Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

testing-modules/groovy-spock/src/main/java/mocks/ItemService.java

@@ -0,0 +1,37 @@
+package mocks;
+
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class ItemService {
+    private final ItemProvider itemProvider;
+    private final EventPublisher eventPublisher;
+
+
+    public ItemService(ItemProvider itemProvider, EventPublisher eventPublisher) {
+        this.itemProvider = itemProvider;
+        this.eventPublisher = eventPublisher;
+    }
+
+    List<Item> getAllItemsSortedByName(List<String> itemIds) {
+        List<Item> items;
+        try{
+            items = itemProvider.getItems(itemIds);
+        } catch (RuntimeException ex) {
+            throw new ExternalItemProviderException();
+        }
+        return items.stream()
+                .sorted(Comparator.comparing(Item::getName))
+                .collect(Collectors.toList());
+    }
+
+    void saveItems(List<String> itemIds) {
+        List<String> notEmptyOfferIds = itemIds.stream()
+                .filter(itemId -> !itemId.isEmpty())
+                .collect(Collectors.toList());
+        // save in database
+        notEmptyOfferIds.forEach(eventPublisher::publish);
+    }
+
+}