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

13.
Why Golang
• Make programming
fun again.

14.
gofmt / goimport

15.
Before we look code

16.
Before we look code (cont)

17.
After file save..

18.
Go Vet
Analysis on source code and reports
suspicious constructs.

19.
Go Lint
Coding style suggestions

20.
GoRoutine:
Multiple Thread in C

21.
GoRoutine:
Multiple Thread in Go

22.
GoRoutine and Channel:
Multiple Thread in Go

23.
GoRoutine and Channel:
Multiple Thread in Go

24.
GoRoutine and Channel:
Multiple Thread in Go

25.
https://talks.golang.org/2014/gocon-tokyo.slide

26.
Golang - HTTPS Server

27.
Golang - HTTPS Server
Supported
HTTP/2
After Go 1.6

28.
Golang - Built-In Test

29.
Golang - Built-In Benchmark Test

30.
GoMobile
Original Work Flow
Golang
Sample Console
Sometime Failed
Work
Failed on Some Model

31.
GoMobile
Using Golang in Mobile
Golang
GoMobile
Package
Golang
Sample Console

32.
Go Playground:
Write A snippet Go code online
https://play.golang.org/

33.
Go JSON Tutorial

34.
Go JSON Tutorial

35.
Go JSON Tutorial

36.
Golang IDE
(Integrated Development Environment)

37.
Golang IDE
(Integrated Development Environment)
VIM-GO

38.
Golang IDE
(Integrated Development Environment)
Visual Studio Code Go Extension

39.
Let’s build IM Bot.

40.
Wait!
What is IM Bot working
flow?

41.
IM Bot Working Flow:
HTTPS Webhook

42.
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)

43.
Introduce Heroku
(Platform As A Service)
Free-tier

44.
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

45.
IM Bot Working Flow
(update)
HTTPS Webhook

46.
Build IM Line Bot

47.
Step 1: Request Line Bot Trial Account
Apply Line Bot trial account here
(Only 1 per Line Account)

48.
Step 2: Deploy to Heroku by
one click
Link : https://github.com/kkdai/LineBotTemplate

49.
Step 2: Deploy to Heroku by
one click
Remember this address

50.
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

51.
Step 4. Get related Line Bot
info for Heroku App setting
• Need copy
following
variable:
• Channel ID
• Channel Secret
• MID
Need copy those three

52.
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.

53.
Send a Image to user
Parse bot request to received result

54.
Send a Image to user
Make sure it is text message not operation

55.
Send a Image to user
Send image to who text to the bot

56.
“Hello” message from Line
Bot
Hello

57.
Send a “Hello” message when add bot as
friend
Determine the operation type

58.
Send a “Hello” message when add bot as
friend
Get request from ID, this is only way for now

59.
Example: PetNeedMe
https://github.com/kkdai/LineBotPetNeedMe

60.
Build Facebook Bot

61.
Step 1: Deploy to Heroku
Link : https://github.com/kkdai/FBBotTemplate

62.
Remember this address

63.
Step 2: Create Facebook
Page

64.
Step 3: Create App for
Messenger
• Create new app
“Web App”
• Select new
product
“Messenger”

65.
Step 4: Create App Token
• Select generate
token.
• Need a “Page”

66.
Step 5: Paste token to
Heroku Variable

67.
Step 6: Setup Page
Subscription for Messenger Bot
https://APP_ADDRESS.herokuapp.com/webhook
Token we just generate

68.
Step 7: Select a Page for
your Webhooks

69.
Step 8: Select a Page for
your Webhooks

70.
Example: PetNeedMe

71.
Build A Smart IM Bot

72.
IM ?

73.
IM Bot 10 years ago
“ ”
: https://briian.com/2536/msn-bot.html

74.
IM Bot 10 years later
“Fugle ”

75.
• Left Brain
• Logical
• Verbal
• Language

76.
?

77.
?
?

78.
?
?
?
?
?
?
?

79.
?
Intent: ??
Entity: ??

80.
?
Intent: Check Weather
Entity: ??

81.
?
Intent: Check Weather
Entity: Taipei

82.
Use LUIS to build smart
Bot

83.
Use LUIS to build smart
Bot

84.
LUIS

85.
Other Natural Language
Processing Tool

86.
Future

87.
Future :
Bot to Bot (No more API)

88.
Future :
Customer Service Bot
http://www.mobile01.com/topicdetail.php?f=383&t=4078424

89.
Future :
For Your Website and Business

90.
Future :
For Your Website and Business

91.
Future :
How About Build Right Brain?

92.
We are Hiring..
1. NFV/SDN Expert
2. Data Engineer

93.
http://weekly.codetengu.com/

94.
Go
Call For Speaker