mirror of https://github.com/prometheus/prometheus
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.4 KiB
90 lines
2.4 KiB
// 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, chunkDir string, logger log.Logger) (*Head, error) { |
|
head, err := NewHead(nil, logger, nil, chunkRange, chunkDir, nil, DefaultStripeSize, nil) |
|
|
|
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 |
|
} |
|
chunkDir := filepath.Join(dir, "chunks_tmp") |
|
defer func() { |
|
os.RemoveAll(chunkDir) |
|
}() |
|
head, err := CreateHead(samples, chunkRange, chunkDir, logger) |
|
if err != nil { |
|
return "", err |
|
} |
|
defer head.Close() |
|
|
|
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 |
|
}
|
|
|