change caching map to concurrent one

gc-obm-gs/src/main/java/org/opengroup/osdu/core/obm/drivers/gs/GcsPropertyObmDestinationResolver.java

@@ -20,9 +20,9 @@ package org.opengroup.osdu.core.obm.drivers.gs;
 import static org.springframework.beans.factory.config.BeanDefinition.SCOPE_SINGLETON;
 
 import com.google.cloud.storage.Storage;
-import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
+import java.util.concurrent.ConcurrentHashMap;
 import javax.annotation.PreDestroy;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -41,7 +41,7 @@ import org.springframework.stereotype.Component;
 @Slf4j
 public class GcsPropertyObmDestinationResolver implements GcsObmDestinationResolver {
 
-  private final Map<ObmDestination, Storage> storageCache = new HashMap<>();
+  private final Map<ObmDestination, Storage> storageCache = new ConcurrentHashMap<>();
   private final GcObmConfigurationProperties configurationProperties;
   private final GoogleStorageClientSupplier storageClientBuilder;
 

gc-obm-gs/src/main/java/org/opengroup/osdu/core/obm/drivers/gs/GcsTenantObmDestinationResolver.java

@@ -20,9 +20,9 @@ package org.opengroup.osdu.core.obm.drivers.gs;
 import static org.springframework.beans.factory.config.BeanDefinition.SCOPE_SINGLETON;
 
 import com.google.cloud.storage.Storage;
-import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
+import java.util.concurrent.ConcurrentHashMap;
 import javax.annotation.PreDestroy;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -45,7 +45,7 @@ import org.springframework.stereotype.Component;
 @Slf4j
 public class GcsTenantObmDestinationResolver implements GcsObmDestinationResolver {
 
-  private final Map<ObmDestination, Storage> storageCache = new HashMap<>();
+  private final Map<ObmDestination, Storage> storageCache = new ConcurrentHashMap<>();
   private final ITenantFactory tenantInfoFactory;
   private final GoogleStorageClientSupplier storageClientBuilder;