Dynamic Routing with Circuit - Rubyfuza

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Twitter @lgleasain Github lgleasain www.lancegleason.com www.polyglotprogrammincinc.com [email protected] 1 Friday, February 8, 13

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Introductions 2 Friday, February 8, 13

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? 6 Friday, February 8, 13

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Why?? 13 Friday, February 8, 13

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Heroku 14 Friday, February 8, 13

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www.honeybadger.com www.jackel.com www.bees.com 15 Friday, February 8, 13

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www.honeybadger.com => /badgers www.jackel.com => /jaeckels www.bees.com => /bees 16 Friday, February 8, 13

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• Need to be able to quickly add new domains. 18 Friday, February 8, 13

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• Need to be able to quickly add new domains. • Need to be able to specify domains dynamically 18 Friday, February 8, 13

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• Need to be able to quickly add new domains. • Need to be able to specify domains dynamically • Need to be able to have arbitrary nesting 18 Friday, February 8, 13

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• Need to be able to quickly add new domains. • Need to be able to specify domains dynamically • Need to be able to have arbitrary nesting • Need to use different middlewares 18 Friday, February 8, 13

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• Need to be able to quickly add new domains. • Need to be able to specify domains dynamically • Need to be able to have arbitrary nesting • Need to use different middlewares • We don’t have budget for devops. 18 Friday, February 8, 13

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The beast at Tanagra 20 Friday, February 8, 13

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Rails 21 Friday, February 8, 13

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• match '/*', to: 'site#proxy' 22 Friday, February 8, 13

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• match '/*', to: 'site#proxy' • Ugly DB lookup 22 Friday, February 8, 13

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• match '/*', to: 'site#proxy' • Ugly DB lookup • Rails only. 22 Friday, February 8, 13

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• match '/*', to: 'site#proxy' • Ugly DB lookup • Rails only. • Will need to have multiple instances. 22 Friday, February 8, 13

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Rack 23 Friday, February 8, 13

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• Write Rack Middleware 24 Friday, February 8, 13

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• Write Rack Middleware • Implement DB Lookup 24 Friday, February 8, 13

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• Write Rack Middleware • Implement DB Lookup • Re-invent the wheel. 24 Friday, February 8, 13

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• Write Rack Middleware • Implement DB Lookup • Re-invent the wheel. • Will need multiple instances to use different middleware. 24 Friday, February 8, 13

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Rack Middlware 26 Friday, February 8, 13

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class MyRackMiddleware def initialize(appl) @appl = appl end def call(env) [404, {}, “Kiteo, his eyes closed”] end end 27 Friday, February 8, 13

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Warning...shameless pet project promotion ahead 28 Friday, February 8, 13

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Redir https://github.com/springbot/redir 29 Friday, February 8, 13

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Passbook-IOS https://github.com/frozon/passbook 30 Friday, February 8, 13

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Circuit 32 Friday, February 8, 13

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Circuit • Initially ﬁlled a need for a custom CMS • Preloads conﬁguration • As fast as * routes • Doesn’t require Rails 33 Friday, February 8, 13

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# app/behaviors/render_ok.cru require './my_middleware' run proc {|env| [200, {'Content-‐Type' => 'text/plain'}, ['OK']] } 34 Friday, February 8, 13

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# app/behaviors/render_ok.cru require './my_middleware' run proc {|env| [200, {'Content-‐Type' => 'text/plain'}, ['OK']] } # app/models/site.rb class Site include Circuit::Storage::Sites::MongoidStore::Site has_one :root, :class_name => "Node" end # app/models/node.rb class Node include Circuit::Storage::Nodes::MongoidStore::Node belongs_to :site, :inverse_of => :root end 34 Friday, February 8, 13

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$ > @site = Site.new(host: "example.com", aliases: ["www.example.com"]) $ > @site.save $ => true 35 Friday, February 8, 13

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$ > @site = Site.new(host: "example.com", aliases: ["www.example.com"]) $ > @site.save $ => true $ > @node = Node.new(site: @site, slug: nil, behavior_klass: "RenderOk") $ > @node.save $ => true $ > @node.root? # the nil slug and defined site indicates the root $ => true $ > @node.behavior $ => RenderOk $ > @node.behavior.class $ => Module $ > @node.behavior.included_modules $ => [Circuit::Behavior] 35 Friday, February 8, 13

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# app/behaviors/page.cru use Circuit::Middleware::Rewriter do |request| content_id = request.route.last.content.id ["", "/contents/#{content_id}"] end # config/routes.rb Rails.application.routes.draw do resources :contents end 36 Friday, February 8, 13

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Circuit Needs you for 38 Friday, February 8, 13

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Circuit Needs you for • Redis support 38 Friday, February 8, 13

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Circuit Needs you for • Redis support • Active Record 38 Friday, February 8, 13

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Circuit Needs you for • Redis support • Active Record • Riak 38 Friday, February 8, 13

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Circuit Needs you for • Redis support • Active Record • Riak • Goliath 38 Friday, February 8, 13

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Circuit Needs you for • Redis support • Active Record • Riak • Goliath • Feedback 38 Friday, February 8, 13

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Twitter @lgleasain Github lgleasain www.lancegleason.com www.polyglotprogrammincinc.com [email protected] 39 Friday, February 8, 13