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IPriceSubmitter#

Source

Interface for the PriceSubmitter contract.

This is the contract used by all FTSO data providers to submit their data.

Events#

HashSubmitted#

Defined in IPriceSubmitter (Docs, Source).

event HashSubmitted(
    address submitter,
    uint256 epochId,
    bytes32 hash,
    uint256 timestamp
)

Emitted when a hash is submitted through submitHash.

Parameters Type Description
submitter address Address of the submitting data provider.
epochId uint256 Current price epoch ID.
hash bytes32 Submitted hash.
timestamp uint256 Current block timestamp.

PricesRevealed#

Defined in IPriceSubmitter (Docs, Source).

event PricesRevealed(
    address voter,
    uint256 epochId,
    contract IFtsoGenesis[] ftsos,
    uint256[] prices,
    uint256 random,
    uint256 timestamp
)

Emitted when prices are revealed through revealPrice.

Parameters Type Description
voter address Address of the revealing data provider.
epochId uint256 ID of the epoch in which the price hash is revealed.
ftsos contract IFtsoGenesis[] Array of FTSOs that correspond to the indexes in the call.
prices uint256[] List of revealed prices.
random uint256 Revealed random number.
timestamp uint256 Current block timestamp.

Functions#

getCurrentRandom#

Defined in IPriceSubmitter (Docs, Source).

function getCurrentRandom(
) external view returns (
    uint256);

Returns the random number for the previous epoch, obtained from the random numbers provided by all data providers along with their data submissions. Note that the random number for the previous epoch keeps updating as new submissions are revealed.

Returns Type Description
[0] uint256 Random number calculated from all data provider's submissions.

getFtsoManager#

Defined in IPriceSubmitter (Docs, Source).

function getFtsoManager(
) external view returns (
    contract IFtsoManagerGenesis);

Returns the address of the FtsoManager contract.

getFtsoRegistry#

Defined in IPriceSubmitter (Docs, Source).

function getFtsoRegistry(
) external view returns (
    contract IFtsoRegistryGenesis);

Returns the address of the FtsoRegistry contract.

getRandom#

Defined in IPriceSubmitter (Docs, Source).

function getRandom(
    uint256 _epochId
) external view returns (
    uint256);

Returns the random number used in a specific past epoch, obtained from the random numbers provided by all data providers along with their data submissions.

Parameters Type Description
_epochId uint256 ID of the queried epoch. Current epoch cannot be queried, and the previous epoch is constantly updated as data providers reveal their prices and random numbers. Note that only the last 50 epochs can be queried and there is no bounds checking for this parameter. Out-of-bounds queries return undefined values.
Returns Type Description
[0] uint256 The random number used in that epoch.

getVoterWhitelister#

Defined in IPriceSubmitter (Docs, Source).

function getVoterWhitelister(
) external view returns (
    address);

Returns the address of the VoterWhitelister contract managing the data provider whitelist.

revealPrices#

Defined in IPriceSubmitter (Docs, Source).

function revealPrices(
    uint256 _epochId,
    uint256[] _ftsoIndices,
    uint256[] _prices,
    uint256 _random
) external;

Reveals submitted prices during the epoch reveal period. The hash of FTSO indices, prices, random number, and voter address must be equal to the hash previously submitted with submitHash. Emits a PricesRevealed event.

Parameters Type Description
_epochId uint256 ID of the epoch to which the price hashes are submitted.
_ftsoIndices uint256[] List of FTSO indices in ascending order.
_prices uint256[] List of submitted prices in USD.
_random uint256 Submitted random number.

submitHash#

Defined in IPriceSubmitter (Docs, Source).

function submitHash(
    uint256 _epochId,
    bytes32 _hash
) external;

Submits a hash for the current epoch. Can only be called by FTSO data providers whitelisted through the VoterWhitelisted contract. Emits the HashSubmitted event.

Parameters Type Description
_epochId uint256 ID of the target epoch to which the hash is submitted.
_hash bytes32 A hash of the FTSO indices, prices, random number, and voter address.

voterWhitelistBitmap#

Defined in IPriceSubmitter (Docs, Source).

function voterWhitelistBitmap(
    address _voter
) external view returns (
    uint256);

Returns a bitmap of all FTSOs for which a data provider is allowed to submit prices or hashes.

Parameters Type Description
_voter address Address of the voter.
Returns Type Description
[0] uint256 If a data provider is allowed to vote for a given FTSO index, the corresponding bit in the result is 1.