Truncate and format bytes as 0x123456789abc

ChainSafe · Oct 2, 2023 · 0fa1682 · 0fa1682
1 parent d40f1cd
commit 0fa1682
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Showing 2 changed files with 14 additions and 4 deletions.
diff --git a/packages/utils/src/format.ts b/packages/utils/src/format.ts
@@ -17,3 +17,13 @@ export function prettyBytesShort(root: Uint8Array | string): string {
   const str = typeof root === "string" ? root : toHexString(root);
   return `${str.slice(0, 6)}…`;
 }
+
+/**
+ * Truncate and format bytes as `0x123456789abc`
+ * 6 bytes is sufficient to avoid collisions and it allows to easily look up
+ * values on explorers like beaconcha.in while improving readability of logs
+ */
+export function truncBytes(root: Uint8Array | string): string {
+  const str = typeof root === "string" ? root : toHexString(root);
+  return str.slice(0, 14);
+}
diff --git a/packages/validator/src/services/doppelgangerService.ts b/packages/validator/src/services/doppelgangerService.ts
@@ -1,7 +1,7 @@
 import {fromHexString} from "@chainsafe/ssz";
 import {Epoch, ValidatorIndex} from "@lodestar/types";
 import {Api, ApiError, routes} from "@lodestar/api";
-import {Logger, prettyBytes, sleep} from "@lodestar/utils";
+import {Logger, sleep, truncBytes} from "@lodestar/utils";
 import {computeStartSlotAtEpoch} from "@lodestar/state-transition";
 import {ISlashingProtection} from "../slashingProtection/index.js";
 import {ProcessShutdownCallback, PubkeyHex} from "../types.js";
@@ -76,19 +76,19 @@ export class DoppelgangerService {
       if (attestedInPreviousEpoch) {
         remainingEpochs = REMAINING_EPOCHS_IF_SKIPPED;
         this.logger.info("Doppelganger detection skipped, attestation from previous epoch exists in database", {
-          pubkey: prettyBytes(pubkeyHex),
+          pubkey: truncBytes(pubkeyHex),
           previousEpoch,
         });
       } else {
         this.logger.info("Registered validator for doppelganger detection", {
-          pubkey: prettyBytes(pubkeyHex),
+          pubkey: truncBytes(pubkeyHex),
           remainingEpochs,
           nextEpochToCheck,
         });
       }
     } else {
       this.logger.info("Doppelganger detection skipped, validator initialized before genesis", {
-        pubkey: prettyBytes(pubkeyHex),
+        pubkey: truncBytes(pubkeyHex),
         currentEpoch,
       });
     }