Class: EventMachine::ShortURL::Google

Inherits:
Object
  • Object
show all
Includes:
Deferrable
Defined in:
lib/em-shorturl/google.rb

Overview

The Google class is the driver for URLShortener to use Google’s API for URL shortening.

As a deferrable, instances accept callback procs in calls to callback() and errback(). Callbacks are provided arguments shorturl and self, while errbacks are provided err_string and self.

Constant Summary collapse

API_URL =

Specifies the API URL for shortening URLs

"https://www.googleapis.com/urlshortener/v1/url"

Instance Method Summary collapse

Constructor Details

#initialize(account = {}) ⇒ Google

Initializes the driver instance, optionally with account information for making requests on behalf of an account. Benefits of using an api key include higher request limits and stat tracking.

The account argument may take the following options:

:apikey     Defines an apikey to use for the request



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# File 'lib/em-shorturl/google.rb', line 31

def initialize(={})
    @deferrable_args = [self]
    @account_apikey = [:apikey]
end

Instance Method Details

#shorten(url) ⇒ Object

Performs the request of shortening a URL asynchronously. Returns self, which is a deferrable. This allows a usage like the following:

EM::ShortURL::Google.new.shorten('http://google.com').callback do |u,d|
    puts "Shorturl: #{u}"
end



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# File 'lib/em-shorturl/google.rb', line 45

def shorten(url)
    params = get_request_parameters(url)
    request = EventMachine::HttpRequest.new(API_URL).post(params)
    request.callback(&method(:on_success))
    request.errback(&method(:on_error))
    self
end