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@ -20,8 +20,10 @@ import ( |
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"path/filepath" |
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"sort" |
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"testing" |
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"unsafe" |
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"github.com/pkg/errors" |
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"github.com/prometheus/prometheus/pkg/textparse" |
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"github.com/prometheus/tsdb/chunkenc" |
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"github.com/prometheus/tsdb/chunks" |
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"github.com/prometheus/tsdb/labels" |
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@ -380,3 +382,41 @@ func TestPersistence_index_e2e(t *testing.T) { |
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testutil.Ok(t, ir.Close()) |
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} |
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func readPrometheusLabels(fn string, n int) ([]labels.Labels, error) { |
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f, err := os.Open(fn) |
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if err != nil { |
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return nil, err |
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} |
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defer f.Close() |
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b, err := ioutil.ReadAll(f) |
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if err != nil { |
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return nil, err |
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} |
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p := textparse.New(b) |
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i := 0 |
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var mets []labels.Labels |
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hashes := map[uint64]struct{}{} |
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for p.Next() && i < n { |
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m := make(labels.Labels, 0, 10) |
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p.Metric((*promlabels.Labels)(unsafe.Pointer(&m))) |
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h := m.Hash() |
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if _, ok := hashes[h]; ok { |
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continue |
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} |
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mets = append(mets, m) |
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hashes[h] = struct{}{} |
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i++ |
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} |
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if err := p.Err(); err != nil { |
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return nil, err |
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} |
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if i != n { |
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return mets, errors.Errorf("requested %d metrics but found %d", n, i) |
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} |
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return mets, nil |
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} |
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