Added an endpoint to get a list of transactions hex by transaction ids

src/Blockcore.Indexer.Core/Controllers/QueryController.cs

@@ -1,7 +1,11 @@
 using System;
+using System.Collections;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Linq;
 using System.Threading.Tasks;
 using Blockcore.Indexer.Core.Paging;
+using Blockcore.Indexer.Core.Settings;
 using Blockcore.Indexer.Core.Storage;
 using Blockcore.Indexer.Core.Storage.Types;
 using Microsoft.AspNetCore.Mvc;
@@ -17,14 +21,16 @@ public class QueryController : Controller
    {
       private readonly IPagingHelper paging;
       private readonly IStorage storage;
+      protected readonly IndexerSettings configuration;
 
       /// <summary>
       /// Initializes a new instance of the <see cref="QueryController"/> class.
       /// </summary>
-      public QueryController(IPagingHelper paging, IStorage storage)
+      public QueryController(IPagingHelper paging, IStorage storage, IndexerSettings configuration)
       {
          this.paging = paging;
          this.storage = storage;
+         this.configuration = configuration;
       }
 
       /// <summary>
@@ -118,6 +124,24 @@ public IActionResult GetTransactionHex(string transactionId)
          return OkItem(storage.GetRawTransaction(transactionId));
       }
 
+      /// <summary>
+      /// Get a list of transactions in hex format based on the transaction IDs (hash).
+      /// </summary>
+      /// <param name="transactionId"></param>
+      /// <returns></returns>
+      [HttpPost]
+      [Route("transactions/hex")]
+      public IActionResult GetTransactionsHex(IEnumerable<string> transactionIds)
+      {
+         if (!configuration.StoreRawTransactions)
+            return Forbid();
+
+         if (transactionIds.Count() > 20)
+            return BadRequest();
+
+         return OkItem(storage.GetRawTransactions(transactionIds));
+      }
+
 
       /// <summary>
       /// Returns blocks based on the offset and limit. The blocks are sorted from from lowest to highest index. You can use the "link" HTTP header to get dynamic paging links.

src/Blockcore.Indexer.Core/Storage/IStorage.cs

@@ -22,6 +22,8 @@ public interface IStorage
 
       string GetRawTransaction(string transactionId);
 
+      IEnumerable<string> GetRawTransactions(IEnumerable<string> transactionId);
+
       QueryTransaction GetTransaction(string transactionId);
 
       QueryResult<SyncTransactionInfo> TransactionsByBlock(string hash, int offset, int limit);

src/Blockcore.Indexer.Core/Storage/Mongo/MongoData.cs

@@ -370,6 +370,18 @@ public string GetRawTransaction(string transactionId)
          return null;
       }
 
+      public IEnumerable<string> GetRawTransactions(IEnumerable<string> transactionId)
+      {
+         FilterDefinition<TransactionTable> filter = Builders<TransactionTable>.Filter.In(info => info.TransactionId, transactionId);
+
+         var transactions = mongoDb.TransactionTable.Find(filter)
+            .ToList();
+
+         return transactions.Any()
+            ? transactions.Select(t => Encoders.Hex.EncodeData(t.RawTransaction))
+            : null;
+      }
+
       public string GetRawBlock(string blockHash)
       {
          IBlockchainClient client = clientFactory.Create(syncConnection);