initial commit

.dockerignore

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+.git

.gitignore

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+.DS_Store

Dockerfile

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+FROM ruby:2.5-slim
+
+COPY Gemfile Gemfile.lock /usr/src/app/
+WORKDIR /usr/src/app
+
+RUN apt-get update && apt-get -y install libgmp3-dev ruby-dev build-essential libsqlite3-dev && \
+ bundle install && \
+ apt-get autoremove -y --purge && \
+ apt-get remove -y --auto-remove --purge ruby-dev libgmp3-dev build-essential libsqlite3-dev && \
+ apt-get clean && \
+ rm -rvf /root/* /root/.gem* /var/cache/*
+
+COPY . /usr/src/app
+RUN chmod +x /usr/src/app/startup.sh
+
+# helpful when trying to update gems -> bundle update, remove the Gemfile.lock, start ruby
+# RUN bundle update
+# RUN rm -vf /usr/src/app/Gemfile.lock
+
+EXPOSE 3000
+ENTRYPOINT ["bash","/usr/src/app/startup.sh"]

Gemfile

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+source 'https://rubygems.org'
+
+
+gem 'thin'
+
+# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
+gem 'rails', '4.2.10'
+# Use sqlite3 as the database for Active Record
+gem 'sqlite3'
+# Use SCSS for stylesheets
+gem 'sass-rails', '~> 5.0'
+# Use Uglifier as compressor for JavaScript assets
+gem 'uglifier', '>= 1.3.0'
+# Use CoffeeScript for .coffee assets and views
+gem 'coffee-rails', '~> 4.1.0'
+# See https://github.com/rails/execjs#readme for more supported runtimes
+gem 'therubyracer', platforms: :ruby
+
+gem 'activesupport'
+
+# Use jquery as the JavaScript library
+gem 'jquery-rails'
+# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
+gem 'turbolinks'
+# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
+gem 'jbuilder', '~> 2.0'
+# bundle exec rake doc:rails generates the API under doc/api.
+gem 'sdoc', '~> 0.4.0', group: :doc
+
+# Use ActiveModel has_secure_password
+# gem 'bcrypt', '~> 3.1.7'
+
+# Use Unicorn as the app server
+# gem 'unicorn'
+
+# Use Capistrano for deployment
+# gem 'capistrano-rails', group: :development
+
+group :development, :test do
+ # Call 'byebug' anywhere in the code to stop execution and get a debugger console
+ gem 'byebug'
+end
+
+group :development do
+ # Access an IRB console on exception pages or by using <%= console %> in views
+ gem 'web-console', '~> 2.0'
+
+ # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
+ gem 'spring'
+end
+

Gemfile.lock

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+GEM
+ remote: https://rubygems.org/
+ specs:
+ actionmailer (4.2.10)
+ actionpack (= 4.2.10)
+ actionview (= 4.2.10)
+ activejob (= 4.2.10)
+ mail (~> 2.5, >= 2.5.4)
+ rails-dom-testing (~> 1.0, >= 1.0.5)
+ actionpack (4.2.10)
+ actionview (= 4.2.10)
+ activesupport (= 4.2.10)
+ rack (~> 1.6)
+ rack-test (~> 0.6.2)
+ rails-dom-testing (~> 1.0, >= 1.0.5)
+ rails-html-sanitizer (~> 1.0, >= 1.0.2)
+ actionview (4.2.10)
+ activesupport (= 4.2.10)
+ builder (~> 3.1)
+ erubis (~> 2.7.0)
+ rails-dom-testing (~> 1.0, >= 1.0.5)
+ rails-html-sanitizer (~> 1.0, >= 1.0.3)
+ activejob (4.2.10)
+ activesupport (= 4.2.10)
+ globalid (>= 0.3.0)
+ activemodel (4.2.10)
+ activesupport (= 4.2.10)
+ builder (~> 3.1)
+ activerecord (4.2.10)
+ activemodel (= 4.2.10)
+ activesupport (= 4.2.10)
+ arel (~> 6.0)
+ activesupport (4.2.10)
+ i18n (~> 0.7)
+ minitest (~> 5.1)
+ thread_safe (~> 0.3, >= 0.3.4)
+ tzinfo (~> 1.1)
+ arel (6.0.4)
+ binding_of_caller (0.7.3)
+ debug_inspector (>= 0.0.1)
+ builder (3.2.3)
+ byebug (9.1.0)
+ coffee-rails (4.1.1)
+ coffee-script (>= 2.2.0)
+ railties (>= 4.0.0, < 5.1.x)
+ coffee-script (2.4.1)
+ coffee-script-source
+ execjs
+ coffee-script-source (1.12.2)
+ concurrent-ruby (1.0.5)
+ crass (1.0.3)
+ debug_inspector (0.0.3)
+ erubis (2.7.0)
+ execjs (2.7.0)
+ ffi (1.9.18)
+ globalid (0.4.1)
+ activesupport (>= 4.2.0)
+ i18n (0.9.1)
+ concurrent-ruby (~> 1.0)
+ jbuilder (2.7.0)
+ activesupport (>= 4.2.0)
+ multi_json (>= 1.2)
+ jquery-rails (4.3.1)
+ rails-dom-testing (>= 1, < 3)
+ railties (>= 4.2.0)
+ thor (>= 0.14, < 2.0)
+ json (1.8.6)
+ libv8 (3.16.14.19-x86_64-linux)
+ loofah (2.1.1)
+ crass (~> 1.0.2)
+ nokogiri (>= 1.5.9)
+ mail (2.7.0)
+ mini_mime (>= 0.1.1)
+ mini_mime (1.0.0)
+ mini_portile2 (2.3.0)
+ minitest (5.10.3)
+ multi_json (1.12.2)
+ nokogiri (1.8.1)
+ mini_portile2 (~> 2.3.0)
+ rack (1.6.8)
+ rack-test (0.6.3)
+ rack (>= 1.0)
+ rails (4.2.10)
+ actionmailer (= 4.2.10)
+ actionpack (= 4.2.10)
+ actionview (= 4.2.10)
+ activejob (= 4.2.10)
+ activemodel (= 4.2.10)
+ activerecord (= 4.2.10)
+ activesupport (= 4.2.10)
+ bundler (>= 1.3.0, < 2.0)
+ railties (= 4.2.10)
+ sprockets-rails
+ rails-deprecated_sanitizer (1.0.3)
+ activesupport (>= 4.2.0.alpha)
+ rails-dom-testing (1.0.9)
+ activesupport (>= 4.2.0, < 5.0)
+ nokogiri (~> 1.6)
+ rails-deprecated_sanitizer (>= 1.0.1)
+ rails-html-sanitizer (1.0.3)
+ loofah (~> 2.0)
+ railties (4.2.10)
+ actionpack (= 4.2.10)
+ activesupport (= 4.2.10)
+ rake (>= 0.8.7)
+ thor (>= 0.18.1, < 2.0)
+ rake (12.3.0)
+ rb-fsevent (0.10.2)
+ rb-inotify (0.9.10)
+ ffi (>= 0.5.0, < 2)
+ rdoc (4.3.0)
+ ref (2.0.0)
+ sass (3.5.4)
+ sass-listen (~> 4.0.0)
+ sass-listen (4.0.0)
+ rb-fsevent (~> 0.9, >= 0.9.4)
+ rb-inotify (~> 0.9, >= 0.9.7)
+ sass-rails (5.0.7)
+ railties (>= 4.0.0, < 6)
+ sass (~> 3.1)
+ sprockets (>= 2.8, < 4.0)
+ sprockets-rails (>= 2.0, < 4.0)
+ tilt (>= 1.1, < 3)
+ sdoc (0.4.2)
+ json (~> 1.7, >= 1.7.7)
+ rdoc (~> 4.0)
+ spring (2.0.2)
+ activesupport (>= 4.2)
+ sprockets (3.7.1)
+ concurrent-ruby (~> 1.0)
+ rack (> 1, < 3)
+ sprockets-rails (3.2.1)
+ actionpack (>= 4.0)
+ activesupport (>= 4.0)
+ sprockets (>= 3.0.0)
+ sqlite3 (1.3.13)
+ therubyracer (0.12.3)
+ libv8 (~> 3.16.14.15)
+ ref
+ thor (0.20.0)
+ thread_safe (0.3.6)
+ tilt (2.0.8)
+ turbolinks (5.0.1)
+ turbolinks-source (~> 5)
+ turbolinks-source (5.0.3)
+ tzinfo (1.2.4)
+ thread_safe (~> 0.1)
+ uglifier (4.0.2)
+ execjs (>= 0.3.0, < 3)
+ web-console (2.3.0)
+ activemodel (>= 4.0)
+ binding_of_caller (>= 0.7.2)
+ railties (>= 4.0)
+ sprockets-rails (>= 2.0, < 4.0)
+
+PLATFORMS
+ ruby
+
+DEPENDENCIES
+ activesupport
+ byebug
+ coffee-rails (~> 4.1.0)
+ jbuilder (~> 2.0)
+ jquery-rails
+ rails (= 4.2.10)
+ sass-rails (~> 5.0)
+ sdoc (~> 0.4.0)
+ spring
+ sqlite3
+ therubyracer
+ turbolinks
+ uglifier (>= 1.3.0)
+ web-console (~> 2.0)
+
+BUNDLED WITH
+ 1.16.1

README.md

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+# Amazon ECS Workshop
+
+This is part of an Amazon ECS workshop at https://ecsworkshop.com

Rakefile

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+# Add your own tasks in files placed in lib/tasks ending in .rake,
+# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
+
+require File.expand_path('../config/application', __FILE__)
+
+Rails.application.load_tasks

app/assets/javascripts/application.js

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+// This is a manifest file that'll be compiled into application.js, which will include all the files
+// listed below.
+//
+// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
+// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
+//
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// compiled file.
+//
+// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
+// about supported directives.
+//
+//= require jquery
+//= require jquery_ujs
+//= require turbolinks
+//= require_tree .

app/assets/stylesheets/application.css

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+/*
+ * This is a manifest file that'll be compiled into application.css, which will include all the files
+ * listed below.
+ *
+ * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
+ * or any plugin's vendor/assets/stylesheets directory can be referenced here using a relative path.
+ *
+ * You're free to add application-wide styles to this file and they'll appear at the bottom of the
+ * compiled file so the styles you add here take precedence over styles defined in any styles
+ * defined in the other CSS/SCSS files in this directory. It is generally better to create a new
+ * file per style scope.
+ *
+ *= require_tree .
+ *= require_self
+ */

app/controllers/application_controller.rb

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+require 'net/http'
+
+class ApplicationController < ActionController::Base
+ # Prevent CSRF attacks by raising an exception.
+ # For APIs, you may want to use :null_session instead.
+ protect_from_forgery with: :exception
+
+ # Example endpoint that calls the backend nodejs api
+ def index
+ begin
+ url = URI.parse(backend_addr)
+ req = Net::HTTP::Get.new(url.to_s)
+ res = Net::HTTP.start(url.host, url.port) {|http|
+ http.request(req)
+ }
+
+ if res.code == '200'
+ @text = res.body
+ else
+ @text = "no backend found"
+ end
+
+ crystalurl = URI.parse(crystal_addr)
+ crystalreq = Net::HTTP::Get.new(crystalurl.to_s)
+ crystalres = Net::HTTP.start(crystalurl.host, crystalurl.port) {|http|
+ http.request(crystalreq)
+ }
+
+ if crystalres.code == '200'
+ @crystal = crystalres.body
+ else
+ @crystal = "no backend found"
+ end
+
+ rescue
+ @text = "no backend found"
+ @crystal = "no backend found"
+ end
+ end
+
+ # This endpoint is used for health checks. It should return a 200 OK when the app is up and ready to serve requests.
+ def health
+ render plain: "OK"
+ end
+
+ def crystal_addr
+ crystal_addr = ENV["BACKEND_API"]
+ # The address will be of the form, http:https://172.17.0.5:5432, so we add a trailing slash
+ crystal_addr.sub(/^http:/, 'http:') + "/crystal"
+ end
+
+ def backend_addr
+ backend_addr = ENV["BACKEND_API"]
+ # The address will be of the form, http:https://172.17.0.5:5432, so we add a trailing slash
+ backend_addr.sub(/^http:/, 'http:') + "/"
+ end
+
+ before_action :discover_availability_zone
+ before_action :code_hash
+
+ def discover_availability_zone
+ @az = ENV["AZ"]
+ end
+
+ def code_hash
+ @code_hash = ENV["CODE_HASH"]
+ end
+
+ def custom_header
+ response.headers['Cache-Control'] = 'max-age=86400, public'
+ end
+end

app/helpers/application_helper.rb

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+module ApplicationHelper
+end