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@ostdotcom/ost-price-oracle

1.0.3 • Public • Published

Price Oracle - Price Oracle on top of the OpenST network

Latest version Travis Downloads per month

We caution that this is early stage software and under heavy ongoing development and improvement. Please report bugs and suggested improvements.

Install OST Price Oracle

npm install @ostdotcom/ost-price-oracle --save

Set EVN Variables

Set Initial Setup Variables:

export OST_UTILITY_GETH_RPC_PROVIDER='http://127.0.0.1:8545'
export OST_UTILITY_GETH_WS_PROVIDER='ws://127.0.0.1:18545'
export OST_UTILITY_DEPLOYER_ADDR='0xa4ff1bb9d240921e2c4ebf2ec7e62d90714ec2d1' # An Address having balance 
export OST_UTILITY_DEPLOYER_PASSPHRASE='testtest' # deployer passphrase 
export OST_UTILITY_OPS_ADDR='0xbd0a2ae58648a2c39238ea4da56954502398b1cb' # An Address having balance 
export OST_UTILITY_OPS_PASSPHRASE='testtest' # deployer passphrase 
export OST_UTILITY_PRICE_ORACLES='{}' # set blank object so that JSON.parse doesn't break 

Run Deployment Script:

node tools/deploy/price_oracle.js OST USD 0x12A05F200
OST is baseCurrency
USD is quoteCurrency

export price oracles:

export OST_UTILITY_PRICE_ORACLES='{"OST":{"USD":"0x2f00d4220d4B119e7f477C178bEd5932492eE3dF"}}'

Set Caching Engine:

export OST_CACHING_ENGINE='none'
For details refer - [OpenSTFoundation/ost-price-oracle](https://github.com/OpenSTFoundation/ost-price-oracle)

Example:

const OSTPriceOracle = require('@ostdotcom/ost-price-oracle')
  , priceOracle = OSTPriceOracle.priceOracle;
priceOracle.fixedPointIntegerPrice(0.5); // Returns Fixed Point Integer
priceOracle.setPrice(2000, 'OST','USD', 5000000000000000000, '0x12A05F200'); // Set Fixed point integer in Wei unit for a chain ID
priceOracle.getPrice(2000, 'OST', 'USD'); // Returns Fixed Point Integer Value for a chain ID
priceOracle.decimalPrice(2000, 'OST', 'USD'); // Returns Decimal Price for a chain ID

install

npm i @ostdotcom/ost-price-oracle

Downloadsweekly downloads

52

version

1.0.3

license

LGPL-3.0

homepage

ost.com

repository

Gitgithub

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