Added example.
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agolybev
@@ -0,0 +1,248 @@
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class ServiceConverter
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@@convert_timeout = Rails.configuration.timeout
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@@document_converter_url = Rails.configuration.urlConverter
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@@document_storage_url = Rails.configuration.urlStorage
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@@convert_params = '?url=%s&outputtype=%s&filetype=%s&title=%s&key=%s&vkey=%s'
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@@max_try = 3
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class << self
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def get_converted_uri(document_uri, from_ext, to_ext, document_revision_id, is_async)
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converted_document_uri = nil
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responce_from_convert_service = send_request_to_convert_service(document_uri, from_ext, to_ext, document_revision_id, is_async)
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file_result = responce_from_convert_service['FileResult']
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error_element = file_result['Error']
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if error_element != nil
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process_convert_service_responce_error(error_element.to_i)
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end
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is_end_convert = file_result['EndConvert'].downcase == 'true'
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percent = file_result['Percent'].to_i
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if is_end_convert
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converted_document_uri = file_result['FileUrl']
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percent = 100
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else
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percent = percent >= 100 ? 99 : percent;
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end
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return percent, converted_document_uri
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end
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def get_external_uri(content, content_length, content_type, document_revision_id)
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validate_key = generate_validate_key(document_revision_id, nil)
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url_to_storage = @@document_storage_url + (@@convert_params % ['', '', '', '', document_revision_id, validate_key])
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if content_type == nil
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content_type = 'application/octet-stream'
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end
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uri = URI.parse(url_to_storage)
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http = Net::HTTP.new(uri.host, uri.port)
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if url_to_storage.start_with?('https')
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http.use_ssl = true
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http.verify_mode = OpenSSL::SSL::VERIFY_NONE
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end
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req = Net::HTTP::Post.new(uri.request_uri, {'Content-Type' => content_type , 'Content-Length' => content_length.to_s })
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req.body = content
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res = http.request(req)
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data = res.body
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if data == nil
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raise 'Could not get an answer'
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end
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document_response = Hash.from_xml(data.gsub('\n', ''))
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percent, external_uri = get_response_uri(document_response)
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external_uri
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end
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def generate_revision_id(expected_key)
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require 'zlib'
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if expected_key.length > 20
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expected_key = (Zlib.crc32 expected_key).to_s
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end
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key = expected_key.gsub(/[^0-9a-zA-Z.=]/, '_')
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key[(key.length - [key.length, 20].min)..key.length]
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end
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def generate_validate_key(document_revision_id, user_ip)
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if document_revision_id == nil
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return ''
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end
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expire = Time.now.to_i * 1000
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key = generate_revision_id(document_revision_id)
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key_id = get_key
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user_count = '0'
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ip = user_ip != nil ? '' : user_ip
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key = '{"expire": "\/Date(%s)\/", "key" : "%s", "key_id" : "%s", "user_count" : %s, "ip" : "%s"}' %
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[expire.to_s, key.to_s, key_id.to_s, user_count, ip]
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Signature.create(key, get_skey)
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end
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def get_key
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Rails.configuration.tenantId
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end
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def get_skey
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Rails.configuration.key
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end
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def send_request_to_convert_service(document_uri, from_ext, to_ext, document_revision_id, is_async)
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from_ext = from_ext == nil ? File.extname(document_uri) : from_ext
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title = File.basename(URI.parse(document_uri).path)
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title = title == nil ? UUID.generate.to_s : title
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document_revision_id = document_revision_id.empty? ? document_uri : document_revision_id
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document_revision_id = generate_revision_id(document_revision_id)
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validate_key = generate_validate_key(document_revision_id, nil)
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url_to_converter = @@document_converter_url +
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(@@convert_params % [URI::encode(document_uri), to_ext.delete('.'), from_ext.delete('.'), title, document_revision_id, validate_key])
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if is_async
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url_to_converter += '&async=true'
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end
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data = nil
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count_try = 0
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while count_try < @@max_try
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begin
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count_try += 1
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uri = URI.parse(url_to_converter)
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http = Net::HTTP.new(uri.host, uri.port)
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if url_to_converter.start_with?('https')
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http.use_ssl = true
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http.verify_mode = OpenSSL::SSL::VERIFY_NONE
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end
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http.read_timeout = @@convert_timeout
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req = Net::HTTP::Get.new(uri.request_uri)
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res = http.request(req)
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data = res.body
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break
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rescue TimeoutError
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#try again
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rescue => ex
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raise ex.message
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end
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end
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if count_try == @@max_try && data == nil
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raise 'timeout'
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end
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Hash.from_xml(data.gsub('\n', ''))
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end
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def process_convert_service_responce_error(error_code)
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error_message = 'unknown error'
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case error_code
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when -8
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error_message = 'Error occurred in the ConvertService.ashx: Error document VKey'
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when -7
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error_message = 'Error occurred in the ConvertService.ashx: Error document request'
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when -6
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error_message = 'Error occurred in the ConvertService.ashx: Error database'
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when -5
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error_message = 'Error occurred in the ConvertService.ashx: Error unexpected guid'
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when -4
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error_message = 'Error occurred in the ConvertService.ashx: Error download error'
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when -3
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error_message = 'Error occurred in the ConvertService.ashx: Error convertation error'
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when -2
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error_message = 'Error occurred in the ConvertService.ashx: Error convertation timeout'
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when -1
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error_message = 'Error occurred in the ConvertService.ashx: Error convertation unknown'
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when 0
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#public const int c_nErrorNo = 0
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else
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error_message = 'ErrorCode = ' + error_code.to_s
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end
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raise error_message
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end
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def get_response_uri(document_response)
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file_result = document_response['FileResult']
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if file_result == nil
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raise 'Invalid answer format'
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end
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error_element = file_result['Error']
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if error_element != nil
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process_convert_service_responce_error(error_element.to_i)
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end
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end_convert_element = file_result['EndConvert']
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if end_convert_element == nil
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raise 'Invalid answer format'
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end
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is_end_convert = end_convert_element.downcase == 'true'
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result_percent = 0
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response_uri = ''
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if is_end_convert
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file_url_element = file_result['FileUrl']
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if file_url_element == nil
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raise 'Invalid answer format'
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end
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response_uri = file_url_element
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result_percent = 100
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else
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percent_element = file_result['Percent']
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if percent_element != nil
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result_percent = percent_element.to_i
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end
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result_percent = result_percent >= 100 ? 99 : result_percent
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end
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return result_percent, response_uri
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end
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end
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end
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