feat: update wd-mon to work for OptimismPortal2 (#9334)

.changeset/dry-bobcats-obey.md

+---
+'@eth-optimism/common-ts': patch
+---
+
+Adds a new validator for address types.

.changeset/ninety-pugs-clap.md

+---
+'@eth-optimism/chain-mon': minor
+---
+
+Updates wd-mon inside chain-mon to support FPAC.

packages/chain-mon/src/wd-mon/constants.ts

+import { L2ChainID } from '@eth-optimism/sdk'
+
+// TODO: Consider moving to `@eth-optimism/constants` and generating from superchain registry.
+// @see https://github.com/ethereum-optimism/optimism/pull/9041
+
+/**
+ * Mapping of L2ChainIDs to the L1 block numbers where the wd-mon service should start looking for
+ * withdrawals by default. L1 block numbers here are based on the block number in which the
+ * OptimismPortal proxy contract was deployed to L1.
+ */
+export const DEFAULT_STARTING_BLOCK_NUMBERS: {
+  [ChainID in L2ChainID]?: number
+} = {
+  [L2ChainID.OPTIMISM]: 17365802 as const,
+  [L2ChainID.OPTIMISM_GOERLI]: 8299684 as const,
+  [L2ChainID.OPTIMISM_SEPOLIA]: 4071248 as const,
+  [L2ChainID.BASE_MAINNET]: 17482143 as const,
+  [L2ChainID.BASE_GOERLI]: 8411116 as const,
+  [L2ChainID.BASE_SEPOLIA]: 4370901 as const,
+  [L2ChainID.ZORA_MAINNET]: 17473938 as const,
+}

packages/chain-mon/src/wd-mon/helpers.ts

-import { Provider } from '@ethersproject/abstract-provider'
-import { Logger } from '@eth-optimism/common-ts'
-
-/**
- * Finds
- *
- * @param
- * @param
- * @param
- * @returns
- */
-export const getLastFinalizedBlock = async (
-  l1RpcProvider: Provider,
-  faultProofWindow: number,
-  logger: Logger
-): Promise<number> => {
-  let guessWindowStartBlock
-  try {
-    const l1Block = await l1RpcProvider.getBlock('latest')
-
-    // The time corresponding to the start of the FPW, based on the current block.
-    const windowStartTime = l1Block.timestamp - faultProofWindow
-
-    // Use the FPW to find the block number that is the start of the FPW.
-    guessWindowStartBlock = l1Block.number - faultProofWindow / 12
-
-    let block = await l1RpcProvider.getBlock(guessWindowStartBlock)
-    while (block.timestamp > windowStartTime) {
-      guessWindowStartBlock--
-      block = await l1RpcProvider.getBlock(guessWindowStartBlock)
-    }
-    return block.number
-  } catch (err) {
-    logger.fatal('error when calling querying for block', {
-      errors: err,
-    })
-    throw new Error(
-      `unable to find block number ${guessWindowStartBlock || 'latest'}`
-    )
-  }
-}

packages/common-ts/src/base-service/validators.ts

@@ -49,6 +49,14 @@ const logLevel = makeValidator<LogLevel>((input) => {
   }
 })
 
+const address = makeValidator<string>((input) => {
+  if (!ethers.utils.isHexString(input, 20)) {
+    throw new Error(`expected input to be an address: ${input}`)
+  } else {
+    return input as `0x${string}`
+  }
+})
+
 export const validators = {
   str,
   bool,
@@ -63,4 +71,5 @@ export const validators = {
   jsonRpcProvider,
   staticJsonRpcProvider,
   logLevel,
+  address,
 }