public async Task TableRead_ManyRows_Succeeds()
{
var monitor1 = new TestScaleMonitor1();
var monitors = new IScaleMonitor[] { monitor1 };
var metricsTable = _repository.GetMetricsTable();
await _repository.CreateIfNotExistsAsync(metricsTable);
TableBatchOperation batch = new TableBatchOperation();
int numRows = 500;
for (int i = 0; i < numRows; i++)
{
var sample = new TestScaleMetrics1 {
Count = i
};
await Task.Delay(5);
batch.Add(TableStorageScaleMetricsRepository.CreateMetricsInsertOperation(sample, TestHostId, monitor1.Descriptor));
if (batch.Count % 100 == 0)
{
await metricsTable.ExecuteBatchAsync(batch);
batch = new TableBatchOperation();
}
}
if (batch.Count > 0)
{
await metricsTable.ExecuteBatchAsync(batch);
}
var results = await _repository.ReadMetricsAsync(monitors);
Assert.Equal(1, results.Count);
Assert.Equal(numRows, results[monitor1].Count);
// verify results are returned in the order they were inserted (ascending
// time order) and the timestamps are monotonically increasing
var metrics = results[monitor1].ToArray();
for (int i = 0; i < numRows - 1; i++)
{
for (int j = i + 1; j < numRows; j++)
{
var m1 = (TestScaleMetrics1)metrics[i];
var m2 = (TestScaleMetrics1)metrics[j];
Assert.True(m1.Count < m2.Count);
Assert.True(metrics[i].Timestamp < metrics[j].Timestamp);
}
}
}
public async Task ReadMetricsAsync_FiltersExpiredMetrics()
{
var monitor1 = new TestScaleMonitor1();
var monitors = new IScaleMonitor[] { monitor1 };
// add a bunch of expired samples
var batch = new TableBatchOperation();
for (int i = 5; i > 0; i--)
{
var metrics = new TestScaleMetrics1
{
Count = i
};
var now = DateTime.UtcNow - _scaleOptions.ScaleMetricsMaxAge - TimeSpan.FromMinutes(i);
await _repository.AccumulateMetricsBatchAsync(batch, monitor1, new ScaleMetrics[] { metrics }, now);
}
// add a few samples that aren't expired
for (int i = 3; i > 0; i--)
{
var metrics = new TestScaleMetrics1
{
Count = 77
};
var now = DateTime.UtcNow - TimeSpan.FromSeconds(i);
await _repository.AccumulateMetricsBatchAsync(batch, monitor1, new ScaleMetrics[] { metrics }, now);
}
await _repository.ExecuteBatchSafeAsync(batch);
var result = await _repository.ReadMetricsAsync(monitors);
var resultMetrics = result[monitor1].Cast <TestScaleMetrics1>().ToArray();
Assert.Equal(3, resultMetrics.Length);
Assert.All(resultMetrics, p => Assert.Equal(77, p.Count));
}
