Added Decimal type for nonce purposes (#663)

* Added Decimal type for comparison.

* Black.

* Modified tests. Bump version to v2.1.3.

* Adds conversion to string for nonce saving through sql.

* Fix test helps.

---------

Co-authored-by: Calina Cenan <calina@cenan.net>

Author: mariacarmina

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 2.1.2
+current_version = 2.1.3
 commit = True
 tag = True
 

ocean_provider/routes/consume.py

@@ -4,6 +4,7 @@
 #
 import json
 import logging
+from _decimal import Decimal
 
 from flask import jsonify, request
 from flask_sieve import validate
@@ -74,11 +75,13 @@ def nonce():
         new_nonce = 1
         update_nonce(address, new_nonce)
         nonce = get_nonce(address)
-        assert int(nonce) == new_nonce, "New nonce could not be stored correctly."
+        assert Decimal(nonce) == Decimal(
+            new_nonce
+        ), "New nonce could not be stored correctly."
 
     logger.info(f"nonce for user {address} is {nonce}")
 
-    response = jsonify(nonce=int(nonce)), 200
+    response = jsonify(nonce=Decimal(nonce)), 200
     logger.info(f"nonce response = {response}")
 
     return response

setup.py

@@ -100,7 +100,7 @@
     url="https://github.com/oceanprotocol/provider-py",
     # fmt: off
     # bumpversion needs single quotes
-    version='2.1.2',
+    version='2.1.3',
     # fmt: on
     zip_safe=False,
 )

tests/helpers/nonce.py

@@ -1,18 +1,19 @@
 import time
+from _decimal import Decimal
 
 from ocean_provider.user_nonce import get_nonce, update_nonce
 
 
-def build_nonce(address) -> int:
+def build_nonce(address) -> Decimal:
     nonce = get_nonce(address)
     if nonce:
         nonce = int(float(nonce)) + 1
         update_nonce(address, nonce)
 
-        return int(nonce)
+        return Decimal(nonce)
 
     update_nonce(address, 1)
-    return 1
+    return Decimal(1)
 
 
 def build_nonce_for_compute() -> int:

tests/test_routes.py

@@ -4,6 +4,7 @@
 #
 import datetime
 import json
+from _decimal import Decimal
 
 import pytest
 from ocean_provider.constants import BaseURLs
@@ -99,7 +100,7 @@ def test_get_nonce(client, publisher_wallet):
     ), f"get nonce endpoint failed: response status {response.status}, data {response.data}"
 
     value = response.json if response.json else json.loads(response.data)
-    assert value["nonce"] == get_nonce(address)
+    assert Decimal(value["nonce"]) == Decimal(get_nonce(address))
 
 
 def test_timestamp_format_nonce(client, ganache_wallet, consumer_wallet, web3):