Add support for 1inch router

mev_inspect/abis/1inch/AggregationRouterV3.json

@@ -0,0 +1 @@
+[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"reason","type":"string"}],"name":"Error","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"contract IERC20","name":"srcToken","type":"address"},{"indexed":false,"internalType":"contract IERC20","name":"dstToken","type":"address"},{"indexed":false,"internalType":"address","name":"dstReceiver","type":"address"},{"indexed":false,"internalType":"uint256","name":"spentAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"returnAmount","type":"uint256"}],"name":"Swapped","type":"event"},{"inputs":[],"name":"destroy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IAggregationExecutor","name":"caller","type":"address"},{"components":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"contract IERC20","name":"dstToken","type":"address"},{"internalType":"address","name":"srcReceiver","type":"address"},{"internalType":"address","name":"dstReceiver","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturnAmount","type":"uint256"},{"internalType":"uint256","name":"flags","type":"uint256"},{"internalType":"bytes","name":"permit","type":"bytes"}],"internalType":"struct AggregationRouterV3.SwapDescription","name":"desc","type":"tuple"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"discountedSwap","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"},{"internalType":"uint256","name":"gasLeft","type":"uint256"},{"internalType":"uint256","name":"chiSpent","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"rescueFunds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IAggregationExecutor","name":"caller","type":"address"},{"components":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"contract IERC20","name":"dstToken","type":"address"},{"internalType":"address","name":"srcReceiver","type":"address"},{"internalType":"address","name":"dstReceiver","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturnAmount","type":"uint256"},{"internalType":"uint256","name":"flags","type":"uint256"},{"internalType":"bytes","name":"permit","type":"bytes"}],"internalType":"struct AggregationRouterV3.SwapDescription","name":"desc","type":"tuple"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"swap","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"},{"internalType":"uint256","name":"gasLeft","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturn","type":"uint256"},{"internalType":"bytes32[]","name":"","type":"bytes32[]"}],"name":"unoswap","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturn","type":"uint256"},{"internalType":"bytes32[]","name":"pools","type":"bytes32[]"},{"internalType":"bytes","name":"permit","type":"bytes"}],"name":"unoswapWithPermit","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"}],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

mev_inspect/classifiers/specs/__init__.py

@@ -10,6 +10,7 @@ from .compound import COMPOUND_CLASSIFIER_SPECS
 from .cryptopunks import CRYPTOPUNKS_CLASSIFIER_SPECS
 from .curve import CURVE_CLASSIFIER_SPECS
 from .erc20 import ERC20_CLASSIFIER_SPECS
+from .one_inch import ONE_INCH_CLASSIFIER_SPECS
 from .opensea import OPENSEA_CLASSIFIER_SPECS
 from .uniswap import UNISWAP_CLASSIFIER_SPECS
 from .weth import WETH_ADDRESS, WETH_CLASSIFIER_SPECS
@@ -27,6 +28,7 @@ ALL_CLASSIFIER_SPECS = (
     + CRYPTOPUNKS_CLASSIFIER_SPECS
     + OPENSEA_CLASSIFIER_SPECS
     + BANCOR_CLASSIFIER_SPECS
+    + ONE_INCH_CLASSIFIER_SPECS
 )
 
 _SPECS_BY_ABI_NAME_AND_PROTOCOL: Dict[

mev_inspect/classifiers/specs/one_inch.py

@@ -0,0 +1,60 @@
+from typing import List, Optional
+
+from mev_inspect.schemas.classifiers import ClassifierSpec, SwapClassifier
+from mev_inspect.schemas.swaps import Swap
+from mev_inspect.schemas.traces import DecodedCallTrace, Protocol
+from mev_inspect.schemas.transfers import Transfer
+
+
+class OneInchSwapClassifier(SwapClassifier):
+    @staticmethod
+    def parse_swap(
+        trace: DecodedCallTrace,
+        prior_transfers: List[Transfer],
+        child_transfers: List[Transfer],
+    ) -> Optional[Swap]:
+        if trace.error is not None:
+            return None
+
+        desc = trace.inputs["desc"]
+        [srcToken, dstToken, srcReceiver, dstReceiver, amountIn, *_] = desc
+
+        transfer_out_candidates = [
+            transfer
+            for transfer in child_transfers
+            if (
+                transfer.token_address == dstToken
+                and transfer.to_address == dstReceiver
+            )
+        ]
+
+        if len(transfer_out_candidates) == 0:
+            raise RuntimeError("1inch expected at least one transfer out")
+
+        return Swap(
+            abi_name=trace.abi_name,
+            transaction_hash=trace.transaction_hash,
+            transaction_position=trace.transaction_position,
+            block_number=trace.block_number,
+            trace_address=trace.trace_address,
+            contract_address=trace.to_address,
+            protocol=trace.protocol,
+            from_address=srcReceiver,
+            to_address=dstReceiver,
+            token_in_address=srcToken,
+            token_in_amount=amountIn,
+            token_out_address=dstToken,
+            token_out_amount=transfer_out_candidates[0].amount,
+            error=trace.error,
+        )
+
+
+ONE_INCH_ROUTER_SPEC = ClassifierSpec(
+    abi_name="AggregationRouterV3",
+    protocol=Protocol.one_inch,
+    classifiers={
+        "swap(address,(address,address,address,address,uint256,uint256,uint256,bytes),bytes)": OneInchSwapClassifier,
+    },
+)
+
+ONE_INCH_CLASSIFIER_SPECS = [ONE_INCH_ROUTER_SPEC]

mev_inspect/schemas/traces.py

@@ -50,6 +50,7 @@ class Protocol(Enum):
     cryptopunks = "cryptopunks"
     bancor = "bancor"
     opensea = "opensea"
+    one_inch = "1inch"
 
 
 class ClassifiedTrace(Trace):