Class: DataKitten::Fetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/data_kitten/fetcher.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url) ⇒ Fetcher

Returns a new instance of Fetcher.



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# File 'lib/data_kitten/fetcher.rb', line 15

def initialize(url)
  @url = url
end

Instance Attribute Details

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/data_kitten/fetcher.rb', line 5

def url
  @url
end

Class Method Details

.wrap(url_or_fetcher) ⇒ Object 



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# File 'lib/data_kitten/fetcher.rb', line 7

def self.wrap(url_or_fetcher)
  if url_or_fetcher.is_a?(self)
    url_or_fetcher
  else
    new(url_or_fetcher)
  end
end

Instance Method Details

#as_json ⇒ Object 



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# File 'lib/data_kitten/fetcher.rb', line 41

def as_json
  JSON.parse(body) if response
rescue JSON::ParserError
  nil
end

#body ⇒ Object 



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# File 'lib/data_kitten/fetcher.rb', line 37

def body
  response if response
end

#code ⇒ Object 



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# File 'lib/data_kitten/fetcher.rb', line 33

def code
  response ? response.code : @code
end

#content_type ⇒ Object 



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# File 'lib/data_kitten/fetcher.rb', line 47

def content_type
  response.headers[:content_type] if response
end

#content_type_format ⇒ Object 



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# File 'lib/data_kitten/fetcher.rb', line 51

def content_type_format
  if val = content_type
    val.split(';').first
  end
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/data_kitten/fetcher.rb', line 19

def exists?
  if @requested
    ok?
  else
    RestClient.head(url).code == 200
  end
rescue RestClient::ExceptionWithResponse => error
  false
end

#html? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/data_kitten/fetcher.rb', line 61

def html?
  !!(content_type_format =~ %r{^text/html}i)
end

#json? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/data_kitten/fetcher.rb', line 65

def json?
  !!(content_type_format =~ %r{^application/json}i)
end

#ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/data_kitten/fetcher.rb', line 29

def ok?
  code == 200
end

#to_s ⇒ Object 



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# File 'lib/data_kitten/fetcher.rb', line 57

def to_s
  url.to_s
end