mirror of
https://github.com/apache/cloudstack
synced 2026-08-11 08:28:00 +00:00
100 lines
4.9 KiB
Java
100 lines
4.9 KiB
Java
/**
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* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
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*
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* This software is licensed under the GNU General Public License v3 or later.
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*
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* It is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package com.cloud.vm;
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import java.util.List;
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import com.cloud.utils.fsm.StateMachine;
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public enum State {
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Creating(true),
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Starting(true),
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Running(false),
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Stopping(true),
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Stopped(false),
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Destroyed(false),
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Expunging(true),
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Migrating(true),
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Error(false),
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Unknown(false);
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private final boolean _transitional;
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private State(boolean transitional) {
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_transitional = transitional;
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}
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public boolean isTransitional() {
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return _transitional;
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}
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public static String[] toStrings(State... states) {
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String[] strs = new String[states.length];
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for (int i = 0; i < states.length; i++) {
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strs[i] = states[i].toString();
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}
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return strs;
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}
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public State getNextState(VirtualMachine.Event e) {
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return s_fsm.getNextState(this, e);
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}
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public State[] getFromStates(VirtualMachine.Event e) {
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List<State> from = s_fsm.getFromStates(this, e);
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return from.toArray(new State[from.size()]);
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}
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protected static final StateMachine<State, VirtualMachine.Event> s_fsm = new StateMachine<State, VirtualMachine.Event>();
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static {
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s_fsm.addTransition(null, VirtualMachine.Event.CreateRequested, State.Creating);
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s_fsm.addTransition(State.Creating, VirtualMachine.Event.OperationSucceeded, State.Stopped);
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s_fsm.addTransition(State.Creating, VirtualMachine.Event.OperationFailed, State.Destroyed);
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s_fsm.addTransition(State.Stopped, VirtualMachine.Event.StartRequested, State.Starting);
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s_fsm.addTransition(State.Stopped, VirtualMachine.Event.DestroyRequested, State.Destroyed);
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s_fsm.addTransition(State.Stopped, VirtualMachine.Event.StopRequested, State.Stopped);
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s_fsm.addTransition(State.Stopped, VirtualMachine.Event.AgentReportStopped, State.Stopped);
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s_fsm.addTransition(State.Starting, VirtualMachine.Event.OperationRetry, State.Starting);
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s_fsm.addTransition(State.Starting, VirtualMachine.Event.OperationSucceeded, State.Running);
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s_fsm.addTransition(State.Starting, VirtualMachine.Event.OperationFailed, State.Stopped);
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s_fsm.addTransition(State.Starting, VirtualMachine.Event.AgentReportRunning, State.Running);
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s_fsm.addTransition(State.Starting, VirtualMachine.Event.AgentReportStopped, State.Stopped);
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s_fsm.addTransition(State.Destroyed, VirtualMachine.Event.RecoveryRequested, State.Stopped);
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s_fsm.addTransition(State.Destroyed, VirtualMachine.Event.ExpungeOperation, State.Expunging);
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s_fsm.addTransition(State.Creating, VirtualMachine.Event.MigrationRequested, State.Destroyed);
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s_fsm.addTransition(State.Running, VirtualMachine.Event.MigrationRequested, State.Migrating);
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s_fsm.addTransition(State.Running, VirtualMachine.Event.AgentReportRunning, State.Running);
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s_fsm.addTransition(State.Running, VirtualMachine.Event.AgentReportStopped, State.Stopped);
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s_fsm.addTransition(State.Running, VirtualMachine.Event.StopRequested, State.Stopping);
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s_fsm.addTransition(State.Migrating, VirtualMachine.Event.MigrationRequested, State.Migrating);
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s_fsm.addTransition(State.Migrating, VirtualMachine.Event.OperationSucceeded, State.Running);
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s_fsm.addTransition(State.Migrating, VirtualMachine.Event.OperationFailed, State.Running);
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s_fsm.addTransition(State.Migrating, VirtualMachine.Event.AgentReportRunning, State.Running);
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s_fsm.addTransition(State.Migrating, VirtualMachine.Event.AgentReportStopped, State.Stopped);
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s_fsm.addTransition(State.Stopping, VirtualMachine.Event.OperationSucceeded, State.Stopped);
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s_fsm.addTransition(State.Stopping, VirtualMachine.Event.OperationFailed, State.Running);
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s_fsm.addTransition(State.Stopping, VirtualMachine.Event.AgentReportRunning, State.Running);
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s_fsm.addTransition(State.Stopping, VirtualMachine.Event.AgentReportStopped, State.Stopped);
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s_fsm.addTransition(State.Stopping, VirtualMachine.Event.StopRequested, State.Stopping);
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s_fsm.addTransition(State.Expunging, VirtualMachine.Event.OperationFailed, State.Expunging);
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s_fsm.addTransition(State.Expunging, VirtualMachine.Event.ExpungeOperation, State.Expunging);
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}
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}
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