Class: JRuby::Lint::Libraries::Cache

Inherits:
Object
  • Object
show all
Defined in:
lib/jruby/lint/libraries.rb

Instance Method Summary collapse

Constructor Details

#initialize(cache_dir = nil) ⇒ Cache

Returns a new instance of Cache.



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# File 'lib/jruby/lint/libraries.rb', line 9

def initialize(cache_dir = nil)
  @cache_dir = cache_dir || ENV['JRUBY_LINT_CACHE'] ||
    (defined?(Gem.user_dir) && File.join(Gem.user_dir, 'lint')) || Dir::tmpdir
  FileUtils.mkdir_p(@cache_dir) unless File.directory?(@cache_dir)
end

Instance Method Details

#fetch(name) ⇒ Object 



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# File 'lib/jruby/lint/libraries.rb', line 15

def fetch(name)
  filename = filename_for(name)
  if File.file?(filename) && !stale?(filename)
    File.read(filename)
  else
    read_from_wiki(name, filename)
  end
end

#filename_for(name) ⇒ Object 



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# File 'lib/jruby/lint/libraries.rb', line 28

def filename_for(name)
  name = File.basename(name)
  File.join(@cache_dir, File.extname(name).empty? ? "#{name}.html" : name)
end

#read_from_wiki(name, filename) ⇒ Object 



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# File 'lib/jruby/lint/libraries.rb', line 37

def read_from_wiki(name, filename)
  content = nil
  uri = Net::HTTP.start('wiki.jruby.org', 80) do |http|
    URI.parse http.head(name =~ %r{^/} ? name : "/#{name}")['Location']
  end
  if uri.host == "github.com"
    Net::HTTP.new(uri.host, uri.port).tap do |http|
      if uri.scheme == "https"
        http.use_ssl = true
        http.verify_mode = OpenSSL::SSL::VERIFY_PEER
        # gd_bundle.crt from https://certs.godaddy.com/anonymous/repository.seam
        http.ca_file = File.expand_path('../github.crt', __FILE__)
      end
      http.start do
        response = http.get(uri.path)
        content = response.body
        File.open(filename, "w") do |f|
          f << content
        end
      end
    end
  end
  raise "Unknown location '#{uri}' for page '#{name}'" unless content
  content
rescue => e
  raise "Error while reading from wiki: #{e.message}\nPlease try again later."
end

#stale?(filename) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jruby/lint/libraries.rb', line 33

def stale?(filename)
  File.mtime(filename) < Time.now - 24 * 60 * 60
end

#store(name, content) ⇒ Object 



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# File 'lib/jruby/lint/libraries.rb', line 24

def store(name, content)
  File.open(filename_for(name), "w") {|f| f << content }
end