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/**
* AlertsManager.java
*
* Copyright (c) 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 Affero 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 Affero General Public License
* for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
package org.gluster.storage.management.console;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.preference.IPreferenceStore;
import org.gluster.storage.management.console.preferences.PreferenceConstants;
import org.gluster.storage.management.core.model.Alert;
import org.gluster.storage.management.core.model.Brick;
import org.gluster.storage.management.core.model.Cluster;
import org.gluster.storage.management.core.model.Disk;
import org.gluster.storage.management.core.model.GlusterServer;
import org.gluster.storage.management.core.model.Partition;
import org.gluster.storage.management.core.model.Volume;
import org.gluster.storage.management.core.model.Alert.ALERT_TYPES;
import org.gluster.storage.management.core.model.Brick.BRICK_STATUS;
import org.gluster.storage.management.core.model.Server.SERVER_STATUS;
import org.gluster.storage.management.core.model.Volume.VOLUME_STATUS;
import org.gluster.storage.management.core.utils.NumberUtil;
public class AlertsManager {
private List<Alert> alerts = new ArrayList<Alert>();
private Cluster cluster;
private Double CPU_USAGE_THRESHOLD;
private Double MEMORY_USAGE_THRESHOLD;
private Double DISK_SPACE_USAGE_THRESHOLD;
public AlertsManager(Cluster cluster) {
this.cluster = cluster;
IPreferenceStore preferenceStore = Activator.getDefault().getPreferenceStore();
CPU_USAGE_THRESHOLD = preferenceStore.getDouble(PreferenceConstants.P_SERVER_CPU_CRITICAL_THRESHOLD);
MEMORY_USAGE_THRESHOLD = preferenceStore.getDouble(PreferenceConstants.P_SERVER_MEMORY_USAGE_THRESHOLD);
DISK_SPACE_USAGE_THRESHOLD = preferenceStore.getDouble(PreferenceConstants.P_DISK_SPACE_USAGE_THRESHOLD);
}
public List<Alert> getAlerts() {
return alerts;
}
public Alert getAlert(String id) {
for (Alert alert : getAlerts()) {
if (alert.getId().equals(id)) {
return alert;
}
}
return null;
}
public void addAlert(Alert alert) {
alerts.add(alert);
}
public void addAlerts(List<Alert> alerts) {
this.alerts.addAll(alerts);
}
public void setAlerts(List<Alert> alerts) {
this.alerts = alerts;
}
public Boolean removeAlert(String id) {
for (int i = 0; i < alerts.size(); i++) {
if (alerts.get(i).getId().equals(id)) {
return (alerts.remove(i) != null);
}
}
return false;
}
public void clearAll() {
this.alerts.clear();
}
public void buildAlerts() {
clearAll();
addAlerts(getServerAlerts());
addAlerts(getVolumeAlerts());
}
private List<Alert> getServerAlerts() {
List<Alert> serverAlerts = new ArrayList<Alert>();
Alert offlineServerAlert = getOfflineServerAlerts();
if (offlineServerAlert != null) {
serverAlerts.add(offlineServerAlert); // Single alert for offline servers
}
for (GlusterServer server : cluster.getServers()) {
// To check off line servers
// if (server.getStatus() == SERVER_STATUS.OFFLINE) {
// serverAlerts.add(new Alert(ALERT_TYPES.OFFLINE_SERVERS_ALERT, server.getName(), "Server ["
// + server.getName() + "] is Offline"));
// continue; // If the server is Offline skip other Alert builds
// }
// To check High CPU usage
if (server.getCpuUsage() >= CPU_USAGE_THRESHOLD) {
serverAlerts.add(new Alert(ALERT_TYPES.CPU_USAGE_ALERT, server.getName(),
Alert.ALERT_TYPE_STR[ALERT_TYPES.CPU_USAGE_ALERT.ordinal()] + " ["
+ NumberUtil.formatNumber(server.getCpuUsage()) + "] in server [" + server.getName()
+ "]"));
}
// To check High Memory usage
Double memoryUtilized = server.getMemoryInUse() / server.getTotalMemory() * 100d;
if (memoryUtilized >= MEMORY_USAGE_THRESHOLD) {
serverAlerts.add(new Alert(ALERT_TYPES.MEMORY_USAGE_ALERT, server.getName(),
Alert.ALERT_TYPE_STR[ALERT_TYPES.MEMORY_USAGE_ALERT.ordinal()] + " ["
+ NumberUtil.formatNumber(memoryUtilized) + "%] in server [" + server.getName()
+ "]"));
}
// To Check low disk space
serverAlerts.addAll(getLowDiskAlerts(server));
}
return serverAlerts;
}
private Alert getOfflineServerAlerts() {
List<String> offlineServers = new ArrayList<String>();
for (GlusterServer server : cluster.getServers()) {
if (server.getStatus() == SERVER_STATUS.OFFLINE) {
offlineServers.add(server.getName());
}
}
if (offlineServers.size() > 0) {
return new Alert(ALERT_TYPES.OFFLINE_SERVERS_ALERT, "Server",
Alert.ALERT_TYPE_STR[ALERT_TYPES.OFFLINE_SERVERS_ALERT.ordinal()] + "(s) "
+ offlineServers.toString());
}
return null;
}
private List<Alert> getLowDiskAlerts(GlusterServer server) {
List<Alert> diskAlerts = new ArrayList<Alert>();
boolean hasPartition;
Double deviceSpaceUsed;
for (Disk disk : server.getDisks()) {
hasPartition = false;
for (Partition partition : disk.getPartitions()) {
hasPartition = true;
deviceSpaceUsed = partition.getSpaceInUse() / partition.getSpace() * 100d;
if (deviceSpaceUsed >= DISK_SPACE_USAGE_THRESHOLD) {
diskAlerts.add(new Alert(ALERT_TYPES.DISK_USAGE_ALERT, partition.getQualifiedName(),
Alert.ALERT_TYPE_STR[ALERT_TYPES.DISK_USAGE_ALERT.ordinal()] + " ["
+ NumberUtil.formatNumber(deviceSpaceUsed) + "% used] in disk ["
+ partition.getQualifiedName() + "]"));
}
}
if (hasPartition) {
continue; // Do not check disk usage
}
// If it is disk
deviceSpaceUsed = disk.getSpaceInUse() / disk.getSpace() * 100d;
if (deviceSpaceUsed >= DISK_SPACE_USAGE_THRESHOLD) {
diskAlerts.add(new Alert(ALERT_TYPES.DISK_USAGE_ALERT, disk.getQualifiedName(),
Alert.ALERT_TYPE_STR[ALERT_TYPES.DISK_USAGE_ALERT.ordinal()] + " ["
+ NumberUtil.formatNumber(deviceSpaceUsed) + "% used] in ["
+ disk.getQualifiedName() + "]"));
}
}
return diskAlerts;
}
private List<Alert> getVolumeAlerts() {
List<Alert> volumeAlerts = new ArrayList<Alert>();
List<String> offlineBricks = new ArrayList<String>();
for (Volume volume : cluster.getVolumes()) {
if (volume.getStatus() == VOLUME_STATUS.OFFLINE) {
volumeAlerts.add(new Alert(ALERT_TYPES.OFFLINE_VOLUME_ALERT, volume.getName(),
Alert.ALERT_TYPE_STR[ALERT_TYPES.OFFLINE_VOLUME_ALERT.ordinal()] + " [" + volume.getName()
+ "]"));
continue;
}
// To check off line bricks
offlineBricks = new ArrayList<String>();
for (Brick brick : volume.getBricks()) {
if (brick.getStatus() == BRICK_STATUS.OFFLINE) {
offlineBricks.add(brick.getQualifiedName());
}
}
// One offline brick alert per volume
if (offlineBricks.size() > 0) {
volumeAlerts.add(new Alert(ALERT_TYPES.OFFLINE_VOLUME_BRICKS_ALERT, volume.getName(),
Alert.ALERT_TYPE_STR[ALERT_TYPES.OFFLINE_VOLUME_BRICKS_ALERT.ordinal()] + " "
+ offlineBricks.toString() + " in volume " + volume.getName()));
}
}
return volumeAlerts;
}
}
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