Copyright 2014 Netflix, Inc.
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.
/**
 * Copyright 2014 Netflix, Inc.
 *
 * 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 com.netflix.config;

import java.util.Map;

The definition of configuration source that brings dynamic changes to the configuration via watchers.
Author:
cfregly/**
 * The definition of configuration source that brings dynamic changes to the configuration via watchers.
 * 
 * @author cfregly
 */
public interface WatchedConfigurationSource {
    
Add WatchedUpdateListener listener 
Params:
l – /**
     * Add {@link WatchedUpdateListener} listener
     * 
     * @param l
     */
    public void addUpdateListener(WatchedUpdateListener l);

    
Remove WatchedUpdateListener listener 
Params:
l – /**
     * Remove {@link WatchedUpdateListener} listener
     * 
     * @param l
     */
    public void removeUpdateListener(WatchedUpdateListener l);

    
Get a snapshot of the latest configuration data.

Note: The correctness of this data is only as good as the underlying config source's view of the data.
/**
     * Get a snapshot of the latest configuration data.<BR>
     * 
     * Note: The correctness of this data is only as good as the underlying config source's view of the data.
     */
    public Map<String, Object> getCurrentData() throws Exception;
}