com.diozero.internal.DeviceStates Maven / Gradle / Ivy
package com.diozero.internal;
/*
* #%L
* Organisation: diozero
* Project: Device I/O Zero - Core
* Filename: DeviceStates.java
*
* This file is part of the diozero project. More information about this project
* can be found at http://www.diozero.com/
* %%
* Copyright (C) 2016 - 2020 diozero
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.tinylog.Logger;
import com.diozero.internal.provider.DeviceInterface;
public class DeviceStates {
private Map devices;
public DeviceStates() {
devices = new ConcurrentHashMap<>();
}
public boolean isOpened(String key) {
return devices.containsKey(key);
}
public void opened(DeviceInterface device) {
devices.put(device.getKey(), device);
}
public void closed(DeviceInterface device) {
Logger.trace("closed({})", device.getKey());
if (devices.remove(device.getKey()) == null) {
Logger.warn("Request to close unknown device with key '{}'", device.getKey());
}
}
public void closeAll() {
Logger.trace("closeAll()");
// No need to remove from the Map as close() should always call closed()
devices.values().forEach(DeviceInterface::close);
}
public DeviceInterface getDevice(String key) {
return devices.get(key);
}
public int size() {
return devices.size();
}
}