mirror of
https://github.com/prometheus/prometheus
synced 2024-12-24 23:42:32 +00:00
85 lines
2.2 KiB
Go
85 lines
2.2 KiB
Go
// Copyright 2019 The Prometheus Authors
|
|
// 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 tsdb
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/prometheus/prometheus/pkg/labels"
|
|
)
|
|
|
|
var ErrInvalidTimes = fmt.Errorf("max time is lesser than min time")
|
|
|
|
type MetricSample struct {
|
|
TimestampMs int64
|
|
Value float64
|
|
Labels labels.Labels
|
|
}
|
|
|
|
// CreateHead creates a TSDB writer head to write the sample data to.
|
|
func CreateHead(samples []*MetricSample, chunkRange int64, logger log.Logger) (*Head, error) {
|
|
head, err := NewHead(nil, logger, nil, chunkRange, DefaultStripeSize)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
app := head.Appender()
|
|
for _, sample := range samples {
|
|
_, err = app.Add(sample.Labels, sample.TimestampMs, sample.Value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
err = app.Commit()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return head, nil
|
|
}
|
|
|
|
// CreateBlock creates a chunkrange block from the samples passed to it, and writes it to disk.
|
|
func CreateBlock(samples []*MetricSample, dir string, mint, maxt int64, logger log.Logger) (string, error) {
|
|
chunkRange := maxt - mint
|
|
if chunkRange == 0 {
|
|
chunkRange = DefaultBlockDuration
|
|
}
|
|
if chunkRange < 0 {
|
|
return "", ErrInvalidTimes
|
|
}
|
|
head, err := CreateHead(samples, chunkRange, logger)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
compactor, err := NewLeveledCompactor(context.Background(), nil, logger, ExponentialBlockRanges(DefaultBlockDuration, 3, 5), nil)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
err = os.MkdirAll(dir, 0777)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
ulid, err := compactor.Write(dir, head, mint, maxt, nil)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return filepath.Join(dir, ulid.String()), nil
|
|
}
|