server: Add getRawTransaction method to XSNService

server/app/com/xsn/explorer/services/XSNService.scala

@@ -20,6 +20,8 @@ trait XSNService {
 
   def getTransaction(txid: TransactionId): FutureApplicationResult[rpc.Transaction]
 
+  def getRawTransaction(txid: TransactionId): FutureApplicationResult[JsValue]
+
   def getAddressBalance(address: Address): FutureApplicationResult[rpc.AddressBalance]
 
   def getTransactions(address: Address): FutureApplicationResult[List[TransactionId]]
@@ -68,6 +70,22 @@ class XSNServiceRPCImpl @Inject() (
         }
   }
 
+  override def getRawTransaction(txid: TransactionId): FutureApplicationResult[JsValue] = {
+    val errorCodeMapper = Map(-5 -> TransactionNotFoundError)
+
+    server
+        .post(s"""{ "jsonrpc": "1.0", "method": "getrawtransaction", "params": ["${txid.string}", 1] }""")
+        .map { response =>
+
+          val maybe = getResult[JsValue](response, errorCodeMapper)
+          maybe.getOrElse {
+            logger.warn(s"Unexpected response from XSN Server, txid = ${txid.string}, status = ${response.status}, response = ${response.body}")
+
+            Bad(XSNUnexpectedResponseError).accumulating
+          }
+        }
+  }
+
   override def getAddressBalance(address: Address): FutureApplicationResult[rpc.AddressBalance] = {
     val body = s"""
          |{

server/test/com/xsn/explorer/helpers/DummyXSNService.scala

@@ -4,10 +4,12 @@ import com.alexitc.playsonify.core.FutureApplicationResult
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.rpc.Masternode
 import com.xsn.explorer.services.XSNService
+import play.api.libs.json.JsValue
 
 class DummyXSNService extends XSNService {
 
   override def getTransaction(txid: TransactionId): FutureApplicationResult[rpc.Transaction] = ???
+  override def getRawTransaction(txid: TransactionId): FutureApplicationResult[JsValue] = ???
   override def getAddressBalance(address: Address): FutureApplicationResult[rpc.AddressBalance] = ???
   override def getTransactions(address: Address): FutureApplicationResult[List[TransactionId]] = ???
   override def getBlock(blockhash: Blockhash): FutureApplicationResult[rpc.Block] = ???

server/test/com/xsn/explorer/services/XSNServiceRPCImplSpec.scala

@@ -157,6 +157,24 @@ class XSNServiceRPCImplSpec extends WordSpec with MustMatchers with ScalaFutures
     }
   }
 
+  "getRawTransaction" should {
+    "retrieve the raw transaction" in {
+      val txid = createTransactionId("024aba1d535cfe5dd3ea465d46a828a57b00e1df012d7a2d158e0f7484173f7c")
+      val expected = TransactionLoader.json(txid.string)
+
+      val responseBody = createRPCSuccessfulResponse(TransactionLoader.json(txid.string))
+      val json = Json.parse(responseBody)
+
+      when(response.status).thenReturn(200)
+      when(response.json).thenReturn(json)
+      when(request.post[String](anyString())(any())).thenReturn(Future.successful(response))
+
+      whenReady(service.getRawTransaction(txid)) { result =>
+        result mustEqual Good(expected)
+      }
+    }
+  }
+
   "getAddressBalance" should {
     "return the balance" in {
       val responseBody =