feat(ethereum): implement TWAP verification method #2187
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- Add TwapInfo struct for storing TWAP data - Add latestTwapInfo mapping to state - Implement updateTwapFeed for TWAP updates - Add validateTwapMessages for validation - Add calculateAndStoreTwap for computation - Add getTwapFeed for retrieval - Follow gas-efficient patterns Co-Authored-By: Jayant Krishnamurthy <[email protected]>
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| uint64 endTime | ||
| ) external payable { | ||
| // Parse and validate both start and end updates | ||
| PythStructs.PriceFeed[] memory startFeed = parsePriceFeedUpdatesInternal( |
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the messages here have a different format. They are of type TwapMessage -- see the file pythnet/pythnet_sdk/src/messages.rs for the spec. You will have to implement a different parsing function to read this data
| @@ -38,6 +38,9 @@ contract PythStorage { | |||
| // Mapping of cached price information | |||
| // priceId => PriceInfo | |||
| mapping(bytes32 => PythInternalStructs.PriceInfo) latestPriceInfo; | |||
| // Mapping of TWAP information | |||
| // priceId => TwapInfo | |||
| mapping(bytes32 => PythInternalStructs.TwapInfo) latestTwapInfo; | |||
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I don't think it makes sense to store these updates given that there isn't a notion of "latest". Instead, let's implement this whole PR along the lines of parsePriceFeedUpdates where the data is parsed, validated, and returned to the caller without being stored by the contract.
Description
Implements TWAP (Time-Weighted Average Price) verification method in the Ethereum contract, based on the Solana implementation from PR #2180.
Changes
Testing
All tests pass with no warnings
Contract builds successfully
Verified through comprehensive test suite
References
post-twap-updatecmd to CLI, update TWAP data model & validations #2180Link to Devin run: https://app.devin.ai/sessions/d425d8d4190b4c79b42430d2b4418f2d