Post on 21-Apr-2017
Modern Web 2016
Using Golang to build smart IM Bot
Evan Lin @LinkerNetworkshttp://goo.gl/IYv1BU
About Me• Cloud Architect @ Linker
Networks • Top 10 Taiwan Golang open
source contributor (github award)
• Developer, Curator, Blogger
Agenda• What is IM Bot • Introduce Golang
• Build Line Bot
• Build FB Bot
• Build a smart IM Bot • Future
• Q&A
Instant Message Bot
What is IM? (Instant Messenger)
What is IM Bot?
How to choose programming language
• Easy to Write • Fast in Run and
Compile • Powerful Concurrency • Powerful Built-in
Toolchain
Pokemon GO
Programming GO
What is Go(lang)• Create by Google • Design by
• Ken Thompson • Rob Pike • Robert Griesemer,
• Feature:
• Compiled • Statically Typed • Garbage Collection
Why Golang
• GO Fast! • Compile Fast! • Run Fast!
Go is Fast
Why Golang
• Make programming fun again.
gofmt / goimport
Before we look code
Before we look code (cont)
After file save..
Go Vet Analysis on source code and reports
suspicious constructs.
Go Lint Coding style suggestions
GoRoutine: Multiple Thread in C
GoRoutine: Multiple Thread in Go
GoRoutine and Channel: Multiple Thread in Go
GoRoutine and Channel: Multiple Thread in Go
GoRoutine and Channel: Multiple Thread in Go
Golang - HTTPS Server
Golang - HTTPS Server
Supported HTTP/2
After Go 1.6
Golang - Built-In Test
Golang - Built-In Benchmark Test
GoMobileOriginal Work Flow
Golang Sample Console
Sometime Failed
Work
Failed on Some Model
GoMobileUsing Golang in Mobile
GolangGoMobilePackage
Golang Sample Console
Go JSON Tutorial
Go JSON Tutorial
Go JSON Tutorial
Golang IDE (Integrated Development Environment)
Golang IDE (Integrated Development Environment)
VIM-GO
Golang IDE (Integrated Development Environment)
Visual Studio Code Go Extension
Let’s build IM Bot.
Wait! What is IM Bot working
flow?
IM Bot Working Flow:
HTTPS Webhook
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)
Introduce Heroku (Platform As A Service)
Free-tier
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
IM Bot Working Flow (update)
HTTPS Webhook
Build IM Line Bot
Step 1: Request Line Bot Trial AccountApply Line Bot trial account here
(Only 1 per Line Account)
Step 2: Deploy to Heroku by one click
Link : https://github.com/kkdai/LineBotTemplate
Step 2: Deploy to Heroku by one click
Remember this address
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
Step 4. Get related Line Bot info for Heroku App setting
• Need copy following variable:
• Channel ID • Channel Secret • MID
Need copy those three
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.
Send a Image to user
Parse bot request to received result
Send a Image to user
Make sure it is text message not operation
Send a Image to user
Send image to who text to the bot
“Hello” message from Line Bot
Hello
Send a “Hello” message when add bot as friend
Determine the operation type
Send a “Hello” message when add bot as friend
Get request from ID, this is only way for now
Example: PetNeedMehttps://github.com/kkdai/LineBotPetNeedMe
Build Facebook Bot
Step 1: Deploy to Heroku
Link : https://github.com/kkdai/FBBotTemplate
Remember this address
Step 2: Create Facebook Page
Step 3: Create App for Messenger
• Create new app “Web App”
• Select new product “Messenger”
Step 4: Create App Token
• Select generate token.
• Need a “Page”
Step 5: Paste token to Heroku Variable
Step 6: Setup Page Subscription for Messenger Bot
https://APP_ADDRESS.herokuapp.com/webhook
Token we just generate
Step 7: Select a Page for your Webhooks
Step 8: Select a Page for your Webhooks
Example: PetNeedMe
Build A Smart IM Bot
IM ?
IM Bot 10 years later “Fugle ”
• Left Brain • Logical • Verbal • Language
?
?
?
?
?
??
??
?
?Intent: ??
Entity: ??
?Intent: Check Weather
Entity: ??
?Intent: Check Weather
Entity: Taipei
Use LUIS to build smart Bot
Use LUIS to build smart Bot
LUIS
Other Natural Language Processing Tool
Future
Future : Bot to Bot (No more API)
\
Future : Customer Service Bot
http://www.mobile01.com/topicdetail.php?f=383&t=4078424
Future : For Your Website and Business
Future : For Your Website and Business
Future : How About Build Right Brain?
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We are Hiring..
1. NFV/SDN Expert2. Data Engineer
Go Call For Speaker