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121 lines
3.4 KiB
121 lines
3.4 KiB
// Copyright 2018 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 tsdb |
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import ( |
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"os" |
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"path/filepath" |
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"testing" |
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"github.com/stretchr/testify/require" |
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"github.com/prometheus/prometheus/model/labels" |
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"github.com/prometheus/prometheus/tsdb/chunks" |
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"github.com/prometheus/prometheus/tsdb/fileutil" |
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"github.com/prometheus/prometheus/tsdb/index" |
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) |
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func TestRepairBadIndexVersion(t *testing.T) { |
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tmpDir := t.TempDir() |
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// The broken index used in this test was written by the following script |
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// at a broken revision. |
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// |
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// func main() { |
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// w, err := index.NewWriter(indexFilename) |
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// if err != nil { |
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// panic(err) |
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// } |
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// err = w.AddSymbols(map[string]struct{}{ |
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// "a": struct{}{}, |
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// "b": struct{}{}, |
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// "1": struct{}{}, |
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// "2": struct{}{}, |
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// }) |
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// if err != nil { |
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// panic(err) |
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// } |
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// err = w.AddSeries(1, labels.FromStrings("a", "1", "b", "1")) |
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// if err != nil { |
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// panic(err) |
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// } |
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// err = w.AddSeries(2, labels.FromStrings("a", "2", "b", "1")) |
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// if err != nil { |
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// panic(err) |
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// } |
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// err = w.WritePostings("b", "1", index.NewListPostings([]uint64{1, 2})) |
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// if err != nil { |
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// panic(err) |
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// } |
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// if err := w.Close(); err != nil { |
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// panic(err) |
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// } |
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// } |
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tmpDbDir := filepath.Join(tmpDir, "01BZJ9WJQPWHGNC2W4J9TA62KC") |
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// Create a copy DB to run test against. |
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require.NoError(t, fileutil.CopyDirs(filepath.Join("testdata", "repair_index_version", "01BZJ9WJQPWHGNC2W4J9TA62KC"), tmpDbDir)) |
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// Check the current db. |
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// In its current state, lookups should fail with the fixed code. |
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_, _, err := readMetaFile(tmpDbDir) |
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require.Error(t, err) |
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// Touch chunks dir in block to imitate them. |
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require.NoError(t, os.MkdirAll(filepath.Join(tmpDbDir, "chunks"), 0o777)) |
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// Read current index to check integrity. |
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r, err := index.NewFileReader(filepath.Join(tmpDbDir, indexFilename)) |
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require.NoError(t, err) |
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p, err := r.Postings("b", "1") |
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require.NoError(t, err) |
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var builder labels.ScratchBuilder |
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for p.Next() { |
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t.Logf("next ID %d", p.At()) |
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require.Error(t, r.Series(p.At(), &builder, nil)) |
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} |
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require.NoError(t, p.Err()) |
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require.NoError(t, r.Close()) |
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// On DB opening all blocks in the base dir should be repaired. |
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db, err := Open(tmpDir, nil, nil, nil, nil) |
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require.NoError(t, err) |
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db.Close() |
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r, err = index.NewFileReader(filepath.Join(tmpDbDir, indexFilename)) |
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require.NoError(t, err) |
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defer r.Close() |
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p, err = r.Postings("b", "1") |
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require.NoError(t, err) |
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res := []labels.Labels{} |
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for p.Next() { |
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t.Logf("next ID %d", p.At()) |
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var chks []chunks.Meta |
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require.NoError(t, r.Series(p.At(), &builder, &chks)) |
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res = append(res, builder.Labels()) |
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} |
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require.NoError(t, p.Err()) |
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require.Equal(t, []labels.Labels{ |
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labels.FromStrings("a", "1", "b", "1"), |
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labels.FromStrings("a", "2", "b", "1"), |
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}, res) |
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meta, _, err := readMetaFile(tmpDbDir) |
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require.NoError(t, err) |
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require.Equal(t, metaVersion1, meta.Version, "unexpected meta version %d", meta.Version) |
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}
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