chore: Truncate Logs

eclipse-kuksa · Oct 19, 2023 · ab154ad · ab154ad
1 parent 5369dfa
commit ab154ad
Showing 1 changed file with 21 additions and 1 deletion.
diff --git a/app/src/main/kotlin/org/eclipse/kuksa/testapp/databroker/viewmodel/OutputViewModel.kt b/app/src/main/kotlin/org/eclipse/kuksa/testapp/databroker/viewmodel/OutputViewModel.kt
@@ -42,16 +42,32 @@ class OutputViewModel : ViewModel() {
     fun appendOutput(text: String) {
         viewModelScope.launch {
             withContext(Dispatchers.Main) {
+                val sanitizedText = sanitizeString(text)
+
                 val emptyLines = if (logEntries.isEmpty()) "\n" else "\n\n"
                 val dateFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss:SSS")
                 val date = LocalDateTime.now().format(dateFormatter)
-                logEntries += "$emptyLines- $date\n $text"
+                logEntries += "$emptyLines- $date\n $sanitizedText"
 
                 output = logEntries.toList()
             }
         }
     }
 
+    // fixes a crash when outputting VssPath(Vehicle). The ScrollBar can't handle input with more than 3971 line breaks
+    private fun sanitizeString(text: String): String {
+        var sanitizedText = text
+        val isTextTooLong = sanitizedText.length >= MAX_LENGTH_LOG_ENTRY
+        if (isTextTooLong) {
+            sanitizedText = sanitizedText.substring(0, MAX_LENGTH_LOG_ENTRY) + "…"
+            sanitizedText += System.lineSeparator()
+            sanitizedText += System.lineSeparator()
+            sanitizedText += "Text is too long and was truncated"
+        }
+
+        return sanitizedText
+    }
+
     fun clear() {
         viewModelScope.launch {
             withContext(Dispatchers.Main) {
@@ -61,4 +77,8 @@ class OutputViewModel : ViewModel() {
             }
         }
     }
+
+    private companion object {
+        private const val MAX_LENGTH_LOG_ENTRY = 90_000
+    }
 }