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62 lines
1.8 KiB
Go
62 lines
1.8 KiB
Go
// Copyright 2014 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package local
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import (
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"time"
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"github.com/prometheus/common/model"
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)
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// memorySeriesPreloader is a Preloader for the memorySeriesStorage.
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type memorySeriesPreloader struct {
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storage *memorySeriesStorage
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pinnedChunkDescs []*chunkDesc
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}
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// PreloadRange implements Preloader.
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func (p *memorySeriesPreloader) PreloadRange(
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fp model.Fingerprint,
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from model.Time, through model.Time,
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) (SeriesIterator, error) {
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cds, iter, err := p.storage.preloadChunksForRange(fp, from, through, false)
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if err != nil {
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return iter, err
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}
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p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
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return iter, nil
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}
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// PreloadInstant implements Preloader
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func (p *memorySeriesPreloader) PreloadInstant(
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fp model.Fingerprint,
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timestamp model.Time, stalenessDelta time.Duration,
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) (SeriesIterator, error) {
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cds, iter, err := p.storage.preloadChunksForRange(fp, timestamp.Add(-stalenessDelta), timestamp, true)
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if err != nil {
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return nil, err
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}
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p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
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return iter, nil
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}
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// Close implements Preloader.
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func (p *memorySeriesPreloader) Close() {
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for _, cd := range p.pinnedChunkDescs {
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cd.unpin(p.storage.evictRequests)
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}
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chunkOps.WithLabelValues(unpin).Add(float64(len(p.pinnedChunkDescs)))
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}
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