/*
 * 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.cassandra.distributed.impl;

import ch.qos.logback.core.PropertyDefinerBase;
import org.apache.cassandra.concurrent.NamedThreadFactory;

/**
 * Used by logback to find/define property value, see logback-dtest.xml
 */
public class InstanceIDDefiner extends PropertyDefinerBase
{
    // Instantiated per classloader, set by Instance
    private static volatile String INSTANCE_ID = "<main>";

    public static void setInstanceId(int id)
    {
        INSTANCE_ID = "node" + id;
        NamedThreadFactory.setGlobalPrefix("node" + id + "_");
    }

    public static String getInstanceId()
    {
        return INSTANCE_ID;
    }

    public String getPropertyValue()
    {
        return INSTANCE_ID;
    }
}
