Class: Naver::Searchad::Api::Core::DownloadCommand

Inherits:
ApiCommand show all
Defined in:
lib/naver/searchad/api/core/download_command.rb

Constant Summary collapse

OK_STATUSES = 
[200, 201, 206]

Constants inherited from ApiCommand

ApiCommand::ERROR_CODE_MAPPING, ApiCommand::JSON_CONTENT_TYPE

Instance Attribute Summary collapse

Attributes inherited from ApiCommand

#decode_snake_case, #request_object

Attributes inherited from HttpCommand

#body, #header, #method, #options, #params, #query, #url

Instance Method Summary collapse

Methods inherited from ApiCommand

#check_status, #decode_response_body, #initialize

Methods inherited from HttpCommand

#check_status, #decode_response_body, #execute, #initialize, #process_response

Methods included from Logging

#logger

Constructor Details

This class inherits a constructor from Naver::Searchad::Api::Core::ApiCommand

Instance Attribute Details

#download_dest ⇒ Object

Returns the value of attribute download_dest.



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# File 'lib/naver/searchad/api/core/download_command.rb', line 11

def download_dest
  @download_dest
end

Instance Method Details

#_execute(client) ⇒ Object 



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# File 'lib/naver/searchad/api/core/download_command.rb', line 33

def _execute(client)
  request_header = {}
  apply_request_options(request_header)
  download_offset = nil

  http_res = client.get(url.to_s,
                        query: nil,
                        header: request_header,
                        follow_redirect: true) do |res, chunk|
    status = res.http_header.status_code.to_i
    next unless OK_STATUSES.include?(status)

    download_offset ||= (status == 206 ? @offset : 0)
    download_offset += chunk.bytesize

    if download_offset - chunk.bytesize == @offset
      next_chunk = chunk
    else
      chunk_index = @offset - (download_offset - chunk.bytesize)
      next_chunk = chunk.byteslice(chunk_index..-1)
      next if next_chunk.nil?
    end

    @download_io.write(next_chunk)
    @offset += next_chunk.bytesize
  end

  @download_io.flush

  if @close_io_on_finish
    result = nil
  else
    result = @download_io
  end
  check_status(http_res.status.to_i, http_res.header, http_res.body)
  logger.debug("DownloadCommand: Success")
  success(result)
rescue => e
  @download_io.flush
  logger.debug("DownloadCommand: Error - #{e.inspect}")
  error(e)
end

#prepare! ⇒ Object 



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# File 'lib/naver/searchad/api/core/download_command.rb', line 13

def prepare!
  @state = :start
  @download_url = nil
  @offset = 0

  if download_dest.is_a?(String)
    @download_io = File.open(download_dest, 'wb')
    @close_io_on_finish = true
  else
    @download_io = StringIO.new('', 'wb')
    @close_io_on_finish = false
  end

  super
end

#release! ⇒ Object 



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# File 'lib/naver/searchad/api/core/download_command.rb', line 29

def release!
  @download_io.close if @close_io_on_finish
end