require 'aws-sdk-v1'
  s3 = AWS::S3.new({
    :s3_endpoint => 'mtmss.com',
    :use_ssl => false,
    :s3_force_path_style => true,
    :access_key_id => '****Access Key****',
    :secret_access_key => '****Access Secret****'})

  bucket = s3.buckets.create('bucket_name')

  s3.buckets.each do |bucket|
    puts bucket.name
  end

  bucket.set_acl_public_read

  bucket.set_acl_private

  bucket.exists?

  object_name_one = 'object1'
  object_content = 'test'
  obj = bucket.objects[object_name_one].write(object_content)

  obj.delete

  object_name_for_test_upload = 'object2'
  upload_file_path = 'filepath'
  obj_upload = bucket.objects[object_name_for_test_upload]
  obj_upload.write(:file => upload_file_path)

  File.open('output', 'wb') do |file|
    obj_upload.read do |chunk|
      file.write(chunk)
    end
  end

  temp_url_for_read = obj_upload.url_for(:read, {:expire => 600})
  puts temp_url_for_read

  bucket.clear!

  bucket.delete

  post_info_str = s3.presigned_post_info(
    "share", # bucket名字
    {
    :expires => 300,                                        # 签名有效期，单位秒
    :metadata => {"x-amz-meta-server" => "Hello Server!"},  # 服务器端自定义的变量，必须以"x-amz-meta-"为前缀
    :callback_url => "http://mtmsscb.mtmss.cn",             # 上传成功后的回调url
    :callback_body => "name=${fname}&bucket=${bucket}&key=${key}&hash=${etag}&size=${fsize}&server=${x-amz-meta-server}&client=${x-amz-meta-client}",  # 上传成功后回调的内容，可以引用魔法变量和自定义变量
    :callback_body_type => "application/x-www-form-urlencoded",  # 上传成功后回调的Content-Type
    :callback_host => "mtmsscb.mtmss.com"                   # 上传成功后回调http header中的host
    }).to_json

  # 这里使用ruby的rest-client做为示例
  client_info = {
    "x-amz-meta-client" => "Hello Client!",  # 客户端自定义变量，mss遵守标准S3协议，post表单最后一项必须是对象内容，因此客户端自定义的变量要写在value之前
    :key => "Key is lena.jpg",                      # 对象名字
    :value => File.new("./lena.jpg", 'rb'),  # 待上传的对象内容
  }
  post_info_obj = JSON.parse(post_info_str)  # post_info_str为服务器端生成的签名表单对象，包括url和form，其中form为表单内容，url为上传要用到的url
  RestClient.post post_info_obj["url"], post_info_obj["form"].merge(client_info)  # 与客户端自定义的表单内容合并后使用rest-client上传