Fix sftp client issues

src/main/kotlin/KafkaTopology.kt

@@ -79,7 +79,11 @@ class KafkaTopology(private val settings: SettingsLoader) {
 
         val transformedValue = errorFilter[1]
             .mapValues { value -> sftpClient.open(File(value.path)) }
-            .map { key, value -> xmlTransformer.applyXSLT(key, value) }
+            .map { key, value ->
+                value.use {
+                    xmlTransformer.applyXSLT(key, value.RemoteFileInputStream())
+                }
+            }
 
         streamOutput(transformedValue)
 

src/main/kotlin/XMLTransformer.kt

@@ -17,7 +17,6 @@
  */
 package org.memobase
 
-import net.schmizz.sshj.sftp.RemoteFile
 import net.sf.saxon.s9api.Processor
 import net.sf.saxon.s9api.SAXDestination
 import net.sf.saxon.s9api.StaticError
@@ -60,14 +59,12 @@ class XMLTransformer(appSettings: Properties) {
         }
     }
 
-    fun applyXSLT(key: String, data: RemoteFile): KeyValue<String, SAXContentHandler> {
+    fun applyXSLT(key: String, data: InputStream): KeyValue<String, SAXContentHandler> {
         val contentHandler = SAXContentHandler(key, identifierFieldName, recordTag)
-        data.use { file ->
-            file.RemoteFileInputStream().use {
-                transformer.setSource(StreamSource(it))
-                transformer.destination = SAXDestination(contentHandler)
-                transformer.transform()
-            }
+        data.use { stream ->
+            transformer.setSource(StreamSource(stream))
+            transformer.destination = SAXDestination(contentHandler)
+            transformer.transform()
         }
         if (contentHandler.identifier.isEmpty()) {
             throw Exception("No valid identifier found in record $key in field $identifierFieldName.")