Write image proxy server for LINE Bot in Go

Evan Lin
Chatb10ts meetup 聊天機器人小小聚 10 @ 天瓏書局 Coding Space
https://chatbots.kktix.cc/events/meetup-010

Transcript

1. Write image proxy server for
   LINE Bot in Go
   LINE Technical Evangelist
   Evan Lin
   

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3. NEW API Update
   

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4. https://developers.line.biz/en/news/#line-login-new-parameters-and-properties-added-2019-06-26
   

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5. https://login-tester-evan.herokuapp.com/
   

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6. https://www.evanlin.com/til-line-login/
   Tutorial article (Chinese)
   Open Source Packages:
   • https://github.com/kkdai/line-social-sdk-go
   • https://github.com/kkdai/line-login-go
   

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7. Why we need a Image-Proxy Server
   

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8. A story about pet adoption
   http://www.evanlin.com/petsneedme-helping-adoption-pet/
   

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9. Pet Adoption : Open Data
   • http://data.coa.gov.tw/Service/OpenData/TransService.aspx?UnitId=QcbUEzN6E6DL&$top=50&$skip=0
   

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10. Pet Adoption : Open Data
    • http://data.coa.gov.tw/Service/OpenData/TransService.aspx?UnitId=QcbUEzN6E6DL&$top=50&$skip=0
    

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11. Our problem
    

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12. Let’s use Heroku as our Image Proxy Server
    • Default support HTTPS
    • No persistent storage
    • Will shutdown 6 hours per day (in free-tier,
    no prediction)
    

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13. Solution: Image Proxy Server
    

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14. Repo and how to use it
    https://github.com/kkdai/img-cache-server
    

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15. Repo and how to use it (Cont.)
    

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16. Demo
    

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