CCIP-4269 - Make registered TokenPools swappable

.changeset/bright-keys-whisper.md

@@ -0,0 +1,5 @@
+---
+"chainlink": patch
+---
+
+allow different decimals on different chains for token pools

.github/e2e-tests.yml

@@ -1096,19 +1096,6 @@ runner-test-matrix:
     test_cmd: cd integration-tests/ccip-tests/smoke && go test ccip_test.go -test.run ^TestSmokeCCIPForBidirectionalLane$ -timeout 30m -count=1 -test.parallel=1 -json
     test_env_vars:
       E2E_TEST_SELECTED_NETWORK: SIMULATED_1,SIMULATED_2
-
-  - id: ccip-smoke-1.4-pools
-    path: integration-tests/ccip-tests/smoke/ccip_test.go
-    test_env_type: docker
-    runs_on: ubuntu-latest
-    triggers:
-      - PR E2E CCIP Tests
-      - Merge Queue E2E CCIP Tests
-      - Nightly E2E Tests
-    test_cmd: cd integration-tests/ccip-tests/smoke && go test ccip_test.go -test.run ^TestSmokeCCIPForBidirectionalLane$ -timeout 30m -count=1 -test.parallel=1 -json
-    test_env_vars:
-      E2E_TEST_SELECTED_NETWORK: SIMULATED_1,SIMULATED_2
-    test_config_override_path: integration-tests/ccip-tests/testconfig/tomls/contract-version1.4.toml
 
   - id: ccip-smoke-usdc
     path: integration-tests/ccip-tests/smoke/ccip_test.go

.github/workflows/solidity-foundry.yml

@@ -34,7 +34,7 @@ jobs:
             { "name": "functions", "setup": { "run-coverage": false, "min-coverage": 98.5, "run-gas-snapshot": true, "run-forge-fmt": false }},
             { "name": "keystone", "setup": { "run-coverage": true, "min-coverage": 72.8, "run-gas-snapshot": false, "run-forge-fmt": false }},
             { "name": "l2ep", "setup": { "run-coverage": true, "min-coverage": 61.0, "run-gas-snapshot": true, "run-forge-fmt": false }},
-            { "name": "liquiditymanager", "setup": { "run-coverage": true, "min-coverage": 46.3, "run-gas-snapshot": true, "run-forge-fmt": false }},
+            { "name": "liquiditymanager", "setup": { "run-coverage": true, "min-coverage": 44, "run-gas-snapshot": true, "run-forge-fmt": false }},
             { "name": "llo-feeds", "setup": { "run-coverage": true, "min-coverage": 49.3, "run-gas-snapshot": true, "run-forge-fmt": false }},
             { "name": "operatorforwarder", "setup": { "run-coverage": true, "min-coverage": 55.7, "run-gas-snapshot": true, "run-forge-fmt": false }},
             { "name": "shared", "setup": { "run-coverage": true, "extra-coverage-params": "--no-match-path='*CallWithExactGas*' --ir-minimum", "min-coverage": 32.6, "run-gas-snapshot": true, "run-forge-fmt": false }},

contracts/.changeset/modern-mayflies-give.md

@@ -0,0 +1,10 @@
+---
+'@chainlink/contracts': patch
+---
+
+allow multiple remote pools per chain selector
+
+
+PR issue: CCIP-4269
+
+Solidity Review issue: CCIP-3966

contracts/gas-snapshots/liquiditymanager.gas-snapshot

@@ -3,14 +3,14 @@ LiquidityManager_addLiquidity:test_addLiquiditySuccess() (gas: 279198)
 LiquidityManager_rebalanceLiquidity:test_InsufficientLiquidityReverts() (gas: 206764)
 LiquidityManager_rebalanceLiquidity:test_InvalidRemoteChainReverts() (gas: 192374)
 LiquidityManager_rebalanceLiquidity:test_rebalanceBetweenPoolsSuccess() (gas: 9141798)
-LiquidityManager_rebalanceLiquidity:test_rebalanceBetweenPoolsSuccess_AlreadyFinalized() (gas: 8942122)
-LiquidityManager_rebalanceLiquidity:test_rebalanceBetweenPools_MultiStageFinalization() (gas: 8937262)
-LiquidityManager_rebalanceLiquidity:test_rebalanceBetweenPools_NativeRewrap() (gas: 8865000)
-LiquidityManager_rebalanceLiquidity:test_rebalanceLiquiditySuccess() (gas: 382946)
+LiquidityManager_rebalanceLiquidity:test_rebalanceBetweenPoolsSuccess_AlreadyFinalized() (gas: 9246772)
+LiquidityManager_rebalanceLiquidity:test_rebalanceBetweenPools_MultiStageFinalization() (gas: 9241912)
+LiquidityManager_rebalanceLiquidity:test_rebalanceBetweenPools_NativeRewrap() (gas: 9169653)
+LiquidityManager_rebalanceLiquidity:test_rebalanceLiquiditySuccess() (gas: 382928)
 LiquidityManager_receive:test_receive_success() (gas: 21182)
 LiquidityManager_removeLiquidity:test_InsufficientLiquidityReverts() (gas: 184959)
 LiquidityManager_removeLiquidity:test_OnlyFinanceRoleReverts() (gas: 10872)
-LiquidityManager_removeLiquidity:test_removeLiquiditySuccess() (gas: 236379)
+LiquidityManager_removeLiquidity:test_removeLiquiditySuccess() (gas: 236361)
 LiquidityManager_setCrossChainRebalancer:test_OnlyOwnerReverts() (gas: 17005)
 LiquidityManager_setCrossChainRebalancer:test_ZeroAddressReverts() (gas: 21669)
 LiquidityManager_setCrossChainRebalancer:test_ZeroChainSelectorReverts() (gas: 13099)
@@ -19,7 +19,7 @@ LiquidityManager_setFinanceRole:test_OnlyOwnerReverts() (gas: 10987)
 LiquidityManager_setFinanceRole:test_setFinanceRoleSuccess() (gas: 21836)
 LiquidityManager_setLocalLiquidityContainer:test_OnlyOwnerReverts() (gas: 11030)
 LiquidityManager_setLocalLiquidityContainer:test_ReverstWhen_CalledWithTheZeroAddress() (gas: 10621)
-LiquidityManager_setLocalLiquidityContainer:test_setLocalLiquidityContainerSuccess() (gas: 3479905)
+LiquidityManager_setLocalLiquidityContainer:test_setLocalLiquidityContainerSuccess() (gas: 3784709)
 LiquidityManager_setMinimumLiquidity:test_OnlyOwnerReverts() (gas: 10925)
 LiquidityManager_setMinimumLiquidity:test_setMinimumLiquiditySuccess() (gas: 36389)
 LiquidityManager_withdrawERC20:test_withdrawERC20Reverts() (gas: 180396)

contracts/src/v0.8/ccip/pools/BurnFromMintTokenPool.sol

@@ -18,14 +18,15 @@ import {SafeERC20} from "../../vendor/openzeppelin-solidity/v4.8.3/contracts/tok
 contract BurnFromMintTokenPool is BurnMintTokenPoolAbstract, ITypeAndVersion {
   using SafeERC20 for IBurnMintERC20;
 
-  string public constant override typeAndVersion = "BurnFromMintTokenPool 1.5.0";
+  string public constant override typeAndVersion = "BurnFromMintTokenPool 1.5.1";
 
   constructor(
     IBurnMintERC20 token,
+    uint8 localTokenDecimals,
     address[] memory allowlist,
     address rmnProxy,
     address router
-  ) TokenPool(token, allowlist, rmnProxy, router) {
+  ) TokenPool(token, localTokenDecimals, allowlist, rmnProxy, router) {
     // Some tokens allow burning from the sender without approval, but not all do.
     // To be safe, we approve the pool to burn from the pool.
     token.safeIncreaseAllowance(address(this), type(uint256).max);

contracts/src/v0.8/ccip/pools/BurnMintTokenPool.sol

@@ -14,14 +14,15 @@ import {TokenPool} from "./TokenPool.sol";
 /// If that is expected, please make sure the token's burner/minter roles are adjustable.
 /// @dev This contract is a variant of BurnMintTokenPool that uses `burn(amount)`.
 contract BurnMintTokenPool is BurnMintTokenPoolAbstract, ITypeAndVersion {
-  string public constant override typeAndVersion = "BurnMintTokenPool 1.5.0";
+  string public constant override typeAndVersion = "BurnMintTokenPool 1.5.1";
 
   constructor(
     IBurnMintERC20 token,
+    uint8 localTokenDecimals,
     address[] memory allowlist,
     address rmnProxy,
     address router
-  ) TokenPool(token, allowlist, rmnProxy, router) {}
+  ) TokenPool(token, localTokenDecimals, allowlist, rmnProxy, router) {}
 
   /// @inheritdoc BurnMintTokenPoolAbstract
   function _burn(

contracts/src/v0.8/ccip/pools/BurnMintTokenPoolAbstract.sol

@@ -25,7 +25,10 @@ abstract contract BurnMintTokenPoolAbstract is TokenPool {
 
     emit Burned(msg.sender, lockOrBurnIn.amount);
 
-    return Pool.LockOrBurnOutV1({destTokenAddress: getRemoteToken(lockOrBurnIn.remoteChainSelector), destPoolData: ""});
+    return Pool.LockOrBurnOutV1({
+      destTokenAddress: getRemoteToken(lockOrBurnIn.remoteChainSelector),
+      destPoolData: _encodeLocalDecimals()
+    });
   }
 
   /// @notice Mint tokens from the pool to the recipient
@@ -35,11 +38,15 @@ abstract contract BurnMintTokenPoolAbstract is TokenPool {
   ) external virtual override returns (Pool.ReleaseOrMintOutV1 memory) {
     _validateReleaseOrMint(releaseOrMintIn);
 
+    // Calculate the local amount
+    uint256 localAmount =
+      _calculateLocalAmount(releaseOrMintIn.amount, _parseRemoteDecimals(releaseOrMintIn.sourcePoolData));
+
     // Mint to the receiver
-    IBurnMintERC20(address(i_token)).mint(releaseOrMintIn.receiver, releaseOrMintIn.amount);
+    IBurnMintERC20(address(i_token)).mint(releaseOrMintIn.receiver, localAmount);
 
-    emit Minted(msg.sender, releaseOrMintIn.receiver, releaseOrMintIn.amount);
+    emit Minted(msg.sender, releaseOrMintIn.receiver, localAmount);
 
-    return Pool.ReleaseOrMintOutV1({destinationAmount: releaseOrMintIn.amount});
+    return Pool.ReleaseOrMintOutV1({destinationAmount: localAmount});
   }
 }

contracts/src/v0.8/ccip/pools/BurnWithFromMintTokenPool.sol

@@ -20,10 +20,11 @@ contract BurnWithFromMintTokenPool is BurnMintTokenPoolAbstract, ITypeAndVersion
 
   constructor(
     IBurnMintERC20 token,
+    uint8 localTokenDecimals,
     address[] memory allowlist,
     address rmnProxy,
     address router
-  ) TokenPool(token, allowlist, rmnProxy, router) {
+  ) TokenPool(token, localTokenDecimals, allowlist, rmnProxy, router) {
     // Some tokens allow burning from the sender without approval, but not all do.
     // To be safe, we approve the pool to burn from the pool.
     token.safeIncreaseAllowance(address(this), type(uint256).max);
@@ -37,6 +38,6 @@ contract BurnWithFromMintTokenPool is BurnMintTokenPoolAbstract, ITypeAndVersion
   }
 
   function typeAndVersion() external pure virtual override returns (string memory) {
-    return "BurnWithFromMintTokenPool 1.5.0";
+    return "BurnWithFromMintTokenPool 1.5.1";
   }
 }

contracts/src/v0.8/ccip/pools/LockReleaseTokenPool.sol

@@ -23,7 +23,7 @@ contract LockReleaseTokenPool is TokenPool, ILiquidityContainer, ITypeAndVersion
 
   event LiquidityTransferred(address indexed from, uint256 amount);
 
-  string public constant override typeAndVersion = "LockReleaseTokenPool 1.5.0";
+  string public constant override typeAndVersion = "LockReleaseTokenPool 1.5.1";
 
   /// @dev Whether or not the pool accepts liquidity.
   /// External liquidity is not required when there is one canonical token deployed to a chain,
@@ -35,11 +35,12 @@ contract LockReleaseTokenPool is TokenPool, ILiquidityContainer, ITypeAndVersion
 
   constructor(
     IERC20 token,
+    uint8 localTokenDecimals,
     address[] memory allowlist,
     address rmnProxy,
     bool acceptLiquidity,
     address router
-  ) TokenPool(token, allowlist, rmnProxy, router) {
+  ) TokenPool(token, localTokenDecimals, allowlist, rmnProxy, router) {
     i_acceptLiquidity = acceptLiquidity;
   }
 
@@ -52,7 +53,10 @@ contract LockReleaseTokenPool is TokenPool, ILiquidityContainer, ITypeAndVersion
 
     emit Locked(msg.sender, lockOrBurnIn.amount);
 
-    return Pool.LockOrBurnOutV1({destTokenAddress: getRemoteToken(lockOrBurnIn.remoteChainSelector), destPoolData: ""});
+    return Pool.LockOrBurnOutV1({
+      destTokenAddress: getRemoteToken(lockOrBurnIn.remoteChainSelector),
+      destPoolData: _encodeLocalDecimals()
+    });
   }
 
   /// @notice Release tokens from the pool to the recipient
@@ -62,12 +66,16 @@ contract LockReleaseTokenPool is TokenPool, ILiquidityContainer, ITypeAndVersion
   ) external virtual override returns (Pool.ReleaseOrMintOutV1 memory) {
     _validateReleaseOrMint(releaseOrMintIn);
 
+    // Calculate the local amount
+    uint256 localAmount =
+      _calculateLocalAmount(releaseOrMintIn.amount, _parseRemoteDecimals(releaseOrMintIn.sourcePoolData));
+
     // Release to the recipient
-    getToken().safeTransfer(releaseOrMintIn.receiver, releaseOrMintIn.amount);
+    getToken().safeTransfer(releaseOrMintIn.receiver, localAmount);
 
-    emit Released(msg.sender, releaseOrMintIn.receiver, releaseOrMintIn.amount);
+    emit Released(msg.sender, releaseOrMintIn.receiver, localAmount);
 
-    return Pool.ReleaseOrMintOutV1({destinationAmount: releaseOrMintIn.amount});
+    return Pool.ReleaseOrMintOutV1({destinationAmount: localAmount});
   }
 
   /// @inheritdoc IERC165