Add error handling for failed processing. Currently it sends warning.

build.gradle

@@ -33,7 +33,7 @@ ext {
 dependencies {
     implementation 'ch.memobase:memobase-kafka-utils:0.2.3'
     implementation 'org.memobase:memobase-service-utilities:2.0.5'
-    implementation 'ch.memobase:mapper-service-configuration:1.0.5'
+    implementation 'ch.memobase:mapper-service-configuration:1.0.7'
     // Logging Framework
     implementation "org.apache.logging.log4j:log4j-api:${log4jV}"
     implementation "org.apache.logging.log4j:log4j-core:${log4jV}"

src/main/kotlin/KafkaTopology.kt

@@ -19,13 +19,13 @@
 package org.memobase
 
 import ch.memobase.builder.ResourceBuilder
+import ch.memobase.exceptions.InvalidMappingException
 import ch.memobase.kafka.utils.ConfigJoiner
 import ch.memobase.kafka.utils.models.ImportService
 import ch.memobase.kafka.utils.models.JoinedValues
 import ch.memobase.kafka.utils.models.ValueWithException
 import ch.memobase.mapping.MapperConfiguration
 import ch.memobase.mapping.MappingConfigurationParser
-import ch.memobase.exceptions.InvalidMappingException
 import ch.memobase.reporting.Report
 import ch.memobase.reporting.ReportStatus
 import ch.memobase.settings.HeaderExtractionTransformSupplier
@@ -173,7 +173,14 @@ class KafkaTopology(
         val noRecordId = hasRecordId[1]
 
         noRecordId
-            .mapValues { key, value -> Report(key, ReportStatus.fatal, value.errorMessage, Service.step).toJson() }
+            .mapValues { key, value ->
+                Report(
+                    key,
+                    ReportStatus.fatal,
+                    value.errorMessages.joinToString("\n"),
+                    Service.step
+                ).toJson()
+            }
             .to(reportTopic)
 
         return hasRecordId[0]
@@ -194,7 +201,7 @@ class KafkaTopology(
                 Report(
                     key,
                     ReportStatus.fatal,
-                    value.errorMessage,
+                    value.errorMessages.joinToString("\n"),
                     Service.step
                 ).toJson()
             }
@@ -205,13 +212,24 @@ class KafkaTopology(
 
     private fun writeRecord(builder: ResourceBuilder): KeyValue<String, Pair<String, Report>> {
         val result = builder.writeRecord(RDFFormat.NTRIPLES_UTF8)
-        return KeyValue(
-            result.first,
-            Pair(
-                result.second,
-                Report(result.first, ReportStatus.success, "", Service.step)
+
+        if (result.third.isEmpty()) {
+            return KeyValue(
+                result.first,
+                Pair(
+                    result.second,
+                    Report(result.first, ReportStatus.success, "", Service.step)
+                )
             )
-        )
+        } else {
+            return KeyValue(
+                result.first,
+                Pair(
+                    result.second,
+                    Report(result.first, ReportStatus.warning, result.third.joinToString("\n"), Service.step)
+                )
+            )
+        }
     }
 
     private fun parseConfig(data: ByteArray): ByteArray {