SystemStatusProvider.java

/* 
 * Licensed under the Apache License, Version 2.0 (the "License");
 *
 * You may not use this file except in compliance with the License.
 *
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributions from 2013-2017 where performed either by US government 
 * employees, or under US Veterans Health Administration contracts. 
 *
 * US Veterans Health Administration contributions by government employees
 * are work of the U.S. Government and are not subject to copyright
 * protection in the United States. Portions contributed by government 
 * employees are USGovWork (17USC §105). Not subject to copyright. 
 * 
 * Contribution by contractors to the US Veterans Health Administration
 * during this period are contractually contributed under the
 * Apache License, Version 2.0.
 *
 * See: https://www.usa.gov/government-works
 * 
 * Contributions prior to 2013:
 *
 * Copyright (C) International Health Terminology Standards Development Organisation.
 * Licensed under the Apache License, Version 2.0.
 *
 */



package sh.isaac.api;

//~--- JDK imports ------------------------------------------------------------

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

//~--- non-JDK imports --------------------------------------------------------

import javafx.util.Pair;

import org.jvnet.hk2.annotations.Service;

//~--- classes ----------------------------------------------------------------

/**
 * The Class SystemStatusProvider.
 */
@Service
public class SystemStatusProvider
         implements SystemStatusService {
   /** The configuration failures. */
   private List<Pair<String, Exception>> configurationFailures = null;

   //~--- constructors --------------------------------------------------------

   /**
    * Instantiates a new system status provider.
    */
   private SystemStatusProvider() {
      // for HK2
   }

   //~--- methods -------------------------------------------------------------

   /**
    * Notify service configuration failure.
    *
    * @param serviceName the service name
    * @param failureDetails the failure details
    * @see sh.isaac.api.SystemStatusService#notifyServiceConfigurationFailure(java.lang.String, java.lang.Exception)
    */
   @Override
   public void notifyServiceConfigurationFailure(String serviceName, Exception failureDetails) {
      if (this.configurationFailures == null) {
         this.configurationFailures = new ArrayList<>();
      }

      this.configurationFailures.add(new Pair<>(serviceName, failureDetails));
   }

   //~--- get methods ---------------------------------------------------------

   /**
    * Gets the service configuration failures.
    *
    * @return the service configuration failures
    * @see sh.isaac.api.SystemStatusService#getServiceConfigurationFailures()
    */
   @Override
   public Optional<List<Pair<String, Exception>>> getServiceConfigurationFailures() {
      return Optional.of(this.configurationFailures);
   }
}