ethereum: avoid large trace filter requests (#3733)

Author: leoyvens

chain/ethereum/src/ethereum_adapter.rs

@@ -697,7 +697,7 @@ impl EthereumAdapter {
     ) -> Box<dyn Stream<Item = EthereumCall, Error = Error> + Send + 'a> {
         let eth = self.clone();
 
-        let addresses: Vec<H160> = call_filter
+        let mut addresses: Vec<H160> = call_filter
             .contract_addresses_function_signatures
             .iter()
             .filter(|(_addr, (start_block, _fsigs))| start_block <= &to)
@@ -712,6 +712,12 @@ impl EthereumAdapter {
             return Box::new(stream::empty());
         }
 
+        if addresses.len() > 100 {
+            // If the address list is large, request all traces, this avoids generating huge
+            // requests and potentially getting 413 errors.
+            addresses = vec![];
+        }
+
         Box::new(
             eth.trace_stream(&logger, subgraph_metrics, from, to, addresses)
                 .filter_map(|trace| EthereumCall::try_from_trace(&trace))