org.apache.cassandra.utils.progress.ProgressEventNotifierSupport Maven / Gradle / Ivy
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* 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.utils.progress;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Provides basic, thread safe ProgressEvent notification support
*/
public abstract class ProgressEventNotifierSupport implements ProgressEventNotifier
{
private List listeners = new CopyOnWriteArrayList<>();
@Override
public void addProgressListener(ProgressListener listener)
{
listeners.add(listener);
}
@Override
public void removeProgressListener(ProgressListener listener)
{
listeners.remove(listener);
}
protected void fireProgressEvent(String tag, ProgressEvent event)
{
for (ProgressListener listener : listeners)
{
listener.progress(tag, event);
}
}
}