497 proxy high memory usage (#504)

* Add limit 1 for fetchone requests to db. #497
* Remove moving of old transactions. #497
* Add limit on number of return logs. #497

proxy/indexer/indexer_base.py

@@ -26,7 +26,6 @@ def __init__(self,
         self.evm_loader_id = evm_loader_id
         self.client = Client(solana_url)
         self.transaction_receipts = TrxReceiptsStorage('transaction_receipts')
-        self._move_data_from_old_table()
         self.max_known_tx = self.transaction_receipts.max_known_trx()
         self.last_slot = self._init_last_slot('receipt', last_slot)
         self.current_slot = 0
@@ -72,12 +71,6 @@ def _init_last_slot(self, name: str, last_known_slot: int):
         self.info(f'START_SLOT={START_SLOT}: started the {name} from {start_int_slot}')
         return start_int_slot
 
-    def _move_data_from_old_table(self):
-        if self.transaction_receipts.size() == 0:
-            transaction_receipts_old = SQLDict(tablename="known_transactions")
-            for signature, trx in transaction_receipts_old.iteritems():
-                self._add_trx(signature, trx)
-
     def run(self):
         while (True):
             try:

proxy/indexer/utils.py

@@ -400,6 +400,8 @@ def get_logs(self, fromBlock = None, toBlock = None, address = None, topics = No
             if idx < len(queries) - 1:
                 query_string += " AND "
 
+        query_string += ' ORDER BY slot desc LIMIT 1000'
+
         self.debug(query_string)
         self.debug(params)