Notestore wrapper updated for oauth, add transforms from ruby method names to camel-case names in the thrift interface

1 files changed, 426 insertions, 0 deletions

diff --git a/vendor/thrift/protocol/compact_protocol.rb b/vendor/thrift/protocol/compact_protocol.rb
new file mode 100644
index 0000000..ede82f2
--- /dev/null
+++ b/vendor/thrift/protocol/compact_protocol.rb
@@ -0,0 +1,426 @@
+# 
+# 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.
+# 
+
+module Thrift
+  class CompactProtocol < BaseProtocol
+
+    PROTOCOL_ID = [0x82].pack('c').unpack('c').first
+    VERSION = 1
+    VERSION_MASK = 0x1f
+    TYPE_MASK = 0xE0
+    TYPE_SHIFT_AMOUNT = 5
+
+    TSTOP = ["", Types::STOP, 0]
+
+    # 
+    # All of the on-wire type codes.
+    # 
+    class CompactTypes
+      BOOLEAN_TRUE   = 0x01
+      BOOLEAN_FALSE  = 0x02
+      BYTE           = 0x03
+      I16            = 0x04
+      I32            = 0x05
+      I64            = 0x06
+      DOUBLE         = 0x07
+      BINARY         = 0x08
+      LIST           = 0x09
+      SET            = 0x0A
+      MAP            = 0x0B
+      STRUCT         = 0x0C
+      
+      def self.is_bool_type?(b)
+        (b & 0x0f) == BOOLEAN_TRUE || (b & 0x0f) == BOOLEAN_FALSE
+      end
+      
+      COMPACT_TO_TTYPE = {
+        Types::STOP   => Types::STOP,
+        BOOLEAN_FALSE => Types::BOOL,
+        BOOLEAN_TRUE  => Types::BOOL,
+        BYTE          => Types::BYTE,
+        I16           => Types::I16,
+        I32           => Types::I32,
+        I64           => Types::I64,
+        DOUBLE        => Types::DOUBLE,
+        BINARY        => Types::STRING,
+        LIST          => Types::LIST,
+        SET           => Types::SET,
+        MAP           => Types::MAP,
+        STRUCT        => Types::STRUCT
+      }
+
+      TTYPE_TO_COMPACT = {
+        Types::STOP           => Types::STOP,
+        Types::BOOL           => BOOLEAN_TRUE,
+        Types::BYTE           => BYTE,
+        Types::I16            => I16,
+        Types::I32            => I32,
+        Types::I64            => I64,
+        Types::DOUBLE         => DOUBLE,
+        Types::STRING         => BINARY,
+        Types::LIST           => LIST,
+        Types::SET            => SET,
+        Types::MAP            => MAP,
+        Types::STRUCT         => STRUCT
+      }
+      
+      def self.get_ttype(compact_type)
+        val = COMPACT_TO_TTYPE[compact_type & 0x0f]
+        raise "don't know what type: #{compact_type & 0x0f}" unless val
+        val
+      end
+      
+      def self.get_compact_type(ttype)
+        val = TTYPE_TO_COMPACT[ttype]
+        raise "don't know what type: #{ttype & 0x0f}" unless val
+        val
+      end
+    end
+
+    def initialize(transport)
+      super(transport)
+
+      @last_field = [0]
+      @boolean_value = nil
+
+      # Pre-allocated read buffer for read_double().
+      @rbuf = "\0" * 8
+      @rbuf.force_encoding("BINARY") if @rbuf.respond_to?(:force_encoding)
+    end
+
+    def write_message_begin(name, type, seqid)
+      write_byte(PROTOCOL_ID)
+      write_byte((VERSION & VERSION_MASK) | ((type << TYPE_SHIFT_AMOUNT) & TYPE_MASK))
+      write_varint32(seqid)
+      write_string(name)
+      nil
+    end
+
+    def write_struct_begin(name)
+      @last_field.push(0)
+      nil
+    end
+
+    def write_struct_end
+      @last_field.pop
+      nil
+    end
+
+    def write_field_begin(name, type, id)
+      if type == Types::BOOL
+        # we want to possibly include the value, so we'll wait.
+        @boolean_field = [type, id]
+      else
+        write_field_begin_internal(type, id)
+      end
+      nil
+    end
+
+    # 
+    # The workhorse of writeFieldBegin. It has the option of doing a 
+    # 'type override' of the type header. This is used specifically in the 
+    # boolean field case.
+    # 
+    def write_field_begin_internal(type, id, type_override=nil)
+      last_id = @last_field.pop
+      
+      # if there's a type override, use that.
+      typeToWrite = type_override || CompactTypes.get_compact_type(type)
+
+      # check if we can use delta encoding for the field id
+      if id > last_id && id - last_id <= 15
+        # write them together
+        write_byte((id - last_id) << 4 | typeToWrite)
+      else
+        # write them separate
+        write_byte(typeToWrite)
+        write_i16(id)
+      end
+
+      @last_field.push(id)
+      nil
+    end
+
+    def write_field_stop
+      write_byte(Types::STOP)
+    end
+
+    def write_map_begin(ktype, vtype, size)
+      if (size == 0)
+        write_byte(0)
+      else
+        write_varint32(size)
+        write_byte(CompactTypes.get_compact_type(ktype) << 4 | CompactTypes.get_compact_type(vtype))
+      end
+    end
+
+    def write_list_begin(etype, size)
+      write_collection_begin(etype, size)
+    end
+
+    def write_set_begin(etype, size)
+      write_collection_begin(etype, size);
+    end
+
+    def write_bool(bool)
+      type = bool ? CompactTypes::BOOLEAN_TRUE : CompactTypes::BOOLEAN_FALSE
+      unless @boolean_field.nil?
+        # we haven't written the field header yet
+        write_field_begin_internal(@boolean_field.first, @boolean_field.last, type)
+        @boolean_field = nil
+      else
+        # we're not part of a field, so just write the value.
+        write_byte(type)
+      end
+    end
+
+    def write_byte(byte)
+      @trans.write([byte].pack('c'))
+    end
+
+    def write_i16(i16)
+      write_varint32(int_to_zig_zag(i16))
+    end
+
+    def write_i32(i32)
+      write_varint32(int_to_zig_zag(i32))
+    end
+
+    def write_i64(i64)
+      write_varint64(long_to_zig_zag(i64))
+    end
+
+    def write_double(dub)
+      @trans.write([dub].pack("G").reverse)
+    end
+
+    def write_string(str)
+      write_varint32(str.length)
+      @trans.write(str)
+    end
+
+    def read_message_begin
+      protocol_id = read_byte()
+      if protocol_id != PROTOCOL_ID
+        raise ProtocolException.new("Expected protocol id #{PROTOCOL_ID} but got #{protocol_id}")
+      end
+      
+      version_and_type = read_byte()
+      version = version_and_type & VERSION_MASK
+      if (version != VERSION)
+        raise ProtocolException.new("Expected version #{VERSION} but got #{version}");
+      end
+      
+      type = (version_and_type >> TYPE_SHIFT_AMOUNT) & 0x03
+      seqid = read_varint32()
+      messageName = read_string()
+      [messageName, type, seqid]
+    end
+
+    def read_struct_begin
+      @last_field.push(0)
+      ""
+    end
+
+    def read_struct_end
+      @last_field.pop()
+      nil
+    end
+
+    def read_field_begin
+      type = read_byte()
+
+      # if it's a stop, then we can return immediately, as the struct is over.
+      if (type & 0x0f) == Types::STOP
+        TSTOP
+      else
+        field_id = nil
+
+        # mask off the 4 MSB of the type header. it could contain a field id delta.
+        modifier = (type & 0xf0) >> 4
+        if modifier == 0
+          # not a delta. look ahead for the zigzag varint field id.
+          @last_field.pop
+          field_id = read_i16()
+        else
+          # has a delta. add the delta to the last read field id.
+          field_id = @last_field.pop + modifier
+        end
+
+        # if this happens to be a boolean field, the value is encoded in the type
+        if CompactTypes.is_bool_type?(type)
+          # save the boolean value in a special instance variable.
+          @bool_value = (type & 0x0f) == CompactTypes::BOOLEAN_TRUE
+        end
+
+        # push the new field onto the field stack so we can keep the deltas going.
+        @last_field.push(field_id)
+        ["", CompactTypes.get_ttype(type & 0x0f), field_id]
+      end
+    end
+
+    def read_map_begin
+      size = read_varint32()
+      key_and_value_type = size == 0 ? 0 : read_byte()
+      [CompactTypes.get_ttype(key_and_value_type >> 4), CompactTypes.get_ttype(key_and_value_type & 0xf), size]
+    end
+
+    def read_list_begin
+      size_and_type = read_byte()
+      size = (size_and_type >> 4) & 0x0f
+      if size == 15
+        size = read_varint32()
+      end
+      type = CompactTypes.get_ttype(size_and_type)
+      [type, size]
+    end
+
+    def read_set_begin
+      read_list_begin
+    end
+
+    def read_bool
+      unless @bool_value.nil?
+        bv = @bool_value
+        @bool_value = nil
+        bv
+      else
+        read_byte() == CompactTypes::BOOLEAN_TRUE
+      end
+    end
+
+    def read_byte
+      val = trans.read_byte
+      if (val > 0x7f)
+        val = 0 - ((val - 1) ^ 0xff)
+      end
+      val
+    end
+
+    def read_i16
+      zig_zag_to_int(read_varint32())
+    end
+
+    def read_i32
+      zig_zag_to_int(read_varint32())
+    end
+
+    def read_i64
+      zig_zag_to_long(read_varint64())
+    end
+
+    def read_double
+      trans.read_into_buffer(@rbuf, 8)
+      val = @rbuf.reverse.unpack('G').first
+      val
+    end
+
+    def read_string
+      size = read_varint32()
+      trans.read_all(size)
+    end
+    
+    
+    private
+    
+    # 
+    # Abstract method for writing the start of lists and sets. List and sets on 
+    # the wire differ only by the type indicator.
+    # 
+    def write_collection_begin(elem_type, size)
+      if size <= 14
+        write_byte(size << 4 | CompactTypes.get_compact_type(elem_type))
+      else
+        write_byte(0xf0 | CompactTypes.get_compact_type(elem_type))
+        write_varint32(size)
+      end
+    end
+
+    def write_varint32(n)
+      # int idx = 0;
+      while true
+        if (n & ~0x7F) == 0
+          # i32buf[idx++] = (byte)n;
+          write_byte(n)
+          break
+          # return;
+        else
+          # i32buf[idx++] = (byte)((n & 0x7F) | 0x80);
+          write_byte((n & 0x7F) | 0x80)
+          n = n >> 7
+        end
+      end
+      # trans_.write(i32buf, 0, idx);
+    end
+
+    SEVEN_BIT_MASK = 0x7F
+    EVERYTHING_ELSE_MASK = ~SEVEN_BIT_MASK
+
+    def write_varint64(n)
+      while true
+        if (n & EVERYTHING_ELSE_MASK) == 0 #TODO need to find a way to make this into a long...
+          write_byte(n)
+          break
+        else
+          write_byte((n & SEVEN_BIT_MASK) | 0x80)
+          n >>= 7
+        end
+      end
+    end
+    
+    def read_varint32()
+      read_varint64()
+    end
+    
+    def read_varint64()
+      shift = 0
+      result = 0
+      while true
+        b = read_byte()
+        result |= (b & 0x7f) << shift
+        break if (b & 0x80) != 0x80
+        shift += 7
+      end
+      result
+    end
+    
+    def int_to_zig_zag(n)
+      (n << 1) ^ (n >> 31)
+    end
+    
+    def long_to_zig_zag(l)
+      # puts "zz encoded #{l} to #{(l << 1) ^ (l >> 63)}"
+      (l << 1) ^ (l >> 63)
+    end
+    
+    def zig_zag_to_int(n)
+      (n >> 1) ^ -(n & 1)
+    end
+    
+    def zig_zag_to_long(n)
+      (n >> 1) ^ -(n & 1)
+    end
+  end
+
+  class CompactProtocolFactory < BaseProtocolFactory
+    def get_protocol(trans)
+      CompactProtocol.new(trans)
+    end
+  end
+end