GHO CCIP 1.5 Maintenance Upgrade

diffs/AaveV3Arbitrum_GHOCCIP150Upgrade_20241021_before_AaveV3Arbitrum_GHOCCIP150Upgrade_20241021_after.md

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+## Emodes changes
+
+## Raw diff
+
+```json
+{}
+```

diffs/AaveV3Ethereum_GHOCCIP150Upgrade_20241021_before_AaveV3Ethereum_GHOCCIP150Upgrade_20241021_after.md

@@ -0,0 +1,7 @@
+## Emodes changes
+
+## Raw diff
+
+```json
+{}
+```

src/20241021_Multi_GHOCCIP150Upgrade/AaveV3Arbitrum_GHOCCIP150Upgrade_20241021.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import {TransparentUpgradeableProxy} from 'solidity-utils/contracts/transparent-proxy/TransparentUpgradeableProxy.sol';
+import {ProxyAdmin} from 'solidity-utils/contracts/transparent-proxy/ProxyAdmin.sol';
+import {IProposalGenericExecutor} from 'aave-helpers/src/interfaces/IProposalGenericExecutor.sol';
+import {MiscArbitrum} from 'aave-address-book/MiscArbitrum.sol';
+import {IUpgradeableBurnMintTokenPool} from 'src/interfaces/ccip/IUpgradeableBurnMintTokenPool.sol';
+import {IRateLimiter} from 'src/interfaces/ccip/IRateLimiter.sol';
+
+/**
+ * @title GHO CCIP 1.50 Upgrade
+ * @author Aave Labs
+ * - Discussion: https://governance.aave.com/t/bgd-technical-maintenance-proposals/15274/51
+ */
+contract AaveV3Arbitrum_GHOCCIP150Upgrade_20241021 is IProposalGenericExecutor {
+  uint64 public constant ETH_CHAIN_SELECTOR = 5009297550715157269;
+
+  // https://arbiscan.io/address/0xb0e1c7830aA781362f79225559Aa068E6bDaF1d1
+  address public constant TOKEN_POOL_IMPL = 0xb0e1c7830aA781362f79225559Aa068E6bDaF1d1;
+  // https://arbiscan.io/address/0x26329558f08cbb40d6a4CCA0E0C67b29D64A8c50
+  address public constant GHO_CCIP_PROXY_POOL = 0x26329558f08cbb40d6a4CCA0E0C67b29D64A8c50;
+
+  function execute() external {
+    IUpgradeableBurnMintTokenPool tokenPoolProxy = IUpgradeableBurnMintTokenPool(
+      MiscArbitrum.GHO_CCIP_TOKEN_POOL
+    );
+
+    ProxyAdmin(MiscArbitrum.PROXY_ADMIN).upgrade(
+      TransparentUpgradeableProxy(payable(address(tokenPoolProxy))),
+      TOKEN_POOL_IMPL
+    );
+
+    // Update proxyPool address
+    tokenPoolProxy.setProxyPool(GHO_CCIP_PROXY_POOL);
+
+    // Set rate limit
+    tokenPoolProxy.setChainRateLimiterConfig(
+      ETH_CHAIN_SELECTOR,
+      getOutBoundRateLimiterConfig(),
+      getInBoundRateLimiterConfig()
+    );
+  }
+
+  /// @notice Returns the rate limiter configuration for the outbound rate limiter
+  /// The onRamp rate limit for ARB => ETH will be as follows:
+  /// Capacity: 350_000 GHO
+  /// Rate: 100 GHO per second (=> 360_000 GHO per hour)
+  /// @return The rate limiter configuration
+  function getOutBoundRateLimiterConfig() public pure returns (IRateLimiter.Config memory) {
+    return IRateLimiter.Config({isEnabled: true, capacity: 350_000e18, rate: 100e18});
+  }
+
+  /// @notice Returns the rate limiter configuration for the inbound rate limiter
+  /// The offRamp rate limit for ETH => ARB will be as follows:
+  /// Capacity: 350_000 GHO
+  /// Rate: 100 GHO per second (=> 360_000 GHO per hour)
+  /// @return The rate limiter configuration
+  function getInBoundRateLimiterConfig() public pure returns (IRateLimiter.Config memory) {
+    return IRateLimiter.Config({isEnabled: true, capacity: 350_000e18, rate: 100e18});
+  }
+}