// Copyright 2021 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 textparse
import (
"bytes"
"encoding/binary"
"errors"
"io"
"testing"
"github.com/gogo/protobuf/proto"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/model/exemplar"
"github.com/prometheus/prometheus/model/histogram"
"github.com/prometheus/prometheus/model/labels"
dto "github.com/prometheus/prometheus/prompb/io/prometheus/client"
)
func TestProtobufParse(t *testing.T) {
textMetricFamilies := []string{
`name: "go_build_info"
help: "Build information about the main Go module."
type: GAUGE
metric: <
label: <
name: "checksum"
value: ""
>
label: <
name: "path"
value: "github.com/prometheus/client_golang"
>
label: <
name: "version"
value: "(devel)"
>
gauge: <
value: 1
>
>
`,
`name: "go_memstats_alloc_bytes_total"
help: "Total number of bytes allocated, even if freed."
type: COUNTER
metric: <
counter: <
value: 1.546544e+06
exemplar: <
label: <
name: "dummyID"
value: "42"
>
value: 12
timestamp: <
seconds: 1625851151
nanos: 233181499
>
>
>
>
`,
`name: "something_untyped"
help: "Just to test the untyped type."
type: UNTYPED
metric: <
untyped: <
value: 42
>
timestamp_ms: 1234567
>
`,
`name: "test_histogram"
help: "Test histogram with many buckets removed to keep it manageable in size."
type: HISTOGRAM
metric: <
histogram: <
sample_count: 175
sample_sum: 0.0008280461746287094
bucket: <
cumulative_count: 2
upper_bound: -0.0004899999999999998
>
bucket: <
cumulative_count: 4
upper_bound: -0.0003899999999999998
exemplar: <
label: <
name: "dummyID"
value: "59727"
>
value: -0.00039
timestamp: <
seconds: 1625851155
nanos: 146848499
>
>
>
bucket: <
cumulative_count: 16
upper_bound: -0.0002899999999999998
exemplar: <
label: <
name: "dummyID"
value: "5617"
>
value: -0.00029
>
>
schema: 3
zero_threshold: 2.938735877055719e-39
zero_count: 2
negative_span: <
offset: -162
length: 1
>
negative_span: <
offset: 23
length: 4
>
negative_delta: 1
negative_delta: 3
negative_delta: -2
negative_delta: -1
negative_delta: 1
positive_span: <
offset: -161
length: 1
>
positive_span: <
offset: 8
length: 3
>
positive_delta: 1
positive_delta: 2
positive_delta: -1
positive_delta: -1
>
timestamp_ms: 1234568
>
`,
`name: "test_gauge_histogram"
help: "Like test_histogram but as gauge histogram."
type: GAUGE_HISTOGRAM
metric: <
histogram: <
sample_count: 175
sample_sum: 0.0008280461746287094
bucket: <
cumulative_count: 2
upper_bound: -0.0004899999999999998
>
bucket: <
cumulative_count: 4
upper_bound: -0.0003899999999999998
exemplar: <
label: <
name: "dummyID"
value: "59727"
>
value: -0.00039
timestamp: <
seconds: 1625851155
nanos: 146848499
>
>
>
bucket: <
cumulative_count: 16
upper_bound: -0.0002899999999999998
exemplar: <
label: <
name: "dummyID"
value: "5617"
>
value: -0.00029
>
>
schema: 3
zero_threshold: 2.938735877055719e-39
zero_count: 2
negative_span: <
offset: -162
length: 1
>
negative_span: <
offset: 23
length: 4
>
negative_delta: 1
negative_delta: 3
negative_delta: -2
negative_delta: -1
negative_delta: 1
positive_span: <
offset: -161
length: 1
>
positive_span: <
offset: 8
length: 3
>
positive_delta: 1
positive_delta: 2
positive_delta: -1
positive_delta: -1
>
timestamp_ms: 1234568
>
`,
`name: "test_float_histogram"
help: "Test float histogram with many buckets removed to keep it manageable in size."
type: HISTOGRAM
metric: <
histogram: <
sample_count: 175
sample_count_float: 175.0
sample_sum: 0.0008280461746287094
bucket: <
cumulative_count_float: 2.0
upper_bound: -0.0004899999999999998
>
bucket: <
cumulative_count_float: 4.0
upper_bound: -0.0003899999999999998
exemplar: <
label: <
name: "dummyID"
value: "59727"
>
value: -0.00039
timestamp: <
seconds: 1625851155
nanos: 146848499
>
>
>
bucket: <
cumulative_count_float: 16
upper_bound: -0.0002899999999999998
exemplar: <
label: <
name: "dummyID"
value: "5617"
>
value: -0.00029
>
>
schema: 3
zero_threshold: 2.938735877055719e-39
zero_count_float: 2.0
negative_span: <
offset: -162
length: 1
>
negative_span: <
offset: 23
length: 4
>
negative_count: 1.0
negative_count: 3.0
negative_count: -2.0
negative_count: -1.0
negative_count: 1.0
positive_span: <
offset: -161
length: 1
>
positive_span: <
offset: 8
length: 3
>
positive_count: 1.0
positive_count: 2.0
positive_count: -1.0
positive_count: -1.0
>
timestamp_ms: 1234568
>
`,
`name: "test_gauge_float_histogram"
help: "Like test_float_histogram but as gauge histogram."
type: GAUGE_HISTOGRAM
metric: <
histogram: <
sample_count: 175
sample_count_float: 175.0
sample_sum: 0.0008280461746287094
bucket: <
cumulative_count_float: 2.0
upper_bound: -0.0004899999999999998
>
bucket: <
cumulative_count_float: 4.0
upper_bound: -0.0003899999999999998
exemplar: <
label: <
name: "dummyID"
value: "59727"
>
value: -0.00039
timestamp: <
seconds: 1625851155
nanos: 146848499
>
>
>
bucket: <
cumulative_count_float: 16
upper_bound: -0.0002899999999999998
exemplar: <
label: <
name: "dummyID"
value: "5617"
>
value: -0.00029
>
>
schema: 3
zero_threshold: 2.938735877055719e-39
zero_count_float: 2.0
negative_span: <
offset: -162
length: 1
>
negative_span: <
offset: 23
length: 4
>
negative_count: 1.0
negative_count: 3.0
negative_count: -2.0
negative_count: -1.0
negative_count: 1.0
positive_span: <
offset: -161
length: 1
>
positive_span: <
offset: 8
length: 3
>
positive_count: 1.0
positive_count: 2.0
positive_count: -1.0
positive_count: -1.0
>
timestamp_ms: 1234568
>
`,
`name: "test_histogram2"
help: "Similar histogram as before but now without sparse buckets."
type: HISTOGRAM
metric: <
histogram: <
sample_count: 175
sample_sum: 0.000828
bucket: <
cumulative_count: 2
upper_bound: -0.00048
>
bucket: <
cumulative_count: 4
upper_bound: -0.00038
exemplar: <
label: <
name: "dummyID"
value: "59727"
>
value: -0.00038
timestamp: <
seconds: 1625851153
nanos: 146848499
>
>
>
bucket: <
cumulative_count: 16
upper_bound: 1
exemplar: <
label: <
name: "dummyID"
value: "5617"
>
value: -0.000295
>
>
schema: 0
zero_threshold: 0
>
>
`,
`name: "rpc_durations_seconds"
help: "RPC latency distributions."
type: SUMMARY
metric: <
label: <
name: "service"
value: "exponential"
>
summary: <
sample_count: 262
sample_sum: 0.00025551262820703587
quantile: <
quantile: 0.5
value: 6.442786329648548e-07
>
quantile: <
quantile: 0.9
value: 1.9435742936658396e-06
>
quantile: <
quantile: 0.99
value: 4.0471608667037015e-06
>
>
>
`,
`name: "without_quantiles"
help: "A summary without quantiles."
type: SUMMARY
metric: <
summary: <
sample_count: 42
sample_sum: 1.234
>
>
`,
}
varintBuf := make([]byte, binary.MaxVarintLen32)
inputBuf := &bytes.Buffer{}
for _, tmf := range textMetricFamilies {
pb := &dto.MetricFamily{}
// From text to proto message.
require.NoError(t, proto.UnmarshalText(tmf, pb))
// From proto message to binary protobuf.
protoBuf, err := proto.Marshal(pb)
require.NoError(t, err)
// Write first length, then binary protobuf.
varintLength := binary.PutUvarint(varintBuf, uint64(len(protoBuf)))
inputBuf.Write(varintBuf[:varintLength])
inputBuf.Write(protoBuf)
}
exp := []struct {
lset labels.Labels
m string
t int64
v float64
typ MetricType
help string
unit string
comment string
shs *histogram.Histogram
fhs *histogram.FloatHistogram
e []exemplar.Exemplar
}{
{
m: "go_build_info",
help: "Build information about the main Go module.",
},
{
m: "go_build_info",
typ: MetricTypeGauge,
},
{
m: "go_build_info\xFFchecksum\xFF\xFFpath\xFFgithub.com/prometheus/client_golang\xFFversion\xFF(devel)",
v: 1,
lset: labels.FromStrings(
"__name__", "go_build_info",
"checksum", "",
"path", "github.com/prometheus/client_golang",
"version", "(devel)",
),
},
{
m: "go_memstats_alloc_bytes_total",
help: "Total number of bytes allocated, even if freed.",
},
{
m: "go_memstats_alloc_bytes_total",
typ: MetricTypeCounter,
},
{
m: "go_memstats_alloc_bytes_total",
v: 1.546544e+06,
lset: labels.FromStrings(
"__name__", "go_memstats_alloc_bytes_total",
),
e: []exemplar.Exemplar{
{Labels: labels.FromStrings("dummyID", "42"), Value: 12, HasTs: true, Ts: 1625851151233},
},
},
{
m: "something_untyped",
help: "Just to test the untyped type.",
},
{
m: "something_untyped",
typ: MetricTypeUnknown,
},
{
m: "something_untyped",
t: 1234567,
v: 42,
lset: labels.FromStrings(
"__name__", "something_untyped",
),
},
{
m: "test_histogram",
help: "Test histogram with many buckets removed to keep it manageable in size.",
},
{
m: "test_histogram",
typ: MetricTypeHistogram,
},
{
m: "test_histogram",
t: 1234568,
shs: &histogram.Histogram{
Count: 175,
ZeroCount: 2,
Sum: 0.0008280461746287094,
ZeroThreshold: 2.938735877055719e-39,
Schema: 3,
PositiveSpans: []histogram.Span{
{Offset: -161, Length: 1},
{Offset: 8, Length: 3},
},
NegativeSpans: []histogram.Span{
{Offset: -162, Length: 1},
{Offset: 23, Length: 4},
},
PositiveBuckets: []int64{1, 2, -1, -1},
NegativeBuckets: []int64{1, 3, -2, -1, 1},
},
lset: labels.FromStrings(
"__name__", "test_histogram",
),
e: []exemplar.Exemplar{
{Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146},
{Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false},
},
},
{
m: "test_gauge_histogram",
help: "Like test_histogram but as gauge histogram.",
},
{
m: "test_gauge_histogram",
typ: MetricTypeGaugeHistogram,
},
{
m: "test_gauge_histogram",
t: 1234568,
shs: &histogram.Histogram{
CounterResetHint: histogram.GaugeType,
Count: 175,
ZeroCount: 2,
Sum: 0.0008280461746287094,
ZeroThreshold: 2.938735877055719e-39,
Schema: 3,
PositiveSpans: []histogram.Span{
{Offset: -161, Length: 1},
{Offset: 8, Length: 3},
},
NegativeSpans: []histogram.Span{
{Offset: -162, Length: 1},
{Offset: 23, Length: 4},
},
PositiveBuckets: []int64{1, 2, -1, -1},
NegativeBuckets: []int64{1, 3, -2, -1, 1},
},
lset: labels.FromStrings(
"__name__", "test_gauge_histogram",
),
e: []exemplar.Exemplar{
{Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146},
{Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false},
},
},
{
m: "test_float_histogram",
help: "Test float histogram with many buckets removed to keep it manageable in size.",
},
{
m: "test_float_histogram",
typ: MetricTypeHistogram,
},
{
m: "test_float_histogram",
t: 1234568,
fhs: &histogram.FloatHistogram{
Count: 175.0,
ZeroCount: 2.0,
Sum: 0.0008280461746287094,
ZeroThreshold: 2.938735877055719e-39,
Schema: 3,
PositiveSpans: []histogram.Span{
{Offset: -161, Length: 1},
{Offset: 8, Length: 3},
},
NegativeSpans: []histogram.Span{
{Offset: -162, Length: 1},
{Offset: 23, Length: 4},
},
PositiveBuckets: []float64{1.0, 2.0, -1.0, -1.0},
NegativeBuckets: []float64{1.0, 3.0, -2.0, -1.0, 1.0},
},
lset: labels.FromStrings(
"__name__", "test_float_histogram",
),
e: []exemplar.Exemplar{
{Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146},
{Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false},
},
},
{
m: "test_gauge_float_histogram",
help: "Like test_float_histogram but as gauge histogram.",
},
{
m: "test_gauge_float_histogram",
typ: MetricTypeGaugeHistogram,
},
{
m: "test_gauge_float_histogram",
t: 1234568,
fhs: &histogram.FloatHistogram{
CounterResetHint: histogram.GaugeType,
Count: 175.0,
ZeroCount: 2.0,
Sum: 0.0008280461746287094,
ZeroThreshold: 2.938735877055719e-39,
Schema: 3,
PositiveSpans: []histogram.Span{
{Offset: -161, Length: 1},
{Offset: 8, Length: 3},
},
NegativeSpans: []histogram.Span{
{Offset: -162, Length: 1},
{Offset: 23, Length: 4},
},
PositiveBuckets: []float64{1.0, 2.0, -1.0, -1.0},
NegativeBuckets: []float64{1.0, 3.0, -2.0, -1.0, 1.0},
},
lset: labels.FromStrings(
"__name__", "test_gauge_float_histogram",
),
e: []exemplar.Exemplar{
{Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146},
{Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false},
},
},
{
m: "test_histogram2",
help: "Similar histogram as before but now without sparse buckets.",
},
{
m: "test_histogram2",
typ: MetricTypeHistogram,
},
{
m: "test_histogram2_count",
v: 175,
lset: labels.FromStrings(
"__name__", "test_histogram2_count",
),
},
{
m: "test_histogram2_sum",
v: 0.000828,
lset: labels.FromStrings(
"__name__", "test_histogram2_sum",
),
},
{
m: "test_histogram2_bucket\xffle\xff-0.00048",
v: 2,
lset: labels.FromStrings(
"__name__", "test_histogram2_bucket",
"le", "-0.00048",
),
},
{
m: "test_histogram2_bucket\xffle\xff-0.00038",
v: 4,
lset: labels.FromStrings(
"__name__", "test_histogram2_bucket",
"le", "-0.00038",
),
e: []exemplar.Exemplar{
{Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00038, HasTs: true, Ts: 1625851153146},
},
},
{
m: "test_histogram2_bucket\xffle\xff1.0",
v: 16,
lset: labels.FromStrings(
"__name__", "test_histogram2_bucket",
"le", "1.0",
),
e: []exemplar.Exemplar{
{Labels: labels.FromStrings("dummyID", "5617"), Value: -0.000295, HasTs: false},
},
},
{
m: "test_histogram2_bucket\xffle\xff+Inf",
v: 175,
lset: labels.FromStrings(
"__name__", "test_histogram2_bucket",
"le", "+Inf",
),
},
{
m: "rpc_durations_seconds",
help: "RPC latency distributions.",
},
{
m: "rpc_durations_seconds",
typ: MetricTypeSummary,
},
{
m: "rpc_durations_seconds_count\xffservice\xffexponential",
v: 262,
lset: labels.FromStrings(
"__name__", "rpc_durations_seconds_count",
"service", "exponential",
),
},
{
m: "rpc_durations_seconds_sum\xffservice\xffexponential",
v: 0.00025551262820703587,
lset: labels.FromStrings(
"__name__", "rpc_durations_seconds_sum",
"service", "exponential",
),
},
{
m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.5",
v: 6.442786329648548e-07,
lset: labels.FromStrings(
"__name__", "rpc_durations_seconds",
"quantile", "0.5",
"service", "exponential",
),
},
{
m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.9",
v: 1.9435742936658396e-06,
lset: labels.FromStrings(
"__name__", "rpc_durations_seconds",
"quantile", "0.9",
"service", "exponential",
),
},
{
m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.99",
v: 4.0471608667037015e-06,
lset: labels.FromStrings(
"__name__", "rpc_durations_seconds",
"quantile", "0.99",
"service", "exponential",
),
},
{
m: "without_quantiles",
help: "A summary without quantiles.",
},
{
m: "without_quantiles",
typ: MetricTypeSummary,
},
{
m: "without_quantiles_count",
v: 42,
lset: labels.FromStrings(
"__name__", "without_quantiles_count",
),
},
{
m: "without_quantiles_sum",
v: 1.234,
lset: labels.FromStrings(
"__name__", "without_quantiles_sum",
),
},
}
p := NewProtobufParser(inputBuf.Bytes())
i := 0
var res labels.Labels
for {
et, err := p.Next()
if errors.Is(err, io.EOF) {
break
}
require.NoError(t, err)
switch et {
case EntrySeries:
m, ts, v := p.Series()
var e exemplar.Exemplar
p.Metric(&res)
found := p.Exemplar(&e)
require.Equal(t, exp[i].m, string(m))
if ts != nil {
require.Equal(t, exp[i].t, *ts)
} else {
require.Equal(t, exp[i].t, int64(0))
}
require.Equal(t, exp[i].v, v)
require.Equal(t, exp[i].lset, res)
if len(exp[i].e) == 0 {
require.Equal(t, false, found)
} else {
require.Equal(t, true, found)
require.Equal(t, exp[i].e[0], e)
}
case EntryHistogram:
m, ts, shs, fhs := p.Histogram()
p.Metric(&res)
require.Equal(t, exp[i].m, string(m))
if ts != nil {
require.Equal(t, exp[i].t, *ts)
} else {
require.Equal(t, exp[i].t, int64(0))
}
require.Equal(t, exp[i].lset, res)
require.Equal(t, exp[i].m, string(m))
if shs != nil {
require.Equal(t, exp[i].shs, shs)
} else {
require.Equal(t, exp[i].fhs, fhs)
}
j := 0
for e := (exemplar.Exemplar{}); p.Exemplar(&e); j++ {
require.Equal(t, exp[i].e[j], e)
e = exemplar.Exemplar{}
}
require.Equal(t, len(exp[i].e), j, "not enough exemplars found")
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)
}