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web3toolkit/scripts/get_reserve_history_by_block.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+# -*- encoding: utf-8 -*-
+# author: steinkirch
+
+from utils.os import load_config, open_json, log_info
+from utils.web3_wrapper import Web3Wrapper
+
+
+def get_data_for_connection() -> dict:
+    """Prepare a dict of data for connection."""
+
+    data = {}
+    env_keys = ['PAIR_ADDRESSES', 
+                'PROVIDER_URL',
+                'BLOCK_NUMBER',
+                'ABI_JSON_PATH',
+                'PROVIDER_TYPE']
+    env_vars = load_config(env_keys) 
+
+    data['addresses'] = env_vars['PAIR_ADDRESSES']
+    data['network'] = env_vars['PROVIDER_URL']
+    data['block'] = env_vars['BLOCK_NUMBER']
+    data['abi'] = env_vars['ABI_JSON_PATH']
+    data['provider_type'] = env_vars['PROVIDER_TYPE']  
+    return data
+
+
+def get_reserve_by_block(data) -> None:
+    """Establish connection to retrieve reserve history."""
+
+    w3 = Web3Wrapper(mode=data['provider_type'],
+                     network=data['network'])
+    w3.inject_middleware()    
+    w3.get_pair_contract(data['addresses'], open_json(data['abi']))
+    return w3.get_reserves(int(data['block']))
+    
+
+if __name__ == "__main__":
+
+    data = get_data_for_connection()
+    reserve1, reserve2 = get_reserve_by_block(data)
+    log_info(f'reserves: {reserve1}, {reserve2}')