如何透過 Warbler 在 JVM 上部署 Rails 應用

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1. 如何透過 Warbler 在 JVM 上部署 Rails 應⽤用
   Jason Lee (LeeChSien)
   chsienlee@gmail.com
   2015 / 09 / 11
   

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2. 關於我
   • 李致賢 (Jason Lee) a.k.a LeeChSien
   • 即將畢業於政治⼤大學 (NCCU CS Master)
   • as a Ruby Developer since 2012
   • Web Developer in
   

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3. 想⽤用 Ruby / Rails 來開發產品, 但是...
   

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4. 客⼾戶的環境
   你想像中
   

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5. 客⼾戶的環境
   實際的情形
   

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6. 客⼾戶的環境
   • 環境沒有 Ruby Runtime
   • 產品需要封裝 (保護 Source Code)
   • Windows Only….
   

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7. Charles Nutter @ Taipei (2014/04/29)
   

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8. 嘗試使⽤用 JRuby ？
   

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9. JRuby
   Write once, run anywhere
   

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10. JRuby
    

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11. 如何使⽤用 JRuby 開發？
    

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12. JRuby 版本⽐比較
    JRuby 1.7.0 Ruby 1.9.3
    JRuby 1.7.4 Ruby 2.0
    JRuby 9.0.0.0 Ruby 2.2
    

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13. 使⽤用相容的 Gems
    • For example：activerecord-jdbc-adapter
    

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14. Migrate from MRI Rails 4.2
    • byebug -> disable
    • web-console -> disable
    • binding_of_caller
    • therubyracer -> therubyrhino
    

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15. C Extension Alternatives
    • Nokogiri - pure java version
    • RMagick - RMagick4J
    • therubyracer - therubyrhino
    JRuby Wiki：C-Extension-Alternatives
    

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16. Thread-safety
    • Rails 本⾝身是 Thread-safe
    • 第三⽅方 Gems 必須是 Thread-safe
    • Sidekiq Wiki：Problems-and-Troubleshooting#threading
    • 你的程式碼必須是 Thread-safe
    

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17. Thread-safety
    • Global variables
    • Class variables
    • Class instance variables
    

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18. Race condition
    

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20. Memoization
    

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23. Mutex Lock
    

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25. Archive Your App with Warbler
    

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26. Warbler
    • Warbler 將你的 App 打包為可執⾏行的 .war files
    https://github.com/jruby/warbler
    • Start Server？
    • Rake task？
    

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27. Warbler
    • Configuration
    • warble.rb
    • web.xml.erb
    Warbler 1.4.X JRuby 1.7.X
    Warbler 2.0.0 rc JRuby 9.0.0.0
    

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28. Compile .rb to .class
    warble.rb
    

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29. Compile .rb to .class
    

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30. JRuby-rack-worker
    web.xml.erb
    https://github.com/kares/jruby-rack-worker
    

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31. Unlimited Strength Crypto
    • Install the "Unlimited Strength" policy files from
    Oracle
    • Disable the crypto restriction programmatically
    JRuby Wiki：UnlimitedStrengthCrypto
    

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32. Tzinfo-data
    • No timezone data source could be found.

    To resolve this, either install TZInfo::Data
    

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33. Demo
    https://github.com/LeeChSien/rails-warbler-boilerplate
    

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34. Another Choice - TorqueBox
    

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35. Thank you!
    

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