feat: support customized block hash for balance API

.codeflow.yml

@@ -0,0 +1,7 @@
+---
+secure:
+  required_reviews: 1
+  requires_mfa: true
+operate:
+  slack_channels:
+    - "#crypto-deploys"

.github/workflows/ci.yml

@@ -18,6 +18,16 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
+    - name: Install Docker Compose via Package Manager
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y docker-compose
+      shell: bash
+
+    - name: Verify Docker Compose Installation
+      run: docker-compose --version
+      shell: bash
+
     - name: Start a private ethereum network
       uses: ./.github/actions/geth
       id: geth

services/account_service.go

@@ -16,6 +16,7 @@ package services
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/coinbase/rosetta-geth-sdk/configuration"
 	AssetTypes "github.com/coinbase/rosetta-geth-sdk/types"
@@ -70,6 +71,12 @@ func (s *AccountAPIService) AccountBalance(
 		return nil, AssetTypes.WrapErr(AssetTypes.ErrGeth, err)
 	}
 
+	// get block hash if the block hash can't be calculated from keccak256 hash of its RLP encoding
+	balanceResponse.BlockIdentifier.Hash, err = s.client.GetBlockHash(ctx, *balanceResponse.BlockIdentifier)
+	if err != nil {
+		return nil, AssetTypes.WrapErr(AssetTypes.ErrInternalError, fmt.Errorf("could not get block hash given block identifier %v: %w", request.BlockIdentifier, err))
+	}
+
 	return balanceResponse, nil
 }
 

services/block_service.go

@@ -83,7 +83,7 @@ func (s *BlockAPIService) populateTransactions(
 		}
 		transaction, err := s.PopulateTransaction(ctx, tx)
 		if err != nil {
-			return nil, fmt.Errorf("cannot parse %s: %w", tx.Transaction.Hash().Hex(), err)
+			return nil, fmt.Errorf("cannot parse %s: %w", tx.TxHash, err)
 		}
 		transactions = append(transactions, transaction)
 	}