private async Task <FunctionSnapshot[]> GetSnapshotsAsync()
{
if (_snapshots == null)
{
string[] results = await _reader.GetFunctionNamesAsync();
_snapshots = Array.ConvertAll(results, name => new FunctionSnapshot
{
Id = name,
FullName = name,
ShortName = name,
Parameters = new Dictionary <string, ParameterSnapshot>()
});
}
return(_snapshots);
}
public async Task LogExactWriteAndRead()
{
// Make some very precise writes and verify we read exactly what we'd expect.
var table = GetNewLoggingTable();
try
{
ILogWriter writer = LogFactory.NewWriter("c1", table);
ILogReader reader = LogFactory.NewReader(table);
string Func1 = "alpha";
string Func2 = "beta";
var t1a = new DateTime(2010, 3, 6, 10, 11, 20);
var t1b = new DateTime(2010, 3, 6, 10, 11, 21); // same time bucket as t1a
var t2 = new DateTime(2010, 3, 7, 10, 11, 21);
FunctionInstanceLogItem l1 = new FunctionInstanceLogItem
{
FunctionInstanceId = Guid.NewGuid(),
FunctionName = Func1,
StartTime = t1a,
LogOutput = "one"
};
await WriteAsync(writer, l1);
await writer.FlushAsync(); // Multiple flushes; test starting & stopping the backgrounf worker.
FunctionInstanceLogItem l2 = new FunctionInstanceLogItem
{
FunctionInstanceId = Guid.NewGuid(),
FunctionName = Func2,
StartTime = t1b,
LogOutput = "two"
};
await WriteAsync(writer, l2);
FunctionInstanceLogItem l3 = new FunctionInstanceLogItem
{
FunctionInstanceId = Guid.NewGuid(),
FunctionName = Func1,
StartTime = t2,
LogOutput = "three",
ErrorDetails = "this failed"
};
await WriteAsync(writer, l3);
await writer.FlushAsync();
// Now read
string[] functionNames = await reader.GetFunctionNamesAsync();
Array.Sort(functionNames);
Assert.Equal(Func1, functionNames[0]);
Assert.Equal(Func2, functionNames[1]);
// Read Func1
{
var segment1 = await reader.GetAggregateStatsAsync(Func1, DateTime.MinValue, DateTime.MaxValue, null);
Assert.Null(segment1.ContinuationToken);
var stats1 = segment1.Results;
Assert.Equal(2, stats1.Length); // includes t1 and t2
// First bucket has l1, second bucket has l3
Assert.Equal(stats1[0].TotalPass, 1);
Assert.Equal(stats1[0].TotalRun, 1);
Assert.Equal(stats1[0].TotalFail, 0);
Assert.Equal(stats1[1].TotalPass, 0);
Assert.Equal(stats1[1].TotalRun, 1);
Assert.Equal(stats1[1].TotalFail, 1);
// reverse order. So l3 latest function, is listed first.
var recent1 = await GetRecentAsync(reader, Func1);
Assert.Equal(2, recent1.Length);
Assert.Equal(recent1[0].FunctionInstanceId, l3.FunctionInstanceId);
Assert.Equal(recent1[1].FunctionInstanceId, l1.FunctionInstanceId);
}
// Read Func2
{
var segment2 = await reader.GetAggregateStatsAsync(Func2, DateTime.MinValue, DateTime.MaxValue, null);
var stats2 = segment2.Results;
Assert.Equal(1, stats2.Length);
Assert.Equal(stats2[0].TotalPass, 1);
Assert.Equal(stats2[0].TotalRun, 1);
Assert.Equal(stats2[0].TotalFail, 0);
var recent2 = await GetRecentAsync(reader, Func2);
Assert.Equal(1, recent2.Length);
Assert.Equal(recent2[0].FunctionInstanceId, l2.FunctionInstanceId);
}
}
finally
{
// Cleanup
table.DeleteIfExists();
}
}