mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-27 06:29:42 -08:00
096fa0f8b2
- Staleness delta is no a proper function parameter and not replicated from package ast. - Named type 'chunks' replaced by explicit '[]chunk' to avoid confusion. - For the same reason, replaced 'chunkDescs' by '[]*chunkDescs'. - Verified that math.Modf is not a speed enhancement over conversion (actually 5x slower). - Renamed firstTimeField, lastTimeField into chunkFirstTime and chunkLastTime. - Verified unpin() is sufficiently goroutine-safe. - Decided not to update archivedFingerprintToTimeRange upon series truncation and added a rationale why. Change-Id: I863b8d785e5ad9f71eb63e229845eacf1bed8534
110 lines
3.2 KiB
Go
110 lines
3.2 KiB
Go
// Copyright 2014 Prometheus Team
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package local
|
|
|
|
import (
|
|
"time"
|
|
|
|
clientmodel "github.com/prometheus/client_golang/model"
|
|
)
|
|
|
|
// memorySeriesPreloader is a Preloader for the memorySeriesStorage.
|
|
type memorySeriesPreloader struct {
|
|
storage *memorySeriesStorage
|
|
pinnedChunkDescs []*chunkDesc
|
|
}
|
|
|
|
// PreloadRange implements Preloader.
|
|
func (p *memorySeriesPreloader) PreloadRange(
|
|
fp clientmodel.Fingerprint,
|
|
from clientmodel.Timestamp, through clientmodel.Timestamp,
|
|
stalenessDelta time.Duration,
|
|
) error {
|
|
cds, err := p.storage.preloadChunksForRange(fp, from, through, stalenessDelta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
|
|
return nil
|
|
}
|
|
|
|
/*
|
|
// GetMetricAtTime implements Preloader.
|
|
func (p *memorySeriesPreloader) GetMetricAtTime(fp clientmodel.Fingerprint, t clientmodel.Timestamp) error {
|
|
cds, err := p.storage.preloadChunks(fp, &timeSelector{
|
|
from: t,
|
|
through: t,
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
|
|
return nil
|
|
}
|
|
|
|
// GetMetricAtInterval implements Preloader.
|
|
func (p *memorySeriesPreloader) GetMetricAtInterval(fp clientmodel.Fingerprint, from, through clientmodel.Timestamp, interval time.Duration) error {
|
|
cds, err := p.storage.preloadChunks(fp, &timeSelector{
|
|
from: from,
|
|
through: through,
|
|
interval: interval,
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
|
|
return
|
|
}
|
|
|
|
// GetMetricRange implements Preloader.
|
|
func (p *memorySeriesPreloader) GetMetricRange(fp clientmodel.Fingerprint, t clientmodel.Timestamp, rangeDuration time.Duration) error {
|
|
cds, err := p.storage.preloadChunks(fp, &timeSelector{
|
|
from: t,
|
|
through: t,
|
|
rangeDuration: through.Sub(from),
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
|
|
return
|
|
}
|
|
|
|
// GetMetricRangeAtInterval implements Preloader.
|
|
func (p *memorySeriesPreloader) GetMetricRangeAtInterval(fp clientmodel.Fingerprint, from, through clientmodel.Timestamp, interval, rangeDuration time.Duration) error {
|
|
cds, err := p.storage.preloadChunks(fp, &timeSelector{
|
|
from: from,
|
|
through: through,
|
|
interval: interval,
|
|
rangeDuration: rangeDuration,
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
|
|
return
|
|
}
|
|
*/
|
|
|
|
// Close implements Preloader.
|
|
func (p *memorySeriesPreloader) Close() {
|
|
// TODO: Idea about a primitive but almost free heuristic to not evict
|
|
// "recently used" chunks: Do not unpin the chunks right here, but hand
|
|
// over the pinnedChunkDescs to a manager that will delay the unpinning
|
|
// based on time and memory pressure.
|
|
for _, cd := range p.pinnedChunkDescs {
|
|
cd.unpin()
|
|
}
|
|
}
|