Fix message and log error

Author: Lucas Martins

api/src/main/java/org/apache/cloudstack/config/ApiServiceConfiguration.java

@@ -19,8 +19,11 @@
 import org.apache.cloudstack.framework.config.ConfigKey;
 import org.apache.cloudstack.framework.config.Configurable;
 import com.cloud.exception.InvalidParameterValueException;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.log4j.Logger;
 
 public class ApiServiceConfiguration implements Configurable {
+    protected static Logger LOGGER = Logger.getLogger(ApiServiceConfiguration.class);
     public static final ConfigKey<String> ManagementServerAddresses = new ConfigKey<>(String.class, "host", "Advanced", "localhost", "The ip address of management server. This can also accept comma separated addresses.", true, ConfigKey.Scope.Global, null, null, null, null, null, ConfigKey.Kind.CSV, null);
     public static final ConfigKey<String> ApiServletPath = new ConfigKey<String>("Advanced", String.class, "endpoint.url", "http://localhost:8080/client/api",
             "API end point. Can be used by CS components/services deployed remotely, for sending CS API requests", true);
@@ -34,8 +37,9 @@ public class ApiServiceConfiguration implements Configurable {
 
     public static void validateEndpointUrl() {
         String csUrl = getApiServletPathValue();
-        if (csUrl == null || csUrl.contains("localhost")) {
-            throw new InvalidParameterValueException(String.format("Global setting %s cannot be null or localhost", ApiServletPath.key()));
+        if (StringUtils.isBlank(csUrl) || csUrl.contains("localhost") || csUrl.contains("127.0.0.1")) {
+            LOGGER.error(String.format("Global setting %s cannot contain localhost or be blank. Current value: %s", ApiServletPath.key(), csUrl));
+            throw new InvalidParameterValueException("Unable to complete this operation. Contact your cloud admin.");
         }
     }