8. Withdraw DAI from Private Pool

Description

Withdraw DAI from private liquidity pool.

TBD: Narratives & Rules of withdrawal

User Interface

Function Description

Item	Description
Contract Address	Private pool contract (referenced by Smart Contract Overview section)
Contract Name	SLDDAIPools2.sol
Function	function withdraw(uint256 amount)
Function Selector	0x2e1a7d4d
Invocation Type	Ethereum Transaction
Passing Parameters	Amount of DAIs to withdraw; actual number multiplied by 1E18
Return Value	None
Event Emitted	event Withdraw(address indexed account, uint256 amount);
Event Signature	0x884edad9ce6fa2440d8a54cc123490eb96d2768479d49ff9c7366125a9424364
Transaction Sample(BSC testnet)	https://testnet.bscscan.com/tx/0xae1851d19feadb5d8f4ac8dfc24f746c1d851e06bb2a80c23685162b2784a39b

ABI Description

{
	"inputs": [{
		"internalType": "uint256",
		"name": "mintAmount",
		"type": "uint256"
	}],
	"name": "provide",
	"outputs": [],
	"stateMutability": "nonpayable",
	"type": "function"
}

Examples

Calling Examples

JavaScript

var Web3 = require('web3');
const BigNumber = require('bignumber.js');

// BSC Mainnet: https://bsc-dataseed.binance.org
// BSC Testnet: https://data-seed-prebsc-1-s1.binance.org:8545
const  web3 = new Web3("https://data-seed-prebsc-1-s1.binance.org:8545");

const CONTRACT_ADDRESS = "Replace with Private Pool Contract Address";
const ABI = [{
	"inputs": [{
		"internalType": "uint256",
		"name": "amount",
		"type": "uint256"
	}],
	"name": "deposit",
	"outputs": [],
	"stateMutability": "nonpayable",
	"type": "function"
}];

// Deposit 10 DAI to private pool.
const DEPOSIT_AMOUNT = 10e18;

var contract = new web3.eth.Contract(ABI, CONTRACT_ADDRESS);

contract.methods.provide(new BigNumber(DEPOSIT_AMOUNT).toString()).send({
    from: "CALLER_ADDRESS",
}, function(error, result){
    if(!error) {
      console.log('Response:', result);
    } else {
      console.log(error);
    }
});

Python

# This example is written by using Web3.py
# More details on Web3.py could be found here - https://web3py.readthedocs.io/

HTTP Request Example

Send a Deposit Transaction

POST (BSC Mainnet) https://bsc-dataseed.binance.org/

Make a deposit transaction to Shield Protocol V1 on BSC network. More details on how to send a transaction via BSC RPC could be found here, https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_sendrawtransaction

Request Body

Name	Type	Description
jsonrpc	string	"2.0"
method	string	"eth_sendRawTransaction"
params	array	the signed transaction data coerced into string array
id	number	request sequence id, you could use timestamp as id

200 Success response.

{
  "id":64,
  "jsonrpc": "2.0",
  "result": "0x146695866343024d1ad9854a72904d16abec8b1597e098619d2addbd44b14e4c"
}