Contract upgrade
Upgrade Architecture Overview
The Elytro upgrade system follows a proxy pattern with several key security features:
ERC-1967 Proxy Pattern: Uses the standard storage slot for implementation address
Module-Based Upgrade Control: Only authorized modules can trigger upgrades
Separation of Concerns: Clear distinction between upgrade authorization and execution
Data Migration Support: Framework for handling state transitions between versions
The upgrade system consists of the following components:
ElytroUpgradeManager: Core implementation of upgrade logic
UpgradeModule: External module that authorizes upgrades
IUpgradable Interface: Contract interface defining upgrade methods
Proxy Contract: ERC-1967 compatible proxy that delegates calls to implementation
Upgrade flow
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