DefaultMediaFileSystem.java
/*
* *********************************************************************************************************************
*
* blueMarine II: Semantic Media Centre
* http://tidalwave.it/projects/bluemarine2
*
* Copyright (C) 2015 - 2021 by Tidalwave s.a.s. (http://tidalwave.it)
*
* *********************************************************************************************************************
*
* 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.
*
* *********************************************************************************************************************
*
* git clone https://bitbucket.org/tidalwave/bluemarine2-src
* git clone https://github.com/tidalwave-it/bluemarine2-src
*
* *********************************************************************************************************************
*/
package it.tidalwave.bluemarine2.model.impl;
import javax.annotation.Nonnull;
import java.util.concurrent.CountDownLatch;
import java.nio.file.Path;
import it.tidalwave.util.NotFoundException;
import it.tidalwave.util.annotation.VisibleForTesting;
import it.tidalwave.util.spi.PriorityAsSupport;
import it.tidalwave.messagebus.annotation.ListensTo;
import it.tidalwave.messagebus.annotation.SimpleMessageSubscriber;
import it.tidalwave.bluemarine2.message.PowerOnNotification;
import it.tidalwave.bluemarine2.model.MediaFileSystem;
import it.tidalwave.bluemarine2.model.MediaFolder;
import it.tidalwave.bluemarine2.model.ModelPropertyNames;
import lombok.experimental.Delegate;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;
import static java.util.concurrent.TimeUnit.SECONDS;
/***********************************************************************************************************************
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
@SimpleMessageSubscriber @Slf4j
public class DefaultMediaFileSystem implements MediaFileSystem
{
private final CountDownLatch initialized = new CountDownLatch(1);
@Getter
private Path rootPath;
@Delegate
private final PriorityAsSupport asSupport = new PriorityAsSupport(this);
/*******************************************************************************************************************
*
*
******************************************************************************************************************/
@Override @Nonnull
public MediaFolder getRoot()
{
waitForPowerOn();
return new FileSystemMediaFolder(rootPath, null, rootPath);
}
/*******************************************************************************************************************
*
*
******************************************************************************************************************/
@VisibleForTesting public void onPowerOnNotification (@ListensTo @Nonnull final PowerOnNotification notification)
throws NotFoundException
{
log.info("onPowerOnNotification({})", notification);
rootPath = notification.getProperties().get(ModelPropertyNames.ROOT_PATH).resolve("Music");
log.info(">>>> rootPath: {}", rootPath);
initialized.countDown();
}
/*******************************************************************************************************************
*
*
******************************************************************************************************************/
private void waitForPowerOn()
{
try
{
if (!initialized.await(10, SECONDS))
{
throw new IllegalStateException("rooPath null: did not receive PowerOnNotification");
}
}
catch (InterruptedException ex)
{
throw new IllegalStateException("Interrupted while waiting for PowerOnNotification");
}
}
}