🤘 BlockSnobbery: One blocklistener for 10000 STEEM bots based on Redis PUB/SUB and set_block_applied_callback steem api

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• One blocklistener app for 10000 bots! Connect to the blockstreamer with any number of scripts without creating undesirable load. Use the power and bandwidth of a redis pub/sub
• No block will be missed Checkpoint in case of a pause
• No intervals hell there are no intervals such as silly 3000ms
• Clean & Native Websockets No libraries required such as golos-js || steemjs
• Redis cache for fast synchronization

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💾 Install

You should already have installed nodejs.org & redis.io

• git clone https://github.com/vikxx/BlockSnobbery
• cd BlockSnobbery
• npm install ws
• npm install redis
• node snob.js now

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⚙️ Configure

Edit variables if required in snob.js

const WS = 'ws://localhost:9090'
const CHANNEL = "blockschannel"
const redKey = "lastblocknumber"

WS
If you have a steem node installed, use address ws://localhost:9090

You can also use public nodes: wss://steemd.steemit.com for STEEM

or wss://ws.golos.io for GOLOS

CHANNEL - custom name of a redis channel

redKey - custom redis key for a checkpoint block

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🚀 Run

Start from the specified block:
node snob.js 1234565

Start with the newest block:
node snob.js now

Start with the Last remembered block:
node snob.js

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Realtime block listener: node snob.js now

Processed block num	Age last ops	Current on Steem	State	Ops count	Ops lenght

Processing Block History after pause: node snob.js

Processed block	Age block	Current on Steem	State	Remain	Ops count	Ops lenght

Processing more than 1000 missed blocks less than a second

Quick return to real time and synchronization after the downtime of your applications

Connecting to a channel with operations

Use a redis SUB to get the blocks operations https://redis.io/topics/pubsub

For example:

const FilterOps = (op) => {
const [type, o] = op

if(type === "limit_order_create") // Do some func with: Order on market
 if(type === "comment"&&!o.parent_author)// Do some func with: post    
 if(type === "comment"&&o.parent_author)// Do some func with: comment   
 if(type === "vote" && o.weight > 0) // Do some func with: vote  
 if(type === "vote" && o.weight < 0) // Do some func with:  flag 
 if(type === "vote" && o.weight === 0) // Do some func with: downvote
 if(type === "custom_json") // Do some func with: follow, reblog etc. 
 if(type === "transfer") // Do some func with: transfer funds  
 if(type === "account_create")  // Do some func with:  account create 
 if(type === "account_update")  // Do some func with: profile update
 if(type === "account_witness_vote") // Do some func with: witness voting
 if(type === "feed_publish")  // Do some func with:  price feed
 if(type === "curation_reward")  // Do some func with:   curation reward
 if(type === "author_reward")   // Do some func with:  author reward
 //... etc


}


sub.on("message", (channel, message) => {
let ops = JSON.parse(message)
return ops.forEach(FilterOps)

})

sub.subscribe(SubRedisChannelName);