prometheus/util/teststorage/storage.go
beorn7 c954cd9d1d Move packages out of deprecated pkg directory
This creates a new `model` directory and moves all data-model related
packages over there:
  exemplar labels relabel rulefmt textparse timestamp value

All the others are more or less utilities and have been moved to `util`:
  gate logging modetimevfs pool runtime

Signed-off-by: beorn7 <beorn@grafana.com>
2021-11-09 08:03:10 +01:00

76 lines
2.4 KiB
Go

// Copyright 2017 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 teststorage
import (
"io/ioutil"
"os"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/model/exemplar"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/storage"
"github.com/prometheus/prometheus/tsdb"
"github.com/prometheus/prometheus/util/testutil"
)
// New returns a new TestStorage for testing purposes
// that removes all associated files on closing.
func New(t testutil.T) *TestStorage {
dir, err := ioutil.TempDir("", "test_storage")
require.NoError(t, err, "unexpected error while opening test directory")
// Tests just load data for a series sequentially. Thus we
// need a long appendable window.
opts := tsdb.DefaultOptions()
opts.MinBlockDuration = int64(24 * time.Hour / time.Millisecond)
opts.MaxBlockDuration = int64(24 * time.Hour / time.Millisecond)
db, err := tsdb.Open(dir, nil, nil, opts, tsdb.NewDBStats())
require.NoError(t, err, "unexpected error while opening test storage")
reg := prometheus.NewRegistry()
eMetrics := tsdb.NewExemplarMetrics(reg)
es, err := tsdb.NewCircularExemplarStorage(10, eMetrics)
require.NoError(t, err, "unexpected error while opening test exemplar storage")
return &TestStorage{DB: db, exemplarStorage: es, dir: dir}
}
type TestStorage struct {
*tsdb.DB
exemplarStorage tsdb.ExemplarStorage
dir string
}
func (s TestStorage) Close() error {
if err := s.DB.Close(); err != nil {
return err
}
return os.RemoveAll(s.dir)
}
func (s TestStorage) ExemplarAppender() storage.ExemplarAppender {
return s
}
func (s TestStorage) ExemplarQueryable() storage.ExemplarQueryable {
return s.exemplarStorage
}
func (s TestStorage) AppendExemplar(ref storage.SeriesRef, l labels.Labels, e exemplar.Exemplar) (storage.SeriesRef, error) {
return ref, s.exemplarStorage.AddExemplar(l, e)
}