com.freedomotic.bus.BootStatus Maven / Gradle / Ivy

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/**
 *
 * Copyright (c) 2009-2014 Freedomotic team
 * http://freedomotic.com
 *
 * This file is part of Freedomotic
 *
 * This Program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This Program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Freedomotic; see the file COPYING.  If not, see
 * .
 */
package com.freedomotic.bus;

import com.freedomotic.app.Freedomotic;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;

/**
 * Bus boot statuses enumeration
 * 
 * @author Freedomotic Team
 *
 */
public enum BootStatus {

    /**
     *
     */
    STOPPED(0),

    /**
     *
     */
    BOOTING(1),

    /**
     *
     */
    FAILED(2),

    /**
     *
     */
    STARTED(3),

    /**
     *
     */
    STOPPING(4);

	private static final Logger LOG = Logger.getLogger(BootStatus.class.getName());
	
	private static final Map lookup = new HashMap();
	private static final EnumSet initStatuses = EnumSet.of(STOPPED, BOOTING);
	private static final EnumSet destroyStatuses = EnumSet.of(STOPPED, STOPPING);
	
	private static BootStatus currentStatus = STOPPED; // initial status
	private static Throwable throwable;
	
	static {
		
		for (BootStatus s : EnumSet.allOf(BootStatus.class)){
			lookup.put(s.getCode(), s);
		}
	}

    private int code;

	private BootStatus(int code) {
		
		this.code = code;
	}

	/**
	 * Getter method for code 
	 * @return the code (as int value)
	 */
	public int getCode() {
		
		return code;
	}

	/**
	 * Translates an int code into his {@link BootStatus} enumeration
	 * @param code the int value of code
	 * @return the enumerated object
	 */
	public static BootStatus get(int code) {
		
		return lookup.get(code);
	}

	/**
	 * Setter method for this current status holder
	 * 
	 * @param status the status to set
	 */
	public static void setCurrentStatus(BootStatus status) {
		
		currentStatus = status;
	}
	
	/**
	 * Getter method for this current status holder 
	 * @return the current status
	 */
	public static BootStatus getCurrentStatus() {
		
		return currentStatus;
	}

	/**
	 * Getter method for the fault status of this holder
	 * @return null or a {@link Throwable} 
	 */
	// TODO Java8 Return an Optional
	public static Throwable getThrowable() {
		return throwable;
	}

	/**
	 * Setter method for the fault status of this holder
	 * @param t The throwable 
	 */
	public static void setThrowable(Throwable t) {
		
		BootStatus.throwable = t;
		BootStatus.currentStatus = BootStatus.FAILED;

		// FIXME LCG stop bootstrap
		LOG.severe(Freedomotic.getStackTraceInfo(t));
	}
	
	private static boolean isAnInitialStatus(BootStatus status) {
		
		return initStatuses.contains(status);
	}
	
	/**
	 * Holder current status is... method. 
	 * 
	 * @return true if current status is an ... status.
	 * false otherwise.
	 */
	public static boolean isStarting() {
		
		return isAnInitialStatus(currentStatus);
	}
	
	private static boolean isAnDestroyStatus(BootStatus status) {
		
		return destroyStatuses.contains(status);
	}

	/**
	 * Holder current status is... method. 
	 * 
	 * @return true if current status is an ... status.
	 * false otherwise.
	 */
	public static boolean isStopping() {
		
		return isAnDestroyStatus(currentStatus);
	}
}