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Social IRCbots in the cloud

with Node.js and MongoDB

Marek JelenPaaS Evangelist, Red HatMongoLondon, 2013

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i. basic understanding what cloud is and what it is not

ii. you are a developer and you know what Node.js

iii. basic knowledge of MongoDB

iv. questions are good!

v. questions are awesome!

vi. discussion is preferred to my monologue

My expectations

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What is IRC?• Communication protocol• Open (RFC1459) & Simple• Text based

• Realtime-communication• Group chat & One-to-One chat• Users => #channels <= Bots• Clients, Bouncers, Bots

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Basic IRC commands• /join #openshif• /msg mjelen This is awesome• /me is presenting in London• /topic Don't be afraid to ask questions.

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Is it any good?• Basic communication channel of tech companies• Community building environment• Support channel for users• etc. etc. etc.

• OpenSource servers & clients (standalone, web)

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What is OpenShift?

Red Hat's free, auto-scaling Platform as a Service (PaaS) for applications in the cloud.

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Looks great, but what’s the catch?

• OpenShif is free-as-in-beer & free-as-in-freedom • Three times 0.5GB RAM/1GB storage • Need more resources, just ask!• We are in Developer Preview• Sign up at openshift.com• Promo code: MongoDBLondon

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Three flavours

• OpenSource project => OpenShif Origin

• Enterprise ready product => OpenShif Enterprise

• Service by Red Hat => OpenShif Online

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And now, let's buildAnd now, let's build

some botssome bots

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My bots on OpenShift (1)• Create new deployment environment• rhc app create ircbot nodejs• clones a git repository locally• setups node.js environment• allows you ssh access• provides logs tailing• sets public DNS records

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My bots on OpenShift (2)• Enter the directory• cd ircbot

• Install dependencies• npm install irc -s

• Write the code

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My bots on OpenShift (3)• Record changes (when needed)• git add package.json server.js

• Commit the changes• git commit -m “My first commit”

• And deploy• git push [origin [master]]

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My bots on OpenShift (4)• Add MongoDB to the mix• rhc cartridge add mongodb-2.2 -a ircbot

• Add RockMongo to inspect MongoDB• rhc cartridge add rockmongo-1.1 -a ircbot

• Install dependencies• npm install -S mongojs

• Write the code• Connect to MongoDB from application

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My bots on OpenShift (5)• Record changes (when needed)• git add package.json server.js

• Commit the changes• git commit -m “My first commit”

• And deploy• git push (origin (master))

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Conclusion• Three flavors of OpenShif • Origin, Enterprise, Online

• Sign up for Online for free• Promo code: MongoLondon

• IRC is fun• Open, Simple, Feature-full

• Node.js makes it simple to write apps• MongoDB helps with data persistence

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Thanksmjelen@redhat.com@marek_jelen

http://openshift.redhat.com