// Copyright 2017 The OMetheus 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 textparse
import (
"io"
"testing"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/stretchr/testify/require"
)
func TestOpenMetricsParse(t *testing.T) {
input := `# HELP go_gc_duration_seconds A summary of the GC invocation durations.
# TYPE go_gc_duration_seconds summary
# UNIT go_gc_duration_seconds seconds
go_gc_duration_seconds{quantile="0"} 4.9351e-05
go_gc_duration_seconds{quantile="0.25"} 7.424100000000001e-05
go_gc_duration_seconds{quantile="0.5",a="b"} 8.3835e-05
# HELP nohelp1
# HELP help2 escape \ \n \\ \" \x chars
# UNIT nounit
go_gc_duration_seconds{quantile="1.0",a="b"} 8.3835e-05
go_gc_duration_seconds_count 99
some:aggregate:rate5m{a_b="c"} 1
# HELP go_goroutines Number of goroutines that currently exist.
# TYPE go_goroutines gauge
go_goroutines 33 123.123
# TYPE hh histogram
hh_bucket{le="+Inf"} 1 # {} 4
# TYPE gh gaugehistogram
gh_bucket{le="+Inf"} 1 # {} 4
# TYPE ii info
ii{foo="bar"} 1
# TYPE ss stateset
ss{ss="foo"} 1
ss{ss="bar"} 0
# TYPE un unknown
_metric_starting_with_underscore 1
testmetric{_label_starting_with_underscore="foo"} 1
testmetric{label="\"bar\""} 1`
input += "\n# HELP metric foo\x00bar"
input += "\nnull_byte_metric{a=\"abc\x00\"} 1"
input += "\n# EOF\n"
int64p := func(x int64) *int64 { return &x }
exp := []struct {
lset labels.Labels
m string
t *int64
v float64
typ MetricType
help string
unit string
comment string
}{
{
m: "go_gc_duration_seconds",
help: "A summary of the GC invocation durations.",
}, {
m: "go_gc_duration_seconds",
typ: MetricTypeSummary,
}, {
m: "go_gc_duration_seconds",
unit: "seconds",
}, {
m: `go_gc_duration_seconds{quantile="0"}`,
v: 4.9351e-05,
lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0"),
}, {
m: `go_gc_duration_seconds{quantile="0.25"}`,
v: 7.424100000000001e-05,
lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0.25"),
}, {
m: `go_gc_duration_seconds{quantile="0.5",a="b"}`,
v: 8.3835e-05,
lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "0.5", "a", "b"),
}, {
m: "nohelp1",
help: "",
}, {
m: "help2",
help: "escape \\ \n \\ \" \\x chars",
}, {
m: "nounit",
unit: "",
}, {
m: `go_gc_duration_seconds{quantile="1.0",a="b"}`,
v: 8.3835e-05,
lset: labels.FromStrings("__name__", "go_gc_duration_seconds", "quantile", "1.0", "a", "b"),
}, {
m: `go_gc_duration_seconds_count`,
v: 99,
lset: labels.FromStrings("__name__", "go_gc_duration_seconds_count"),
}, {
m: `some:aggregate:rate5m{a_b="c"}`,
v: 1,
lset: labels.FromStrings("__name__", "some:aggregate:rate5m", "a_b", "c"),
}, {
m: "go_goroutines",
help: "Number of goroutines that currently exist.",
}, {
m: "go_goroutines",
typ: MetricTypeGauge,
}, {
m: `go_goroutines`,
v: 33,
t: int64p(123123),
lset: labels.FromStrings("__name__", "go_goroutines"),
}, {
m: "hh",
typ: MetricTypeHistogram,
}, {
m: `hh_bucket{le="+Inf"}`,
v: 1,
lset: labels.FromStrings("__name__", "hh_bucket", "le", "+Inf"),
}, {
m: "gh",
typ: MetricTypeGaugeHistogram,
}, {
m: `gh_bucket{le="+Inf"}`,
v: 1,
lset: labels.FromStrings("__name__", "gh_bucket", "le", "+Inf"),
}, {
m: "ii",
typ: MetricTypeInfo,
}, {
m: `ii{foo="bar"}`,
v: 1,
lset: labels.FromStrings("__name__", "ii", "foo", "bar"),
}, {
m: "ss",
typ: MetricTypeStateset,
}, {
m: `ss{ss="foo"}`,
v: 1,
lset: labels.FromStrings("__name__", "ss", "ss", "foo"),
}, {
m: `ss{ss="bar"}`,
v: 0,
lset: labels.FromStrings("__name__", "ss", "ss", "bar"),
}, {
m: "un",
typ: MetricTypeUnknown,
}, {
m: "_metric_starting_with_underscore",
v: 1,
lset: labels.FromStrings("__name__", "_metric_starting_with_underscore"),
}, {
m: "testmetric{_label_starting_with_underscore=\"foo\"}",
v: 1,
lset: labels.FromStrings("__name__", "testmetric", "_label_starting_with_underscore", "foo"),
}, {
m: "testmetric{label=\"\\\"bar\\\"\"}",
v: 1,
lset: labels.FromStrings("__name__", "testmetric", "label", `"bar"`),
}, {
m: "metric",
help: "foo\x00bar",
}, {
m: "null_byte_metric{a=\"abc\x00\"}",
v: 1,
lset: labels.FromStrings("__name__", "null_byte_metric", "a", "abc\x00"),
},
}
p := NewOpenMetricsParser([]byte(input))
i := 0
var res labels.Labels
for {
et, err := p.Next()
if err == io.EOF {
break
}
require.NoError(t, err)
switch et {
case EntrySeries:
m, ts, v := p.Series()
p.Metric(&res)
require.Equal(t, exp[i].m, string(m))
require.Equal(t, exp[i].t, ts)
require.Equal(t, exp[i].v, v)
require.Equal(t, exp[i].lset, res)
res = res[:0]
case EntryType:
m, typ := p.Type()
require.Equal(t, exp[i].m, string(m))
require.Equal(t, exp[i].typ, typ)
case EntryHelp:
m, h := p.Help()
require.Equal(t, exp[i].m, string(m))
require.Equal(t, exp[i].help, string(h))
case EntryUnit:
m, u := p.Unit()
require.Equal(t, exp[i].m, string(m))
require.Equal(t, exp[i].unit, string(u))
case EntryComment:
require.Equal(t, exp[i].comment, string(p.Comment()))
}
i++
}
require.Equal(t, len(exp), i)
}
func TestOpenMetricsParseErrors(t *testing.T) {
cases := []struct {
input string
err string
}{
{
input: "",
err: "unexpected end of data, got \"EOF\"",
},
{
input: "a",
err: "expected value after metric, got \"MNAME\"",
},
{
input: "\n",
err: "\"INVALID\" \"\\n\" is not a valid start token",
},
{
input: " a 1\n",
err: "\"INVALID\" \" \" is not a valid start token",
},
{
input: "9\n",
err: "\"INVALID\" \"9\" is not a valid start token",
},
{
input: "# TYPE u untyped\n",
err: "invalid metric type \"untyped\"",
},
{
input: "# TYPE c counter \n",
err: "invalid metric type \"counter \"",
},
{
input: "# TYPE c counter\n",
err: "\"INVALID\" \" \" is not a valid start token",
},
{
input: "# UNIT metric suffix\n",
err: "unit not a suffix of metric \"metric\"",
},
{
input: "# UNIT metricsuffix suffix\n",
err: "unit not a suffix of metric \"metricsuffix\"",
},
{
input: "# UNIT m suffix\n",
err: "unit not a suffix of metric \"m\"",
},
{
input: "# HELP m\n",
err: "expected text in HELP, got \"INVALID\"",
},
{
input: "a\t1\n",
err: "expected value after metric, got \"MNAME\"",
},
{
input: "a 1\t2\n",
err: "strconv.ParseFloat: parsing \"1\\t2\": invalid syntax",
},
{
input: "a 1 2 \n",
err: "expected next entry after timestamp, got \"MNAME\"",
},
{
input: "a 1 2 #\n",
err: "expected next entry after timestamp, got \"MNAME\"",
},
{
input: "a 1 1z\n",
err: "strconv.ParseFloat: parsing \"1z\": invalid syntax",
},
{
input: " # EOF\n",
err: "\"INVALID\" \" \" is not a valid start token",
},
{
input: "# EOF\na 1",
err: "unexpected data after # EOF",
},
{
input: "# EOF\n\n",
err: "unexpected data after # EOF",
},
{
input: "# EOFa 1",
err: "unexpected data after # EOF",
},
{
input: "#\tTYPE c counter\n",
err: "\"INVALID\" \"\\t\" is not a valid start token",
},
{
input: "# TYPE c counter\n",
err: "invalid metric type \" counter\"",
},
{
input: "a 1 1 1\n",
err: "expected next entry after timestamp, got \"MNAME\"",
},
{
input: "a{b='c'} 1\n",
err: "expected label value, got \"INVALID\"",
},
{
input: "a{b=\"c\",} 1\n",
err: "expected label name, got \"BCLOSE\"",
},
{
input: "a{,b=\"c\"} 1\n",
err: "expected label name or left brace, got \"COMMA\"",
},
{
input: "a{b=\"c\"d=\"e\"} 1\n",
err: "expected comma, got \"LNAME\"",
},
{
input: "a{b=\"c\",,d=\"e\"} 1\n",
err: "expected label name, got \"COMMA\"",
},
{
input: "a{b=\n",
err: "expected label value, got \"INVALID\"",
},
{
input: "a{\xff=\"foo\"} 1\n",
err: "expected label name or left brace, got \"INVALID\"",
},
{
input: "a{b=\"\xff\"} 1\n",
err: "invalid UTF-8 label value",
},
{
input: "a true\n",
err: "strconv.ParseFloat: parsing \"true\": invalid syntax",
},
{
input: "something_weird{problem=\"",
err: "expected label value, got \"INVALID\"",
},
{
input: "empty_label_name{=\"\"} 0",
err: "expected label name or left brace, got \"EQUAL\"",
},
}
for i, c := range cases {
p := NewOpenMetricsParser([]byte(c.input))
var err error
for err == nil {
_, err = p.Next()
}
require.NotNil(t, err)
require.Equal(t, c.err, err.Error(), "test %d", i)
}
}
func TestOMNullByteHandling(t *testing.T) {
cases := []struct {
input string
err string
}{
{
input: "null_byte_metric{a=\"abc\x00\"} 1\n# EOF\n",
err: "",
},
{
input: "a{b=\"\x00ss\"} 1\n# EOF\n",
err: "",
},
{
input: "a{b=\"\x00\"} 1\n# EOF\n",
err: "",
},
{
input: "a{b=\"\x00\"} 1\n# EOF",
err: "",
},
{
input: "a{b=\x00\"ssss\"} 1\n# EOF\n",
err: "expected label value, got \"INVALID\"",
},
{
input: "a{b=\"\x00",
err: "expected label value, got \"INVALID\"",
},
{
input: "a{b\x00=\"hiih\"} 1",
err: "expected equal, got \"INVALID\"",
},
{
input: "a\x00{b=\"ddd\"} 1",
err: "expected value after metric, got \"MNAME\"",
},
}
for i, c := range cases {
p := NewOpenMetricsParser([]byte(c.input))
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)
}
}