Fix compatibility issues between rust-web3 and alloy, Fallback to firehose or RPC on deserialization errors #6240
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incrypto32
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Some ABIs contain "undefined" as a stateMutability value, which is not part of the official Solidity ABI specification. The spec only defines four valid values: pure, view, nonpayable, and payable. Alloy's StateMutability enum strictly follows the spec and rejects "undefined" during deserialization, causing subgraph deployment failures with: unknown variant `undefined`, expected one of `pure`, `view`, `nonpayable`, `payable` This adds a normalize_abi_json() function that preprocesses ABI JSON before deserialization, replacing "undefined" with "nonpayable" (the default state mutability). This handles non-compliant ABIs gracefully while maintaining spec compliance. Also adds a unit test to verify the normalization works correctly. 🤖 Generated with Claude Code Co-Authored-By: Claude <[email protected]>
Extends normalize_abi_json() to also remove duplicate constructors from ABIs. Some non-compliant ABIs contain multiple constructor entries (e.g., DolomiteMargin ABI has two constructors, likely from incorrectly merged contract ABIs). Alloy's JsonAbi only allows one constructor and fails with 'duplicate field self.constructor' when encountering duplicates. ethabi's Contract type silently handled this by only storing one constructor (the last one encountered during deserialization). The fix keeps only the first constructor and removes any subsequent ones, matching the Solidity spec that a contract can only have one constructor. Fixes subgraph QmacPbft3reGGGL4VBzrZCKHeLpRgU9X2wUJjvPBVweyRV deployment.
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dwerner
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Jan 6, 2026
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lgtm! (couple comments, just around calling out the patching/normalization)
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@dwerner i just added two more normalizations and added comments. |
dwerner
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This PR addresses a few issues.