Orion Trading SDK

Attention! For the correct work of the SDK, you need to update the package to the latest version and follow updated instructions below.

Installation

npm install @orionprotocol/orion-trading-sdk

Methods with parameters per module

---

Module Chain

getWalletBalance(ticker)

Parameter	Type	Required	Description
ticker	string	no	empty ticker field return balance for all tokens

@return token balance on wallet (uint)

---

Module OrionAggregator

createOrder({...params})

Parameter	Type	Required	Description
fromCurrency	string	yes	token symbol
toCurrency	string	yes	token symbol
side	string	yes	'buy' or 'sell'
price	number	yes	any number
amount	number	yes	any number
priceDeviation	number	yes	it's percents, 0 < priceDeviation < 50
needWithdraw	boolean	no	false by default, feature in process
chainPrices	object	no

chainPrices is optional (use it if you already knew prices):

Parameter	Type	Required	Description
gasWei	string	yes	gas price in wei
baseAsset	string/number	yes	aka 'fromCurrency'
networkAsset	string/number	yes
feeAsset	string/number	yes

@return prepared and signed order

sendOrder(order, isCreateInternalOrder)

Parameter	Type	Required	Description
order	object	yes	Order object from createOrder()
isCreateInternalOrder	boolean	no	Execution only in the internal order book; false by default

@return orderId

cancelOrder(orderId)

Parameter	Type	Required	Description
orderId	string	yes

@return orderId of cancelled order

getOrderById(orderId, owner)

Parameter	Type	Required	Description
orderId	string	yes
owner	string	no	by default owner address is a current wallet address

@return order with requested id

getTradeHistory({...options})

Parameter	Type	Required	Description
baseAsset	string	no	token address
quoteAsset	string	no	token address
startTime	number	no
endTime	number	no
limit	number	no	default 1000

@return list of orders

Module Exchange

getContractBalance(ticker)

Parameter	Type	Required	Description
ticker	string	no	empty ticker field return balance for all tokens

@return token balance on smart contract (bignumber)

deposit(token, amount)

Parameter	Type	Required	Description
token	string	yes
amount	string	yes

@return transaction hash

withdraw(token, amount)

Parameter	Type	Required	Description
token	string	yes
amount	string	yes

@return transaction hash

---

Module WS

priceFeedAll()

• no params

@return subscriber for all tickers price feed

priceFeedTicker(ticker)

Parameter	Type	Required	Description
ticker	string	yes

@return subscriber for specific ticker price feed

orderBooks(pair)

Parameter	Type	Required	Description
pair	string	yes

@return subscriber for orderbooks

---

How to use

Important note! you should always wrap your async functions in a try-catch block, so you could handle errors in a right way.

try {
   // place here your async functions
   /* Example
       const chain = new Chain(privateKey, networkParams)
       await chain.init() // get blockchain info
    */

} catch(error) {
   // handle errors
}

First step: Create base Chain instance

import { Chain, Constants } from '@orionprotocol/orion-trading-sdk'

// Set params for Chain constructor

const privateKey = 'your_private_key'

// in Constants.NETWORK you should choose mode (MAIN | TEST) and then chain (BSC | ETH)
const networkParams = Constants.NETWORK.TEST.BSC

// By default networkParams is NETWORK.TEST.BSC

try {
    const chain = new Chain(privateKey, networkParams)

    await chain.init() // get blockchain info
} catch (error) {
    // handle error
}

In examples below we hide try-catch blocks, because they are wrappers. But you should always use them.

Now you ready to go.

Examples

(previous steps are required)

Get wallet balance:

const walletBalance = await chain.getWalletBalance('ORN') // by ticker

const walletBalanceSummary = await chain.getWalletBalance() // summary

/*
    Example:
    { ORN: '13890000000000' } // uint
*/

For further operations, network tokens are required to pay for transactions, as well as tokens for deposit / withdrawal / exchange.

Deposit token:

import { Exchange } from '@orionprotocol/orion-trading-sdk'

const exchange = new Exchange(chain)

const deposit = await exchange.deposit('ORN', '10')
// Should return transaction object

Get smart contract balance:

const contractBalance = await exchange.getContractBalance('ORN') // by ticker

const contractBalanceSummary = await exchange.getContractBalance() // summary

/*
    Example:
     {
        ORN: {
          total: [BigNumber],
          locked: [BigNumber],
          available: [BigNumber]
        }
      }
*/

Withdraw token:

const withdraw = await exchange.withdraw('ORN', '10')
// Should return transaction object

Work with OrionAggregator:

Creating, sending, canceling orders and getting info

import { OrionAggregator } from '@orionprotocol/orion-trading-sdk'

orionAggregator = new OrionAggregator(chain)

// There is no need to call deprecated method orionAggregator.init() now,
// module is ready to use. But this method is left for backward compatibility.

Create, sign and send order to OrionAggregator:

// create order
const order = {
    fromCurrency: 'ORN',
    toCurrency: 'DAI',
    feeCurrency: 'ORN', // available fee tokens you can find in chain.tokensFee
    side: 'sell',   // 'buy' or 'sell'
    price: 12,
    amount: 10,
    priceDeviation: 1,   // it's percents: 0 < priceDeviation < 50
    // 'chainPrices' is optional, use it when prices are already known
    // to increase request speed
    chainPrices: {
        networkAsset: 57,  // // 'networkAsset' price against ORN
        baseAsset: 1,    // 'fromCurrency' price against ORN
        feeAsset: 1,    // 'feeCurrency' price against ORN
        gasWei: '10000000000'
    }
}

// create and sign order
const signedOrder = await orionAggregator.createOrder(order)

// send order
const sentOrderResponse = await orionAggregator.sendOrder(signedOrder)
// Should return order id if successful

Cancel order:

const orderCancelation = await orionAggregator.cancelOrder(sentOrderResponse.orderId)
// Should return order id if cancelation is successful

Get orders history/status:

// getTradeHistory returns list of orders
const history = await orionAggregator.getTradeHistory()

// getOrderById returns order object
const order = await orionAggregator.getOrderById(sentOrderResponse.orderId)
// const status = order.status

Websockets

Create WS instance:

import { WS, Constants } from '@orionprotocol/orion-trading-sdk'

// Create ws instance

// in Constants.ORION_WS you should choose mode (MAIN | TEST) and then chain (BSC | ETH)
const wsUrl = Constants.ORION_WS.TEST.BSC

// wsUrl by default is ORION_WS.TEST.BSC
const ws = new WS(wsUrl)

// There is no need to call deprecated method ws.init() now,
// module is ready to use. But this method is left for backward compatibility.

To subscribe to the price feed:

// Subscribe for all tickers
const subscriberForAll = ws.priceFeedAll()

// Subscribe for specified ticker
const subscriberForTicker = ws.priceFeedTicker('ORN-USDT')

subscriberForAll.on('message', (message) => {
    // do something with message data
});

subscriberForTicker.on('message', (message) => {
    // do something with message data
});

// Unsubscribe
subscriberForAll.close()
subscriberForTicker.close()

To subscribe to the orderbooks:

// Subscribe for orderbooks
const subscriberForOrderbooks = ws.orderBooks('ORN-USDT')

subscriberForOrderbooks.on('message', (message) => {
    // do something with message data
});

// Unsubscribe
subscriberForOrderbooks.close()

Testing

To run the tests, follow these steps. You must have at least node v10 installed.

Clone repository

git clone https://github.com/orionprotocol/trading-sdk

Move into the trading-sdk working directory

cd trading-sdk/

Install dependencies

npm install

Run tests

npm run test

You should see output with all test passed

Resources

• Changelog