lua s3 client

the HTTP client based on https://github.com/pintsized/lua-resty-http

useage

upload content that client upload into this server, upload(content, content_type, object_name )

the argument object_name is optional, if you don't specified object_name this file name will automatically specified as filemd5 append with content type postfix like this http://buckname.s3.amazonaws.com/20160221/1943e3f9691387765_cc38a.obj

example code

` lua

local cnf = require "config.HTconfig" local upload = require "resty.upload" -- clone from https://github.com/openresty/lua-resty-upload local json = require "cjson" local s3_upload = require "resty.s3_upload"

local base64_decode = ngx.decode_base64 local base64_encode = ngx.encode_base64 local string_len = string.len local ngx_find = ngx.re.find local chunk_size = 1024*10 -- should be set to 4096 or 8192

local ngx_gsub = ngx.re.gsub local string_sub = string.sub

local form, err = upload:new(chunk_size) if not form then ngx.log(ngx.ERR, "failed to new upload: ", err) ngx.exit(500) end

local allowd_types = s3_upload.allowd_types local timeOut = cnf.S3_UPLOAD_TIMEOUT form:set_timeout(timeOcut) -- 1 se

local appender = '' local start_upload = false; local data_upload = false; local content_type = ''; local data_ready = false;

local uploader = s3_upload:new(cnf.AWS_accessKey,cnf.AWS_secretKey,cnf.CHATVOC_BUCKET,timeOut)

while true do local typ, res, err = form:read() if not typ then ngx.say(ngx.ERR,"failed to read: ", err) return end

if typ == "header" then content_type = res[2] ngx.log(ngx.INFO,"content_type: ", content_type) if content_type and allowd_types[content_type] then start_upload = true end

local inputFile = [[name="input"]] if res[1]=='Content-Disposition' and ngx_find(res[2] or '',inputFile) then data_upload = true end ngx.log(ngx.INFO,"header: ", json.encode(res))

elseif typ == "body" then if start_upload==true and res then appender = appender..res end

if data_upload == true and res then ngx.log(ngx.NOTICE,"body : ", res) data_upload = false end

elseif typ == "part_end" then

                        if appender ~= ''  then
                                local data_len  =        string_len(appender)
                                ngx.log(ngx.NOTICE,"start to upload ",content_type," len=" ,data_len)

                                if data_len>20 then

                                        local filename  =       ngx.md5(appender)

                                        local url,object_err    =       uploader:upload(appender,content_type)

                                        if not url then

                                                 ngx.log(ngx.ERR, "postfix or url err ",postfix , url)
                                        end

                                        if url then
                                                local show      =       json.encode({status="0";url=url})
                                                ngx.print (show)
                                                ngx.log(ngx.NOTICE,"success : ",show)
                                        else
                                                ngx.print (json.encode({status="507";url=url;err=err}))
                                                ngx.log(ngx.ERR,"request return : ",err)
                                        end
                                else
                                        local reason    =       " body too short  " .. content_type
                                        ngx.log(ngx.NOTICE,reason)
                                        ngx.print (json.encode({status="507" ;err=reason}))
                                end
                                appender                =       ''
                                start_upload    =       false
                        end

    elseif typ == "eof" then
         break
    end
end

    Copyright and License
    =====================
    
    This module is licensed under the BSD license.
    
    Copyright (C) 2012-2014, by James Marlowe (jamesmarlowe) <jameskmarlowe@gmail.com>, Lumate LLC.
    
    All rights reserved.
    
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
    
    * Redistributions of source code must retain the above copyright notice, this
      list of conditions and the following disclaimer.
    
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    
    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    
    [Back to TOC](#table-of-contents)
    
    See Also
    ========
    * the ngx_lua module: http://wiki.nginx.org/HttpLuaModule
    * the [lua-resty-hmac](https://github.com/jamesmarlowe/lua-resty-hmac) library
    
    [Back to TOC](#table-of-contents)