add pause all / unpause all actions

src/gov-action-contracts/pause-all/PauseAllAction.sol

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0
+pragma solidity 0.8.16;
+
+import "../address-registries/interfaces.sol";
+import "../set-outbox/OutboxActionLib.sol";
+import "../sequencer/SequencerActionLib.sol";
+
+/// @notice pause inbox and rollup, remove all outboxes and sequencers
+contract PauseAllAction {
+    IL1AddressRegistry public immutable addressRegistry;
+    address[] sequencersToRemove;
+
+    constructor(IL1AddressRegistry _addressRegistry, address[] memory _sequencersToRemove) {
+        addressRegistry = _addressRegistry;
+        sequencersToRemove = _sequencersToRemove;
+    }
+
+    function perform() external {
+        addressRegistry.inbox().pause();
+        addressRegistry.rollup().pause();
+        OutboxActionLib.bridgeRemoveAllOutboxes(addressRegistry);
+        for (uint256 i = 0; i < sequencersToRemove.length; i++) {
+            SequencerActionLib.removeSequencer(addressRegistry, sequencersToRemove[i]);
+        }
+    }
+}

src/gov-action-contracts/pause-all/UnpauseAllAction.sol

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: Apache-2.0
+pragma solidity 0.8.16;
+
+import "../address-registries/interfaces.sol";
+import "../set-outbox/OutboxActionLib.sol";
+import "../sequencer/SequencerActionLib.sol";
+
+/// @notice unpause inbox and rollup, add outboxes and sequencers (i.e., undoes PauseAllAction)
+contract UnPauseAllAction {
+    IL1AddressRegistry public immutable addressRegistry;
+    address[] sequencersToAdd;
+    address[] outboxesToAdd;
+
+    constructor(
+        IL1AddressRegistry _addressRegistry,
+        address[] memory _sequencersToAdd,
+        address[] memory outboxesToAdd
+    ) {
+        addressRegistry = _addressRegistry;
+        sequencersToAdd = _sequencersToAdd;
+        outboxesToAdd = outboxesToAdd;
+    }
+
+    function perform() external {
+        addressRegistry.inbox().unpause();
+        addressRegistry.rollup().resume();
+        OutboxActionLib.bridgeAddOutboxes(addressRegistry, outboxesToAdd);
+        for (uint256 i = 0; i < sequencersToAdd.length; i++) {
+            SequencerActionLib.addSequencer(addressRegistry, sequencersToAdd[i]);
+        }
+    }
+}

src/gov-action-contracts/set-outbox/OutboxActionLib.sol

@@ -6,9 +6,7 @@ import "@openzeppelin/contracts/utils/Address.sol";
 import "@arbitrum/nitro-contracts/src/bridge/IOutbox.sol";
 
 library OutboxActionLib {
-    function bridgeAddOutboxes(IBridgeGetter addressRegistry, address[] calldata outboxes)
-        internal
-    {
+    function bridgeAddOutboxes(IBridgeGetter addressRegistry, address[] memory outboxes) internal {
         IBridge bridge = addressRegistry.bridge();
         for (uint256 i = 0; i < outboxes.length; i++) {
             address outbox = outboxes[i];
@@ -20,7 +18,7 @@ library OutboxActionLib {
         }
     }
 
-    function bridgeRemoveOutboxes(IBridgeGetter addressRegistry, address[] calldata outboxes)
+    function bridgeRemoveOutboxes(IBridgeGetter addressRegistry, address[] memory outboxes)
         internal
     {
         IBridge bridge = addressRegistry.bridge();