tasks: Add script to checkpoint all delegators

This is just to register the contract + task I ran to
checkpoint all delegators on the deployed Delta contracts.

Not intended to merge, just have it registered somewhere
in the repository.

contracts/bonding/Checkpointer.sol

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.9;
+
+interface IBondingManager {
+    function checkpointBondingState(address _account) external;
+}
+
+/// @custom:security-contact [email protected]
+contract Checkpointer {
+    IBondingManager public constant BONDING_MANAGER = IBondingManager(0x35Bcf3c30594191d53231E4FF333E8A770453e40); // mainnet
+
+    function checkpointMany(address[] calldata addresses) public {
+        for (uint256 i = 0; i < addresses.length; i++) {
+            BONDING_MANAGER.checkpointBondingState(addresses[i]);
+        }
+    }
+}

tasks/checkpoint-all-delegators.ts

@@ -0,0 +1,75 @@
+import {task} from "hardhat/config"
+import {delegators} from "./delegators"
+import {BondingVotes, Checkpointer} from "../typechain"
+import {Address} from "hardhat-deploy/types"
+import {readFileSync, writeFileSync} from "fs"
+
+task(
+    "checkpoint-all-delegators",
+    "Verifies all contracts in the deployments folder"
+)
+    .addOptionalParam(
+        "skipListFile",
+        "Skip-list files of already processed delegators",
+        "./tasks/delegators-skip.json"
+    )
+    .setAction(async (taskArgs, hre) => {
+        const {skipListFile} = taskArgs
+        const Checkpointer: Checkpointer = await hre.ethers.getContractAt(
+            "Checkpointer",
+            "0xFb260b0957DDe757b6AEc16b62Abf6842C1Ff8fB"
+        )
+        const BondingVotes: BondingVotes = await hre.ethers.getContractAt(
+            "BondingVotes",
+            "0x0B9C254837E72Ebe9Fe04960C43B69782E68169A"
+        )
+
+        const allDelegators = delegators.reduce<Address[]>((acc, q) => {
+            return acc.concat(q.data.delegators.map(d => d.id))
+        }, [])
+
+        const skip: string[] = JSON.parse(readFileSync(skipListFile, "utf8"))
+        const addToSkipList = (...delegators: Address[]) => {
+            skip.push(...delegators)
+            writeFileSync(skipListFile, JSON.stringify(skip, null, 2))
+        }
+
+        let batch = [] as Address[]
+        const checkpointBatch = async () => {
+            console.log(`Checkpointing ${batch.length} delegators`)
+
+            await Checkpointer.checkpointMany(batch, {
+                gasPrice: 100000000
+            }).then(tx => {
+                console.log(`tx: ${tx.hash}`)
+                return tx.wait()
+            })
+
+            addToSkipList(...batch)
+            batch = []
+        }
+
+        for (const delegator of allDelegators) {
+            if (skip.includes(delegator)) {
+                continue
+            }
+
+            const hasCheckpoint = await BondingVotes.hasCheckpoint(delegator)
+            if (hasCheckpoint) {
+                console.log(`Skipping checkpointed ${delegator}`)
+                addToSkipList(delegator)
+                continue
+            }
+
+            batch.push(delegator)
+            if (batch.length % 10 === 0) {
+                console.log(`Batch size: ${batch.length}`)
+            }
+            if (batch.length === 100) {
+                await checkpointBatch()
+            }
+        }
+        if (batch.length > 0) {
+            await checkpointBatch()
+        }
+    })

tasks/delegators-skip.json

@@ -0,0 +1 @@
+[]