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--
-- 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.
--
require 'TTransport'
THttpTransport = TTransportBase:new{
__type = 'THttpTransport',
path = '/',
wBuf = '',
rBuf = '',
CRLF = '\r\n',
VERSION = version,
isServer = true
}
function THttpTransport:new(obj)
if ttype(obj) ~= 'table' then
error(ttype(self) .. 'must be initialized with a table')
end
-- Ensure a transport is provided
if not obj.trans then
error('You must provide ' .. ttype(self) .. ' with a trans')
end
return TTransportBase.new(self, obj)
end
function THttpTransport:isOpen()
return self.trans:isOpen()
end
function THttpTransport:open()
return self.trans:open()
end
function THttpTransport:close()
return self.trans:close()
end
function THttpTransport:readAll(len)
return self:read(len)
end
function THttpTransport:read(len)
if string.len(self.rBuf) == 0 then
self:_readMsg()
end
if len > string.len(self.rBuf) then
local val = self.rBuf
self.rBuf = ''
return val
end
local val = string.sub(self.rBuf, 0, len)
self.rBuf = string.sub(self.rBuf, len+1)
return val
end
function THttpTransport:_readMsg()
while true do
self.rBuf = self.rBuf .. self.trans:read(4)
if string.find(self.rBuf, self.CRLF .. self.CRLF) then
break
end
end
if not self.rBuf then
self.rBuf = ""
return
end
self:getLine()
local headers = self:_parseHeaders()
if not headers then
self.rBuf = ""
return
end
local length = tonumber(headers["Content-Length"])
if length then
length = length - string.len(self.rBuf)
self.rBuf = self.rBuf .. self.trans:readAll(length)
end
if self.rBuf == nil then
self.rBuf = ""
end
end
function THttpTransport:getLine()
local a,b = string.find(self.rBuf, self.CRLF)
local line = ""
if a and b then
line = string.sub(self.rBuf, 0, a-1)
self.rBuf = string.sub(self.rBuf, b+1)
end
return line
end
function THttpTransport:_parseHeaders()
local headers = {}
repeat
local line = self:getLine()
for key, val in string.gmatch(line, "([%w%-]+)%s*:%s*(.+)") do
if headers[key] then
local delimiter = ", "
if key == "Set-Cookie" then
delimiter = "; "
end
headers[key] = headers[key] .. delimiter .. tostring(val)
else
headers[key] = tostring(val)
end
end
until string.find(line, "^%s*$")
return headers
end
function THttpTransport:write(buf, len)
if len and len < string.len(buf) then
buf = string.sub(buf, 0, len)
end
self.wBuf = self.wBuf .. buf
end
function THttpTransport:writeHttpHeader(content_len)
if self.isServer then
local header = "HTTP/1.1 200 OK" .. self.CRLF
.. "Server: Thrift/" .. self.VERSION .. self.CRLF
.. "Access-Control-Allow-Origin: *" .. self.CRLF
.. "Content-Type: application/x-thrift" .. self.CRLF
.. "Content-Length: " .. content_len .. self.CRLF
.. "Connection: Keep-Alive" .. self.CRLF .. self.CRLF
self.trans:write(header)
else
local header = "POST " .. self.path .. " HTTP/1.1" .. self.CRLF
.. "Host: " .. self.trans.host .. self.CRLF
.. "Content-Type: application/x-thrift" .. self.CRLF
.. "Content-Length: " .. content_len .. self.CRLF
.. "Accept: application/x-thrift " .. self.CRLF
.. "User-Agent: Thrift/" .. self.VERSION .. " (Lua/THttpClient)"
.. self.CRLF .. self.CRLF
self.trans:write(header)
end
end
function THttpTransport:flush()
-- If the write fails we still want wBuf to be clear
local tmp = self.wBuf
self.wBuf = ''
self:writeHttpHeader(string.len(tmp))
self.trans:write(tmp)
self.trans:flush()
end
THttpTransportFactory = TTransportFactoryBase:new{
__type = 'THttpTransportFactory'
}
function THttpTransportFactory:getTransport(trans)
if not trans then
terror(TProtocolException:new{
message = 'Must supply a transport to ' .. ttype(self)
})
end
return THttpTransport:new{trans = trans}
end
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