Price Feed Berachain ​

Git Source

The PriceFeed contract is a smart contract that provides the latest price data for a given currency pair. It is similar to Chainlink's AggregatorV3Interface in that it retrieves price data from an external source, in this case, the Oracle module. The PriceFeed contract imports the AggregatorV3Interface and the Oracle module, and it implements the required functions to fetch the latest price data for a specified currency pair.

The PriceFeed contract uses the Oracle module to interact with the precompiled contract at a specific address, which stores the price data for various currency pairs. It initializes the contract with a currency pair and retrieves the precision (number of decimals) for that pair. The contract provides functions to get the latest price data, including the round ID, price, timestamp, and other metadata.

By leveraging the Oracle module, the PriceFeed contract ensures that the price data is reliable and secure, similar to how Chainlink's decentralized oracle network provides high-quality price data.

Note: Link to existing contract ABI's can be found on Github here.

Inherits:AggregatorV3Interface

This contract provides the latest price data for a given currency pair.

This contract implements Chainlink's AggregatorV3Interface.

State Variables ​

oracleModule ​

IOracleModule internal immutable oracleModule = IOracleModule(0x9202Af6Ce925b26AE6B25aDfff0B2705147e195F);

IOracleModule internal immutable oracleModule = IOracleModule(0x9202Af6Ce925b26AE6B25aDfff0B2705147e195F);

pair ​

string internal pair;

string internal pair;

versionNumber ​

uint256 internal immutable versionNumber;

uint256 internal immutable versionNumber;

precision ​

uint8 internal immutable precision;

uint8 internal immutable precision;

Functions ​

constructor ​

Only the Oracle Module can create a new PriceFeed instance.

Constructs a new PriceFeed instance.

constructor(string memory currencyPair);

constructor(string memory currencyPair);

Parameters

decimals ​

Returns the number of decimal places used in the price data.

function decimals() external view returns (uint8);

function decimals() external view returns (uint8);

description ​

Returns a description of the currency pair for which the contract provides price data.

function description() external view returns (string memory);

function description() external view returns (string memory);

version ​

Returns the version number for the PriceFeed contract.

function version() external view returns (uint256);

function version() external view returns (uint256);

getRoundData ​

NOT CURRENTLY SUPPORTED.

Returns the latest price data for the specified round.

function getRoundData(uint80 _roundId)
    external
    view
    returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);

function getRoundData(uint80 _roundId)
    external
    view
    returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);

Parameters

latestRoundData ​

answeredInRound is deprecated.

updatedAt is not supported.

roundId is always equal to block height.

Returns the latest price data for the specified currency pair.

function latestRoundData()
    external
    view
    returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);

function latestRoundData()
    external
    view
    returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);