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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.faultmanagement.impl;
import static com.google.common.base.Strings.isNullOrEmpty;
import java.util.Dictionary;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Modified;
import org.apache.felix.scr.annotations.Property;
import static org.onlab.util.Tools.nullIsNotFound;
import org.onosproject.incubator.net.faultmanagement.alarm.Alarm;
import org.onosproject.incubator.net.faultmanagement.alarm.AlarmEntityId;
import org.onosproject.incubator.net.faultmanagement.alarm.AlarmEvent;
import org.onosproject.incubator.net.faultmanagement.alarm.AlarmId;
import org.onosproject.incubator.net.faultmanagement.alarm.AlarmListener;
import org.onosproject.incubator.net.faultmanagement.alarm.AlarmService;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DeviceId;
import org.slf4j.Logger;
import static org.slf4j.LoggerFactory.getLogger;
import org.apache.felix.scr.annotations.Service;
import static org.onlab.util.Tools.get;
import org.onosproject.core.ApplicationId;
import org.onosproject.core.IdGenerator;
import org.onosproject.core.CoreService;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.onlab.util.ItemNotFoundException;
import org.onosproject.incubator.net.faultmanagement.alarm.DefaultAlarm;
import org.osgi.service.component.ComponentContext;
/**
* Implementation of the Alarm service.
*/
@Component(immediate = true)
@Service
public class AlarmsManager implements AlarmService {
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected CoreService coreService;
private final Logger log = getLogger(getClass());
private ApplicationId appId;
private IdGenerator idGenerator;
@Property(name = "fmDevices", value = "127.0.0.1", label = "Instance-specific configurations")
private String devConfigs;
private final Map<AlarmId, Alarm> alarms = new ConcurrentHashMap<>();
private final AtomicLong alarmIdGenerator = new AtomicLong(0);
@Override
public Alarm update(final Alarm replacement) {
final Alarm found = alarms.get(replacement.id());
if (found == null) {
throw new ItemNotFoundException("Alarm with id " + replacement.id() + " found");
}
final Alarm updated = new DefaultAlarm.Builder(found).
withAcknowledged(replacement.acknowledged()).
withAssignedUser(replacement.assignedUser()).build();
alarms.put(replacement.id(), updated);
return updated;
}
@Override
public int getActiveAlarmCount(final DeviceId deviceId) {
//TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
private static final String NOT_SUPPORTED_YET = "Not supported yet.";
@Override
public Alarm getAlarm(final AlarmId alarmId) {
return nullIsNotFound(
alarms.get(alarmId),
"Alarm is not found");
}
@Override
public Set<Alarm> getAlarms() {
//TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
@Override
public Set<Alarm> getActiveAlarms() {
// Enpty set if no values
return alarms.isEmpty() ? new HashSet<>() : new HashSet<>(alarms.values());
}
private static DefaultAlarm generateFake(final DeviceId deviceId, final AlarmId alarmId) {
return new DefaultAlarm.Builder(
alarmId, deviceId, "NE is not reachable", Alarm.SeverityLevel.MAJOR, System.currentTimeMillis()).
withTimeUpdated(System.currentTimeMillis()).
withServiceAffecting(true)
.withAcknowledged(true).
withManuallyClearable(true)
.withAssignedUser("user1").build();
}
@Override
public Set<Alarm> getAlarms(final Alarm.SeverityLevel severity) {
//TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
@Override
public Set<Alarm> getAlarms(final DeviceId deviceId) {
//TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
@Override
public Set<Alarm> getAlarms(final DeviceId deviceId, final AlarmEntityId source) {
//TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
@Override
public Set<Alarm> getAlarmsForLink(final ConnectPoint src, final ConnectPoint dst) {
//TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
@Override
public Set<Alarm> getAlarmsForFlow(final DeviceId deviceId, final long flowId) {
//TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
private void discoverAlarmsForDevice(final DeviceId deviceId) {
final AlarmId alarmId = new AlarmId(alarmIdGenerator.incrementAndGet());
// TODO In a new thread invoke SNMP Provider with DeviceId and device type and when done update our of alarms
//
alarms.put(alarmId, generateFake(deviceId, alarmId));
}
private class InternalAlarmListener implements AlarmListener {
@Override
public void event(final AlarmEvent event) {
// TODO
throw new UnsupportedOperationException(NOT_SUPPORTED_YET);
}
}
@Activate
public void activate(final ComponentContext context) {
log.info("Activate ...");
appId = coreService.registerApplication("org.onos.faultmanagement.alarms");
idGenerator = coreService.getIdGenerator("alarm-ids");
log.info("Started with appId={} idGenerator={}", appId, idGenerator);
final boolean result = modified(context);
log.info("modified result = {}", result);
}
@Deactivate
public void deactivate(final ComponentContext context) {
log.info("Deactivate ...");
// cfgService.unregisterProperties(getClass(), false);
log.info("Stopped");
}
@Modified
public boolean modified(final ComponentContext context) {
log.info("context={}", context);
if (context == null) {
log.info("No configuration file");
return false;
}
final Dictionary<?, ?> properties = context.getProperties();
final String ipaddresses = get(properties, "fmDevices");
log.info("Settings: devConfigs={}", ipaddresses);
if (!isNullOrEmpty(ipaddresses)) {
discover(ipaddresses);
}
return true;
}
private void discover(final String ipaddresses) {
for (String deviceEntry : ipaddresses.split(",")) {
final DeviceId deviceId = DeviceId.deviceId(deviceEntry);
if (deviceId != null) {
log.info("Device {} needs to have its alarms refreshed!", deviceId);
discoverAlarmsForDevice(deviceId);
}
}
}
}
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