mirror of https://github.com/apache/cloudstack.git
116 lines
5.9 KiB
Java
116 lines
5.9 KiB
Java
/**
|
|
* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
|
|
*
|
|
* This software is licensed under the GNU General Public License v3 or later.
|
|
*
|
|
* It 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 3 of the License, or 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
package com.cloud.vm;
|
|
|
|
import java.util.List;
|
|
import java.util.Set;
|
|
|
|
import com.cloud.utils.fsm.FiniteState;
|
|
import com.cloud.utils.fsm.StateMachine;
|
|
import com.cloud.vm.VirtualMachine.Event;
|
|
|
|
public enum State implements FiniteState<State, Event> {
|
|
Creating(true, "VM is being created"),
|
|
Starting(true, "VM is being started. At this state, you should find host id filled which means it's being started on that host."),
|
|
Running(false, "VM is running. host id has the host that it is running on."),
|
|
Stopping(true, "VM is being stopped. host id has the host that it is being stopped on."),
|
|
Stopped(false, "VM is stopped. host id should be null."),
|
|
Destroyed(false, "VM is marked for destroy."),
|
|
Expunging(true, "VM is being expunged."),
|
|
Migrating(true, "VM is being migrated. host id holds to from host"),
|
|
Error(false, "VM is in error"),
|
|
Unknown(false, "VM state is unknown.");
|
|
|
|
private final boolean _transitional;
|
|
String _description;
|
|
|
|
private State(boolean transitional, String description) {
|
|
_transitional = transitional;
|
|
_description = description;
|
|
}
|
|
|
|
@Override
|
|
public String getDescription() {
|
|
return _description;
|
|
}
|
|
|
|
public boolean isTransitional() {
|
|
return _transitional;
|
|
}
|
|
|
|
@Override
|
|
public State getNextState(VirtualMachine.Event e) {
|
|
return s_fsm.getNextState(this, e);
|
|
}
|
|
|
|
@Override
|
|
public List<State> getFromStates(VirtualMachine.Event e) {
|
|
return s_fsm.getFromStates(this, e);
|
|
}
|
|
|
|
@Override
|
|
public Set<Event> getPossibleEvents() {
|
|
return s_fsm.getPossibleEvents(this);
|
|
}
|
|
|
|
@Override
|
|
public StateMachine<State, Event> getStateMachine() {
|
|
return s_fsm;
|
|
}
|
|
|
|
|
|
protected static final StateMachine<State, VirtualMachine.Event> s_fsm = new StateMachine<State, VirtualMachine.Event>();
|
|
static {
|
|
s_fsm.addTransition(null, VirtualMachine.Event.CreateRequested, State.Creating);
|
|
s_fsm.addTransition(State.Creating, VirtualMachine.Event.OperationSucceeded, State.Stopped);
|
|
s_fsm.addTransition(State.Creating, VirtualMachine.Event.OperationFailed, State.Error);
|
|
s_fsm.addTransition(State.Stopped, VirtualMachine.Event.StartRequested, State.Starting);
|
|
s_fsm.addTransition(State.Stopped, VirtualMachine.Event.DestroyRequested, State.Destroyed);
|
|
s_fsm.addTransition(State.Error, VirtualMachine.Event.DestroyRequested, State.Destroyed);
|
|
s_fsm.addTransition(State.Stopped, VirtualMachine.Event.StopRequested, State.Stopped);
|
|
s_fsm.addTransition(State.Stopped, VirtualMachine.Event.AgentReportStopped, State.Stopped);
|
|
s_fsm.addTransition(State.Starting, VirtualMachine.Event.OperationRetry, State.Starting);
|
|
s_fsm.addTransition(State.Starting, VirtualMachine.Event.OperationSucceeded, State.Running);
|
|
s_fsm.addTransition(State.Starting, VirtualMachine.Event.OperationFailed, State.Stopped);
|
|
s_fsm.addTransition(State.Starting, VirtualMachine.Event.AgentReportRunning, State.Running);
|
|
s_fsm.addTransition(State.Starting, VirtualMachine.Event.AgentReportStopped, State.Stopped);
|
|
s_fsm.addTransition(State.Destroyed, VirtualMachine.Event.RecoveryRequested, State.Stopped);
|
|
s_fsm.addTransition(State.Destroyed, VirtualMachine.Event.ExpungeOperation, State.Expunging);
|
|
s_fsm.addTransition(State.Creating, VirtualMachine.Event.MigrationRequested, State.Destroyed);
|
|
s_fsm.addTransition(State.Running, VirtualMachine.Event.MigrationRequested, State.Migrating);
|
|
s_fsm.addTransition(State.Running, VirtualMachine.Event.AgentReportRunning, State.Running);
|
|
s_fsm.addTransition(State.Running, VirtualMachine.Event.AgentReportStopped, State.Stopped);
|
|
s_fsm.addTransition(State.Running, VirtualMachine.Event.StopRequested, State.Stopping);
|
|
s_fsm.addTransition(State.Migrating, VirtualMachine.Event.MigrationRequested, State.Migrating);
|
|
s_fsm.addTransition(State.Migrating, VirtualMachine.Event.OperationSucceeded, State.Running);
|
|
s_fsm.addTransition(State.Migrating, VirtualMachine.Event.OperationFailed, State.Running);
|
|
s_fsm.addTransition(State.Migrating, VirtualMachine.Event.MigrationFailedOnSource, State.Running);
|
|
s_fsm.addTransition(State.Migrating, VirtualMachine.Event.MigrationFailedOnDest, State.Running);
|
|
s_fsm.addTransition(State.Migrating, VirtualMachine.Event.AgentReportRunning, State.Running);
|
|
s_fsm.addTransition(State.Migrating, VirtualMachine.Event.AgentReportStopped, State.Stopped);
|
|
s_fsm.addTransition(State.Stopping, VirtualMachine.Event.OperationSucceeded, State.Stopped);
|
|
s_fsm.addTransition(State.Stopping, VirtualMachine.Event.OperationFailed, State.Running);
|
|
s_fsm.addTransition(State.Stopping, VirtualMachine.Event.AgentReportRunning, State.Running);
|
|
s_fsm.addTransition(State.Stopping, VirtualMachine.Event.AgentReportStopped, State.Stopped);
|
|
s_fsm.addTransition(State.Stopping, VirtualMachine.Event.StopRequested, State.Stopping);
|
|
s_fsm.addTransition(State.Expunging, VirtualMachine.Event.OperationFailed, State.Expunging);
|
|
s_fsm.addTransition(State.Expunging, VirtualMachine.Event.ExpungeOperation, State.Expunging);
|
|
}
|
|
}
|