1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/*******************************************************************************
* Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.com>
* This file is part of Gluster Management Console.
*
* Gluster Management Console 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 (at your option) any later version.
*
* Gluster Management Console 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 org.gluster.storage.management.console.actions;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.gluster.storage.management.client.VolumesClient;
import org.gluster.storage.management.console.GlusterDataModelManager;
import org.gluster.storage.management.console.IImageKeys;
import org.gluster.storage.management.console.utils.GUIHelper;
import org.gluster.storage.management.core.constants.CoreConstants;
import org.gluster.storage.management.core.model.Volume;
import org.gluster.storage.management.core.model.Volume.VOLUME_STATUS;
public class StopVolumeAction extends AbstractMonitoredActionDelegate {
private GlusterDataModelManager modelManager = GlusterDataModelManager.getInstance();
private List<Volume> selectedVolumes = new ArrayList<Volume>();
private List<String> selectedVolumeNames = new ArrayList<String>();
private List<String> onlineVolumeNames = new ArrayList<String>();
private List<String> stoppedVolumes = new ArrayList<String>();
private List<Volume> failedVolumes = new ArrayList<Volume>();
private String errorMessage = null;
@Override
protected void performAction(final IAction action, IProgressMonitor monitor) {
collectVolumeNames();
if (onlineVolumeNames.size() == 0) {
showWarningDialog(action.getDescription(), "Volumes " + selectedVolumeNames + " already stopped!");
return; // Volumes already stopped, Don't do anything.
}
Integer userAction = new MessageDialog(getShell(), "Stop Volume", GUIHelper.getInstance().getImage(
IImageKeys.VOLUME_16x16), "Are you sure you want to stop the following volumes?"
+ CoreConstants.NEWLINE + onlineVolumeNames, MessageDialog.QUESTION,
new String[] { "No", "Yes" }, -1).open();
if (userAction <= 0) { // user select cancel or pressed escape key
return;
}
List<String> cifsVolumes = GlusterDataModelManager.getInstance().getCifsEnabledVolumeNames(selectedVolumes);
List<String> offlineServers = GlusterDataModelManager.getInstance().getOfflineServers();
// One or more servers are offline, Show warning if cifs is enabled
if (cifsVolumes != null && cifsVolumes.size() > 0 && offlineServers != null && offlineServers.size() > 0) {
userAction = new MessageDialog(getShell(), "CIFS configuration", GUIHelper.getInstance().getImage(
IImageKeys.VOLUME_16x16),
"Performing CIFS updates when one or more servers are offline can trigger "
+ "inconsistent behavior for CIFS accesses in the cluster." + CoreConstants.NEWLINE
+ "Are you sure you want to continue?", MessageDialog.QUESTION,
new String[] { "No", "Yes" }, -1).open();
if (userAction != 1) {
return; // Do not stop volume services
}
}
stopVolumes(selectedVolumes, false, monitor);
// Check for errors, trying to force stop in case of errors
checkForErrors(action, monitor, true);
}
private void checkForErrors(final IAction action, IProgressMonitor monitor, boolean tryForceStop) {
String message = null;
if (stoppedVolumes.size() == 0) { // No volume(s) stopped successfully
message = "Volume(s) " + failedVolumes + " could not be stopped! " + CoreConstants.NEWLINE
+ "Error: [" + errorMessage + "]";
if(tryForceStop) {
forceStopVolumes(action.getDescription(), message + CoreConstants.NEWLINE
+ "Do you want to stop forcefully?", monitor);
// check for errors without trying to force stop in case of errors
checkForErrors(action, monitor, false);
return;
} else {
showErrorDialog(action.getDescription(), message);
return;
}
} else {
message = "Volume(s) " + stoppedVolumes + " stopped successfully!";
if (!errorMessage.isEmpty()) {
if (failedVolumes.size() > 0) {
message = message + CoreConstants.NEWLINE + CoreConstants.NEWLINE + "Volume(s) "
+ failedVolumes + " could not be stopped! [" + errorMessage + "]";
if(tryForceStop) {
forceStopVolumes(action.getDescription(), message + CoreConstants.NEWLINE
+ "Do you want to stop forcefully?", monitor);
// check for errors without trying to force stop in case of errors
checkForErrors(action, monitor, false);
return;
}
} else { // Stop volume success, but post stop volume fails, append the error message
message += CoreConstants.NEWLINE + CoreConstants.NEWLINE + errorMessage;
}
}
if (errorMessage.isEmpty()) {
showInfoDialog(action.getDescription(), message);
} else {
showWarningDialog(action.getDescription(), message);
}
}
}
private void forceStopVolumes(String actionDesc, String message, IProgressMonitor monitor) {
boolean forceStop = showConfirmDialog(actionDesc, message);
if (!forceStop) {
return;
}
stopVolumes(failedVolumes, true, monitor);
}
private void stopVolumes(List<Volume> volumes, Boolean force, IProgressMonitor monitor) {
VolumesClient vc = new VolumesClient();
stoppedVolumes.clear();
failedVolumes.clear();
errorMessage = "";
monitor.beginTask("Stopping Selected Volumes...", volumes.size());
// Stopping of a volume results in changes to the model, and ultimately updates the "selectedVolumes" list,
// over which we are iterating, thus resulting in ConcurrentModificationException. To avoid this, we iterate
// over an array obtained from the list.
for (Volume volume : volumes.toArray(new Volume[0])) {
if(monitor.isCanceled()) {
break;
}
if (volume.getStatus() == VOLUME_STATUS.OFFLINE) {
monitor.worked(1);
continue; // skip if already stopped
}
try {
monitor.setTaskName("Stopping volume [" + volume.getName() + "]");
vc.stopVolume(volume.getName(), force);
stoppedVolumes.add(volume.getName());
modelManager.updateVolumeStatus(volume, VOLUME_STATUS.OFFLINE);
} catch (Exception e) {
// If any post volume stop activity failed, update the volume status
if (vc.getVolume(volume.getName()).getStatus() == VOLUME_STATUS.OFFLINE) {
// stop volume succeed, so add it to stoppedVolumes
stoppedVolumes.add(volume.getName());
modelManager.updateVolumeStatus(volume, VOLUME_STATUS.OFFLINE);
errorMessage += "Volume [" + volume.getName() + "] stopped, but following error occured: ["
+ e.getMessage() + "]";
} else {
failedVolumes.add(volume);
errorMessage += "[" + volume.getName() + "] : " + e.getMessage() + CoreConstants.NEWLINE;
}
}
// Update the model by fetching latest volume info (NOT JUST STATUS)
try {
modelManager.refreshVolumeData(volume);
} catch (Exception e) {
errorMessage += "Failed to update volume info on UI. [" + e.getMessage() + "]";
}
monitor.worked(1);
}
monitor.done();
}
private void collectVolumeNames() {
selectedVolumeNames.clear();
onlineVolumeNames.clear();
for (Volume volume : selectedVolumes) {
selectedVolumeNames.add(volume.getName());
if (volume.getStatus() == VOLUME_STATUS.ONLINE) {
onlineVolumeNames.add(volume.getName());
}
}
}
@Override
public void dispose() {
}
/*
* (non-Javadoc)
*
* @see
* org.gluster.storage.management.console.actions.AbstractActionDelegate#selectionChanged(org.eclipse.jface.action.IAction
* , org.eclipse.jface.viewers.ISelection)
*/
@Override
public void selectionChanged(IAction action, ISelection selection) {
Set<Volume> selectedVolumeNames = GUIHelper.getInstance().getSelectedEntities(getWindow(), Volume.class);
selectedVolumes.clear();
if (selectedVolumeNames == null || selectedVolumeNames.isEmpty()) {
super.selectionChanged(action, selection);
if (selectedEntity instanceof Volume) {
selectedVolumes.add((Volume) selectedEntity);
}
} else {
selectedVolumes.addAll(selectedVolumeNames); //TODO reverse the collection to maintain the selected order
}
action.setEnabled(false);
// To enable the action
for (Volume volume : selectedVolumes) {
if (volume.getStatus() == VOLUME_STATUS.ONLINE) {
action.setEnabled(true);
break; // If find an online volume, enable the action
}
}
}
}
|
