Class: UR::MetadataCache

Inherits:
Object
  • Object
show all
Defined in:
lib/ur/metadata_cache.rb

Overview

Responsible for retrieving metadata and populating one or more UR::Product objects

Constant Summary collapse

METADATA_PRODUCT_URL = 
'http://metadata.ur.se/products'

Class Method Summary collapse

Class Method Details

.find(id) ⇒ Object

Retrieve one or more products



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# File 'lib/ur/metadata_cache.rb', line 16

def self.find(id)
  if id.instance_of?(Array)
    valid_ids = []
    
    id.each do |id|
      if id.to_s.match(/^1\d{5}$/)
        valid_ids << id 
      else
        raise UR::InvalidProductID
      end
    end
    
    url = METADATA_PRODUCT_URL + ".json?ur_product_ids=#{valid_ids.join(',')}"
  else
    raise UR::InvalidProductID if !id.to_s.match(/^1\d{5}$/)
    url = METADATA_PRODUCT_URL + "/#{id}.json"
  end
  
  begin
    # Get the JSON response from the Metadata Cache
    response = Yajl::HttpStream.get(URI.parse(url))      
  rescue Yajl::HttpStream::HttpError
    # Raise an invalid response exception if there was 
    # a problem with the HTTP request
    raise UR::InvalidResponse
  end
  
  # Return the response as a parsed JSON object
  response
end