Steem Feed JS

This is a STEEM Price Feed for witnesses on the STEEM Network. It's written in Node.JS and uses Steemit's Steem-JS.

Recommended NodeJS version: v8.11.4

Installation

First, download the git repository, then edit config.json as needed. The interval is in minutes.

git clone https://github.com/ayogom/steemfeed-js.git
cd steemfeed-js
cp config.example.json config.json
nano config.json

I recommend using Docker, however you can also use a locally installed copy of Node v8.11.4.

Starting Via Docker

# If you don't have docker installed yet, you can easily install it using run.sh
./run.sh install_docker

# (Optional) To save a little time, you can use my binary docker image, instead of having
# to build the container - which takes a few minutes (vs. a few seconds via binary install)
./run.sh install

# Now just start your feed :)
./run.sh start

# Check the logs / status to make sure it's working properly
./run.sh logs       # Check the status with docker logs
./run.sh status     # This will also help you check if it's running or not.

# If you need to force update your feed at any point
./run.sh publish

# Other useful commands:
./run.sh stop       # To stop the steemfeed-js container
./run.sh restart    # To restart the steemfeed-js container (e.g. after config changes)
./run.sh build      # If you don't want to / can't use my binary image, this will force build a new image locally.

Starting Via NodeJS (assuming you have the correct version installed)

npm install
npm start

Easy update with Docker

To update the dockerised version simply do the following:

git pull
./run.sh install
./run.sh restart

Crontab

As NodeJS is somewhat unreliable, it's recommended to use a cron to restart it every 3 to 4 hrs.

crontab -e

For docker you can use the following (restarts every 4 hrs)

0 */4   *  *    *    docker restart steemfeed

Configuration

{
    "name": "your steem/hive name",
    "wif": "your active private key",
    "network": "steem",
    "interval": 60,
    "peg": false,
    "peg_multi": 1
}

name (REQUIRED) - The name of the steem account that will publish the feed
wif (REQUIRED) - The active private key for the steem account
node (default: https://api.steemit.com) - The HTTP(S) URL of the steem node to use, e.g. https://steemd.privex.io
interval (default: 60) - The number of minutes between publishing the feed
network (default: steem) - The network (chain) you're using this for. Options are: steem and hive
peg (default: false) - Set to true only if you want to adjust your price feed bias
peg_multi (default: 1) - If "peg" is set to true, then this will change the "quote" to 1 / peg_multi. If you set "peg_multi" to 2 it will show a 100% bias on your feed.

Advanced Configuration Options

NOTE: The settings ex_symbol, ex_compare, base_symbol and quote_symbol normally do not need to be adjusted.

Just set the correct network, and those settings will be automatically updated to the correct values.

ex_symbol - The symbol we're obtaining the price of. Default: steem

ex_compare - The symbol we're pricing ex_symbol with (i.e. the other half of the exchange pair). Default: usd

base_symbol - The symbol used for the "base": "0.512 SBD" part of the feed. Default: SBD

quote_symbol - The symbol used for the "quote": "1.000 STEEM" part of the feed. Default: STEEM

disable_exchanges - A list of exchange code 's to disable. Exchanges listed here will not be used directly (i.e. get price for A/B), nor indirectly (i.e. get price for A/D by converting A/C then C/D).

Example (disable all exchanges...):

{
    "disable_exchanges": ["bittrex", "poloniex", "kraken", "ionomy", "binance"]
}

exchanges_no_provide - Disable use of specific coin pairs per exchange, for example, you might want to temporarily ban the usage of STEEM/BTC from Poloniex.

Example (block STEEM/BTC from poloniex, block BTC/USDT on Kraken):

{
    "exchanges_no_provide": {
        "poloniex": [
            ["steem", "btc"]
        ],
        "kraken": [
            ["btc", "usdt"]
        ]
    },
}

exchanges_provide - Add new coin pairs to exchanges, allowing the user to inform steemfeed-js of new pairs supported by a given exchange.

By default, most exchange adapters have the following pairs enabled (if the exchange supports them):

- BTC/USD
- BTC/USDT
- USDT/USD
- STEEM/BTC
- HIVE/BTC
- STEEM/USD (preferred over STEEM/BTC)
- HIVE/USD (preferred over HIVE/BTC)

Example (add BTC/DASH, EOS/USD, EOS/BTC to bittrex - add EOS/BTC to kraken):

{
    "exchanges_provide": {
        "bittrex": [
            ["btc","dash"],
            ["eos","usd"],
            ["eos","btc"]
        ],
        "kraken": [
            ["eos", "btc"]
        ]
    }
}