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67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
// Copyright 2017 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 remote
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import (
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"github.com/prometheus/prometheus/pkg/labels"
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"github.com/prometheus/prometheus/storage"
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)
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// Appender implements scrape.Appendable.
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func (s *Storage) Appender() (storage.Appender, error) {
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return ×tampTracker{
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storage: s,
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}, nil
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}
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type timestampTracker struct {
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storage *Storage
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samples int64
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highestTimestamp int64
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}
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// Add implements storage.Appender.
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func (t *timestampTracker) Add(_ labels.Labels, ts int64, v float64) (uint64, error) {
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t.samples++
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if ts > t.highestTimestamp {
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t.highestTimestamp = ts
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}
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return 0, nil
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}
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// AddFast implements storage.Appender.
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func (t *timestampTracker) AddFast(l labels.Labels, _ uint64, ts int64, v float64) error {
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_, err := t.Add(l, ts, v)
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return err
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}
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// Commit implements storage.Appender.
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func (t *timestampTracker) Commit() error {
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t.storage.samplesIn.incr(t.samples)
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t.storage.samplesInMetric.Add(float64(t.samples))
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t.storage.highestTimestampMtx.Lock()
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defer t.storage.highestTimestampMtx.Unlock()
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if t.highestTimestamp > t.storage.highestTimestamp {
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t.storage.highestTimestamp = t.highestTimestamp
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t.storage.highestTimestampMetric.Set(float64(t.highestTimestamp) / 1000.)
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}
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return nil
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}
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// Rollback implements storage.Appender.
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func (*timestampTracker) Rollback() error {
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return nil
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}
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