/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.replication.common;
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/**
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* The various status a DS can take.
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*/
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public enum ServerStatus
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{
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/**
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* Invalid status: special status used in state machine implementation to
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* return an error (impossible status). See class StatusMachine class for
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* further details.
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*/
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INVALID_STATUS((byte) -1),
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/**
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* Not connected status: special status used as initial status of the state
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* machine in the DS context only as already connected while state machine
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* considered in RS context.
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*/
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NOT_CONNECTED_STATUS((byte) 0),
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/**
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* DS in normal status.
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* When:
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* - everything is fine
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* Properties:
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* - no referrals
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* - updates received from RS
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* - if assured mode, RS asks for ack
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*/
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NORMAL_STATUS((byte) 1),
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/**
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* DS in degraded status.
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* When:
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* - DS is too late compared to number of updates RS has to send
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* Properties:
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* - referrals returned
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* - updates received from RS
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* - if assured mode, RS does not asks for ack
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*/
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DEGRADED_STATUS((byte) 2),
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/**
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* DS in full update (local DS is initialized from another DS).
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* (if local DS initializes another, it is not in this status)
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* When:
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* - A full update is being performed to our local DS
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* Properties:
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* - referrals returned
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* - no updates received from RS
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* - no ack requested as no updates received
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*/
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FULL_UPDATE_STATUS((byte) 3),
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/**
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* DS in bad generation id status.
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* When:
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* - A reset generation id order has been sent to topology
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* Properties:
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* - no referrals returned
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* - no updates received from RS
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* - no ack requested as no updates received
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*/
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BAD_GEN_ID_STATUS((byte) 4);
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// The status value
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private byte value = -1;
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private ServerStatus(byte value)
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{
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this.value = value;
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}
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/**
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* Returns the ServerStatus matching the passed status numeric representation.
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* @param value The numeric value for the status to return
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* @return The matching ServerStatus
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* @throws java.lang.IllegalArgumentException If provided status value is
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* wrong
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*/
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public static ServerStatus valueOf(byte value) throws IllegalArgumentException
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{
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switch (value)
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{
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case -1:
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return INVALID_STATUS;
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case 0:
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return NOT_CONNECTED_STATUS;
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case 1:
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return NORMAL_STATUS;
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case 2:
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return DEGRADED_STATUS;
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case 3:
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return FULL_UPDATE_STATUS;
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case 4:
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return BAD_GEN_ID_STATUS;
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default:
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throw new IllegalArgumentException("Wrong status numeric value: " +
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value);
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}
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}
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/**
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* Get a numeric representation of the status.
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* @return The numeric representation of the status
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*/
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public byte getValue()
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{
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return value;
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}
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/**
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* Get a user readable string representing this status (User friendly string
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* for monitoring purpose).
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* @return A user readable string representing this status.
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*/
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public String toString()
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{
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switch (value)
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{
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case -1:
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return "Invalid";
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case 0:
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return "Not connected";
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case 1:
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return "Normal";
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case 2:
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return "Degraded";
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case 3:
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return "Full update";
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case 4:
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return "Bad generation id";
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default:
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throw new IllegalArgumentException("Wrong status numeric value: " +
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value);
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}
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}
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}
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