70 lines
2.0 KiB
Go
70 lines
2.0 KiB
Go
// 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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//go:build !windows
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package main
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import (
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"bytes"
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"io"
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"math"
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"os"
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"path"
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"syscall"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/tsdb"
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)
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func TestTSDBDumpOpenMetricsRoundTripPipe(t *testing.T) {
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initialMetrics, err := os.ReadFile("testdata/dump-openmetrics-roundtrip-test.prom")
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require.NoError(t, err)
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initialMetrics = normalizeNewLine(initialMetrics)
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pipeDir := t.TempDir()
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dbDir := t.TempDir()
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// create pipe
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pipe := path.Join(pipeDir, "pipe")
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err = syscall.Mkfifo(pipe, 0o666)
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require.NoError(t, err)
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go func() {
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// open pipe to write
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in, err := os.OpenFile(pipe, os.O_WRONLY, os.ModeNamedPipe)
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require.NoError(t, err)
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defer func() { require.NoError(t, in.Close()) }()
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_, err = io.Copy(in, bytes.NewReader(initialMetrics))
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require.NoError(t, err)
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}()
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// Import samples from OM format
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code := backfillOpenMetrics(pipe, dbDir, false, false, 2*time.Hour, map[string]string{})
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require.Equal(t, 0, code)
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db, err := tsdb.Open(dbDir, nil, nil, tsdb.DefaultOptions(), nil)
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require.NoError(t, err)
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t.Cleanup(func() {
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require.NoError(t, db.Close())
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})
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// Dump the blocks into OM format
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dumpedMetrics := getDumpedSamples(t, dbDir, "", math.MinInt64, math.MaxInt64, []string{"{__name__=~'(?s:.*)'}"}, formatSeriesSetOpenMetrics)
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// Should get back the initial metrics.
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require.Equal(t, string(initialMetrics), dumpedMetrics)
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}
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