Class: CertOpenDataVisualizer::Visualize

Inherits:
Object
  • Object
show all
Defined in:
lib/cert_open_data_visualizer/visualize.rb

Constant Summary collapse

CSV_DATA_URL = 
"http://pilvilinna.cert.fi/opendata/autoreporter/csv.zip"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Visualize

Returns a new instance of Visualize.



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 12

def initialize
  @cacher = DummyCacher.new
end

Instance Attribute Details

#all_data ⇒ Object

Returns the value of attribute all_data.



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 9

def all_data
  @all_data
end

#cacher ⇒ Object

Returns the value of attribute cacher.



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 9

def cacher
  @cacher
end

Instance Method Details

#download ⇒ Object 



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 31

def download
  puts "Downloading, may take a while depending on your connection"
  data = HTTParty.get(CSV_DATA_URL).body
  puts "Done"
  write_tmp_file("cert.zip", data)
end

#maybe_download ⇒ Object 



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 23

def maybe_download
  if @cacher.file_exists?("cert.zip")
    puts "File found in cache, not downloading"
  else
    download
  end
end

#maybe_extract_and_list_files ⇒ Object 



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 42

def maybe_extract_and_list_files
  if @cacher.file_exists? "cert.zip" and not @cacher.file_exists? "certfi_autoreporter_opendata_2006.csv"
    @cacher.unzip_file("cert.zip")
  end
  @cacher.find_files_matching("*.csv")
end

#maybe_read_and_merge_files(files) ⇒ Object 



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 49

def maybe_read_and_merge_files(files)
  if @cacher.file_exists? "all_data.json"
    @all_data = JSON.parse(File.read(@cacher.get_from_cache("all_data.json")))
  else
    @all_data = get_csvs(files)
    write_tmp_file("all_data.json", @all_data.to_json)
  end
  @all_data
end

#parse ⇒ Object 



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 16

def parse
  maybe_download
  files = maybe_extract_and_list_files
  maybe_read_and_merge_files(files)
  self
end

#write_tmp_file(filename, contents) ⇒ Object 



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# File 'lib/cert_open_data_visualizer/visualize.rb', line 38

def write_tmp_file(filename, contents)
  @cacher.write_file_to_cache filename, contents
end