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Export TSDB status structs (#10783)

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We would like to implement the tsdb/status API in certain Thanos
components.

In order to match the Prometheus API and avoid duplicating code,
this commit makes the structs used in the status API public.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
This commit is contained in:
Filip Petkovski 2022-06-07 17:13:21 +02:00 committed by GitHub
parent 2e2c014d52
commit a56731126d
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 19 additions and 18 deletions
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37
web/api/v1/api.go
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@ -1317,8 +1317,8 @@ func (api *API) serveFlags(_ *http.Request) apiFuncResult {
return apiFuncResult{api.flagsMap, nil, nil, nil} return apiFuncResult{api.flagsMap, nil, nil, nil}
} }
// stat holds the information about individual cardinality. // TSDBStat holds the information about individual cardinality.
type stat struct { type TSDBStat struct {
Name string `json:"name"` Name string `json:"name"`
Value uint64 `json:"value"` Value uint64 `json:"value"`
} }
@ -1332,26 +1332,27 @@ type HeadStats struct {
MaxTime int64 `json:"maxTime"` MaxTime int64 `json:"maxTime"`
} }
// tsdbStatus has information of cardinality statistics from postings. // TSDBStatus has information of cardinality statistics from postings.
type tsdbStatus struct { type TSDBStatus struct {
HeadStats HeadStats `json:"headStats"` HeadStats HeadStats `json:"headStats"`
SeriesCountByMetricName []stat `json:"seriesCountByMetricName"` SeriesCountByMetricName []TSDBStat `json:"seriesCountByMetricName"`
LabelValueCountByLabelName []stat `json:"labelValueCountByLabelName"` LabelValueCountByLabelName []TSDBStat `json:"labelValueCountByLabelName"`
MemoryInBytesByLabelName []stat `json:"memoryInBytesByLabelName"` MemoryInBytesByLabelName []TSDBStat `json:"memoryInBytesByLabelName"`
SeriesCountByLabelValuePair []stat `json:"seriesCountByLabelValuePair"` SeriesCountByLabelValuePair []TSDBStat `json:"seriesCountByLabelValuePair"`
} }
func convertStats(stats []index.Stat) []stat { // TSDBStatsFromIndexStats converts a index.Stat slice to a TSDBStat slice.
result := make([]stat, 0, len(stats)) func TSDBStatsFromIndexStats(stats []index.Stat) []TSDBStat {
result := make([]TSDBStat, 0, len(stats))
for _, item := range stats { for _, item := range stats {
item := stat{Name: item.Name, Value: item.Count} item := TSDBStat{Name: item.Name, Value: item.Count}
result = append(result, item) result = append(result, item)
} }
return result return result
} }
func (api *API) serveTSDBStatus(*http.Request) apiFuncResult { func (api *API) serveTSDBStatus(*http.Request) apiFuncResult {
s, err := api.db.Stats("__name__") s, err := api.db.Stats(labels.MetricName)
if err != nil { if err != nil {
return apiFuncResult{nil, &apiError{errorInternal, err}, nil, nil} return apiFuncResult{nil, &apiError{errorInternal, err}, nil, nil}
} }
@ -1369,7 +1370,7 @@ func (api *API) serveTSDBStatus(*http.Request) apiFuncResult {
} }
} }
} }
return apiFuncResult{tsdbStatus{ return apiFuncResult{TSDBStatus{
HeadStats: HeadStats{ HeadStats: HeadStats{
NumSeries: s.NumSeries, NumSeries: s.NumSeries,
ChunkCount: chunkCount, ChunkCount: chunkCount,
@ -1377,10 +1378,10 @@ func (api *API) serveTSDBStatus(*http.Request) apiFuncResult {
MaxTime: s.MaxTime, MaxTime: s.MaxTime,
NumLabelPairs: s.IndexPostingStats.NumLabelPairs, NumLabelPairs: s.IndexPostingStats.NumLabelPairs,
}, },
SeriesCountByMetricName: convertStats(s.IndexPostingStats.CardinalityMetricsStats), SeriesCountByMetricName: TSDBStatsFromIndexStats(s.IndexPostingStats.CardinalityMetricsStats),
LabelValueCountByLabelName: convertStats(s.IndexPostingStats.CardinalityLabelStats), LabelValueCountByLabelName: TSDBStatsFromIndexStats(s.IndexPostingStats.CardinalityLabelStats),
MemoryInBytesByLabelName: convertStats(s.IndexPostingStats.LabelValueStats), MemoryInBytesByLabelName: TSDBStatsFromIndexStats(s.IndexPostingStats.LabelValueStats),
SeriesCountByLabelValuePair: convertStats(s.IndexPostingStats.LabelValuePairsStats), SeriesCountByLabelValuePair: TSDBStatsFromIndexStats(s.IndexPostingStats.LabelValuePairsStats),
}, nil, nil, nil} }, nil, nil, nil}
} }