Merge pull request #31 from spicehq/yf/ommitted-output-field-in-trace

handle missing output field in trace

Author: y-f-u

ethereumetl/jobs/extract_contracts_job.py

@@ -79,12 +79,14 @@ def process_call(transaction_trace, block_number):
         for trace in contract_creation_traces:
             contract = EthContract()
             contract.address = trace["to"]
-            bytecode = trace['output']
-            contract.bytecode = bytecode
             contract.block_number = trace['block_number']
 
-            function_sighashes = self.contract_service.get_function_sighashes(bytecode)
+            bytecode = None
+            if "output" in trace:
+                bytecode = trace['output']
+                contract.bytecode = bytecode
 
+            function_sighashes = self.contract_service.get_function_sighashes(bytecode)
             contract.function_sighashes = function_sighashes
             contract.is_erc20 = self.contract_service.is_erc20_contract(function_sighashes)
             contract.is_erc721 = self.contract_service.is_erc721_contract(function_sighashes)