A talk for modern web 2016 to introduce how to use Golang to write a smart IM Bot

1. Modern Web 2016
Using Golang to build smart IM Bot
Evan Lin @LinkerNetworkshttp://goo.gl/IYv1BU

2. About Me
• Cloud Architect @ Linker
Networks
• Top 10 Taiwan Golang open
source contributor (github
award)
• Developer, Curator, Blogger

3. Agenda
• What is IM Bot
• Introduce Golang
• Build Line Bot
• Build FB Bot
• Build a smart IM Bot
• Future
• Q&A

4. Instant Message Bot

5. What is IM?
(Instant Messenger)

6. What is IM Bot?

7. How to choose
programming language
• Easy to Write
• Fast in Run and
Compile
• Powerful Concurrency
• Powerful Built-in
Toolchain

8. Pokemon GO

9. Programming GO

10. What is Go(lang)
• Create by Google
• Design by
• Ken Thompson
• Rob Pike
• Robert Griesemer,
• Feature:
• Compiled
• Statically Typed
• Garbage Collection

11. Why Golang
• GO Fast!
• Compile Fast!
• Run Fast!

12. Go is Fast

14. Why Golang
• Make programming
fun again.

15. gofmt / goimport

16. Before we look code

17. Before we look code (cont)

20. After file save..

21. Go Vet
Analysis on source code and reports
suspicious constructs.

22. Go Lint
Coding style suggestions

23. GoRoutine:
Multiple Thread in C

24. GoRoutine:
Multiple Thread in Go

25. GoRoutine and Channel:
Multiple Thread in Go

26. GoRoutine and Channel:
Multiple Thread in Go

27. GoRoutine and Channel:
Multiple Thread in Go

28. https://talks.golang.org/2014/gocon-tokyo.slide

29. Golang - HTTPS Server

30. Golang - HTTPS Server
Supported
HTTP/2
After Go 1.6

31. Golang - Built-In Test

32. Golang - Built-In Benchmark Test

33. GoMobile
Original Work Flow
Golang
Sample Console
Sometime Failed
Work
Failed on Some Model

34. GoMobile
Using Golang in Mobile
Golang
GoMobile
Package
Golang
Sample Console

35. Go Playground:
Write A snippet Go code online
https://play.golang.org/

36. Go JSON Tutorial

37. Go JSON Tutorial

38. Go JSON Tutorial

39. Golang IDE
(Integrated Development Environment)

40. Golang IDE
(Integrated Development Environment)
VIM-GO

41. Golang IDE
(Integrated Development Environment)
Visual Studio Code Go Extension

42. Let’s build IM Bot.

43. Wait!
What is IM Bot working
flow?

44. IM Bot Working Flow:
HTTPS Webhook

45. How to prepare HTTPS
server?
• Prepare a machine with
public IP
• Install related OS and
runtime for your
programming language
• Purchase CA signed for
SSL Key ($$)
• Run a HTTPS Webserver
(Apache or Go native
Web Server)

46. Introduce Heroku
(Platform As A Service)
Free-tier

47. Heroku
(Platform As A Service)
• Free-tier:
• USES AN ACCOUNT-
BASED POOL
• OF FREE DYNO HOURS
• SLEEPS AFTER 30 MINS OF
INACTIVITY
• CUSTOM DOMAINS
• HTTPS connection (for
non-custom domains)
• Support one click deploy

48. IM Bot Working Flow
(update)
HTTPS Webhook

49. Build IM Line Bot

50. Step 1: Request Line Bot Trial Account
Apply Line Bot trial account here
(Only 1 per Line Account)

51. Step 2: Deploy to Heroku by
one click
Link : https://github.com/kkdai/LineBotTemplate

52. Step 2: Deploy to Heroku by
one click
Remember this address

53. Step 3. Fill your Heroku App
Callback address to Line Bot
• Copy your app
address from
Heroku to Line
Dashboard.
• It will be something
like “https://
xxxxxx.herokuapp.
com:443/callback”
Fill your app dress here

54. Step 4. Get related Line Bot
info for Heroku App setting
• Need copy
following
variable:
• Channel ID
• Channel Secret
• MID
Need copy those three

55. Step 5. Fill your Line Bot
Information to Heroku Variables
• In Heroku [Dashboard] ->
[Settings]-> [Config
Variables]
• Create following variables:
• ChannelID
• ChannelSecret
• MID
• Fill with you just got from
Line Bot Dashboard.

56. Send a Image to user
Parse bot request to received result

57. Send a Image to user
Make sure it is text message not operation

58. Send a Image to user
Send image to who text to the bot

59. “Hello” message from Line
Bot
Hello

60. Send a “Hello” message when add bot as
friend
Determine the operation type

61. Send a “Hello” message when add bot as
friend
Get request from ID, this is only way for now

62. Example: PetNeedMe
https://github.com/kkdai/LineBotPetNeedMe

63. Build Facebook Bot

64. Step 1: Deploy to Heroku
Link : https://github.com/kkdai/FBBotTemplate

65. Remember this address

66. Step 2: Create Facebook
Page

67. Step 3: Create App for
Messenger
• Create new app
“Web App”
• Select new
product
“Messenger”

68. Step 4: Create App Token
• Select generate
token.
• Need a “Page”

69. Step 5: Paste token to
Heroku Variable

70. Step 6: Setup Page
Subscription for Messenger Bot
https://APP_ADDRESS.herokuapp.com/webhook
Token we just generate

71. Step 7: Select a Page for
your Webhooks

72. Step 8: Select a Page for
your Webhooks

73. Example: PetNeedMe

74. Build A Smart IM Bot

75. IM ?

76. IM Bot 10 years ago
“ ”
: https://briian.com/2536/msn-bot.html

77. IM Bot 10 years later
“Fugle ”

80. • Left Brain
• Logical
• Verbal
• Language

81. ?

82. ?
?

83. ?
?
?
?
?
?
?

84. ?
Intent: ??
Entity: ??

85. ?
Intent: Check Weather
Entity: ??

86. ?
Intent: Check Weather
Entity: Taipei

87. Use LUIS to build smart
Bot

88. Use LUIS to build smart
Bot

89. LUIS

90. Other Natural Language
Processing Tool

91. Future

92. Future :
Bot to Bot (No more API)

93. Future :
Customer Service Bot
http://www.mobile01.com/topicdetail.php?f=383&t=4078424

94. Future :
For Your Website and Business

95. Future :
For Your Website and Business

96. Future :
How About Build Right Brain?

97. We are Hiring..
1. NFV/SDN Expert
2. Data Engineer

98. http://weekly.codetengu.com/

99. Go
Call For Speaker