/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You 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.
 */
package org.apache.geode.management.internal.cli.functions;

import org.apache.logging.log4j.Logger;

import org.apache.geode.SystemFailure;
import org.apache.geode.cache.CacheClosedException;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.DiskStore;
import org.apache.geode.cache.execute.FunctionAdapter;
import org.apache.geode.cache.execute.FunctionContext;
import org.apache.geode.distributed.DistributedMember;
import org.apache.geode.internal.InternalEntity;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.cache.xmlcache.CacheXml;
import org.apache.geode.internal.logging.LogService;
import org.apache.geode.management.internal.configuration.domain.XmlEntity;

/**
 * Function used by the 'destroy disk-store' gfsh command to destroy a disk store on each member.
 * 
 * @since GemFire 8.0
 */

public class DestroyDiskStoreFunction extends FunctionAdapter implements InternalEntity {
  private static final Logger logger = LogService.getLogger();

  private static final long serialVersionUID = 1L;

  @Override
  public void execute(FunctionContext context) {
    // Declared here so that it's available when returning a Throwable
    String memberId = "";

    try {
      final Object[] args = (Object[]) context.getArguments();
      final String diskStoreName = (String) args[0];

      GemFireCacheImpl cache = (GemFireCacheImpl) CacheFactory.getAnyInstance();

      DistributedMember member = cache.getDistributedSystem().getDistributedMember();

      memberId = member.getId();
      // If they set a name use it instead
      if (!member.getName().equals("")) {
        memberId = member.getName();
      }

      DiskStore diskStore = cache.findDiskStore(diskStoreName);

      CliFunctionResult result;
      if (diskStore != null) {
        XmlEntity xmlEntity = new XmlEntity(CacheXml.DISK_STORE, "name", diskStoreName);
        diskStore.destroy();
        result = new CliFunctionResult(memberId, xmlEntity, "Success");
      } else {
        result = new CliFunctionResult(memberId, false, "Disk store not found on this member");
      }
      context.getResultSender().lastResult(result);

    } catch (IllegalStateException isex) {
      CliFunctionResult result = new CliFunctionResult(memberId, false, isex.getMessage());
      context.getResultSender().lastResult(result);

    } catch (CacheClosedException cce) {
      CliFunctionResult result = new CliFunctionResult(memberId, false, null);
      context.getResultSender().lastResult(result);

    } catch (VirtualMachineError e) {
      SystemFailure.initiateFailure(e);
      throw e;

    } catch (Throwable th) {
      SystemFailure.checkFailure();
      logger.error("Could not destroy disk store: {}", th.getMessage(), th);

      CliFunctionResult result = new CliFunctionResult(memberId, th, null);
      context.getResultSender().lastResult(result);
    }
  }

  @Override
  public String getId() {
    return CreateDiskStoreFunction.class.getName();
  }
}