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91 lines
2.7 KiB
91 lines
2.7 KiB
// 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 teststorage |
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import ( |
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"fmt" |
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"os" |
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"time" |
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"github.com/prometheus/client_golang/prometheus" |
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"github.com/stretchr/testify/require" |
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"github.com/prometheus/prometheus/model/exemplar" |
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"github.com/prometheus/prometheus/model/labels" |
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"github.com/prometheus/prometheus/storage" |
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"github.com/prometheus/prometheus/tsdb" |
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"github.com/prometheus/prometheus/util/testutil" |
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) |
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// New returns a new TestStorage for testing purposes |
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// that removes all associated files on closing. |
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func New(t testutil.T) *TestStorage { |
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stor, err := NewWithError() |
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require.NoError(t, err) |
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return stor |
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} |
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// NewWithError returns a new TestStorage for user facing tests, which reports |
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// errors directly. |
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func NewWithError() (*TestStorage, error) { |
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dir, err := os.MkdirTemp("", "test_storage") |
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if err != nil { |
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return nil, fmt.Errorf("opening test directory: %w", err) |
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} |
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// Tests just load data for a series sequentially. Thus we |
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// need a long appendable window. |
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opts := tsdb.DefaultOptions() |
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opts.MinBlockDuration = int64(24 * time.Hour / time.Millisecond) |
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opts.MaxBlockDuration = int64(24 * time.Hour / time.Millisecond) |
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opts.RetentionDuration = 0 |
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opts.EnableNativeHistograms = true |
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db, err := tsdb.Open(dir, nil, nil, opts, tsdb.NewDBStats()) |
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if err != nil { |
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return nil, fmt.Errorf("opening test storage: %w", err) |
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} |
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reg := prometheus.NewRegistry() |
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eMetrics := tsdb.NewExemplarMetrics(reg) |
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es, err := tsdb.NewCircularExemplarStorage(10, eMetrics) |
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if err != nil { |
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return nil, fmt.Errorf("opening test exemplar storage: %w", err) |
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} |
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return &TestStorage{DB: db, exemplarStorage: es, dir: dir}, nil |
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} |
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type TestStorage struct { |
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*tsdb.DB |
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exemplarStorage tsdb.ExemplarStorage |
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dir string |
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} |
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func (s TestStorage) Close() error { |
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if err := s.DB.Close(); err != nil { |
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return err |
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} |
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return os.RemoveAll(s.dir) |
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} |
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func (s TestStorage) ExemplarAppender() storage.ExemplarAppender { |
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return s |
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} |
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func (s TestStorage) ExemplarQueryable() storage.ExemplarQueryable { |
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return s.exemplarStorage |
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} |
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func (s TestStorage) AppendExemplar(ref storage.SeriesRef, l labels.Labels, e exemplar.Exemplar) (storage.SeriesRef, error) { |
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return ref, s.exemplarStorage.AddExemplar(l, e) |
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}
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