Remove transactions that cant be decoded

packages/node/CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Filter out transactions that can't be decoded (#280)
 
 ## [4.1.0] - 2024-08-12
 ### Added

packages/node/src/utils/cosmos.spec.ts

@@ -21,7 +21,12 @@ import {
 import { fromInt } from 'long';
 import { CosmosClient } from '../indexer/api.service';
 import { BlockContent } from '../indexer/types';
-import { fetchBlocksBatches, filterMessageData, wrapEvent } from './cosmos';
+import {
+  fetchBlocksBatches,
+  filterMessageData,
+  filterMessages,
+  wrapEvent,
+} from './cosmos';
 
 const ENDPOINT = 'https://rpc.mainnet.archway.io';
 
@@ -400,4 +405,22 @@ describe('Cosmos 0.50 support', () => {
 
     expect(event.log.events.length).toEqual(0);
   });
+
+  // block.tx when block.block.tx cannot be decoded
+  // {
+  //    code: 2,
+  //    codespace: 'sdk',
+  //    log: 'tx parse error',
+  //    data: undefined,
+  //    events: [],
+  //    gasWanted: 0n,
+  //    gasUsed: 0n
+  //  }
+
+  it('doesnt throw when a block contains ExtendedCommitInfo in the transactions', async () => {
+    const [firstBlock] = await fetchBlocksBatches(api, [13_379_322]); // https://www.mintscan.io/neutron/block/13379322
+    const block = firstBlock.block;
+
+    expect(block.messages.length).toEqual(4);
+  });
 });

packages/node/src/utils/cosmos.ts

@@ -262,16 +262,30 @@ export function wrapTx(
   block: CosmosBlock,
   txResults: TxData[],
 ): CosmosTransaction[] {
-  return txResults.map((tx, idx) => ({
-    idx,
-    block: block,
-    tx,
-    hash: toHex(sha256(block.block.txs[idx])).toUpperCase(),
-    get decodedTx() {
-      delete (this as any).decodedTx;
-      return ((this.decodedTx as any) = decodeTxRaw(block.block.txs[idx]));
-    },
-  }));
+  return (
+    txResults
+      .map((tx, idx) => ({
+        idx,
+        block: block,
+        tx,
+        hash: toHex(sha256(block.block.txs[idx])).toUpperCase(),
+        get decodedTx() {
+          delete (this as any).decodedTx;
+          try {
+            return ((this.decodedTx as any) = decodeTxRaw(
+              block.block.txs[idx],
+            ));
+          } catch (e) {
+            throw new Error(
+              `Failed to decode transaction idx="${idx}" at height="${block.block.header.height}"`,
+              { cause: e },
+            );
+          }
+        },
+      }))
+      // Somtimes there might be other data types in the transactions, ExtendedCommitInfo, we filter them out here so that `decodedTx` doesn't fail
+      .filter((tx) => tx.tx.log !== 'tx parse error')
+  );
 }
 
 export function wrapCosmosMsg(