/*
 *
 * Copyright (c) 2006 The Apache Software Foundation
 *
 * 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.
 *
 */
package org.apache.qpid.server.cluster;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ClusterCapability
{
    public static final String PATTERN = ".*\\bcluster_peer=(\\S*:\\d*)\b*.*";
    public static final String PEER = "cluster_peer";

    public static String add(String original, MemberHandle identity)
    {
        return original == null ? peer(identity) : original + " " + peer(identity);
    }

    private static String peer(MemberHandle identity)
    {
        return PEER + "=" + identity.getDetails();
    }

    public static boolean contains(String in)
    {
        return in != null && in.contains(in);
    }

    public static MemberHandle getPeer(String in)
    {
        Matcher matcher = Pattern.compile(PATTERN).matcher(in);
        if (matcher.matches())
        {
            return new SimpleMemberHandle(matcher.group(1));
        }
        else
        {
            throw new RuntimeException("Could not find peer in '" + in + "'");
        }
    }
}
