public Alarm GetLatestAlarmByType(string deviceId, Alarm.Type type, Alarm.Gravity?gravity)
{
IEnumerable <BsonDocument> pipeline = GetPipeline(deviceId, type, gravity);
PipelineDefinition <Site, BsonDocument> pipelineDefinition = PipelineDefinition <Site, BsonDocument> .Create(pipeline);
return(BsonIterator.Iterate(collection, pipelineDefinition, (BsonDocument e, Alarm item) => BsonSerializer.Deserialize <SingleBsonItem <Alarm> >(e).Item));
}
private IEnumerable <BsonDocument> GetPipeline(string deviceId, Alarm.Type type, Alarm.Gravity?gravity)
{
IList <BsonDocument> pipeline = new List <BsonDocument>();
BsonDocument unwindDeviceStage = new BsonDocument("$unwind", "$Devices");
pipeline.Add(unwindDeviceStage);
BsonDocument projectDevicesStage = new BsonDocument("$project", new BsonDocument
{
{ "_id", 0 },
{ "Device", "$Devices" }
});
pipeline.Add(projectDevicesStage);
BsonDocument matchDeviceStage = new BsonDocument("$match", new BsonDocument("Device.Id", deviceId));
pipeline.Add(matchDeviceStage);
BsonDocument unwindAlarmsStage = new BsonDocument("$unwind", "$Device.Alarms");
pipeline.Add(unwindAlarmsStage);
BsonDocument projectAlarmsStage = new BsonDocument("$project", new BsonDocument
{
{ "_id", 0 },
{ "Item", "$Device.Alarms" }
});
pipeline.Add(projectAlarmsStage);
BsonDocument matchAlarmStage = new BsonDocument("$match", new BsonDocument
{
{ "Item.IsActive", true },
{ "Item.AlarmType", type }
});
pipeline.Add(matchAlarmStage);
if (gravity.HasValue)
{
BsonDocument matchGravityStage = new BsonDocument("$match", new BsonDocument
{
{ "Item.AlarmGravity", gravity.Value }
});
pipeline.Add(matchGravityStage);
}
return(pipeline);
}
private void CreateAlarm(string deviceId, string siteId, Alarm.Type alarmType, Alarm.AlarmSubtype subtype, Alarm.Gravity alarmGravity, string shortDescription, string description)
{
Alarm alarm = new Alarm()
{
Id = $"{deviceId}-{DateTime.UtcNow.ToString("yyyyMMddHHmmss")}",
DeviceId = deviceId,
SiteId = siteId,
IsActive = true,
AlarmType = alarmType,
AlarmGravity = alarmGravity,
OccuredAt = DateTime.UtcNow,
ShortDescription = shortDescription,
Description = description,
Subtype = subtype
};
deviceRepository.AddAlarm(deviceId, alarm);
}
public Alarm CreateAlarm(string deviceId, string siteId, Alarm.Type alarmType, Alarm.Gravity alarmGravity, string shortDescription, string description, DateTime?start, DateTime?end)
{
Alarm alarm = new Alarm()
{
Id = $"{deviceId}-alarm{DateTime.UtcNow.ToString("yyyyMMddHHmmss")}",
DeviceId = deviceId,
SiteId = siteId,
IsActive = true,
AlarmType = alarmType,
AlarmGravity = alarmGravity,
OccuredAt = DateTime.UtcNow,
ShortDescription = shortDescription,
Description = description,
Start = start,
End = end
};
deviceRepository.AddAlarm(deviceId, alarm);
return(alarm);
}
