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SteemJS Tools - Witness Price Feed in NodeJS by drakos

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witness-category · @drakos · (edited)
$391.07
SteemJS Tools - Witness Price Feed in NodeJS
<center>https://steemitimages.com/DQmcNnyf5aJTjvYLNvWw7Wa87cd8REGMdYRqE1gPKNSaNmL/robot-148989_640-steem-241x400.png</center>

For a long time I've been using the legendary Steemfeed-JS by @someguy123. However, it uses the outdated https://github.com/svk31/steemjs-lib which is buggy and causes script crashes every once in a while. Also, Steemfeed-JS is only working for Bittrex prices now that Poloniex has been utterly unreliable with its disabled STEEM/SBD wallet therefore having much lower traded volumes with a different (lower) price than the rest of the exchanges.

There are other price feed scripts out there, but I decided to write my own for several reasons.
- Programming is fun.
- Learn something new.
- Customize the tool to my liking.
- Address and fix the problems in Steemfeed-JS.
- Average the price from the major exchanges: Binance, Bittrex, Huobi and UpBit.

# STEEM Price Feed
A price feed application written in NodeJS for witnesses on the Steem network.

## Features
- Application resilience with NodeJS restart on crash/exit.
- Automatic RPC switching.
- Averaged price from up to 5 major cryptocurrency exchanges.

# Pre-install (e.g. Ubuntu 16.04)
Requires NodeJS >7.6 (for the async functions).
```
sudo apt update
sudo apt install -y curl software-properties-common gnupg build-essential libssl-dev
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt install -y nodejs
sudo npm i npm@latest -g
```

# Install
```
git clone https://github.com/Jolly-Pirate/pricefeed.git
cd pricefeed
cp app/config.json.example app/config.json
chmod 600 app/config.json
```

Edit the app/config.json then install and start the app
```
npm install
npm start
```

### Screen session example
Start and enter a screen session: `screen -S pricefeed`

Start the script: `npm start`

Detach from the screen session with `CTRL-a-d`. This will leave it running in the background.

Reattach to the session with `screen -x pricefeed` to monitor its status. 

If you want to terminate the script press `CTRL-c`, then type `exit` to close the session.

---

<center>https://upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Docker_%28container_engine%29_logo.svg/320px-Docker_%28container_engine%29_logo.svg.png</center>

# Docker install (recommended)
```
git clone https://github.com/Jolly-Pirate/pricefeed.git
cd pricefeed
chmod +x run.sh
./run.sh install_docker
./run.sh build
```
Edit the file `app/config.json` accordingly (see the section below), then start the container with
```
./run.sh start
```

Check that it's running fine with `./runs.sh logs`

Type `./run.sh` without arguments for a list of options.

---

# Configuration
The configuration is located in the file `app/config.json`.

- witness: witness account
- privateActiveKey : private active key of the witness account
- interval : delay between each feed publishing.
- peg : set to true only if you want to adjust your price feed bias.
- peg_multi : if the peg is enabled, then this will change the "quote" to `1 / peg_multi`, e.g. a peg_multi of 2 it will show a 100% bias on the feed.
- rpc: Steem RPC nodes

The different exchanges can be set to `true` or `false`. Poloniex is set to false by default because of their constant wallet problems.

The script is set to publish the price feed every 6 hours by default which is very acceptable. I included a docker setup for easy deployment.

<center>![example.png](https://steemitimages.com/DQmUyNrrewzEiQPTMx547NeDNgUP6oCXrjgWHhegoyXPdSD/example.png)</center>

Source code at https://github.com/Jolly-Pirate/pricefeed

I hope you like it. Please report any bugs or if you have any improvement suggestions.

***
<center>
#### Available & Reliable. I am your Witness. I want to represent You.
##### &#x1F5F3; If you like what I do, consider voting for me &#x1F5F3;
[![Vote](https://steemitimages.com/DQmfRx7jNSrFAnRZPrKRHLDxR22gRFYTBnKr2uLNdVty3MG/drakos-witness-thanks.gif)](https://steemit.com/~witnesses)
###### If you never voted before, I wrote a detailed guide about [Voting for Witnesses](https://steemit.com/witness-category/@drakos/tips-and-guidelines-voting-for-witnesses).
<sub>Go to https://steemit.com/~witnesses. My name is listed in the Top 50. Click https://steemitimages.com/DQmYq3yGqzvbK4JQFudeXoDp6PEtdny8vSvX5swqW5sA2fE/chevron-up.png once.</sub>
###### Alternatively you can vote via SteemConnect
<sub>https://v2.steemconnect.com/sign/account-witness-vote?witness=drakos&approve=1</sub>
</center>
πŸ‘  , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and 353 others
properties (23)
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vote details (417)
@angellija · 
Hi i am lija so sad but i am steemit account not a upvote please help me friend please only give me upvote me
πŸ‘  , ,
properties (23)
authorangellija
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180523t192800546z
categorywitness-category
json_metadata{"tags":["witness-category"],"community":"busy","app":"busy/2.4.0"}
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root_title"SteemJS Tools - Witness Price Feed in NodeJS"
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post_id57,321,659
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vote details (3)
@celsius100 · 
Hi.  Was going through my witness list, which was long overdue.  I saw your name and somehow I could not recall you being on the witness list.  I saw that you were close to the top 20, so I checked out your witness post (through Steemian.info, btw).  Very impressive.  So I checked out a few posts and saw the one about the spaghetti western comedy.  Nice.  So I went to your most recent post and gave you an upvote and voted for you as witness.  Since they were playing cards, I also thought you might be a poker player.  If you are a poker fan,  stop by at https://discord.gg/tYSFja.  We play poker at lucksacks.com with SBD as the unit of exchange.  Love to have you stop by if you have time.  Thanks for all you do for the Steem world.
properties (22)
authorcelsius100
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180523t021105015z
categorywitness-category
json_metadata{"tags":["witness-category"],"links":["https://discord.gg/tYSFja"],"app":"steemit/0.1"}
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@drakos · 
Indeed I'm a poker fan, in fact I used to play at Lucksacks. Maybe I'll pop in again.
properties (22)
authordrakos
permlinkre-celsius100-re-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180523t030226945z
categorywitness-category
json_metadata{"tags":["witness-category"],"app":"steemit/0.1"}
created2018-05-23 03:02:27
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@celsius100 · (edited)
That would be great.  I will tell @tuck-fheman to get you approved as soon as possible.  When you pop in there, let me know and I will set that up for you.
properties (22)
authorcelsius100
permlinkre-drakos-re-celsius100-re-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180523t030545827z
categorywitness-category
json_metadata{"tags":["witness-category"],"users":["tuck-fheman"],"app":"steemit/0.1"}
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@criptokingko · 
Master frankly your have match on steemit, i adorn your precious blog.
My regards to you boss.
properties (22)
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permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180525t011731320z
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@cryptopie · 
## Keep up the great work there @drakos I have toted for you too.
properties (22)
authorcryptopie
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@emmywell · 
That's a good one
πŸ‘  
properties (23)
authoremmywell
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180524t101025258z
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vote details (1)
@emrebeyler · 
Thanks for sharing the price feed script. [pm2](http://pm2.keymetrics.io/) may be a better solution to keep the price feed process up instead of tmux, screen, etc.
πŸ‘  ,
πŸ‘Ž  , , , , , , , , , , ,
properties (23)
authoremrebeyler
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vote details (14)
@drakos ·
$0.03
I'm actually using [forever](https://www.npmjs.com/package/forever) with the script. It has the option to start a process as a service like pm2 does. Nevertheless, if you use the dockerized installation you don't need to worry about screen or tmux, it's all taken care of :)
πŸ‘  
properties (23)
authordrakos
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vote details (1)
@eurogee · 
Being independent is good. That's a nice effort. Thanks for the innovative post.
properties (22)
authoreurogee
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180523t035456748z
categorywitness-category
json_metadata{"tags":["witness-category"],"app":"steemit/0.1"}
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@geovanny1000 · 
Muy Creativo. seguire tus publicaciones...
properties (22)
authorgeovanny1000
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180525t162239103z
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@gvand · 
I do not get along with the programming, but I see that you do! Excellent work
properties (22)
authorgvand
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180523t043354047z
categorywitness-category
json_metadata{"tags":["witness-category"],"app":"steemit/0.1"}
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@indigoocean · 
It’s fun seeing you play with your code for all our benefit :) You’re one of my favorite witnesses.
properties (22)
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@ismailadeel · 
Congracts for new post keep up the good work with steemit a resteem from my side best of luck Advance. Cheers...... @drakos
πŸ‘  
properties (23)
authorismailadeel
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vote details (1)
@matife · 
Great post
Amazing lessons
Thanks @drakos
For communicating this.
properties (22)
authormatife
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180522t232510900z
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@melissakellie · 
Great post @drakos i don't know if you remember but you were the one who helped me get started on steemit and told me how i can buy my account as i was getting impatient from waiting hehe I just voted for you as a witness :) and as i grow even more here on this platform i will remember how lovely and helpful you were :) I hope you have an awesome day :D
properties (22)
authormelissakellie
permlinkre-drakos-steemjs-tools-witness-price-feed-in-nodejs-20180527t071022916z
categorywitness-category
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@mumin007 ·
$0.08
I really appreciate your work ![IMG_20180523_045454.jpg](https://ipfs.busy.org/ipfs/QmZ7svKRYcBwouwMPdwh7nzo7TegDCJaHVHPAZ1tBAwuoK)
πŸ‘  , ,
properties (23)
authormumin007
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categorywitness-category
json_metadata{"tags":["witness-category"],"community":"busy","app":"busy/2.4.0"}
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vote details (3)
@nurhayati · 
@drakos, I don't understand the programming language, but I support you master. :)
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@quochuy · 
Ah finally! I was going to start my own but now that you did it I’m got be lazy 😜

Thanks for sharing
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@roselover · 
I voted for you as a witness
Because you are a very successful and wonderful person
And help everyone dear
Thank you for the wonderful effort
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@samiurrehman10 · 
Great work on nodejs @drakos
properties (22)
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@shibleehossain · 
vote for vote
properties (22)
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@silentscreamer · (edited)
Dammit. If i ever decide to run for witness in 25 years, seems id need to buy a programmer. Keep him/her locked away hammering at those blocks. haha.. 
Hmmm. @jesta seems capable... _leaves to buy a net and some cake for bait._

One more thing. Im trying to help out OpenMic this week. Im donating all my SBD from a post i wrote on "Enlightened self interest".. (its a bit of a long read). I pinged you but you might have missed it. 
OpenMic is running at a loss for weeks now since Pfunk dropped from Top 20, so im trying to help fill up their reward pool. The post is already at 74$ so theres the bonus of some delegation for you and you will be doing a good deed. :D
properties (22)
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@sweettais · 
thanks for the informative post
(Would be great if you could support my latest post;)
properties (22)
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@transparencybot · (edited)
<h3>This post has received votes totaling more than $50.00 from the following pay for vote services:</h3>

upme upvote in the amount of $94.51 STU, $129.34 USD.
rocky1 upvote in the amount of $81.77 STU, $111.91 USD.
appreciator upvote in the amount of $82.07 STU, $112.31 USD.
jerrybanfield upvote in the amount of $45.65 STU, $62.48 USD.

**For a total calculated value of $304 [STU,](http://steem.supply/rewards) $416 USD before curation, with a calculated curation of $76 USD.**

This information is being presented in the interest of transparency on our platform **and is by no means a judgement as to the quality of this post.**
properties (22)
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json_metadata{"tags":["bidbot","transparencybot"],"links":["http://steem.supply/rewards"],"app":"null/null","format":"markdown"}
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@utopian-io · 
#### Hi @drakos! 

Your post was just upvoted by @utopian-io. We invite you to join our developer community on the Steem blockchain to crowdsource your project development and promotion with Utopian.

#### Contributing on Utopian
Learn how to contribute on <a href="https://join.utopian.io">our website</a>.

**Want to chat? Join us on Discord https://discord.gg/h52nFrV**
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@veta-less · (edited)
Thank you for your work @drakos . You are my favorite Witness, because you support art &#10084;  But for the first time I hear that programming is fun. My husband is a programmer, and I often see the screen of his computer. In my opinion, this is too difficult &#128522;  
I'll show my husband your post. Perhaps your advice will be useful to him.
properties (22)
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@wandoc · 
good wishes of friends, upvote and resteem.
properties (22)
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@xandros · 
Awesome! I'll try your tool because I'm tired of mistakes like "SteemApi error:get_required_signatures"
![steemfeed js error](https://cdn.steemitimages.com/DQmNSEN9pfDJSpU4pvZP2K3J26eT7tgfTLyEDyjiWShQhm8/%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA%20%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0%20%D0%BE%D1%82%202018-05-26%2002-37-57.png)
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@drakos ·
$0.76
Precisely.
https://github.com/svk31/steemjs-lib/issues/8#issuecomment-388535559
πŸ‘  
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vote details (1)
@yanabrui · 
Hello!
Good post!
properties (22)
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@yanes94 · 
Wow what a great job, programmers should consider themselves an artist, for my programming it is a work of art.

Feel relieved that you do not know me in person because if I do not spend the whole day asking you to teach me how to program hehehe 😍
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Help/Feedback