public override Task <ListAlarmChangesResponse> ListAlarmChanges(
ListAlarmChangesRequest request,
ServerCallContext context)
{
string id = BitConverter.ToString(request.DeviceId.ToByteArray());
DateTimeOffset endDateTime;
if (string.IsNullOrEmpty(request.PageToken))
{
endDateTime = request.EndTime?.ToDateTimeOffset() ?? DateTimeOffset.UtcNow;
}
else
{
endDateTime = DateTimeOffset.Parse(request.PageToken, CultureInfo.InvariantCulture);
}
endDateTime = endDateTime.ToUniversalTime();
DateTimeOffset?startDateTime = request.StartTime?.ToDateTimeOffset().ToUniversalTime();
var response = new ListAlarmChangesResponse();
using (BjdireContext db = this.serviceProvider.GetRequiredService <BjdireContext>())
{
var alarmChanges = (from m in db.AlarmChanges
where m.DeviceId == id &&
(startDateTime == null || startDateTime <= m.Timestamp) &&
m.Timestamp <= endDateTime
orderby m.Timestamp descending
select m)
.Take(request.PageSize)
.ToList();
response.AlarmChanges.AddRange(alarmChanges.Select(alarmChange =>
{
var m = new GrpcAlarmChange();
m.AssignFrom(alarmChange);
return(m);
}));
if (alarmChanges.Count == request.PageSize && alarmChanges.Last().Timestamp > startDateTime)
{
response.NextPageToken = alarmChanges.Last().Timestamp
.ToUniversalTime()
.ToString(CultureInfo.InvariantCulture);
}
}
return(Task.FromResult(response));
}
public override AsyncUnaryCall <ListAlarmChangesResponse> ListAlarmChangesAsync(ListAlarmChangesRequest request, Metadata headers = null, DateTime?deadline = null, CancellationToken cancellationToken = default)
{
DateTimeOffset endDateTime;
if (string.IsNullOrEmpty(request.PageToken))
{
endDateTime = request.EndTime?.ToDateTimeOffset() ?? DateTimeOffset.UtcNow;
}
else
{
endDateTime = DateTimeOffset.Parse(request.PageToken, CultureInfo.InvariantCulture);
}
endDateTime = endDateTime.ToUniversalTime();
var startDateTime = request.StartTime?.ToDateTime();
var alarmChanges = new List <AlarmChange>(request.PageSize);
for (int i = 0; i < request.PageSize; i++)
{
endDateTime = endDateTime.Subtract(TimeSpan.FromSeconds(5));
if (startDateTime.HasValue && startDateTime > endDateTime)
{
break;
}
alarmChanges.Add(new AlarmChange
{
CreateTime = Timestamp.FromDateTimeOffset(endDateTime),
AlarmType = (AlarmType)RandomUtils.Next(1, 7),
AlarmChangeDirection = (AlarmChangeDirection)RandomUtils.Next(1, 3),
});
}
var response = new ListAlarmChangesResponse
{
NextPageToken = endDateTime.ToUniversalTime().ToString(CultureInfo.InvariantCulture),
};
response.AlarmChanges.AddRange(alarmChanges);
return(TestCalls.AsyncUnaryCall(
Task.FromResult(response),
Task.FromResult(new Metadata()),
() => Status.DefaultSuccess,
() => new Metadata(),
() => { }));
}