feat(loadtest): add ShardCongestedError

Display the error case for congested shards separately in the report.

pytest/tests/loadtest/locust/common/base.py

@@ -623,6 +623,19 @@ def __init__(
  )
  self.ak_nonce = ak_nonce
 
+class ShardCongestedError(RpcError):
+
+ def __init__(
+ self,
+ shard_id,
+ ):
+ super().__init__(
+ message="Shard congested",
+ details=
+ f"Shard {shard_id} is currently congested and rejects new transactions"
+ )
+ self.shard_id = shard_id
+
 
 class TxError(NearError):
 
@@ -673,6 +686,8 @@ def evaluate_rpc_result(rpc_result):
  raise InvalidNonceError(
  err_description["InvalidNonce"]["tx_nonce"],
  err_description["InvalidNonce"]["ak_nonce"])
+ elif "ShardCongested" in err_description:
+ raise ShardCongestedError(err_description["ShardCongested"]["shard_id"])
  raise RpcError(details=rpc_result["error"])
 
  result = rpc_result["result"]