656 lines
18 KiB
Go
656 lines
18 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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package textparse
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import (
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"bytes"
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"errors"
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"io"
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"os"
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"testing"
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"github.com/klauspost/compress/gzip"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/common/expfmt"
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"github.com/prometheus/common/model"
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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/util/testutil"
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)
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type expectedParse struct {
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lset labels.Labels
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m string
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t *int64
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v float64
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typ model.MetricType
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help string
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unit string
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comment string
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e *exemplar.Exemplar
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}
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func TestPromParse(t *testing.T) {
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input := `# HELP go_gc_duration_seconds A summary of the GC invocation durations.
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# TYPE go_gc_duration_seconds summary
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go_gc_duration_seconds{quantile="0"} 4.9351e-05
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go_gc_duration_seconds{quantile="0.25",} 7.424100000000001e-05
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go_gc_duration_seconds{quantile="0.5",a="b"} 8.3835e-05
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go_gc_duration_seconds{quantile="0.8", a="b"} 8.3835e-05
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go_gc_duration_seconds{ quantile="0.9", a="b"} 8.3835e-05
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# Hrandom comment starting with prefix of HELP
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#
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wind_speed{A="2",c="3"} 12345
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# comment with escaped \n newline
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# comment with escaped \ escape character
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# HELP nohelp1
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# HELP nohelp2
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go_gc_duration_seconds{ quantile="1.0", a="b" } 8.3835e-05
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go_gc_duration_seconds { quantile="1.0", a="b" } 8.3835e-05
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go_gc_duration_seconds { quantile= "1.0", a= "b", } 8.3835e-05
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go_gc_duration_seconds { quantile = "1.0", a = "b" } 8.3835e-05
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go_gc_duration_seconds { quantile = "2.0" a = "b" } 8.3835e-05
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go_gc_duration_seconds_count 99
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some:aggregate:rate5m{a_b="c"} 1
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# HELP go_goroutines Number of goroutines that currently exist.
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# TYPE go_goroutines gauge
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go_goroutines 33 123123
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_metric_starting_with_underscore 1
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testmetric{_label_starting_with_underscore="foo"} 1
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testmetric{label="\"bar\""} 1`
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input += "\n# HELP metric foo\x00bar"
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input += "\nnull_byte_metric{a=\"abc\x00\"} 1"
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int64p := func(x int64) *int64 { return &x }
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exp := []expectedParse{
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{
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m: "go_gc_duration_seconds",
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help: "A summary of the GC invocation durations.",
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}, {
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m: "go_gc_duration_seconds",
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typ: model.MetricTypeSummary,
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}, {
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m: `go_gc_duration_seconds{quantile="0"}`,
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v: 4.9351e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0"),
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}, {
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m: `go_gc_duration_seconds{quantile="0.25",}`,
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v: 7.424100000000001e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0.25"),
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}, {
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m: `go_gc_duration_seconds{quantile="0.5",a="b"}`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0.5", "a", "b"),
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}, {
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m: `go_gc_duration_seconds{quantile="0.8", a="b"}`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0.8", "a", "b"),
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}, {
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m: `go_gc_duration_seconds{ quantile="0.9", a="b"}`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0.9", "a", "b"),
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}, {
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comment: "# Hrandom comment starting with prefix of HELP",
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}, {
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comment: "#",
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}, {
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m: `wind_speed{A="2",c="3"}`,
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v: 12345,
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lset: labels.FromStrings("A", "2", "__name__", "wind_speed", "c", "3"),
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}, {
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comment: "# comment with escaped \\n newline",
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}, {
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comment: "# comment with escaped \\ escape character",
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}, {
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m: "nohelp1",
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help: "",
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}, {
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m: "nohelp2",
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help: "",
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}, {
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m: `go_gc_duration_seconds{ quantile="1.0", a="b" }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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m: `go_gc_duration_seconds { quantile="1.0", a="b" }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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m: `go_gc_duration_seconds { quantile= "1.0", a= "b", }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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m: `go_gc_duration_seconds { quantile = "1.0", a = "b" }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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// NOTE: Unlike OpenMetrics, Promparse allows spaces between label terms. This appears to be unintended and should probably be fixed.
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m: `go_gc_duration_seconds { quantile = "2.0" a = "b" }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "2.0", "a", "b"),
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}, {
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m: `go_gc_duration_seconds_count`,
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v: 99,
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lset: labels.FromStrings("__name__", "go_gc_duration_seconds_count"),
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}, {
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m: `some:aggregate:rate5m{a_b="c"}`,
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v: 1,
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lset: labels.FromStrings("__name__", "some:aggregate:rate5m", "a_b", "c"),
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}, {
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m: "go_goroutines",
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help: "Number of goroutines that currently exist.",
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}, {
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m: "go_goroutines",
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typ: model.MetricTypeGauge,
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}, {
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m: `go_goroutines`,
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v: 33,
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t: int64p(123123),
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lset: labels.FromStrings("__name__", "go_goroutines"),
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}, {
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m: "_metric_starting_with_underscore",
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v: 1,
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lset: labels.FromStrings("__name__", "_metric_starting_with_underscore"),
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}, {
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m: "testmetric{_label_starting_with_underscore=\"foo\"}",
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v: 1,
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lset: labels.FromStrings("__name__", "testmetric", "_label_starting_with_underscore", "foo"),
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}, {
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m: "testmetric{label=\"\\\"bar\\\"\"}",
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v: 1,
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lset: labels.FromStrings("__name__", "testmetric", "label", `"bar"`),
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}, {
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m: "metric",
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help: "foo\x00bar",
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}, {
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m: "null_byte_metric{a=\"abc\x00\"}",
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v: 1,
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lset: labels.FromStrings("__name__", "null_byte_metric", "a", "abc\x00"),
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},
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}
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p := NewPromParser([]byte(input), labels.NewSymbolTable())
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checkParseResults(t, p, exp)
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}
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func checkParseResults(t *testing.T, p Parser, exp []expectedParse) {
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i := 0
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var res labels.Labels
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for {
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et, err := p.Next()
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if errors.Is(err, io.EOF) {
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break
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}
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require.NoError(t, err)
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switch et {
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case EntrySeries:
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m, ts, v := p.Series()
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p.Metric(&res)
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require.Equal(t, exp[i].m, string(m))
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require.Equal(t, exp[i].t, ts)
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require.Equal(t, exp[i].v, v)
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testutil.RequireEqual(t, exp[i].lset, res)
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var e exemplar.Exemplar
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found := p.Exemplar(&e)
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if exp[i].e == nil {
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require.False(t, found)
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} else {
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require.True(t, found)
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testutil.RequireEqual(t, *exp[i].e, e)
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}
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case EntryType:
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m, typ := p.Type()
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require.Equal(t, exp[i].m, string(m))
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require.Equal(t, exp[i].typ, typ)
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case EntryHelp:
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m, h := p.Help()
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require.Equal(t, exp[i].m, string(m))
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require.Equal(t, exp[i].help, string(h))
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case EntryUnit:
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m, u := p.Unit()
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require.Equal(t, exp[i].m, string(m))
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require.Equal(t, exp[i].unit, string(u))
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case EntryComment:
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require.Equal(t, exp[i].comment, string(p.Comment()))
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}
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i++
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}
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require.Len(t, exp, i)
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}
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func TestUTF8PromParse(t *testing.T) {
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oldValidationScheme := model.NameValidationScheme
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model.NameValidationScheme = model.UTF8Validation
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defer func() {
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model.NameValidationScheme = oldValidationScheme
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}()
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input := `# HELP "go.gc_duration_seconds" A summary of the GC invocation durations.
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# TYPE "go.gc_duration_seconds" summary
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{"go.gc_duration_seconds",quantile="0"} 4.9351e-05
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{"go.gc_duration_seconds",quantile="0.25",} 7.424100000000001e-05
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{"go.gc_duration_seconds",quantile="0.5",a="b"} 8.3835e-05
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{"go.gc_duration_seconds",quantile="0.8", a="b"} 8.3835e-05
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{"go.gc_duration_seconds", quantile="0.9", a="b"} 8.3835e-05
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{"go.gc_duration_seconds", quantile="1.0", a="b" } 8.3835e-05
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{ "go.gc_duration_seconds", quantile="1.0", a="b" } 8.3835e-05
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{ "go.gc_duration_seconds", quantile= "1.0", a= "b", } 8.3835e-05
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{ "go.gc_duration_seconds", quantile = "1.0", a = "b" } 8.3835e-05
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{"go.gc_duration_seconds_count"} 99
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{"Heizölrückstoßabdämpfung 10€ metric with \"interesting\" {character\nchoices}","strange©™\n'quoted' \"name\""="6"} 10.0`
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exp := []expectedParse{
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{
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m: "go.gc_duration_seconds",
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help: "A summary of the GC invocation durations.",
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}, {
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m: "go.gc_duration_seconds",
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typ: model.MetricTypeSummary,
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}, {
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m: `{"go.gc_duration_seconds",quantile="0"}`,
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v: 4.9351e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "0"),
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}, {
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m: `{"go.gc_duration_seconds",quantile="0.25",}`,
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v: 7.424100000000001e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "0.25"),
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}, {
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m: `{"go.gc_duration_seconds",quantile="0.5",a="b"}`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "0.5", "a", "b"),
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}, {
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m: `{"go.gc_duration_seconds",quantile="0.8", a="b"}`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "0.8", "a", "b"),
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}, {
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m: `{"go.gc_duration_seconds", quantile="0.9", a="b"}`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "0.9", "a", "b"),
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}, {
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m: `{"go.gc_duration_seconds", quantile="1.0", a="b" }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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m: `{ "go.gc_duration_seconds", quantile="1.0", a="b" }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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m: `{ "go.gc_duration_seconds", quantile= "1.0", a= "b", }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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m: `{ "go.gc_duration_seconds", quantile = "1.0", a = "b" }`,
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v: 8.3835e-05,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds", "quantile", "1.0", "a", "b"),
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}, {
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m: `{"go.gc_duration_seconds_count"}`,
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v: 99,
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lset: labels.FromStrings("__name__", "go.gc_duration_seconds_count"),
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}, {
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m: `{"Heizölrückstoßabdämpfung 10€ metric with \"interesting\" {character\nchoices}","strange©™\n'quoted' \"name\""="6"}`,
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v: 10.0,
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lset: labels.FromStrings("__name__", `Heizölrückstoßabdämpfung 10€ metric with "interesting" {character
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choices}`, "strange©™\n'quoted' \"name\"", "6"),
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},
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}
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p := NewPromParser([]byte(input), labels.NewSymbolTable())
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checkParseResults(t, p, exp)
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}
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func TestPromParseErrors(t *testing.T) {
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cases := []struct {
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input string
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err string
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}{
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{
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input: "a",
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err: "expected value after metric, got \"\\n\" (\"INVALID\") while parsing: \"a\\n\"",
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},
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{
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input: "a{b='c'} 1\n",
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err: "expected label value, got \"'\" (\"INVALID\") while parsing: \"a{b='\"",
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},
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{
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input: "a{b=\n",
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err: "expected label value, got \"\\n\" (\"INVALID\") while parsing: \"a{b=\\n\"",
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},
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{
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input: "a{\xff=\"foo\"} 1\n",
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err: "expected label name, got \"\\xff\" (\"INVALID\") while parsing: \"a{\\xff\"",
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},
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{
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input: "a{b=\"\xff\"} 1\n",
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err: "invalid UTF-8 label value: \"\\\"\\xff\\\"\"",
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},
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{
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input: `{"a", "b = "c"}`,
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err: "expected equal, got \"c\\\"\" (\"LNAME\") while parsing: \"{\\\"a\\\", \\\"b = \\\"c\\\"\"",
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},
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{
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input: `{"a",b\nc="d"} 1`,
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err: "expected equal, got \"\\\\\" (\"INVALID\") while parsing: \"{\\\"a\\\",b\\\\\"",
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},
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{
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input: "a true\n",
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err: "strconv.ParseFloat: parsing \"true\": invalid syntax while parsing: \"a true\"",
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},
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{
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input: "something_weird{problem=\"",
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err: "expected label value, got \"\\\"\\n\" (\"INVALID\") while parsing: \"something_weird{problem=\\\"\\n\"",
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},
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{
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input: "empty_label_name{=\"\"} 0",
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err: "expected label name, got \"=\\\"\" (\"EQUAL\") while parsing: \"empty_label_name{=\\\"\"",
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},
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{
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input: "foo 1_2\n",
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err: "unsupported character in float while parsing: \"foo 1_2\"",
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},
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{
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input: "foo 0x1p-3\n",
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err: "unsupported character in float while parsing: \"foo 0x1p-3\"",
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},
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{
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input: "foo 0x1P-3\n",
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err: "unsupported character in float while parsing: \"foo 0x1P-3\"",
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},
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{
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input: "foo 0 1_2\n",
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err: "expected next entry after timestamp, got \"_\" (\"INVALID\") while parsing: \"foo 0 1_\"",
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},
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{
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input: `{a="ok"} 1`,
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err: "metric name not set while parsing: \"{a=\\\"ok\\\"} 1\"",
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},
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{
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input: "# TYPE #\n#EOF\n",
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err: "expected metric name after TYPE, got \"#\" (\"INVALID\") while parsing: \"# TYPE #\"",
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},
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{
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input: "# HELP #\n#EOF\n",
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err: "expected metric name after HELP, got \"#\" (\"INVALID\") while parsing: \"# HELP #\"",
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},
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}
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for i, c := range cases {
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p := NewPromParser([]byte(c.input), labels.NewSymbolTable())
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var err error
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for err == nil {
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_, err = p.Next()
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}
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require.Error(t, err)
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require.Equal(t, c.err, err.Error(), "test %d", i)
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}
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}
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func TestPromNullByteHandling(t *testing.T) {
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cases := []struct {
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input string
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err string
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}{
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{
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input: "null_byte_metric{a=\"abc\x00\"} 1",
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err: "",
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},
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{
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input: "a{b=\"\x00ss\"} 1\n",
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err: "",
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},
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{
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input: "a{b=\"\x00\"} 1\n",
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err: "",
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},
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{
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input: "a{b=\"\x00\"} 1\n",
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err: "",
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},
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{
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input: "a{b=\x00\"ssss\"} 1\n",
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err: "expected label value, got \"\\x00\" (\"INVALID\") while parsing: \"a{b=\\x00\"",
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},
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{
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input: "a{b=\"\x00",
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err: "expected label value, got \"\\\"\\x00\\n\" (\"INVALID\") while parsing: \"a{b=\\\"\\x00\\n\"",
|
|
},
|
|
{
|
|
input: "a{b\x00=\"hiih\"} 1",
|
|
err: "expected equal, got \"\\x00\" (\"INVALID\") while parsing: \"a{b\\x00\"",
|
|
},
|
|
{
|
|
input: "a\x00{b=\"ddd\"} 1",
|
|
err: "expected value after metric, got \"\\x00\" (\"INVALID\") while parsing: \"a\\x00\"",
|
|
},
|
|
{
|
|
input: "a 0 1\x00",
|
|
err: "expected next entry after timestamp, got \"\\x00\" (\"INVALID\") while parsing: \"a 0 1\\x00\"",
|
|
},
|
|
}
|
|
|
|
for i, c := range cases {
|
|
p := NewPromParser([]byte(c.input), labels.NewSymbolTable())
|
|
var err error
|
|
for err == nil {
|
|
_, err = p.Next()
|
|
}
|
|
|
|
if c.err == "" {
|
|
require.Equal(t, io.EOF, err, "test %d", i)
|
|
continue
|
|
}
|
|
|
|
require.Error(t, err)
|
|
require.Equal(t, c.err, err.Error(), "test %d", i)
|
|
}
|
|
}
|
|
|
|
const (
|
|
promtestdataSampleCount = 410
|
|
)
|
|
|
|
func BenchmarkParse(b *testing.B) {
|
|
for parserName, parser := range map[string]func([]byte, *labels.SymbolTable) Parser{
|
|
"prometheus": NewPromParser,
|
|
"openmetrics": NewOpenMetricsParser,
|
|
} {
|
|
for _, fn := range []string{"promtestdata.txt", "promtestdata.nometa.txt"} {
|
|
f, err := os.Open(fn)
|
|
require.NoError(b, err)
|
|
defer f.Close()
|
|
|
|
buf, err := io.ReadAll(f)
|
|
require.NoError(b, err)
|
|
|
|
b.Run(parserName+"/no-decode-metric/"+fn, func(b *testing.B) {
|
|
total := 0
|
|
|
|
b.SetBytes(int64(len(buf) / promtestdataSampleCount))
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
|
|
st := labels.NewSymbolTable()
|
|
for i := 0; i < b.N; i += promtestdataSampleCount {
|
|
p := parser(buf, st)
|
|
|
|
Outer:
|
|
for i < b.N {
|
|
t, err := p.Next()
|
|
switch t {
|
|
case EntryInvalid:
|
|
if errors.Is(err, io.EOF) {
|
|
break Outer
|
|
}
|
|
b.Fatal(err)
|
|
case EntrySeries:
|
|
m, _, _ := p.Series()
|
|
total += len(m)
|
|
i++
|
|
}
|
|
}
|
|
}
|
|
_ = total
|
|
})
|
|
b.Run(parserName+"/decode-metric/"+fn, func(b *testing.B) {
|
|
total := 0
|
|
|
|
b.SetBytes(int64(len(buf) / promtestdataSampleCount))
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
|
|
st := labels.NewSymbolTable()
|
|
for i := 0; i < b.N; i += promtestdataSampleCount {
|
|
p := parser(buf, st)
|
|
|
|
Outer:
|
|
for i < b.N {
|
|
t, err := p.Next()
|
|
switch t {
|
|
case EntryInvalid:
|
|
if errors.Is(err, io.EOF) {
|
|
break Outer
|
|
}
|
|
b.Fatal(err)
|
|
case EntrySeries:
|
|
m, _, _ := p.Series()
|
|
|
|
var res labels.Labels
|
|
p.Metric(&res)
|
|
|
|
total += len(m)
|
|
i++
|
|
}
|
|
}
|
|
}
|
|
_ = total
|
|
})
|
|
b.Run(parserName+"/decode-metric-reuse/"+fn, func(b *testing.B) {
|
|
total := 0
|
|
var res labels.Labels
|
|
|
|
b.SetBytes(int64(len(buf) / promtestdataSampleCount))
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
|
|
st := labels.NewSymbolTable()
|
|
for i := 0; i < b.N; i += promtestdataSampleCount {
|
|
p := parser(buf, st)
|
|
|
|
Outer:
|
|
for i < b.N {
|
|
t, err := p.Next()
|
|
switch t {
|
|
case EntryInvalid:
|
|
if errors.Is(err, io.EOF) {
|
|
break Outer
|
|
}
|
|
b.Fatal(err)
|
|
case EntrySeries:
|
|
m, _, _ := p.Series()
|
|
|
|
p.Metric(&res)
|
|
|
|
total += len(m)
|
|
i++
|
|
}
|
|
}
|
|
}
|
|
_ = total
|
|
})
|
|
b.Run("expfmt-text/"+fn, func(b *testing.B) {
|
|
if parserName != "prometheus" {
|
|
b.Skip()
|
|
}
|
|
b.SetBytes(int64(len(buf) / promtestdataSampleCount))
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
|
|
total := 0
|
|
|
|
for i := 0; i < b.N; i += promtestdataSampleCount {
|
|
decSamples := make(model.Vector, 0, 50)
|
|
sdec := expfmt.SampleDecoder{
|
|
Dec: expfmt.NewDecoder(bytes.NewReader(buf), expfmt.FmtText),
|
|
Opts: &expfmt.DecodeOptions{
|
|
Timestamp: model.TimeFromUnixNano(0),
|
|
},
|
|
}
|
|
|
|
for {
|
|
if err = sdec.Decode(&decSamples); err != nil {
|
|
break
|
|
}
|
|
total += len(decSamples)
|
|
decSamples = decSamples[:0]
|
|
}
|
|
}
|
|
_ = total
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkGzip(b *testing.B) {
|
|
for _, fn := range []string{"promtestdata.txt", "promtestdata.nometa.txt"} {
|
|
b.Run(fn, func(b *testing.B) {
|
|
f, err := os.Open(fn)
|
|
require.NoError(b, err)
|
|
defer f.Close()
|
|
|
|
var buf bytes.Buffer
|
|
gw := gzip.NewWriter(&buf)
|
|
|
|
n, err := io.Copy(gw, f)
|
|
require.NoError(b, err)
|
|
require.NoError(b, gw.Close())
|
|
|
|
gbuf, err := io.ReadAll(&buf)
|
|
require.NoError(b, err)
|
|
|
|
k := b.N / promtestdataSampleCount
|
|
|
|
b.ReportAllocs()
|
|
b.SetBytes(n / promtestdataSampleCount)
|
|
b.ResetTimer()
|
|
|
|
total := 0
|
|
|
|
for i := 0; i < k; i++ {
|
|
gr, err := gzip.NewReader(bytes.NewReader(gbuf))
|
|
require.NoError(b, err)
|
|
|
|
d, err := io.ReadAll(gr)
|
|
require.NoError(b, err)
|
|
require.NoError(b, gr.Close())
|
|
|
|
total += len(d)
|
|
}
|
|
_ = total
|
|
})
|
|
}
|
|
}
|