private async void AskPersistDeviceMetric(object state)
{
IOptionsSnapshot <CoreOptions> coreOptions =
this.serviceProvider.GetRequiredService <IOptionsSnapshot <CoreOptions> >();
IOptionsSnapshot <DeviceOptions> deviceOptions =
this.serviceProvider.GetRequiredService <IOptionsSnapshot <DeviceOptions> >();
using BjdireContext db = this.serviceProvider.GetRequiredService <BjdireContext>();
foreach (DeviceOptionsEntry d in deviceOptions.Value.Devices)
{
try
{
byte[] id = d.ComputeIdBinary();
if (this.plcManager.PlcDictionary.TryGetValue(ByteString.CopyFrom(id), out PlcClient client))
{
this.logger.LogInformation("Ask metric for {0}({1})", d.Id, d.Name);
GrpcMetric metric = await client
.GetMetricAsync(
new GetMetricRequest(),
DateTime.UtcNow.AddMilliseconds(
coreOptions.Value.DefaultReadTimeoutMillis))
.ConfigureAwait(false);
var m = new ModelMetric
{
DeviceId = BitConverter.ToString(id),
};
metric.AssignTo(m);
db.Metrics.Add(m);
}
else
{
this.logger.LogWarning(
"Failed to ask metric for {0}({1}), currently offline.",
d.Id,
d.Name);
}
}
catch (RpcException e)
{
this.logger.LogWarning(e, "Failed to ask metric for {0}({1})", d.Id, d.Name);
}
}
db.SaveChanges();
}
public override Task <ListMetricsResponse> ListMetrics(ListMetricsRequest 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 ListMetricsResponse();
using (BjdireContext db = this.serviceProvider.GetRequiredService <BjdireContext>())
{
var metrics = (from m in db.Metrics
where m.DeviceId == id &&
(startDateTime == null || startDateTime <= m.Timestamp) &&
m.Timestamp <= endDateTime
orderby m.Timestamp descending
select m)
.Take(request.PageSize)
.ToList();
response.Metrics.AddRange(metrics.Select(metric =>
{
var m = new GrpcMetric();
m.AssignFrom(metric);
return(m);
}));
if (metrics.Count == request.PageSize && metrics.Last().Timestamp > startDateTime)
{
response.NextPageToken = metrics.Last().Timestamp
.ToUniversalTime()
.ToString(CultureInfo.InvariantCulture);
}
}
return(Task.FromResult(response));
}
