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stats.go
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stats.go
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// SPDX-License-Identifier: AGPL-3.0-only
// Provenance-includes-location: https://github.com/cortexproject/cortex/blob/master/pkg/querier/stats/stats.go
// Provenance-includes-license: Apache-2.0
// Provenance-includes-copyright: The Cortex Authors.
package stats
import (
"context"
"sync/atomic" //lint:ignore faillint we can't use go.uber.org/atomic with a protobuf struct without wrapping it.
"time"
"github.com/grafana/pyroscope/pkg/util/httpgrpc"
)
type contextKey int
var ctxKey = contextKey(0)
// ContextWithEmptyStats returns a context with empty stats.
func ContextWithEmptyStats(ctx context.Context) (*Stats, context.Context) {
stats := &Stats{}
ctx = context.WithValue(ctx, ctxKey, stats)
return stats, ctx
}
// FromContext gets the Stats out of the Context. Returns nil if stats have not
// been initialised in the context.
func FromContext(ctx context.Context) *Stats {
o := ctx.Value(ctxKey)
if o == nil {
return nil
}
return o.(*Stats)
}
// IsEnabled returns whether stats tracking is enabled in the context.
func IsEnabled(ctx context.Context) bool {
// When query statistics are enabled, the stats object is already initialised
// within the context, so we can just check it.
return FromContext(ctx) != nil
}
// AddWallTime adds some time to the counter.
func (s *Stats) AddWallTime(t time.Duration) {
if s == nil {
return
}
atomic.AddInt64(&s.WallTime, int64(t))
}
// LoadWallTime returns current wall time.
func (s *Stats) LoadWallTime() time.Duration {
if s == nil {
return 0
}
return time.Duration(atomic.LoadInt64((&s.WallTime)))
}
func (s *Stats) AddFetchedSeries(series uint64) {
if s == nil {
return
}
atomic.AddUint64(&s.FetchedSeriesCount, series)
}
func (s *Stats) LoadFetchedSeries() uint64 {
if s == nil {
return 0
}
return atomic.LoadUint64(&s.FetchedSeriesCount)
}
func (s *Stats) AddFetchedChunkBytes(bytes uint64) {
if s == nil {
return
}
atomic.AddUint64(&s.FetchedChunkBytes, bytes)
}
func (s *Stats) LoadFetchedChunkBytes() uint64 {
if s == nil {
return 0
}
return atomic.LoadUint64(&s.FetchedChunkBytes)
}
func (s *Stats) AddFetchedChunks(chunks uint64) {
if s == nil {
return
}
atomic.AddUint64(&s.FetchedChunksCount, chunks)
}
func (s *Stats) LoadFetchedChunks() uint64 {
if s == nil {
return 0
}
return atomic.LoadUint64(&s.FetchedChunksCount)
}
func (s *Stats) AddFetchedIndexBytes(indexBytes uint64) {
if s == nil {
return
}
atomic.AddUint64(&s.FetchedIndexBytes, indexBytes)
}
func (s *Stats) LoadFetchedIndexBytes() uint64 {
if s == nil {
return 0
}
return atomic.LoadUint64(&s.FetchedIndexBytes)
}
func (s *Stats) AddShardedQueries(num uint32) {
if s == nil {
return
}
atomic.AddUint32(&s.ShardedQueries, num)
}
func (s *Stats) LoadShardedQueries() uint32 {
if s == nil {
return 0
}
return atomic.LoadUint32(&s.ShardedQueries)
}
func (s *Stats) AddSplitQueries(num uint32) {
if s == nil {
return
}
atomic.AddUint32(&s.SplitQueries, num)
}
func (s *Stats) LoadSplitQueries() uint32 {
if s == nil {
return 0
}
return atomic.LoadUint32(&s.SplitQueries)
}
// Merge the provided Stats into this one.
func (s *Stats) Merge(other *Stats) {
if s == nil || other == nil {
return
}
s.AddWallTime(other.LoadWallTime())
s.AddFetchedSeries(other.LoadFetchedSeries())
s.AddFetchedChunkBytes(other.LoadFetchedChunkBytes())
s.AddFetchedChunks(other.LoadFetchedChunks())
s.AddShardedQueries(other.LoadShardedQueries())
s.AddSplitQueries(other.LoadSplitQueries())
s.AddFetchedIndexBytes(other.LoadFetchedIndexBytes())
}
func ShouldTrackHTTPGRPCResponse(r *httpgrpc.HTTPResponse) bool {
// Do no track statistics for requests failed because of a server error.
return r.Code < 500
}