Upgrades
This crate provides interfaces and utilities related to upgradeability.
Core
IUpgradeable
use openzeppelin::upgrades::interface::IUpgradeable;Interface of an upgradeable contract.
Functions
upgrade(new_class_hash: ClassHash) external
Upgrades the contract code by updating its class hash.
| This function is usually protected by an Access Control mechanism. |
UpgradeableComponent
use openzeppelin::upgrades::upgradeable::UpgradeableComponent;Upgradeable component.
Internal Implementations
InternalImpl
Events
upgrade(ref self: ContractState, new_class_hash: ClassHash) internal
Upgrades the contract by updating the contract class hash.
Requirements:
-
new_class_hashmust be different from zero.
Emits an Upgraded event.
Upgraded(class_hash: ClassHash) event
Emitted when the class hash is upgraded.