com.gemstone.gemfire.management.internal.cli.converters.ClusterMemberIdNameConverter Maven / Gradle / Ivy

/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.management.internal.cli.converters;

import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;

import com.gemstone.gemfire.management.cli.ConverterHint;
import com.gemstone.gemfire.management.internal.cli.shell.Gfsh;

import org.springframework.shell.core.Completion;
import org.springframework.shell.core.Converter;
import org.springframework.shell.core.MethodTarget;

/**
 *
 * @author Abhishek Chaudhari
 *
 * @since 7.5
 */
public class ClusterMemberIdNameConverter implements Converter {
  @Override
  public boolean supports(Class type, String optionContext) {
    return String.class.equals(type) && ConverterHint.ALL_MEMBER_IDNAME.equals(optionContext);
  }

  @Override
  public String convertFromText(String value, Class targetType,
      String optionContext) {
    return value;
  }

  @Override
  public boolean getAllPossibleValues(List completions,
      Class targetType, String existingData, String optionContext,
      MethodTarget target) {
    if (String.class.equals(targetType) && ConverterHint.ALL_MEMBER_IDNAME.equals(optionContext)) {
      Set memberIdAndNames = getMemberIdAndNames();

      for (String string : memberIdAndNames) {
        completions.add(new Completion(string));
      }
    }

    return !completions.isEmpty();
  }

  private Set getMemberIdAndNames() {
    final Set memberIdsAndNames = new TreeSet();

    final Gfsh gfsh = Gfsh.getCurrentInstance();

    if (gfsh != null && gfsh.isConnectedAndReady()) {
      final String[] memberIds = gfsh.getOperationInvoker().getDistributedSystemMXBean().listMembers();

      if (memberIds != null && memberIds.length != 0) {
        memberIdsAndNames.addAll(Arrays.asList(memberIds));
      }
    }

    return memberIdsAndNames;
  }

}