Resolve "Sharing Plattform: Prüfung: Gitlab Login für Simon in Produktion funktioniert nicht zuverlässig."

Related to #501 (closed)

src/main/java/at/ac/uibk/gitsearch/repository/search/ElasticSearchRepository.java

@@ -2,6 +2,7 @@ package at.ac.uibk.gitsearch.repository.search;
 
 import at.ac.uibk.gitsearch.service.StatisticsService;
 import at.ac.uibk.gitsearch.service.dto.StatisticsDTO;
+
 import co.elastic.clients.elasticsearch.ElasticsearchClient;
 import co.elastic.clients.elasticsearch._types.ElasticsearchException;
 import co.elastic.clients.elasticsearch._types.query_dsl.FieldAndFormat;
@@ -22,17 +23,21 @@ import co.elastic.clients.elasticsearch.indices.DeleteAliasRequest;
 import co.elastic.clients.elasticsearch.indices.DeleteAliasResponse;
 import co.elastic.clients.elasticsearch.indices.DeleteIndexResponse;
 import co.elastic.clients.elasticsearch.indices.update_aliases.AddAction;
+
 import java.io.IOException;
 import java.io.InputStream;
+import java.text.ParseException;
 import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
+
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.codeability.sharing.plugins.api.search.SearchResultDTO;
 import org.codeability.sharing.plugins.api.search.SearchStatisticsDTO;
+import org.codeability.sharing.plugins.api.search.util.ExerciseId;
 import org.springframework.context.ApplicationContext;
 import org.springframework.stereotype.Repository;
 
@@ -71,8 +76,17 @@ public class ElasticSearchRepository {
    * @throws IOException
    */
   public String index(final SearchResultDTO document, String index) throws IOException {
-    this.elasticsearchAPIClient.index(i -> i.index(index).id(document.getExerciseId()).document(document));
-    return document.getExerciseId();
+    this.elasticsearchAPIClient.index(i -> {
+        final String exerciseId = document.getExerciseId();
+        return i.index(index).id(exerciseId).document(document);
+    });
+    final String exerciseId2 = document.getExerciseId();
+    try {
+        ExerciseId parsedId = ExerciseId.fromString(exerciseId2);
+    } catch (ParseException e) {
+        LOGGER.error("Somehow we got an corrupt exerciseId {}", exerciseId2, e);
+    }
+    return exerciseId2;
   }
 
   public void waitForIndexingFinished() throws IOException {