));
+
+  rb_define_method(struct_module, "write", rb_thrift_struct_write, 1);
+  rb_define_method(struct_module, "read", rb_thrift_struct_read, 1);
+
+  thrift_union_class = rb_const_get(thrift_module, rb_intern("Union"));
+
+  rb_define_method(thrift_union_class, "write", rb_thrift_union_write, 1);
+  rb_define_method(thrift_union_class, "read", rb_thrift_union_read, 1);
+
+  setfield_id = rb_intern("@setfield");
+  setvalue_id = rb_intern("@value");
+
+  to_s_method_id = rb_intern("to_s");
+  name_to_id_method_id = rb_intern("name_to_id");
+  sorted_field_ids_method_id = rb_intern("sorted_field_ids");
+}
diff --git a/src/jaegertracing/thrift/lib/rb/ext/struct.h b/src/jaegertracing/thrift/lib/rb/ext/struct.h
new file mode 100644
index 000000000..4748be5cb
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/struct.h
@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+
+#include <stdbool.h>
+#include <ruby.h>
+
+void Init_struct();
+void Init_union();
diff --git a/src/jaegertracing/thrift/lib/rb/ext/thrift_native.c b/src/jaegertracing/thrift/lib/rb/ext/thrift_native.c
new file mode 100644
index 000000000..3430b7c25
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/rb/ext/thrift_native.c
@@ -0,0 +1,201 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <ruby.h>
+#include <bytes.h>
+#include <struct.h>
+#include <binary_protocol_accelerated.h>
+#include <compact_protocol.h>
+#include <memory_buffer.h>
+
+// cached classes/modules
+VALUE rb_cSet;
+VALUE thrift_module;
+VALUE thrift_bytes_module;
+VALUE thrift_types_module;
+
+// TType constants
+int TTYPE_STOP;
+int TTYPE_BOOL;
+int TTYPE_BYTE;
+int TTYPE_I16;
+int TTYPE_I32;
+int TTYPE_I64;
+int TTYPE_DOUBLE;
+int TTYPE_STRING;
+int TTYPE_MAP;
+int TTYPE_SET;
+int TTYPE_LIST;
+int TTYPE_STRUCT;
+
+// method ids
+ID validate_method_id;
+ID write_struct_begin_method_id;
+ID write_struct_end_method_id;
+ID write_field_begin_method_id;
+ID write_field_end_method_id;
+ID write_boolean_method_id;
+ID write_byte_method_id;
+ID write_i16_method_id;
+ID write_i32_method_id;
+ID write_i64_method_id;
+ID write_double_method_id;
+ID write_string_method_id;
+ID write_binary_method_id;
+ID write_map_begin_method_id;
+ID write_map_end_method_id;
+ID write_list_begin_method_id;
+ID write_list_end_method_id;
+ID write_set_begin_method_id;
+ID write_set_end_method_id;
+ID read_bool_method_id;
+ID read_byte_method_id;
+ID read_i16_method_id;
+ID read_i32_method_id;
+ID read_i64_method_id;
+ID read_string_method_id;
+ID read_binary_method_id;
+ID read_double_method_id;
+ID read_map_begin_method_id;
+ID read_map_end_method_id;
+ID read_list_begin_method_id;
+ID read_list_end_method_id;
+ID read_set_begin_method_id;
+ID read_set_end_method_id;
+ID read_struct_begin_method_id;
+ID read_struct_end_method_id;
+ID read_field_begin_method_id;
+ID read_field_end_method_id;
+ID keys_method_id;
+ID entries_method_id;
+ID write_field_stop_method_id;
+ID skip_method_id;
+ID write_method_id;
+ID read_all_method_id;
+ID read_into_buffer_method_id;
+ID force_binary_encoding_id;
+ID convert_to_utf8_byte_buffer_id;
+ID convert_to_string_id;
+
+// constant ids
+ID fields_const_id;
+ID transport_ivar_id;
+ID strict_read_ivar_id;
+ID strict_write_ivar_id;
+
+// cached symbols
+VALUE type_sym;
+VALUE name_sym;
+VALUE key_sym;
+VALUE value_sym;
+VALUE element_sym;
+VALUE class_sym;
+VALUE binary_sym;
+VALUE protocol_exception_class;
+
+void Init_thrift_native() {
+  // cached classes
+  thrift_module = rb_const_get(rb_cObject, rb_intern("Thrift"));
+  thrift_bytes_module = rb_const_get(thrift_module, rb_intern("Bytes"));
+  thrift_types_module = rb_const_get(thrift_module, rb_intern("Types"));
+  rb_cSet = rb_const_get(rb_cObject, rb_intern("Set"));
+  protocol_exception_class = rb_const_get(thrift_module, rb_intern("ProtocolException"));
+
+  // Init ttype constants
+  TTYPE_BOOL = FIX2INT(rb_const_get(thrift_types_module, rb_intern("BOOL")));
+  TTYPE_BYTE = FIX2INT(rb_const_get(thrift_types_module, rb_intern("BYTE")));
+  TTYPE_I16 = FIX2INT(rb_const_get(thrift_types_module, rb_intern("I16")));
+  TTYPE_I32 = FIX2INT(rb_const_get(thrift_types_module, rb_intern("I32")));
+  TTYPE_I64 = FIX2INT(rb_const_get(thrift_types_module, rb_intern("I64")));
+  TTYPE_DOUBLE = FIX2INT(rb_const_get(thrift_types_module, rb_intern("DOUBLE")));
+  TTYPE_STRING = FIX2INT(rb_const_get(thrift_types_module, rb_intern("STRING")));
+  TTYPE_MAP = FIX2INT(rb_const_get(thrift_types_module, rb_intern("MAP")));
+  TTYPE_SET = FIX2INT(rb_const_get(thrift_types_module, rb_intern("SET")));
+  TTYPE_LIST = FIX2INT(rb_const_get(thrift_types_module, rb_intern("LIST")));
+  TTYPE_STRUCT = FIX2INT(rb_const_get(thrift_types_module, rb_intern("STRUCT")));
+
+  // method ids
+  validate_method_id = rb_intern("validate");
+  write_struct_begin_method_id = rb_intern("write_struct_begin");
+  write_struct_end_method_id = rb_intern("write_struct_end");
+  write_field_begin_method_id = rb_intern("write_field_begin");
+  write_field_end_method_id = rb_intern("write_field_end");
+  write_boolean_method_id = rb_intern("write_bool");
+  write_byte_method_id = rb_intern("write_byte");
+  write_i16_method_id = rb_intern("write_i16");
+  write_i32_method_id = rb_intern("write_i32");
+  write_i64_method_id = rb_intern("write_i64");
+  write_double_method_id = rb_intern("write_double");
+  write_string_method_id = rb_intern("write_string");
+  write_binary_method_id = rb_intern("write_binary");
+  write_map_begin_method_id = rb_intern("write_map_begin");
+  write_map_end_method_id = rb_intern("write_map_end");
+  write_list_begin_method_id = rb_intern("write_list_begin");
+  write_list_end_method_id = rb_intern("write_list_end");
+  write_set_begin_method_id = rb_intern("write_set_begin");
+  write_set_end_method_id = rb_intern("write_set_end");
+  read_bool_method_id = rb_intern("read_bool");
+  read_byte_method_id = rb_intern("read_byte");
+  read_i16_method_id = rb_intern("read_i16");
+  read_i32_method_id = rb_intern("read_i32");
+  read_i64_method_id = rb_intern("read_i64");
+  read_string_method_id = rb_intern("read_string");
+  read_binary_method_id = rb_intern("read_binary");
+  read_double_method_id = rb_intern("read_double");
+  read_map_begin_method_id = rb_intern("read_map_begin");
+  read_map_end_method_id = rb_intern("read_map_end");  
+  read_list_begin_method_id = rb_intern("read_list_begin");
+  read_list_end_method_id = rb_intern("read_list_end");
+  read_set_begin_method_id = rb_intern("read_set_begin");
+  read_set_end_method_id = rb_intern("read_set_end");
+  read_struct_begin_method_id = rb_intern("read_struct_begin");
+  read_struct_end_method_id = rb_intern("read_struct_end");
+  read_field_begin_method_id = rb_intern("read_field_begin");
+  read_field_end_method_id = rb_intern("read_field_end");
+  keys_method_id = rb_intern("keys");
+  entries_method_id = rb_intern("entries");
+  write_field_stop_method_id = rb_intern("write_field_stop");
+  skip_method_id = rb_intern("skip");
+  write_method_id = rb_intern("write");
+  read_all_method_id = rb_intern("read_all");
+  read_into_buffer_method_id = rb_intern("read_into_buffer");
+  force_binary_encoding_id = rb_intern("force_binary_encoding");
+  convert_to_utf8_byte_buffer_id = rb_intern("convert_to_utf8_byte_buffer");
+  convert_to_string_id = rb_intern("convert_to_string");
+
+  // constant ids
+  fields_const_id = rb_intern("FIELDS");
+  transport_ivar_id = rb_intern("@trans");
+  strict_read_ivar_id = rb_intern("@strict_read");
+  strict_write_ivar_id = rb_intern("@strict_write");  
+
+  // cached symbols
+  type_sym = ID2SYM(rb_intern("type"));
+  name_sym = ID2SYM(rb_intern("name"));
+  key_sym = ID2SYM(rb_intern("key"));
+  value_sym = ID2SYM(rb_intern("value"));
+  element_sym = ID2SYM(rb_intern("element"));
+  class_sym = ID2SYM(rb_intern("class"));
+  binary_sym = ID2SYM(rb_intern("binary"));
+
+  Init_struct();
+  Init_binary_protocol_accelerated();
+  Init_compact_protocol();
+  Init_memory_buffer();
+}