- Gem for checking whether the target webpage is updated.
- For not only webpage but also image, css and js (resources)
$ vim Gemfile
# Add a line
# gem 'webpage_update_checker'
$ bundle install
or
$ gem install webpage_update_checkerrequire '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) #=> fb2eeb524e6b5637ef7fa4bed48f1d67require 'webpage_update_checker'
checker = WebpageUpdateChecker::Client.new
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 +0000require 'webpage_update_checker'
checker = WebpageUpdateChecker::Client.new
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) #=> 200require '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)Lazy Timecomparision means to compare by not accurate datetime but ABOUT datetime- For example, when latest
Last-Modifiedis2008-03-18 01:05:01 +0000andlazy_secondsis set as '60 * 5', if now gettingLast-Modifiedis2008-03-18 01:07:01 +0000it does NOT regard as 'Updated'- if now getting
Last-Modifiedis2008-03-18 01:08:02 +0000it DOES regard as 'Updated'
- if now getting
require 'webpage_update_checker'
checker = WebpageUpdateChecker::Client.new
current_time_object = WebpageUpdateChecker::Methods::LastModified.new(uri: 'http://www.ne.jp/asahi/pursuits/ootsuki/pc/X68k/x680x0.xhtml')
previous_comparision_value = '2008-03-18 01:00:01 +0900'
lazy_seconds = 60 * 5
checker.lazy_time_updated?(current_time_object, previous_comparison_value: previous_comparision_value, lazy_seconds: lazy_seconds) #=> falseYou can use these Methods.
- LastModified
- Md5
- Sha1
- Sha256
- Sha384
- Sha512
- HttpStatusCode
You can use these methods in each Methods.
#updated?(checked_object, previous_comparison_value:)#=> true or false
#lazy_time_updated?(checked_object, previous_comparison_value:, lazy_seconds:)#=> true or false
#current_comparison_value(checked_object)#=> object such as Time (LastModified), String (MD5, SHA512...) or Integer (HTTP status code)
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.
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