/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2015 ForgeRock AS.
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*/
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package org.opends.server.backends.pluggable.spi;
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import org.forgerock.i18n.LocalizableMessage;
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/**
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* Represents the current status of a storage with respect to its resources.
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*/
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public final class StorageStatus
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{
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/** Internal States. */
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private enum Code
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{
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/** Storage is working normally. */
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WORKING,
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/** Storage resources start getting scarce. */
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LOCKED_DOWN,
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/** Storage has no resources to execute operations. */
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UNUSABLE
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}
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/** Hopefully resources are always in this state. */
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private static final StorageStatus WORKING = new StorageStatus(Code.WORKING, null);
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/** Current status. */
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private final Code code;
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/** Current warning/error message. */
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private final LocalizableMessage reason;
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/**
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* Returns normal state.
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*
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* @return normal state
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*/
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public static StorageStatus working()
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{
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return WORKING;
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}
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/**
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* Returns state for resources getting scarce.
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*
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* @param reason the message to forward
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* @return state for resources getting scarce
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*/
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public static StorageStatus lockedDown(LocalizableMessage reason)
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{
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return new StorageStatus(Code.LOCKED_DOWN, reason);
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}
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/**
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* Returns state for no more resources.
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*
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* @param reason the message to forward
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* @return state for no more resources
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*/
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public static StorageStatus unusable(LocalizableMessage reason)
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{
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return new StorageStatus(Code.UNUSABLE, reason);
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}
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private StorageStatus(Code code, LocalizableMessage reason)
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{
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this.code = code;
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this.reason = reason;
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}
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/**
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* Returns true if resources are getting scarce.
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*
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* @return true if resources are getting scarce
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*/
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public boolean isLockedDown()
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{
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return code == Code.LOCKED_DOWN;
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}
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/**
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* Returns true if state is normal.
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*
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* @return true if state is normal
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*/
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public boolean isWorking()
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{
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return code == Code.WORKING;
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}
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/**
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* Returns true if no more resources are available.
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*
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* @return true if no more resources are available
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*/
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public boolean isUnusable()
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{
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return code == Code.UNUSABLE;
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}
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/**
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* Returns the error message for non working states.
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*
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* @return the error message for non working states
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*/
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public LocalizableMessage getReason()
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{
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return reason;
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}
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}
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