📃 UsingWitnet

🧙Solidity wizard

Constructor

Parameters	Type	Description
_witnetOracle	WitnetOracle	Address of the WitnetOracleinstance to interact with.

Properties

Name	Visibility	Description
__witnet	Immutable internal	Address of the WitnetOracleinstance to directly interact with.
__witnetBaseFeeOverheadPercentage	Internal	Percentage over base fee to pay when querying new data updates. Defaults to 33%.
__witnetDefaultSLA	Internal	Default Service Level Agreement parameters to be fulfilled by the Wit/Oracle blockchain when solving data updates.

Internal methods

Methods	Description
_witnetCheckQueryResultAvailability(uint256)	Check if the specified query was already reported back from the Wit/Oracle blockchain.
_witnetEstimateEvmReward(uint16)	Estimate the minimum reward required for posting a data request, using tx.gasprice as a reference.
_witnetCheckQueryResponseStatus(uint256)	Check current WitnetV2.ResponseStatus of the specified query.
_witnetCheckQueryResultError(uint256)	Get detailed Witnet.ResultError for the specified query.

Events

Events	Arguments	Description
WitnetQuery	address evmRequester uint256 evmGasPrice uint256 evmReward uint256 queryId bytes32 queryRadHash RadonSLA querySLA	Emitted every time a new randomize query gets posted to the WitnetOracle contract.
WitnetQueryUpgrade	uint256 queryId address evmSender uint256 evmGasPrice uint256 evmReward	Emitted if the EVM reward for solving a previously posted randomize is increased by anyone in any amount.