fix: correct mpol validation

AlbertoCentonze · AlbertoCentonze · commit 0ec16507ee7c · 2025-09-17T19:46:35.000+02:00
diff --git a/contracts/interfaces/IMonetaryPolicy.vyi b/contracts/interfaces/IMonetaryPolicy.vyi
@@ -1,2 +1,6 @@
 def rate_write() -> uint256:
     ...
+
+@view
+def rate() -> uint256:
+    ...
diff --git a/contracts/lending/LendingFactory.vy b/contracts/lending/LendingFactory.vy
@@ -119,7 +119,7 @@ def create(
     A_ratio: uint256 = 10**18 * _A // (_A - 1)
 
     # Validate price oracle and monetary policy
-    extcall _monetary_policy.rate_write()
+    unused: uint256 = staticcall _monetary_policy.rate()
     p: uint256 = (staticcall _price_oracle.price())
     assert p > 0
     assert extcall _price_oracle.price_w() == p
diff --git a/contracts/mpolicies/SemilogMonetaryPolicy.vy b/contracts/mpolicies/SemilogMonetaryPolicy.vy
@@ -10,6 +10,7 @@
 @author Curve.fi
 @license Copyright (c) Curve.Fi, 2020-2024 - all rights reserved
 """
+# TODO bump to vyper 0.4.3
 from vyper.interfaces import ERC20
 
 

-Original file line number
+Diff line change
@@ @@ -1,2 +1,6 @@ @@
 def rate_write() -> uint256:
     ...
++
 +@view
 +def rate() -> uint256:
 +    ...