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Ruby Android Market Scraper (Google Play) featuring high performance.

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README.markdown

Market Bot - High performance Ruby scraper for Google's Android Market

Market Bot is a high performance Ruby scraper for Google's Android Market with a simple to use API. It is built on top of Nokogiri and Typhoeus. Used in production to power www.droidmeter.com.

Dependencies

  • Nokogiri
  • Typhoeus

Installation

gem install market_bot

Simple API Examples

require 'rubygems'
require 'market_bot'

# Download/parse the leaderboard.
lb = MarketBot::Android::Leaderboard.new(:topselling_free, :game)
lb.update

# Download/parse the details for the first and last entries of the leaderboard.
first_app = MarketBot::Android::App.new(lb.results.first[:market_id])
last_app = MarketBot::Android::App.new(lb.results.last[:market_id])
first_app.update
last_app.update
puts "First place app (#{first_app.title}) price: #{first_app.price}"
puts "Last place app (#{last_app.title}) price: #{last_app.price}"

# Search for apps.
sq = MarketBot::Android::SearchQuery.new('donkeys')
sq.update
puts "Results found: #{sq.results.count}"

Advanced API Examples

require 'rubygems'
require 'market_bot'

# Create a reusable hydra object with 5 http workers.
hydra = Typhoeus::Hydra.new(:max_concurrency => 5)

# Download/parse the leaderboard.
lb = MarketBot::Android::Leaderboard.new(:topselling_free, :game, :hyda => hydra)
lb.update

# Download/parse the details for the first and last entries of the leaderboard using the batch API.
first_app = MarketBot::Android::App.new(lb.results.first[:market_id], :hydra => hydra)
last_app = MarketBot::Android::App.new(lb.results.last[:market_id], :hydra => hydra)
first_app.enqueue_update
last_app.enqueue_update do |a|
  # Callback example.  This block will execute on a successful hydra.run.
  puts "Callback... title: #{a.title}"
end
hydra.run

# You must manually check if an error occurred when using the batch API without callbacks.
puts "First place app (#{first_app.title}) price: #{first_app.price}" unless first_app.error
puts "Last place app (#{last_app.title}) price: #{last_app.price}" unless last_app.error

Contributing to Market Bot

  1. Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
  2. Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
  3. Fork the project.
  4. Start a feature/bugfix branch.
  5. Commit and push until you are happy with your contribution.
  6. Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
  7. Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

Copyright

Copyright (c) 2011 Chad Remesch. See LICENSE.txt for further details.

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