public async Task <IEnumerable <TraceHistogram> > GetTraceHistogram(TraceQuery traceQuery)
{
traceQuery.Ensure();
var index = Indices.Index(_indexManager.CreateTracingIndex());
var query = BuildTracesQuery(traceQuery);
var timeSpan = traceQuery.FinishTimestamp.Value - traceQuery.StartTimestamp.Value;
var histogramAggregationsResult = await _elasticClient.SearchAsync <Span>(s => s.Index(index).Size(0).Query(query).
Aggregations(a =>
a.DateHistogram("data_histogram_startTimestamp", d => d.Field(f => f.StartTimestamp).Interval(DateInterval.Minute).Format("yyyy-MM-dd HH:mm:ss").
Aggregations(sub => sub.Cardinality("cardinality_traceId", c => c.Field(f => f.TraceId))))));
var histogramAggregations = histogramAggregationsResult.Aggregations.FirstOrDefault().Value as BucketAggregate;
if (histogramAggregations == null || histogramAggregations.Items == null || !histogramAggregations.Items.OfType <DateHistogramBucket>().Any())
{
return(new TraceHistogram[0]);
}
var traceHistograms = histogramAggregations.Items.OfType <DateHistogramBucket>().Select(x => new TraceHistogram {
Time = GetHistogramTime((long)x.Key), Count = GetTraceCount(x)
});
return(traceHistograms.OrderBy(x => x.Time).ToList());
}
public async Task <IEnumerable <TraceOperationHistogram> > GetSpanHistogramByOperaionName(TraceQuery traceQuery)
{
traceQuery.Ensure();
var index = Indices.Index(_indexManager.CreateTracingIndex());
var query = BuildTracesQuery(traceQuery);
var histogramAggregationsResult = await _elasticClient.SearchAsync <Span>(s => s.Index(index).Size(0).Query(query)
.Aggregations(agg => agg.Terms("group_by_operationName",
g => g.Script(sc => sc.Source("doc['operationName'].value.toUpperCase()"))
)));
var histogramAggregations = histogramAggregationsResult.Aggregations.FirstOrDefault().Value as BucketAggregate;
if (histogramAggregations == null || histogramAggregations.Items == null)
{
return(new TraceOperationHistogram[0]);
}
var traceHistograms = histogramAggregations.Items
.Select(x =>
{
KeyedBucket <object> bucket = x as KeyedBucket <object>;
return(new TraceOperationHistogram
{
OperationName = bucket.Key.ToString(),
Count = bucket.DocCount.HasValue ? bucket.DocCount.Value : 0
});
})
.OrderByDescending(x => x.Count)
.ToArray();
return(traceHistograms);
}
public async Task <IEnumerable <TraceHistogram> > GetTraceHistogram(TraceQuery traceQuery)
{
traceQuery.Ensure();
var query = _dbContext.Spans.AsQueryable();
if (traceQuery.StartTimestamp != null)
{
query = query.Where(x => x.StartTimestamp >= traceQuery.StartTimestamp);
}
if (traceQuery.FinishTimestamp != null)
{
query = query.Where(x => x.FinishTimestamp <= traceQuery.FinishTimestamp);
}
var queryGroup = query.ToList().GroupBy(x => x.TraceId).ToList();
var histogram = queryGroup.GroupBy(x => x.Min(s => s.StartTimestamp).ToString("yyyy-MM-dd HH:mm")).Select(x => new TraceHistogram {
Count = x.Count(), Time = DateTimeOffset.Parse(x.Key)
});
return(histogram.ToList());
}