public static IReadOnlyCollection <DateHistogramBucket> GetDateHistogram <T>(this KeyedBucket <T> item,
Expression <Func <T, Object> > fieldGetter)
{
var histogramItem = item.DateHistogram(GetName(fieldGetter));
return(histogramItem.Buckets);
}
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);
}
private ISearchSummaryDocumentDTO GetSearchTypeStatistics(KeyedBucket keyBucket)
{
return(new SearchTypeStatisticsDocumentDTO()
{
Type = GetType(keyBucket.Key),
Count = keyBucket.DocCount.Value
});
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var item = JObject.Load(reader);
var typeToken = item.SelectToken("Data.@type") ?? item.SelectToken("data.@type");
IBucket value = null;
if (typeToken != null)
{
string type = typeToken.Value <string>();
IDictionary <string, IAggregate> aggregations = null;
var aggregationsToken = item.SelectToken("Aggregations") ?? item.SelectToken("aggregations");
aggregations = aggregationsToken?.ToObject <IDictionary <string, IAggregate> >();
switch (type)
{
case "datehistogram":
var timeZoneToken = item.SelectToken("Data.@timezone") ?? item.SelectToken("data.@timezone");
var kind = timeZoneToken != null ? DateTimeKind.Unspecified : DateTimeKind.Utc;
var key = item.SelectToken("Key") ?? item.SelectToken("key");
var date = new DateTime(_epochTicks + ((long)key * TimeSpan.TicksPerMillisecond), kind);
value = new DateHistogramBucket(date, aggregations);
break;
case "range":
value = new RangeBucket(aggregations);
break;
case "string":
value = new KeyedBucket <string>(aggregations);
break;
case "double":
value = new KeyedBucket <double>(aggregations);
break;
case "object":
value = new KeyedBucket <object>(aggregations);
break;
}
}
if (value == null)
{
value = new KeyedBucket <object>();
}
serializer.Populate(item.CreateReader(), value);
return(value);
}
private static void GetDictResult(Dictionary <string, int> dict, KeyedBucket <string> item, string unitArea)
{
int count = 0;
if (dict.TryGetValue(unitArea, out count))
{
dict[unitArea] = count + (int)item.DocCount;
}
else
{
dict.Add(unitArea, (int)item.DocCount);
}
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var item = JObject.Load(reader);
var typeToken = item.SelectToken("Data.@type") ?? item.SelectToken("data.@type");
IBucket value = null;
if (typeToken != null)
{
string type = typeToken.Value <string>();
switch (type)
{
case "datehistogram":
value = new DateHistogramBucket();
break;
case "range":
value = new RangeBucket();
break;
case "string":
value = new KeyedBucket <string>();
break;
case "double":
value = new KeyedBucket <double>();
break;
case "object":
value = new KeyedBucket <object>();
break;
}
}
if (value == null)
{
value = new KeyedBucket <object>();
}
serializer.Populate(item.CreateReader(), value);
return(value);
}
