Converted ObjectMapperFactory to a singleton

src/main/java/com/uid2/shared/Utils.java

@@ -1,7 +1,7 @@
 package com.uid2.shared;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.uid2.shared.utils.ObjectMapperFactory;
+import com.uid2.shared.utils.Mapper;
 import io.vertx.core.json.Json;
 import io.vertx.core.json.JsonArray;
 import io.vertx.core.json.JsonObject;
@@ -24,7 +24,7 @@ public class Utils {
     public static final String OS = System.getProperty("os.name").toLowerCase();
     public static final boolean IsWindows = OS.contains("win");
 
-    private static final ObjectMapper OBJECT_MAPPER = ObjectMapperFactory.build();
+    private static final ObjectMapper OBJECT_MAPPER = Mapper.getInstance();
 
     public static boolean isProductionEnvironment() {
         // detect if it is running in KUBERNETES_SERVICE_HOST

src/main/java/com/uid2/shared/auth/RotatingOperatorKeyProvider.java

@@ -9,7 +9,7 @@
 import com.uid2.shared.store.reader.IMetadataVersionedStore;
 import com.uid2.shared.store.IOperatorKeyProvider;
 import com.uid2.shared.store.scope.StoreScope;
-import com.uid2.shared.utils.ObjectMapperFactory;
+import com.uid2.shared.utils.Mapper;
 import io.vertx.core.json.JsonObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -20,7 +20,7 @@
 
 public class RotatingOperatorKeyProvider implements IOperatorKeyProvider, IMetadataVersionedStore {
     private static final Logger LOGGER = LoggerFactory.getLogger(RotatingOperatorKeyProvider.class);
-    private static final ObjectMapper OBJECT_MAPPER = ObjectMapperFactory.build();
+    private static final ObjectMapper OBJECT_MAPPER = Mapper.getInstance();
 
     private final DownloadCloudStorage metadataStreamProvider;
     private final DownloadCloudStorage contentStreamProvider;

src/main/java/com/uid2/shared/store/parser/ClientParser.java

@@ -2,16 +2,15 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.uid2.shared.auth.ClientKey;
-import com.uid2.shared.utils.ObjectMapperFactory;
+import com.uid2.shared.utils.Mapper;
 
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.List;
 
 public class ClientParser implements Parser<Collection<ClientKey>> {
-    private static final ObjectMapper OBJECT_MAPPER = ObjectMapperFactory.build();
+    private static final ObjectMapper OBJECT_MAPPER = Mapper.getInstance();
 
     @Override
     public ParsingResult<Collection<ClientKey>> deserialize(InputStream inputStream) throws IOException {

src/main/java/com/uid2/shared/utils/Mapper.java

@@ -0,0 +1,18 @@
+package com.uid2.shared.utils;
+
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.MapperFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class Mapper {
+    private static final ObjectMapper INSTANCE = new ObjectMapper()
+            .configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_ENUMS, true)
+            .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);;
+
+    private Mapper() {
+    }
+
+    public static ObjectMapper getInstance() {
+        return INSTANCE;
+    }
+}

src/test/java/com/uid2/shared/auth/ClientKeyTest.java

@@ -2,14 +2,14 @@
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.uid2.shared.utils.ObjectMapperFactory;
+import com.uid2.shared.utils.Mapper;
 import org.junit.Test;
 
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class ClientKeyTest {
-    private static final ObjectMapper OBJECT_MAPPER = ObjectMapperFactory.build();
+    private static final ObjectMapper OBJECT_MAPPER = Mapper.getInstance();
 
     @Test
     public void verifyDisabledPropIsOptional() throws JsonProcessingException {

src/test/java/com/uid2/shared/auth/OperatorKeyTest.java

@@ -2,7 +2,7 @@
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.uid2.shared.utils.ObjectMapperFactory;
+import com.uid2.shared.utils.Mapper;
 import org.junit.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
@@ -15,7 +15,7 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 public class OperatorKeyTest {
-    private static final ObjectMapper OBJECT_MAPPER = ObjectMapperFactory.build();
+    private static final ObjectMapper OBJECT_MAPPER = Mapper.getInstance();
 
     @Test
     public void verifyDisabledPropIsOptional() throws JsonProcessingException {

src/test/java/com/uid2/shared/utils/ObjectMapperFactoryTest.java → src/test/java/com/uid2/shared/utils/MapperTest.java

@@ -9,8 +9,8 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class ObjectMapperFactoryTest {
-    private static final ObjectMapper OBJECT_MAPPER = ObjectMapperFactory.build();
+public class MapperTest {
+    private static final ObjectMapper OBJECT_MAPPER = Mapper.getInstance();
 
     @Test
     public void readValue_whenEnumIsCaseInsensitive() throws Exception {