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Fix histogram chart calculation #1968

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Merged
merged 4 commits into from
Jan 30, 2024
Merged

Fix histogram chart calculation #1968

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ffdf7c4
Fix histogram chart calculation
JamesNK Jan 30, 2024
fd75b23
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JamesNK Jan 30, 2024
a80e99f
Update src/Aspire.Dashboard/Components/Controls/ChartContainer.razor.cs
JamesNK Jan 30, 2024
b5273f2
Update src/Aspire.Dashboard/Components/Controls/ChartContainer.razor.cs
JamesNK Jan 30, 2024
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9 changes: 7 additions & 2 deletions src/Aspire.Dashboard/Components/Controls/ChartContainer.razor.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -170,13 +170,18 @@ protected override async Task OnParametersSetAsync()

private OtlpInstrument? GetInstrument()
{
var endDate = DateTime.UtcNow;
// Get more data than is being displayed. Histogram graph uses some historical data to calculate bucket counts.
// It's ok to get more data than is needed here. An additional date filter is applied when building chart values.
var startDate = endDate.Subtract(Duration + TimeSpan.FromSeconds(30));

var instrument = TelemetryRepository.GetInstrument(new GetInstrumentRequest
{
ApplicationServiceId = ApplicationId,
MeterName = MeterName,
InstrumentName = InstrumentName,
StartTime = DateTime.UtcNow.Subtract(Duration),
EndTime = DateTime.UtcNow,
StartTime = startDate,
EndTime = endDate,
});

if (instrument == null)
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