Webpage Update Checker

  • Gem for checking whether the target webpage is updated.
    • For not only webpage but also image, css and js (resources)

Gem Version CircleCI

Usage

$ vim Gemfile
# Add a line
# gem 'webpage_update_checker'
$ bundle install

or

$ gem install webpage_update_checker

require 'webpage_update_checker'

checker = WebpageUpdateChecker::Client.new
target_page_md5 = WebpageUpdateChecker::Methods::Md5.new(uri: 'http://www.ne.jp/asahi/pursuits/ootsuki/pc/X68k/x680x0.xhtml')

checker.current_comparison_value(target_page_md5) #=> fb2eeb524e6b5637ef7fa4bed48f1d67
checker.updated?(target_page_md5, previous_comparison_value: 'fb2eeb524e6b5637ef7fa4bed48f1d67') #=> false (not updated)
checker.updated?(target_page_md5, previous_comparison_value: '12345678901234567890123456789012') #=> true (updated)

target_page_last_modified = WebpageUpdateChecker::Methods::LastModified.new(uri: 'http://www.ne.jp/asahi/pursuits/ootsuki/pc/X68k/x680x0.xhtml')
checker.current_comparison_value(target_page_last_modified) #=> 2008-03-17 16:05:01 +0000

target_page_http_status_code = WebpageUpdateChecker::Methods::HttpStatusCode.new(uri: 'http://www.ne.jp/asahi/pursuits/ootsuki/pc/X68k/x680x0.xhtml')
checker.current_comparison_value(target_page_http_status_code) #=> 200

Methods

You can use these Methods.

  • LastModified
  • Md5
  • Sha1
  • Sha256
  • Sha384
  • Sha512
  • HttpStatusCode

methods

You can use these methods in each Methods.

  • #updated?(checked_object, previous_comparison_value:)
    • #=> true or false
  • #current_comparison_value(checked_object)
    • #=> object such as Time (LastModified), String (MD5, SHA512...) or Integer (HTTP status code)

Note

On v1.3.0, the method name that current_diff_value was changed to current_comparison_value and the keyword argument name that previous_diff_value was changed to previous_comparison_value.

So please use current_comparison_value method and previous_comparison_value keyword argument becuase current_diff_value and previous_diff_value are deprecated now.

TODO

LICENSE