Class: Urifetch::Strategy::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/urifetch/strategy/base.rb

Direct Known Subclasses

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Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uri, match_data, route_data = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/urifetch/strategy/base.rb', line 9

def initialize(uri,match_data,route_data={})
  @uri = uri
  @match_data = match_data
  @route_data = route_data
  @response = Response.new(['0',''],route_data[:strategy_key],{})
end

Instance Attribute Details

#match_data ⇒ Object (readonly)

Returns the value of attribute match_data.



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# File 'lib/urifetch/strategy/base.rb', line 7

def match_data
  @match_data
end

#response ⇒ Object (readonly)

Returns the value of attribute response.



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# File 'lib/urifetch/strategy/base.rb', line 7

def response
  @response
end

#route_data ⇒ Object (readonly)

Returns the value of attribute route_data.



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# File 'lib/urifetch/strategy/base.rb', line 7

def route_data
  @route_data
end

#uri ⇒ Object (readonly)

Returns the value of attribute uri.



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# File 'lib/urifetch/strategy/base.rb', line 7

def uri
  @uri
end

Instance Method Details

#execute! ⇒ Object 



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# File 'lib/urifetch/strategy/base.rb', line 16

def execute!
  perform_request
  process_request if response.status == ["200","OK"]
  response
end

#perform_request ⇒ Object 



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# File 'lib/urifetch/strategy/base.rb', line 22

def perform_request
  begin
    timeout(30) { @request  = open(@uri.to_s,'rb') }
    set_status  @request.status
  rescue OpenURI::HTTPError => error
    set_status error.message.split(" ",2)
  rescue SocketError => error
    set_status ["400","Bad Request"]
  rescue Errno::ENOENT => error
    set_status ["404","File not Found"]
  rescue Errno::ECONNREFUSED => error
    set_status ["401","Unauthorized"]
  rescue Errno::EADDRINUSE
    set_status ["401","Unauthorized"]
  rescue RuntimeError => error
    set_status ["400","Bad Request"]
  rescue Exception => e
    set_status ["500","Server Error",e]
  rescue TimeOutError
    set_status ["408","Request Timeout"]
  else
    set_status ["200","OK"]
  end
end

#process_request ⇒ Object 



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# File 'lib/urifetch/strategy/base.rb', line 47

def process_request
          
  # Start by setting the URI
  set :url, uri.to_s
  
  doc = Nokogiri::HTML.parse(@request)
          
  # Open Auth data
  if og = OpenGraph.parse(doc)
    set :url,         og.url, override: true
    set :title,       og.title
    set :image,       og.image
    set :description, og.description
  end
          
  # Custom CSS data
  unless set? :title
    t = doc.css('title').first
    set :title, t.nil? ? match_data[0] : t.content.strip
  end
  
  favicon = doc.css('link[rel="shortcut icon"], link[rel="icon shortcut"], link[rel="shortcut"], link[rel="icon"]').first
  favicon = favicon.nil? ? nil : favicon['href'].strip
  if favicon
    if favicon.match(/^https?:\/\//i).nil?
      favicon = uri.scheme + "://" + uri.host.sub(/\/$/,"") + "/" + favicon.sub(/^\//,"")
    end
    set :favicon, favicon
  end
  
end