prometheus/tsdb/blockwriter_test.go

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// Copyright 2020 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"
"math"
"path/filepath"
"testing"
"github.com/go-kit/log"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/tsdb/chunks"
)
func TestBlockWriter(t *testing.T) {
ctx := context.Background()
outputDir := t.TempDir()
w, err := NewBlockWriter(log.NewNopLogger(), outputDir, DefaultBlockDuration)
require.NoError(t, err)
// Add some series.
app := w.Appender(ctx)
ts1, v1 := int64(44), float64(7)
_, err = app.Append(0, labels.FromStrings("a", "b"), ts1, v1)
require.NoError(t, err)
ts2, v2 := int64(55), float64(12)
_, err = app.Append(0, labels.FromStrings("c", "d"), ts2, v2)
require.NoError(t, err)
require.NoError(t, app.Commit())
id, err := w.Flush(ctx)
require.NoError(t, err)
// Confirm the block has the correct data.
blockpath := filepath.Join(outputDir, id.String())
b, err := OpenBlock(nil, blockpath, nil)
require.NoError(t, err)
defer func() { require.NoError(t, b.Close()) }()
q, err := NewBlockQuerier(b, math.MinInt64, math.MaxInt64)
require.NoError(t, err)
series := query(t, q, labels.MustNewMatcher(labels.MatchRegexp, "", ".*"))
sample1 := []chunks.Sample{sample{t: ts1, f: v1}}
sample2 := []chunks.Sample{sample{t: ts2, f: v2}}
expectedSeries := map[string][]chunks.Sample{"{a=\"b\"}": sample1, "{c=\"d\"}": sample2}
require.Equal(t, expectedSeries, series)
require.NoError(t, w.Close())
}