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add better generate

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Signed-off-by: Jess Frazelle <acidburn@microsoft.com>
This commit is contained in:
Jess Frazelle 2018-03-20 01:33:56 -04:00
parent 3fc6abf56b
commit cdd93563f5
5655 changed files with 1187011 additions and 392 deletions
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167
vendor/github.com/prometheus/common/expfmt/bench_test.go generated vendored Normal file
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// Copyright 2015 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 expfmt
import (
"bytes"
"compress/gzip"
"io"
"io/ioutil"
"testing"
"github.com/matttproud/golang_protobuf_extensions/pbutil"
dto "github.com/prometheus/client_model/go"
)
var parser TextParser
// Benchmarks to show how much penalty text format parsing actually inflicts.
//
// Example results on Linux 3.13.0, Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz, go1.4.
//
// BenchmarkParseText 1000 1188535 ns/op 205085 B/op 6135 allocs/op
// BenchmarkParseTextGzip 1000 1376567 ns/op 246224 B/op 6151 allocs/op
// BenchmarkParseProto 10000 172790 ns/op 52258 B/op 1160 allocs/op
// BenchmarkParseProtoGzip 5000 324021 ns/op 94931 B/op 1211 allocs/op
// BenchmarkParseProtoMap 10000 187946 ns/op 58714 B/op 1203 allocs/op
//
// CONCLUSION: The overhead for the map is negligible. Text format needs ~5x more allocations.
// Without compression, it needs ~7x longer, but with compression (the more relevant scenario),
// the difference becomes less relevant, only ~4x.
//
// The test data contains 248 samples.
// BenchmarkParseText benchmarks the parsing of a text-format scrape into metric
// family DTOs.
func BenchmarkParseText(b *testing.B) {
b.StopTimer()
data, err := ioutil.ReadFile("testdata/text")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
if _, err := parser.TextToMetricFamilies(bytes.NewReader(data)); err != nil {
b.Fatal(err)
}
}
}
// BenchmarkParseTextGzip benchmarks the parsing of a gzipped text-format scrape
// into metric family DTOs.
func BenchmarkParseTextGzip(b *testing.B) {
b.StopTimer()
data, err := ioutil.ReadFile("testdata/text.gz")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
in, err := gzip.NewReader(bytes.NewReader(data))
if err != nil {
b.Fatal(err)
}
if _, err := parser.TextToMetricFamilies(in); err != nil {
b.Fatal(err)
}
}
}
// BenchmarkParseProto benchmarks the parsing of a protobuf-format scrape into
// metric family DTOs. Note that this does not build a map of metric families
// (as the text version does), because it is not required for Prometheus
// ingestion either. (However, it is required for the text-format parsing, as
// the metric family might be sprinkled all over the text, while the
// protobuf-format guarantees bundling at one place.)
func BenchmarkParseProto(b *testing.B) {
b.StopTimer()
data, err := ioutil.ReadFile("testdata/protobuf")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
family := &dto.MetricFamily{}
in := bytes.NewReader(data)
for {
family.Reset()
if _, err := pbutil.ReadDelimited(in, family); err != nil {
if err == io.EOF {
break
}
b.Fatal(err)
}
}
}
}
// BenchmarkParseProtoGzip is like BenchmarkParseProto above, but parses gzipped
// protobuf format.
func BenchmarkParseProtoGzip(b *testing.B) {
b.StopTimer()
data, err := ioutil.ReadFile("testdata/protobuf.gz")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
family := &dto.MetricFamily{}
in, err := gzip.NewReader(bytes.NewReader(data))
if err != nil {
b.Fatal(err)
}
for {
family.Reset()
if _, err := pbutil.ReadDelimited(in, family); err != nil {
if err == io.EOF {
break
}
b.Fatal(err)
}
}
}
}
// BenchmarkParseProtoMap is like BenchmarkParseProto but DOES put the parsed
// metric family DTOs into a map. This is not happening during Prometheus
// ingestion. It is just here to measure the overhead of that map creation and
// separate it from the overhead of the text format parsing.
func BenchmarkParseProtoMap(b *testing.B) {
b.StopTimer()
data, err := ioutil.ReadFile("testdata/protobuf")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
families := map[string]*dto.MetricFamily{}
in := bytes.NewReader(data)
for {
family := &dto.MetricFamily{}
if _, err := pbutil.ReadDelimited(in, family); err != nil {
if err == io.EOF {
break
}
b.Fatal(err)
}
families[family.GetName()] = family
}
}
}

429
vendor/github.com/prometheus/common/expfmt/decode.go generated vendored Normal file
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// Copyright 2015 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 expfmt
import (
"fmt"
"io"
"math"
"mime"
"net/http"
dto "github.com/prometheus/client_model/go"
"github.com/matttproud/golang_protobuf_extensions/pbutil"
"github.com/prometheus/common/model"
)
// Decoder types decode an input stream into metric families.
type Decoder interface {
Decode(*dto.MetricFamily) error
}
// DecodeOptions contains options used by the Decoder and in sample extraction.
type DecodeOptions struct {
// Timestamp is added to each value from the stream that has no explicit timestamp set.
Timestamp model.Time
}
// ResponseFormat extracts the correct format from a HTTP response header.
// If no matching format can be found FormatUnknown is returned.
func ResponseFormat(h http.Header) Format {
ct := h.Get(hdrContentType)
mediatype, params, err := mime.ParseMediaType(ct)
if err != nil {
return FmtUnknown
}
const textType = "text/plain"
switch mediatype {
case ProtoType:
if p, ok := params["proto"]; ok && p != ProtoProtocol {
return FmtUnknown
}
if e, ok := params["encoding"]; ok && e != "delimited" {
return FmtUnknown
}
return FmtProtoDelim
case textType:
if v, ok := params["version"]; ok && v != TextVersion {
return FmtUnknown
}
return FmtText
}
return FmtUnknown
}
// NewDecoder returns a new decoder based on the given input format.
// If the input format does not imply otherwise, a text format decoder is returned.
func NewDecoder(r io.Reader, format Format) Decoder {
switch format {
case FmtProtoDelim:
return &protoDecoder{r: r}
}
return &textDecoder{r: r}
}
// protoDecoder implements the Decoder interface for protocol buffers.
type protoDecoder struct {
r io.Reader
}
// Decode implements the Decoder interface.
func (d *protoDecoder) Decode(v *dto.MetricFamily) error {
_, err := pbutil.ReadDelimited(d.r, v)
if err != nil {
return err
}
if !model.IsValidMetricName(model.LabelValue(v.GetName())) {
return fmt.Errorf("invalid metric name %q", v.GetName())
}
for _, m := range v.GetMetric() {
if m == nil {
continue
}
for _, l := range m.GetLabel() {
if l == nil {
continue
}
if !model.LabelValue(l.GetValue()).IsValid() {
return fmt.Errorf("invalid label value %q", l.GetValue())
}
if !model.LabelName(l.GetName()).IsValid() {
return fmt.Errorf("invalid label name %q", l.GetName())
}
}
}
return nil
}
// textDecoder implements the Decoder interface for the text protocol.
type textDecoder struct {
r io.Reader
p TextParser
fams []*dto.MetricFamily
}
// Decode implements the Decoder interface.
func (d *textDecoder) Decode(v *dto.MetricFamily) error {
// TODO(fabxc): Wrap this as a line reader to make streaming safer.
if len(d.fams) == 0 {
// No cached metric families, read everything and parse metrics.
fams, err := d.p.TextToMetricFamilies(d.r)
if err != nil {
return err
}
if len(fams) == 0 {
return io.EOF
}
d.fams = make([]*dto.MetricFamily, 0, len(fams))
for _, f := range fams {
d.fams = append(d.fams, f)
}
}
*v = *d.fams[0]
d.fams = d.fams[1:]
return nil
}
// SampleDecoder wraps a Decoder to extract samples from the metric families
// decoded by the wrapped Decoder.
type SampleDecoder struct {
Dec Decoder
Opts *DecodeOptions
f dto.MetricFamily
}
// Decode calls the Decode method of the wrapped Decoder and then extracts the
// samples from the decoded MetricFamily into the provided model.Vector.
func (sd *SampleDecoder) Decode(s *model.Vector) error {
err := sd.Dec.Decode(&sd.f)
if err != nil {
return err
}
*s, err = extractSamples(&sd.f, sd.Opts)
return err
}
// ExtractSamples builds a slice of samples from the provided metric
// families. If an error occurs during sample extraction, it continues to
// extract from the remaining metric families. The returned error is the last
// error that has occured.
func ExtractSamples(o *DecodeOptions, fams ...*dto.MetricFamily) (model.Vector, error) {
var (
all model.Vector
lastErr error
)
for _, f := range fams {
some, err := extractSamples(f, o)
if err != nil {
lastErr = err
continue
}
all = append(all, some...)
}
return all, lastErr
}
func extractSamples(f *dto.MetricFamily, o *DecodeOptions) (model.Vector, error) {
switch f.GetType() {
case dto.MetricType_COUNTER:
return extractCounter(o, f), nil
case dto.MetricType_GAUGE:
return extractGauge(o, f), nil
case dto.MetricType_SUMMARY:
return extractSummary(o, f), nil
case dto.MetricType_UNTYPED:
return extractUntyped(o, f), nil
case dto.MetricType_HISTOGRAM:
return extractHistogram(o, f), nil
}
return nil, fmt.Errorf("expfmt.extractSamples: unknown metric family type %v", f.GetType())
}
func extractCounter(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
samples := make(model.Vector, 0, len(f.Metric))
for _, m := range f.Metric {
if m.Counter == nil {
continue
}
lset := make(model.LabelSet, len(m.Label)+1)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
smpl := &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(m.Counter.GetValue()),
}
if m.TimestampMs != nil {
smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
} else {
smpl.Timestamp = o.Timestamp
}
samples = append(samples, smpl)
}
return samples
}
func extractGauge(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
samples := make(model.Vector, 0, len(f.Metric))
for _, m := range f.Metric {
if m.Gauge == nil {
continue
}
lset := make(model.LabelSet, len(m.Label)+1)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
smpl := &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(m.Gauge.GetValue()),
}
if m.TimestampMs != nil {
smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
} else {
smpl.Timestamp = o.Timestamp
}
samples = append(samples, smpl)
}
return samples
}
func extractUntyped(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
samples := make(model.Vector, 0, len(f.Metric))
for _, m := range f.Metric {
if m.Untyped == nil {
continue
}
lset := make(model.LabelSet, len(m.Label)+1)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
smpl := &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(m.Untyped.GetValue()),
}
if m.TimestampMs != nil {
smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
} else {
smpl.Timestamp = o.Timestamp
}
samples = append(samples, smpl)
}
return samples
}
func extractSummary(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
samples := make(model.Vector, 0, len(f.Metric))
for _, m := range f.Metric {
if m.Summary == nil {
continue
}
timestamp := o.Timestamp
if m.TimestampMs != nil {
timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
}
for _, q := range m.Summary.Quantile {
lset := make(model.LabelSet, len(m.Label)+2)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
// BUG(matt): Update other names to "quantile".
lset[model.LabelName(model.QuantileLabel)] = model.LabelValue(fmt.Sprint(q.GetQuantile()))
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
samples = append(samples, &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(q.GetValue()),
Timestamp: timestamp,
})
}
lset := make(model.LabelSet, len(m.Label)+1)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_sum")
samples = append(samples, &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(m.Summary.GetSampleSum()),
Timestamp: timestamp,
})
lset = make(model.LabelSet, len(m.Label)+1)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_count")
samples = append(samples, &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(m.Summary.GetSampleCount()),
Timestamp: timestamp,
})
}
return samples
}
func extractHistogram(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
samples := make(model.Vector, 0, len(f.Metric))
for _, m := range f.Metric {
if m.Histogram == nil {
continue
}
timestamp := o.Timestamp
if m.TimestampMs != nil {
timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
}
infSeen := false
for _, q := range m.Histogram.Bucket {
lset := make(model.LabelSet, len(m.Label)+2)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.LabelName(model.BucketLabel)] = model.LabelValue(fmt.Sprint(q.GetUpperBound()))
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_bucket")
if math.IsInf(q.GetUpperBound(), +1) {
infSeen = true
}
samples = append(samples, &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(q.GetCumulativeCount()),
Timestamp: timestamp,
})
}
lset := make(model.LabelSet, len(m.Label)+1)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_sum")
samples = append(samples, &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(m.Histogram.GetSampleSum()),
Timestamp: timestamp,
})
lset = make(model.LabelSet, len(m.Label)+1)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_count")
count := &model.Sample{
Metric: model.Metric(lset),
Value: model.SampleValue(m.Histogram.GetSampleCount()),
Timestamp: timestamp,
}
samples = append(samples, count)
if !infSeen {
// Append an infinity bucket sample.
lset := make(model.LabelSet, len(m.Label)+2)
for _, p := range m.Label {
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
}
lset[model.LabelName(model.BucketLabel)] = model.LabelValue("+Inf")
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_bucket")
samples = append(samples, &model.Sample{
Metric: model.Metric(lset),
Value: count.Value,
Timestamp: timestamp,
})
}
}
return samples
}

435
vendor/github.com/prometheus/common/expfmt/decode_test.go generated vendored Normal file
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// Copyright 2015 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 expfmt
import (
"io"
"net/http"
"reflect"
"sort"
"strings"
"testing"
"github.com/golang/protobuf/proto"
dto "github.com/prometheus/client_model/go"
"github.com/prometheus/common/model"
)
func TestTextDecoder(t *testing.T) {
var (
ts = model.Now()
in = `
# Only a quite simple scenario with two metric families.
# More complicated tests of the parser itself can be found in the text package.
# TYPE mf2 counter
mf2 3
mf1{label="value1"} -3.14 123456
mf1{label="value2"} 42
mf2 4
`
out = model.Vector{
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "mf1",
"label": "value1",
},
Value: -3.14,
Timestamp: 123456,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "mf1",
"label": "value2",
},
Value: 42,
Timestamp: ts,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "mf2",
},
Value: 3,
Timestamp: ts,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "mf2",
},
Value: 4,
Timestamp: ts,
},
}
)
dec := &SampleDecoder{
Dec: &textDecoder{r: strings.NewReader(in)},
Opts: &DecodeOptions{
Timestamp: ts,
},
}
var all model.Vector
for {
var smpls model.Vector
err := dec.Decode(&smpls)
if err == io.EOF {
break
}
if err != nil {
t.Fatal(err)
}
all = append(all, smpls...)
}
sort.Sort(all)
sort.Sort(out)
if !reflect.DeepEqual(all, out) {
t.Fatalf("output does not match")
}
}
func TestProtoDecoder(t *testing.T) {
var testTime = model.Now()
scenarios := []struct {
in string
expected model.Vector
fail bool
}{
{
in: "",
},
{
in: "\x8f\x01\n\rrequest_count\x12\x12Number of requests\x18\x00\"0\n#\n\x0fsome_!abel_name\x12\x10some_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00E\xc0\"6\n)\n\x12another_label_name\x12\x13another_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00U@",
fail: true,
},
{
in: "\x8f\x01\n\rrequest_count\x12\x12Number of requests\x18\x00\"0\n#\n\x0fsome_label_name\x12\x10some_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00E\xc0\"6\n)\n\x12another_label_name\x12\x13another_label_value\x1a\t\t\x00\x00\x00\x00\x00\x00U@",
expected: model.Vector{
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count",
"some_label_name": "some_label_value",
},
Value: -42,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count",
"another_label_name": "another_label_value",
},
Value: 84,
Timestamp: testTime,
},
},
},
{
in: "\xb9\x01\n\rrequest_count\x12\x12Number of requests\x18\x02\"O\n#\n\x0fsome_label_name\x12\x10some_label_value\"(\x1a\x12\t\xaeG\xe1z\x14\xae\xef?\x11\x00\x00\x00\x00\x00\x00E\xc0\x1a\x12\t+\x87\x16\xd9\xce\xf7\xef?\x11\x00\x00\x00\x00\x00\x00U\xc0\"A\n)\n\x12another_label_name\x12\x13another_label_value\"\x14\x1a\x12\t\x00\x00\x00\x00\x00\x00\xe0?\x11\x00\x00\x00\x00\x00\x00$@",
expected: model.Vector{
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count_count",
"some_label_name": "some_label_value",
},
Value: 0,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count_sum",
"some_label_name": "some_label_value",
},
Value: 0,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count",
"some_label_name": "some_label_value",
"quantile": "0.99",
},
Value: -42,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count",
"some_label_name": "some_label_value",
"quantile": "0.999",
},
Value: -84,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count_count",
"another_label_name": "another_label_value",
},
Value: 0,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count_sum",
"another_label_name": "another_label_value",
},
Value: 0,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count",
"another_label_name": "another_label_value",
"quantile": "0.5",
},
Value: 10,
Timestamp: testTime,
},
},
},
{
in: "\x8d\x01\n\x1drequest_duration_microseconds\x12\x15The response latency.\x18\x04\"S:Q\b\x85\x15\x11\xcd\xcc\xccL\x8f\xcb:A\x1a\v\b{\x11\x00\x00\x00\x00\x00\x00Y@\x1a\f\b\x9c\x03\x11\x00\x00\x00\x00\x00\x00^@\x1a\f\b\xd0\x04\x11\x00\x00\x00\x00\x00\x00b@\x1a\f\b\xf4\v\x11\x9a\x99\x99\x99\x99\x99e@\x1a\f\b\x85\x15\x11\x00\x00\x00\x00\x00\x00\xf0\u007f",
expected: model.Vector{
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_duration_microseconds_bucket",
"le": "100",
},
Value: 123,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_duration_microseconds_bucket",
"le": "120",
},
Value: 412,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_duration_microseconds_bucket",
"le": "144",
},
Value: 592,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_duration_microseconds_bucket",
"le": "172.8",
},
Value: 1524,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_duration_microseconds_bucket",
"le": "+Inf",
},
Value: 2693,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_duration_microseconds_sum",
},
Value: 1756047.3,
Timestamp: testTime,
},
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_duration_microseconds_count",
},
Value: 2693,
Timestamp: testTime,
},
},
},
{
// The metric type is unset in this protobuf, which needs to be handled
// correctly by the decoder.
in: "\x1c\n\rrequest_count\"\v\x1a\t\t\x00\x00\x00\x00\x00\x00\xf0?",
expected: model.Vector{
&model.Sample{
Metric: model.Metric{
model.MetricNameLabel: "request_count",
},
Value: 1,
Timestamp: testTime,
},
},
},
}
for i, scenario := range scenarios {
dec := &SampleDecoder{
Dec: &protoDecoder{r: strings.NewReader(scenario.in)},
Opts: &DecodeOptions{
Timestamp: testTime,
},
}
var all model.Vector
for {
var smpls model.Vector
err := dec.Decode(&smpls)
if err == io.EOF {
break
}
if scenario.fail {
if err == nil {
t.Fatal("Expected error but got none")
}
break
}
if err != nil {
t.Fatal(err)
}
all = append(all, smpls...)
}
sort.Sort(all)
sort.Sort(scenario.expected)
if !reflect.DeepEqual(all, scenario.expected) {
t.Fatalf("%d. output does not match, want: %#v, got %#v", i, scenario.expected, all)
}
}
}
func testDiscriminatorHTTPHeader(t testing.TB) {
var scenarios = []struct {
input map[string]string
output Format
err error
}{
{
input: map[string]string{"Content-Type": `application/vnd.google.protobuf; proto="io.prometheus.client.MetricFamily"; encoding="delimited"`},
output: FmtProtoDelim,
},
{
input: map[string]string{"Content-Type": `application/vnd.google.protobuf; proto="illegal"; encoding="delimited"`},
output: FmtUnknown,
},
{
input: map[string]string{"Content-Type": `application/vnd.google.protobuf; proto="io.prometheus.client.MetricFamily"; encoding="illegal"`},
output: FmtUnknown,
},
{
input: map[string]string{"Content-Type": `text/plain; version=0.0.4`},
output: FmtText,
},
{
input: map[string]string{"Content-Type": `text/plain`},
output: FmtText,
},
{
input: map[string]string{"Content-Type": `text/plain; version=0.0.3`},
output: FmtUnknown,
},
}
for i, scenario := range scenarios {
var header http.Header
if len(scenario.input) > 0 {
header = http.Header{}
}
for key, value := range scenario.input {
header.Add(key, value)
}
actual := ResponseFormat(header)
if scenario.output != actual {
t.Errorf("%d. expected %s, got %s", i, scenario.output, actual)
}
}
}
func TestDiscriminatorHTTPHeader(t *testing.T) {
testDiscriminatorHTTPHeader(t)
}
func BenchmarkDiscriminatorHTTPHeader(b *testing.B) {
for i := 0; i < b.N; i++ {
testDiscriminatorHTTPHeader(b)
}
}
func TestExtractSamples(t *testing.T) {
var (
goodMetricFamily1 = &dto.MetricFamily{
Name: proto.String("foo"),
Help: proto.String("Help for foo."),
Type: dto.MetricType_COUNTER.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Counter: &dto.Counter{
Value: proto.Float64(4711),
},
},
},
}
goodMetricFamily2 = &dto.MetricFamily{
Name: proto.String("bar"),
Help: proto.String("Help for bar."),
Type: dto.MetricType_GAUGE.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Gauge: &dto.Gauge{
Value: proto.Float64(3.14),
},
},
},
}
badMetricFamily = &dto.MetricFamily{
Name: proto.String("bad"),
Help: proto.String("Help for bad."),
Type: dto.MetricType(42).Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Gauge: &dto.Gauge{
Value: proto.Float64(2.7),
},
},
},
}
opts = &DecodeOptions{
Timestamp: 42,
}
)
got, err := ExtractSamples(opts, goodMetricFamily1, goodMetricFamily2)
if err != nil {
t.Error("Unexpected error from ExtractSamples:", err)
}
want := model.Vector{
&model.Sample{Metric: model.Metric{model.MetricNameLabel: "foo"}, Value: 4711, Timestamp: 42},
&model.Sample{Metric: model.Metric{model.MetricNameLabel: "bar"}, Value: 3.14, Timestamp: 42},
}
if !reflect.DeepEqual(got, want) {
t.Errorf("unexpected samples extracted, got: %v, want: %v", got, want)
}
got, err = ExtractSamples(opts, goodMetricFamily1, badMetricFamily, goodMetricFamily2)
if err == nil {
t.Error("Expected error from ExtractSamples")
}
if !reflect.DeepEqual(got, want) {
t.Errorf("unexpected samples extracted, got: %v, want: %v", got, want)
}
}

88
vendor/github.com/prometheus/common/expfmt/encode.go generated vendored Normal file
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// Copyright 2015 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 expfmt
import (
"fmt"
"io"
"net/http"
"github.com/golang/protobuf/proto"
"github.com/matttproud/golang_protobuf_extensions/pbutil"
"github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg"
dto "github.com/prometheus/client_model/go"
)
// Encoder types encode metric families into an underlying wire protocol.
type Encoder interface {
Encode(*dto.MetricFamily) error
}
type encoder func(*dto.MetricFamily) error
func (e encoder) Encode(v *dto.MetricFamily) error {
return e(v)
}
// Negotiate returns the Content-Type based on the given Accept header.
// If no appropriate accepted type is found, FmtText is returned.
func Negotiate(h http.Header) Format {
for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
// Check for protocol buffer
if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
switch ac.Params["encoding"] {
case "delimited":
return FmtProtoDelim
case "text":
return FmtProtoText
case "compact-text":
return FmtProtoCompact
}
}
// Check for text format.
ver := ac.Params["version"]
if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
return FmtText
}
}
return FmtText
}
// NewEncoder returns a new encoder based on content type negotiation.
func NewEncoder(w io.Writer, format Format) Encoder {
switch format {
case FmtProtoDelim:
return encoder(func(v *dto.MetricFamily) error {
_, err := pbutil.WriteDelimited(w, v)
return err
})
case FmtProtoCompact:
return encoder(func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, v.String())
return err
})
case FmtProtoText:
return encoder(func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, proto.MarshalTextString(v))
return err
})
case FmtText:
return encoder(func(v *dto.MetricFamily) error {
_, err := MetricFamilyToText(w, v)
return err
})
}
panic("expfmt.NewEncoder: unknown format")
}

38
vendor/github.com/prometheus/common/expfmt/expfmt.go generated vendored Normal file
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// Copyright 2015 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 expfmt contains tools for reading and writing Prometheus metrics.
package expfmt
// Format specifies the HTTP content type of the different wire protocols.
type Format string
// Constants to assemble the Content-Type values for the different wire protocols.
const (
TextVersion = "0.0.4"
ProtoType = `application/vnd.google.protobuf`
ProtoProtocol = `io.prometheus.client.MetricFamily`
ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";"
// The Content-Type values for the different wire protocols.
FmtUnknown Format = `<unknown>`
FmtText Format = `text/plain; version=` + TextVersion + `; charset=utf-8`
FmtProtoDelim Format = ProtoFmt + ` encoding=delimited`
FmtProtoText Format = ProtoFmt + ` encoding=text`
FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
)
const (
hdrContentType = "Content-Type"
hdrAccept = "Accept"
)

36
vendor/github.com/prometheus/common/expfmt/fuzz.go generated vendored Normal file
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// Copyright 2014 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.
// Build only when actually fuzzing
// +build gofuzz
package expfmt
import "bytes"
// Fuzz text metric parser with with github.com/dvyukov/go-fuzz:
//
// go-fuzz-build github.com/prometheus/common/expfmt
// go-fuzz -bin expfmt-fuzz.zip -workdir fuzz
//
// Further input samples should go in the folder fuzz/corpus.
func Fuzz(in []byte) int {
parser := TextParser{}
_, err := parser.TextToMetricFamilies(bytes.NewReader(in))
if err != nil {
return 0
}
return 1
}

2
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_0 generated vendored Normal file
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@ -0,0 +1,2 @@

6
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_1 generated vendored Normal file
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@ -0,0 +1,6 @@
minimal_metric 1.234
another_metric -3e3 103948
# Even that:
no_labels{} 3
# HELP line for non-existing metric will be ignored.

12
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_2 generated vendored Normal file
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@ -0,0 +1,12 @@
# A normal comment.
#
# TYPE name counter
name{labelname="val1",basename="basevalue"} NaN
name {labelname="val2",basename="base\"v\\al\nue"} 0.23 1234567890
# HELP name two-line\n doc str\\ing
# HELP name2 doc str"ing 2
# TYPE name2 gauge
name2{labelname="val2" ,basename = "basevalue2" } +Inf 54321
name2{ labelname = "val1" , }-Inf

22
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_3 generated vendored Normal file
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@ -0,0 +1,22 @@
# TYPE my_summary summary
my_summary{n1="val1",quantile="0.5"} 110
decoy -1 -2
my_summary{n1="val1",quantile="0.9"} 140 1
my_summary_count{n1="val1"} 42
# Latest timestamp wins in case of a summary.
my_summary_sum{n1="val1"} 4711 2
fake_sum{n1="val1"} 2001
# TYPE another_summary summary
another_summary_count{n2="val2",n1="val1"} 20
my_summary_count{n2="val2",n1="val1"} 5 5
another_summary{n1="val1",n2="val2",quantile=".3"} -1.2
my_summary_sum{n1="val2"} 08 15
my_summary{n1="val3", quantile="0.2"} 4711
my_summary{n1="val1",n2="val2",quantile="-12.34",} NaN
# some
# funny comments
# HELP
# HELP
# HELP my_summary
# HELP my_summary

10
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_4 generated vendored Normal file
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@ -0,0 +1,10 @@
# HELP request_duration_microseconds The response latency.
# TYPE request_duration_microseconds histogram
request_duration_microseconds_bucket{le="100"} 123
request_duration_microseconds_bucket{le="120"} 412
request_duration_microseconds_bucket{le="144"} 592
request_duration_microseconds_bucket{le="172.8"} 1524
request_duration_microseconds_bucket{le="+Inf"} 2693
request_duration_microseconds_sum 1.7560473e+06
request_duration_microseconds_count 2693

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_0 generated vendored Normal file
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@ -0,0 +1 @@
bla 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_1 generated vendored Normal file
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@ -0,0 +1 @@
metric{label="\t"} 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_10 generated vendored Normal file
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@ -0,0 +1 @@
metric{label="bla"} 3.14 2 3

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_11 generated vendored Normal file
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@ -0,0 +1 @@
metric{label="bla"} blubb

3
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_12 generated vendored Normal file
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@ -0,0 +1,3 @@
# HELP metric one
# HELP metric two

3
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_13 generated vendored Normal file
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@ -0,0 +1,3 @@
# TYPE metric counter
# TYPE metric untyped

3
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_14 generated vendored Normal file
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@ -0,0 +1,3 @@
metric 4.12
# TYPE metric counter

2
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_15 generated vendored Normal file
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@ -0,0 +1,2 @@
# TYPE metric bla

2
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_16 generated vendored Normal file
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@ -0,0 +1,2 @@
# TYPE met-ric

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_17 generated vendored Normal file
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@ -0,0 +1 @@
@invalidmetric{label="bla"} 3.14 2

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_18 generated vendored Normal file
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@ -0,0 +1 @@
{label="bla"} 3.14 2

3
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_19 generated vendored Normal file
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@ -0,0 +1,3 @@
# TYPE metric histogram
metric_bucket{le="bla"} 3.14

3
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_2 generated vendored Normal file
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@ -0,0 +1,3 @@
metric{label="new
line"} 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_3 generated vendored Normal file
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@ -0,0 +1 @@
metric{@="bla"} 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_4 generated vendored Normal file
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@ -0,0 +1 @@
metric{__name__="bla"} 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_5 generated vendored Normal file
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@ -0,0 +1 @@
metric{label+="bla"} 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_6 generated vendored Normal file
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@ -0,0 +1 @@
metric{label=bla} 3.14

3
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_7 generated vendored Normal file
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@ -0,0 +1,3 @@
# TYPE metric summary
metric{quantile="bla"} 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_8 generated vendored Normal file
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@ -0,0 +1 @@
metric{label="bla"+} 3.14

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/from_test_parse_error_9 generated vendored Normal file
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@ -0,0 +1 @@
metric{label="bla"} 3.14 2.72

1
vendor/github.com/prometheus/common/expfmt/fuzz/corpus/minimal generated vendored Normal file
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@ -0,0 +1 @@
m{} 0

46
vendor/github.com/prometheus/common/expfmt/testdata/json2 generated vendored Normal file
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@ -0,0 +1,46 @@
[
{
"baseLabels": {
"__name__": "rpc_calls_total",
"job": "batch_job"
},
"docstring": "RPC calls.",
"metric": {
"type": "counter",
"value": [
{
"labels": {
"service": "zed"
},
"value": 25
},
{
"labels": {
"service": "bar"
},
"value": 24
}
]
}
},
{
"baseLabels": {
"__name__": "rpc_latency_microseconds"
},
"docstring": "RPC latency.",
"metric": {
"type": "histogram",
"value": [
{
"labels": {
"service": "foo"
},
"value": {
"0.010000": 15,
"0.990000": 17
}
}
]
}
}
]

46
vendor/github.com/prometheus/common/expfmt/testdata/json2_bad generated vendored Normal file
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@ -0,0 +1,46 @@
[
{
"baseLabels": {
"__name__": "rpc_calls_total",
"job": "batch_job"
},
"docstring": "RPC calls.",
"metric": {
"type": "counter",
"value": [
{
"labels": {
"servic|e": "zed"
},
"value": 25
},
{
"labels": {
"service": "bar"
},
"value": 24
}
]
}
},
{
"baseLabels": {
"__name__": "rpc_latency_microseconds"
},
"docstring": "RPC latency.",
"metric": {
"type": "histogram",
"value": [
{
"labels": {
"service": "foo"
},
"value": {
"0.010000": 15,
"0.990000": 17
}
}
]
}
}
]

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vendor/github.com/prometheus/common/expfmt/testdata/protobuf generated vendored Normal file
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BIN
vendor/github.com/prometheus/common/expfmt/testdata/protobuf.gz generated vendored Normal file
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vendor/github.com/prometheus/common/expfmt/testdata/text generated vendored Normal file
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@ -0,0 +1,322 @@
# HELP http_request_duration_microseconds The HTTP request latencies in microseconds.
# TYPE http_request_duration_microseconds summary
http_request_duration_microseconds{handler="/",quantile="0.5"} 0
http_request_duration_microseconds{handler="/",quantile="0.9"} 0
http_request_duration_microseconds{handler="/",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/"} 0
http_request_duration_microseconds_count{handler="/"} 0
http_request_duration_microseconds{handler="/alerts",quantile="0.5"} 0
http_request_duration_microseconds{handler="/alerts",quantile="0.9"} 0
http_request_duration_microseconds{handler="/alerts",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/alerts"} 0
http_request_duration_microseconds_count{handler="/alerts"} 0
http_request_duration_microseconds{handler="/api/metrics",quantile="0.5"} 0
http_request_duration_microseconds{handler="/api/metrics",quantile="0.9"} 0
http_request_duration_microseconds{handler="/api/metrics",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/api/metrics"} 0
http_request_duration_microseconds_count{handler="/api/metrics"} 0
http_request_duration_microseconds{handler="/api/query",quantile="0.5"} 0
http_request_duration_microseconds{handler="/api/query",quantile="0.9"} 0
http_request_duration_microseconds{handler="/api/query",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/api/query"} 0
http_request_duration_microseconds_count{handler="/api/query"} 0
http_request_duration_microseconds{handler="/api/query_range",quantile="0.5"} 0
http_request_duration_microseconds{handler="/api/query_range",quantile="0.9"} 0
http_request_duration_microseconds{handler="/api/query_range",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/api/query_range"} 0
http_request_duration_microseconds_count{handler="/api/query_range"} 0
http_request_duration_microseconds{handler="/api/targets",quantile="0.5"} 0
http_request_duration_microseconds{handler="/api/targets",quantile="0.9"} 0
http_request_duration_microseconds{handler="/api/targets",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/api/targets"} 0
http_request_duration_microseconds_count{handler="/api/targets"} 0
http_request_duration_microseconds{handler="/consoles/",quantile="0.5"} 0
http_request_duration_microseconds{handler="/consoles/",quantile="0.9"} 0
http_request_duration_microseconds{handler="/consoles/",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/consoles/"} 0
http_request_duration_microseconds_count{handler="/consoles/"} 0
http_request_duration_microseconds{handler="/graph",quantile="0.5"} 0
http_request_duration_microseconds{handler="/graph",quantile="0.9"} 0
http_request_duration_microseconds{handler="/graph",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/graph"} 0
http_request_duration_microseconds_count{handler="/graph"} 0
http_request_duration_microseconds{handler="/heap",quantile="0.5"} 0
http_request_duration_microseconds{handler="/heap",quantile="0.9"} 0
http_request_duration_microseconds{handler="/heap",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/heap"} 0
http_request_duration_microseconds_count{handler="/heap"} 0
http_request_duration_microseconds{handler="/static/",quantile="0.5"} 0
http_request_duration_microseconds{handler="/static/",quantile="0.9"} 0
http_request_duration_microseconds{handler="/static/",quantile="0.99"} 0
http_request_duration_microseconds_sum{handler="/static/"} 0
http_request_duration_microseconds_count{handler="/static/"} 0
http_request_duration_microseconds{handler="prometheus",quantile="0.5"} 1307.275
http_request_duration_microseconds{handler="prometheus",quantile="0.9"} 1858.632
http_request_duration_microseconds{handler="prometheus",quantile="0.99"} 3087.384
http_request_duration_microseconds_sum{handler="prometheus"} 179886.5000000001
http_request_duration_microseconds_count{handler="prometheus"} 119
# HELP http_request_size_bytes The HTTP request sizes in bytes.
# TYPE http_request_size_bytes summary
http_request_size_bytes{handler="/",quantile="0.5"} 0
http_request_size_bytes{handler="/",quantile="0.9"} 0
http_request_size_bytes{handler="/",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/"} 0
http_request_size_bytes_count{handler="/"} 0
http_request_size_bytes{handler="/alerts",quantile="0.5"} 0
http_request_size_bytes{handler="/alerts",quantile="0.9"} 0
http_request_size_bytes{handler="/alerts",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/alerts"} 0
http_request_size_bytes_count{handler="/alerts"} 0
http_request_size_bytes{handler="/api/metrics",quantile="0.5"} 0
http_request_size_bytes{handler="/api/metrics",quantile="0.9"} 0
http_request_size_bytes{handler="/api/metrics",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/api/metrics"} 0
http_request_size_bytes_count{handler="/api/metrics"} 0
http_request_size_bytes{handler="/api/query",quantile="0.5"} 0
http_request_size_bytes{handler="/api/query",quantile="0.9"} 0
http_request_size_bytes{handler="/api/query",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/api/query"} 0
http_request_size_bytes_count{handler="/api/query"} 0
http_request_size_bytes{handler="/api/query_range",quantile="0.5"} 0
http_request_size_bytes{handler="/api/query_range",quantile="0.9"} 0
http_request_size_bytes{handler="/api/query_range",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/api/query_range"} 0
http_request_size_bytes_count{handler="/api/query_range"} 0
http_request_size_bytes{handler="/api/targets",quantile="0.5"} 0
http_request_size_bytes{handler="/api/targets",quantile="0.9"} 0
http_request_size_bytes{handler="/api/targets",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/api/targets"} 0
http_request_size_bytes_count{handler="/api/targets"} 0
http_request_size_bytes{handler="/consoles/",quantile="0.5"} 0
http_request_size_bytes{handler="/consoles/",quantile="0.9"} 0
http_request_size_bytes{handler="/consoles/",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/consoles/"} 0
http_request_size_bytes_count{handler="/consoles/"} 0
http_request_size_bytes{handler="/graph",quantile="0.5"} 0
http_request_size_bytes{handler="/graph",quantile="0.9"} 0
http_request_size_bytes{handler="/graph",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/graph"} 0
http_request_size_bytes_count{handler="/graph"} 0
http_request_size_bytes{handler="/heap",quantile="0.5"} 0
http_request_size_bytes{handler="/heap",quantile="0.9"} 0
http_request_size_bytes{handler="/heap",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/heap"} 0
http_request_size_bytes_count{handler="/heap"} 0
http_request_size_bytes{handler="/static/",quantile="0.5"} 0
http_request_size_bytes{handler="/static/",quantile="0.9"} 0
http_request_size_bytes{handler="/static/",quantile="0.99"} 0
http_request_size_bytes_sum{handler="/static/"} 0
http_request_size_bytes_count{handler="/static/"} 0
http_request_size_bytes{handler="prometheus",quantile="0.5"} 291
http_request_size_bytes{handler="prometheus",quantile="0.9"} 291
http_request_size_bytes{handler="prometheus",quantile="0.99"} 291
http_request_size_bytes_sum{handler="prometheus"} 34488
http_request_size_bytes_count{handler="prometheus"} 119
# HELP http_requests_total Total number of HTTP requests made.
# TYPE http_requests_total counter
http_requests_total{code="200",handler="prometheus",method="get"} 119
# HELP http_response_size_bytes The HTTP response sizes in bytes.
# TYPE http_response_size_bytes summary
http_response_size_bytes{handler="/",quantile="0.5"} 0
http_response_size_bytes{handler="/",quantile="0.9"} 0
http_response_size_bytes{handler="/",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/"} 0
http_response_size_bytes_count{handler="/"} 0
http_response_size_bytes{handler="/alerts",quantile="0.5"} 0
http_response_size_bytes{handler="/alerts",quantile="0.9"} 0
http_response_size_bytes{handler="/alerts",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/alerts"} 0
http_response_size_bytes_count{handler="/alerts"} 0
http_response_size_bytes{handler="/api/metrics",quantile="0.5"} 0
http_response_size_bytes{handler="/api/metrics",quantile="0.9"} 0
http_response_size_bytes{handler="/api/metrics",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/api/metrics"} 0
http_response_size_bytes_count{handler="/api/metrics"} 0
http_response_size_bytes{handler="/api/query",quantile="0.5"} 0
http_response_size_bytes{handler="/api/query",quantile="0.9"} 0
http_response_size_bytes{handler="/api/query",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/api/query"} 0
http_response_size_bytes_count{handler="/api/query"} 0
http_response_size_bytes{handler="/api/query_range",quantile="0.5"} 0
http_response_size_bytes{handler="/api/query_range",quantile="0.9"} 0
http_response_size_bytes{handler="/api/query_range",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/api/query_range"} 0
http_response_size_bytes_count{handler="/api/query_range"} 0
http_response_size_bytes{handler="/api/targets",quantile="0.5"} 0
http_response_size_bytes{handler="/api/targets",quantile="0.9"} 0
http_response_size_bytes{handler="/api/targets",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/api/targets"} 0
http_response_size_bytes_count{handler="/api/targets"} 0
http_response_size_bytes{handler="/consoles/",quantile="0.5"} 0
http_response_size_bytes{handler="/consoles/",quantile="0.9"} 0
http_response_size_bytes{handler="/consoles/",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/consoles/"} 0
http_response_size_bytes_count{handler="/consoles/"} 0
http_response_size_bytes{handler="/graph",quantile="0.5"} 0
http_response_size_bytes{handler="/graph",quantile="0.9"} 0
http_response_size_bytes{handler="/graph",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/graph"} 0
http_response_size_bytes_count{handler="/graph"} 0
http_response_size_bytes{handler="/heap",quantile="0.5"} 0
http_response_size_bytes{handler="/heap",quantile="0.9"} 0
http_response_size_bytes{handler="/heap",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/heap"} 0
http_response_size_bytes_count{handler="/heap"} 0
http_response_size_bytes{handler="/static/",quantile="0.5"} 0
http_response_size_bytes{handler="/static/",quantile="0.9"} 0
http_response_size_bytes{handler="/static/",quantile="0.99"} 0
http_response_size_bytes_sum{handler="/static/"} 0
http_response_size_bytes_count{handler="/static/"} 0
http_response_size_bytes{handler="prometheus",quantile="0.5"} 2049
http_response_size_bytes{handler="prometheus",quantile="0.9"} 2058
http_response_size_bytes{handler="prometheus",quantile="0.99"} 2064
http_response_size_bytes_sum{handler="prometheus"} 247001
http_response_size_bytes_count{handler="prometheus"} 119
# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.
# TYPE process_cpu_seconds_total counter
process_cpu_seconds_total 0.55
# HELP go_goroutines Number of goroutines that currently exist.
# TYPE go_goroutines gauge
go_goroutines 70
# HELP process_max_fds Maximum number of open file descriptors.
# TYPE process_max_fds gauge
process_max_fds 8192
# HELP process_open_fds Number of open file descriptors.
# TYPE process_open_fds gauge
process_open_fds 29
# HELP process_resident_memory_bytes Resident memory size in bytes.
# TYPE process_resident_memory_bytes gauge
process_resident_memory_bytes 5.3870592e+07
# HELP process_start_time_seconds Start time of the process since unix epoch in seconds.
# TYPE process_start_time_seconds gauge
process_start_time_seconds 1.42236894836e+09
# HELP process_virtual_memory_bytes Virtual memory size in bytes.
# TYPE process_virtual_memory_bytes gauge
process_virtual_memory_bytes 5.41478912e+08
# HELP prometheus_dns_sd_lookup_failures_total The number of DNS-SD lookup failures.
# TYPE prometheus_dns_sd_lookup_failures_total counter
prometheus_dns_sd_lookup_failures_total 0
# HELP prometheus_dns_sd_lookups_total The number of DNS-SD lookups.
# TYPE prometheus_dns_sd_lookups_total counter
prometheus_dns_sd_lookups_total 7
# HELP prometheus_evaluator_duration_milliseconds The duration for all evaluations to execute.
# TYPE prometheus_evaluator_duration_milliseconds summary
prometheus_evaluator_duration_milliseconds{quantile="0.01"} 0
prometheus_evaluator_duration_milliseconds{quantile="0.05"} 0
prometheus_evaluator_duration_milliseconds{quantile="0.5"} 0
prometheus_evaluator_duration_milliseconds{quantile="0.9"} 1
prometheus_evaluator_duration_milliseconds{quantile="0.99"} 1
prometheus_evaluator_duration_milliseconds_sum 12
prometheus_evaluator_duration_milliseconds_count 23
# HELP prometheus_local_storage_checkpoint_duration_milliseconds The duration (in milliseconds) it took to checkpoint in-memory metrics and head chunks.
# TYPE prometheus_local_storage_checkpoint_duration_milliseconds gauge
prometheus_local_storage_checkpoint_duration_milliseconds 0
# HELP prometheus_local_storage_chunk_ops_total The total number of chunk operations by their type.
# TYPE prometheus_local_storage_chunk_ops_total counter
prometheus_local_storage_chunk_ops_total{type="create"} 598
prometheus_local_storage_chunk_ops_total{type="persist"} 174
prometheus_local_storage_chunk_ops_total{type="pin"} 920
prometheus_local_storage_chunk_ops_total{type="transcode"} 415
prometheus_local_storage_chunk_ops_total{type="unpin"} 920
# HELP prometheus_local_storage_indexing_batch_latency_milliseconds Quantiles for batch indexing latencies in milliseconds.
# TYPE prometheus_local_storage_indexing_batch_latency_milliseconds summary
prometheus_local_storage_indexing_batch_latency_milliseconds{quantile="0.5"} 0
prometheus_local_storage_indexing_batch_latency_milliseconds{quantile="0.9"} 0
prometheus_local_storage_indexing_batch_latency_milliseconds{quantile="0.99"} 0
prometheus_local_storage_indexing_batch_latency_milliseconds_sum 0
prometheus_local_storage_indexing_batch_latency_milliseconds_count 1
# HELP prometheus_local_storage_indexing_batch_sizes Quantiles for indexing batch sizes (number of metrics per batch).
# TYPE prometheus_local_storage_indexing_batch_sizes summary
prometheus_local_storage_indexing_batch_sizes{quantile="0.5"} 2
prometheus_local_storage_indexing_batch_sizes{quantile="0.9"} 2
prometheus_local_storage_indexing_batch_sizes{quantile="0.99"} 2
prometheus_local_storage_indexing_batch_sizes_sum 2
prometheus_local_storage_indexing_batch_sizes_count 1
# HELP prometheus_local_storage_indexing_queue_capacity The capacity of the indexing queue.
# TYPE prometheus_local_storage_indexing_queue_capacity gauge
prometheus_local_storage_indexing_queue_capacity 16384
# HELP prometheus_local_storage_indexing_queue_length The number of metrics waiting to be indexed.
# TYPE prometheus_local_storage_indexing_queue_length gauge
prometheus_local_storage_indexing_queue_length 0
# HELP prometheus_local_storage_ingested_samples_total The total number of samples ingested.
# TYPE prometheus_local_storage_ingested_samples_total counter
prometheus_local_storage_ingested_samples_total 30473
# HELP prometheus_local_storage_invalid_preload_requests_total The total number of preload requests referring to a non-existent series. This is an indication of outdated label indexes.
# TYPE prometheus_local_storage_invalid_preload_requests_total counter
prometheus_local_storage_invalid_preload_requests_total 0
# HELP prometheus_local_storage_memory_chunkdescs The current number of chunk descriptors in memory.
# TYPE prometheus_local_storage_memory_chunkdescs gauge
prometheus_local_storage_memory_chunkdescs 1059
# HELP prometheus_local_storage_memory_chunks The current number of chunks in memory, excluding cloned chunks (i.e. chunks without a descriptor).
# TYPE prometheus_local_storage_memory_chunks gauge
prometheus_local_storage_memory_chunks 1020
# HELP prometheus_local_storage_memory_series The current number of series in memory.
# TYPE prometheus_local_storage_memory_series gauge
prometheus_local_storage_memory_series 424
# HELP prometheus_local_storage_persist_latency_microseconds A summary of latencies for persisting each chunk.
# TYPE prometheus_local_storage_persist_latency_microseconds summary
prometheus_local_storage_persist_latency_microseconds{quantile="0.5"} 30.377
prometheus_local_storage_persist_latency_microseconds{quantile="0.9"} 203.539
prometheus_local_storage_persist_latency_microseconds{quantile="0.99"} 2626.463
prometheus_local_storage_persist_latency_microseconds_sum 20424.415
prometheus_local_storage_persist_latency_microseconds_count 174
# HELP prometheus_local_storage_persist_queue_capacity The total capacity of the persist queue.
# TYPE prometheus_local_storage_persist_queue_capacity gauge
prometheus_local_storage_persist_queue_capacity 1024
# HELP prometheus_local_storage_persist_queue_length The current number of chunks waiting in the persist queue.
# TYPE prometheus_local_storage_persist_queue_length gauge
prometheus_local_storage_persist_queue_length 0
# HELP prometheus_local_storage_series_ops_total The total number of series operations by their type.
# TYPE prometheus_local_storage_series_ops_total counter
prometheus_local_storage_series_ops_total{type="create"} 2
prometheus_local_storage_series_ops_total{type="maintenance_in_memory"} 11
# HELP prometheus_notifications_latency_milliseconds Latency quantiles for sending alert notifications (not including dropped notifications).
# TYPE prometheus_notifications_latency_milliseconds summary
prometheus_notifications_latency_milliseconds{quantile="0.5"} 0
prometheus_notifications_latency_milliseconds{quantile="0.9"} 0
prometheus_notifications_latency_milliseconds{quantile="0.99"} 0
prometheus_notifications_latency_milliseconds_sum 0
prometheus_notifications_latency_milliseconds_count 0
# HELP prometheus_notifications_queue_capacity The capacity of the alert notifications queue.
# TYPE prometheus_notifications_queue_capacity gauge
prometheus_notifications_queue_capacity 100
# HELP prometheus_notifications_queue_length The number of alert notifications in the queue.
# TYPE prometheus_notifications_queue_length gauge
prometheus_notifications_queue_length 0
# HELP prometheus_rule_evaluation_duration_milliseconds The duration for a rule to execute.
# TYPE prometheus_rule_evaluation_duration_milliseconds summary
prometheus_rule_evaluation_duration_milliseconds{rule_type="alerting",quantile="0.5"} 0
prometheus_rule_evaluation_duration_milliseconds{rule_type="alerting",quantile="0.9"} 0
prometheus_rule_evaluation_duration_milliseconds{rule_type="alerting",quantile="0.99"} 2
prometheus_rule_evaluation_duration_milliseconds_sum{rule_type="alerting"} 12
prometheus_rule_evaluation_duration_milliseconds_count{rule_type="alerting"} 115
prometheus_rule_evaluation_duration_milliseconds{rule_type="recording",quantile="0.5"} 0
prometheus_rule_evaluation_duration_milliseconds{rule_type="recording",quantile="0.9"} 0
prometheus_rule_evaluation_duration_milliseconds{rule_type="recording",quantile="0.99"} 3
prometheus_rule_evaluation_duration_milliseconds_sum{rule_type="recording"} 15
prometheus_rule_evaluation_duration_milliseconds_count{rule_type="recording"} 115
# HELP prometheus_rule_evaluation_failures_total The total number of rule evaluation failures.
# TYPE prometheus_rule_evaluation_failures_total counter
prometheus_rule_evaluation_failures_total 0
# HELP prometheus_samples_queue_capacity Capacity of the queue for unwritten samples.
# TYPE prometheus_samples_queue_capacity gauge
prometheus_samples_queue_capacity 4096
# HELP prometheus_samples_queue_length Current number of items in the queue for unwritten samples. Each item comprises all samples exposed by one target as one metric family (i.e. metrics of the same name).
# TYPE prometheus_samples_queue_length gauge
prometheus_samples_queue_length 0
# HELP prometheus_target_interval_length_seconds Actual intervals between scrapes.
# TYPE prometheus_target_interval_length_seconds summary
prometheus_target_interval_length_seconds{interval="15s",quantile="0.01"} 14
prometheus_target_interval_length_seconds{interval="15s",quantile="0.05"} 14
prometheus_target_interval_length_seconds{interval="15s",quantile="0.5"} 15
prometheus_target_interval_length_seconds{interval="15s",quantile="0.9"} 15
prometheus_target_interval_length_seconds{interval="15s",quantile="0.99"} 15
prometheus_target_interval_length_seconds_sum{interval="15s"} 175
prometheus_target_interval_length_seconds_count{interval="15s"} 12
prometheus_target_interval_length_seconds{interval="1s",quantile="0.01"} 0
prometheus_target_interval_length_seconds{interval="1s",quantile="0.05"} 0
prometheus_target_interval_length_seconds{interval="1s",quantile="0.5"} 0
prometheus_target_interval_length_seconds{interval="1s",quantile="0.9"} 1
prometheus_target_interval_length_seconds{interval="1s",quantile="0.99"} 1
prometheus_target_interval_length_seconds_sum{interval="1s"} 55
prometheus_target_interval_length_seconds_count{interval="1s"} 117

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vendor/github.com/prometheus/common/expfmt/text_create.go generated vendored Normal file
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// Copyright 2014 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 expfmt
import (
"fmt"
"io"
"math"
"strings"
dto "github.com/prometheus/client_model/go"
"github.com/prometheus/common/model"
)
// MetricFamilyToText converts a MetricFamily proto message into text format and
// writes the resulting lines to 'out'. It returns the number of bytes written
// and any error encountered. The output will have the same order as the input,
// no further sorting is performed. Furthermore, this function assumes the input
// is already sanitized and does not perform any sanity checks. If the input
// contains duplicate metrics or invalid metric or label names, the conversion
// will result in invalid text format output.
//
// This method fulfills the type 'prometheus.encoder'.
func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) {
var written int
// Fail-fast checks.
if len(in.Metric) == 0 {
return written, fmt.Errorf("MetricFamily has no metrics: %s", in)
}
name := in.GetName()
if name == "" {
return written, fmt.Errorf("MetricFamily has no name: %s", in)
}
// Comments, first HELP, then TYPE.
if in.Help != nil {
n, err := fmt.Fprintf(
out, "# HELP %s %s\n",
name, escapeString(*in.Help, false),
)
written += n
if err != nil {
return written, err
}
}
metricType := in.GetType()
n, err := fmt.Fprintf(
out, "# TYPE %s %s\n",
name, strings.ToLower(metricType.String()),
)
written += n
if err != nil {
return written, err
}
// Finally the samples, one line for each.
for _, metric := range in.Metric {
switch metricType {
case dto.MetricType_COUNTER:
if metric.Counter == nil {
return written, fmt.Errorf(
"expected counter in metric %s %s", name, metric,
)
}
n, err = writeSample(
name, metric, "", "",
metric.Counter.GetValue(),
out,
)
case dto.MetricType_GAUGE:
if metric.Gauge == nil {
return written, fmt.Errorf(
"expected gauge in metric %s %s", name, metric,
)
}
n, err = writeSample(
name, metric, "", "",
metric.Gauge.GetValue(),
out,
)
case dto.MetricType_UNTYPED:
if metric.Untyped == nil {
return written, fmt.Errorf(
"expected untyped in metric %s %s", name, metric,
)
}
n, err = writeSample(
name, metric, "", "",
metric.Untyped.GetValue(),
out,
)
case dto.MetricType_SUMMARY:
if metric.Summary == nil {
return written, fmt.Errorf(
"expected summary in metric %s %s", name, metric,
)
}
for _, q := range metric.Summary.Quantile {
n, err = writeSample(
name, metric,
model.QuantileLabel, fmt.Sprint(q.GetQuantile()),
q.GetValue(),
out,
)
written += n
if err != nil {
return written, err
}
}
n, err = writeSample(
name+"_sum", metric, "", "",
metric.Summary.GetSampleSum(),
out,
)
if err != nil {
return written, err
}
written += n
n, err = writeSample(
name+"_count", metric, "", "",
float64(metric.Summary.GetSampleCount()),
out,
)
case dto.MetricType_HISTOGRAM:
if metric.Histogram == nil {
return written, fmt.Errorf(
"expected histogram in metric %s %s", name, metric,
)
}
infSeen := false
for _, q := range metric.Histogram.Bucket {
n, err = writeSample(
name+"_bucket", metric,
model.BucketLabel, fmt.Sprint(q.GetUpperBound()),
float64(q.GetCumulativeCount()),
out,
)
written += n
if err != nil {
return written, err
}
if math.IsInf(q.GetUpperBound(), +1) {
infSeen = true
}
}
if !infSeen {
n, err = writeSample(
name+"_bucket", metric,
model.BucketLabel, "+Inf",
float64(metric.Histogram.GetSampleCount()),
out,
)
if err != nil {
return written, err
}
written += n
}
n, err = writeSample(
name+"_sum", metric, "", "",
metric.Histogram.GetSampleSum(),
out,
)
if err != nil {
return written, err
}
written += n
n, err = writeSample(
name+"_count", metric, "", "",
float64(metric.Histogram.GetSampleCount()),
out,
)
default:
return written, fmt.Errorf(
"unexpected type in metric %s %s", name, metric,
)
}
written += n
if err != nil {
return written, err
}
}
return written, nil
}
// writeSample writes a single sample in text format to out, given the metric
// name, the metric proto message itself, optionally an additional label name
// and value (use empty strings if not required), and the value. The function
// returns the number of bytes written and any error encountered.
func writeSample(
name string,
metric *dto.Metric,
additionalLabelName, additionalLabelValue string,
value float64,
out io.Writer,
) (int, error) {
var written int
n, err := fmt.Fprint(out, name)
written += n
if err != nil {
return written, err
}
n, err = labelPairsToText(
metric.Label,
additionalLabelName, additionalLabelValue,
out,
)
written += n
if err != nil {
return written, err
}
n, err = fmt.Fprintf(out, " %v", value)
written += n
if err != nil {
return written, err
}
if metric.TimestampMs != nil {
n, err = fmt.Fprintf(out, " %v", *metric.TimestampMs)
written += n
if err != nil {
return written, err
}
}
n, err = out.Write([]byte{'\n'})
written += n
if err != nil {
return written, err
}
return written, nil
}
// labelPairsToText converts a slice of LabelPair proto messages plus the
// explicitly given additional label pair into text formatted as required by the
// text format and writes it to 'out'. An empty slice in combination with an
// empty string 'additionalLabelName' results in nothing being
// written. Otherwise, the label pairs are written, escaped as required by the
// text format, and enclosed in '{...}'. The function returns the number of
// bytes written and any error encountered.
func labelPairsToText(
in []*dto.LabelPair,
additionalLabelName, additionalLabelValue string,
out io.Writer,
) (int, error) {
if len(in) == 0 && additionalLabelName == "" {
return 0, nil
}
var written int
separator := '{'
for _, lp := range in {
n, err := fmt.Fprintf(
out, `%c%s="%s"`,
separator, lp.GetName(), escapeString(lp.GetValue(), true),
)
written += n
if err != nil {
return written, err
}
separator = ','
}
if additionalLabelName != "" {
n, err := fmt.Fprintf(
out, `%c%s="%s"`,
separator, additionalLabelName,
escapeString(additionalLabelValue, true),
)
written += n
if err != nil {
return written, err
}
}
n, err := out.Write([]byte{'}'})
written += n
if err != nil {
return written, err
}
return written, nil
}
var (
escape = strings.NewReplacer("\\", `\\`, "\n", `\n`)
escapeWithDoubleQuote = strings.NewReplacer("\\", `\\`, "\n", `\n`, "\"", `\"`)
)
// escapeString replaces '\' by '\\', new line character by '\n', and - if
// includeDoubleQuote is true - '"' by '\"'.
func escapeString(v string, includeDoubleQuote bool) string {
if includeDoubleQuote {
return escapeWithDoubleQuote.Replace(v)
}
return escape.Replace(v)
}

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vendor/github.com/prometheus/common/expfmt/text_create_test.go generated vendored Normal file
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// Copyright 2014 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 expfmt
import (
"bytes"
"math"
"strings"
"testing"
"github.com/golang/protobuf/proto"
dto "github.com/prometheus/client_model/go"
)
func testCreate(t testing.TB) {
var scenarios = []struct {
in *dto.MetricFamily
out string
}{
// 0: Counter, NaN as value, timestamp given.
{
in: &dto.MetricFamily{
Name: proto.String("name"),
Help: proto.String("two-line\n doc str\\ing"),
Type: dto.MetricType_COUNTER.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("labelname"),
Value: proto.String("val1"),
},
&dto.LabelPair{
Name: proto.String("basename"),
Value: proto.String("basevalue"),
},
},
Counter: &dto.Counter{
Value: proto.Float64(math.NaN()),
},
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("labelname"),
Value: proto.String("val2"),
},
&dto.LabelPair{
Name: proto.String("basename"),
Value: proto.String("basevalue"),
},
},
Counter: &dto.Counter{
Value: proto.Float64(.23),
},
TimestampMs: proto.Int64(1234567890),
},
},
},
out: `# HELP name two-line\n doc str\\ing
# TYPE name counter
name{labelname="val1",basename="basevalue"} NaN
name{labelname="val2",basename="basevalue"} 0.23 1234567890
`,
},
// 1: Gauge, some escaping required, +Inf as value, multi-byte characters in label values.
{
in: &dto.MetricFamily{
Name: proto.String("gauge_name"),
Help: proto.String("gauge\ndoc\nstr\"ing"),
Type: dto.MetricType_GAUGE.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("name_1"),
Value: proto.String("val with\nnew line"),
},
&dto.LabelPair{
Name: proto.String("name_2"),
Value: proto.String("val with \\backslash and \"quotes\""),
},
},
Gauge: &dto.Gauge{
Value: proto.Float64(math.Inf(+1)),
},
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("name_1"),
Value: proto.String("Björn"),
},
&dto.LabelPair{
Name: proto.String("name_2"),
Value: proto.String("佖佥"),
},
},
Gauge: &dto.Gauge{
Value: proto.Float64(3.14E42),
},
},
},
},
out: `# HELP gauge_name gauge\ndoc\nstr"ing
# TYPE gauge_name gauge
gauge_name{name_1="val with\nnew line",name_2="val with \\backslash and \"quotes\""} +Inf
gauge_name{name_1="Björn",name_2="佖佥"} 3.14e+42
`,
},
// 2: Untyped, no help, one sample with no labels and -Inf as value, another sample with one label.
{
in: &dto.MetricFamily{
Name: proto.String("untyped_name"),
Type: dto.MetricType_UNTYPED.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Untyped: &dto.Untyped{
Value: proto.Float64(math.Inf(-1)),
},
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("name_1"),
Value: proto.String("value 1"),
},
},
Untyped: &dto.Untyped{
Value: proto.Float64(-1.23e-45),
},
},
},
},
out: `# TYPE untyped_name untyped
untyped_name -Inf
untyped_name{name_1="value 1"} -1.23e-45
`,
},
// 3: Summary.
{
in: &dto.MetricFamily{
Name: proto.String("summary_name"),
Help: proto.String("summary docstring"),
Type: dto.MetricType_SUMMARY.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Summary: &dto.Summary{
SampleCount: proto.Uint64(42),
SampleSum: proto.Float64(-3.4567),
Quantile: []*dto.Quantile{
&dto.Quantile{
Quantile: proto.Float64(0.5),
Value: proto.Float64(-1.23),
},
&dto.Quantile{
Quantile: proto.Float64(0.9),
Value: proto.Float64(.2342354),
},
&dto.Quantile{
Quantile: proto.Float64(0.99),
Value: proto.Float64(0),
},
},
},
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("name_1"),
Value: proto.String("value 1"),
},
&dto.LabelPair{
Name: proto.String("name_2"),
Value: proto.String("value 2"),
},
},
Summary: &dto.Summary{
SampleCount: proto.Uint64(4711),
SampleSum: proto.Float64(2010.1971),
Quantile: []*dto.Quantile{
&dto.Quantile{
Quantile: proto.Float64(0.5),
Value: proto.Float64(1),
},
&dto.Quantile{
Quantile: proto.Float64(0.9),
Value: proto.Float64(2),
},
&dto.Quantile{
Quantile: proto.Float64(0.99),
Value: proto.Float64(3),
},
},
},
},
},
},
out: `# HELP summary_name summary docstring
# TYPE summary_name summary
summary_name{quantile="0.5"} -1.23
summary_name{quantile="0.9"} 0.2342354
summary_name{quantile="0.99"} 0
summary_name_sum -3.4567
summary_name_count 42
summary_name{name_1="value 1",name_2="value 2",quantile="0.5"} 1
summary_name{name_1="value 1",name_2="value 2",quantile="0.9"} 2
summary_name{name_1="value 1",name_2="value 2",quantile="0.99"} 3
summary_name_sum{name_1="value 1",name_2="value 2"} 2010.1971
summary_name_count{name_1="value 1",name_2="value 2"} 4711
`,
},
// 4: Histogram
{
in: &dto.MetricFamily{
Name: proto.String("request_duration_microseconds"),
Help: proto.String("The response latency."),
Type: dto.MetricType_HISTOGRAM.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Histogram: &dto.Histogram{
SampleCount: proto.Uint64(2693),
SampleSum: proto.Float64(1756047.3),
Bucket: []*dto.Bucket{
&dto.Bucket{
UpperBound: proto.Float64(100),
CumulativeCount: proto.Uint64(123),
},
&dto.Bucket{
UpperBound: proto.Float64(120),
CumulativeCount: proto.Uint64(412),
},
&dto.Bucket{
UpperBound: proto.Float64(144),
CumulativeCount: proto.Uint64(592),
},
&dto.Bucket{
UpperBound: proto.Float64(172.8),
CumulativeCount: proto.Uint64(1524),
},
&dto.Bucket{
UpperBound: proto.Float64(math.Inf(+1)),
CumulativeCount: proto.Uint64(2693),
},
},
},
},
},
},
out: `# HELP request_duration_microseconds The response latency.
# TYPE request_duration_microseconds histogram
request_duration_microseconds_bucket{le="100"} 123
request_duration_microseconds_bucket{le="120"} 412
request_duration_microseconds_bucket{le="144"} 592
request_duration_microseconds_bucket{le="172.8"} 1524
request_duration_microseconds_bucket{le="+Inf"} 2693
request_duration_microseconds_sum 1.7560473e+06
request_duration_microseconds_count 2693
`,
},
// 5: Histogram with missing +Inf bucket.
{
in: &dto.MetricFamily{
Name: proto.String("request_duration_microseconds"),
Help: proto.String("The response latency."),
Type: dto.MetricType_HISTOGRAM.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Histogram: &dto.Histogram{
SampleCount: proto.Uint64(2693),
SampleSum: proto.Float64(1756047.3),
Bucket: []*dto.Bucket{
&dto.Bucket{
UpperBound: proto.Float64(100),
CumulativeCount: proto.Uint64(123),
},
&dto.Bucket{
UpperBound: proto.Float64(120),
CumulativeCount: proto.Uint64(412),
},
&dto.Bucket{
UpperBound: proto.Float64(144),
CumulativeCount: proto.Uint64(592),
},
&dto.Bucket{
UpperBound: proto.Float64(172.8),
CumulativeCount: proto.Uint64(1524),
},
},
},
},
},
},
out: `# HELP request_duration_microseconds The response latency.
# TYPE request_duration_microseconds histogram
request_duration_microseconds_bucket{le="100"} 123
request_duration_microseconds_bucket{le="120"} 412
request_duration_microseconds_bucket{le="144"} 592
request_duration_microseconds_bucket{le="172.8"} 1524
request_duration_microseconds_bucket{le="+Inf"} 2693
request_duration_microseconds_sum 1.7560473e+06
request_duration_microseconds_count 2693
`,
},
// 6: No metric type, should result in default type Counter.
{
in: &dto.MetricFamily{
Name: proto.String("name"),
Help: proto.String("doc string"),
Metric: []*dto.Metric{
&dto.Metric{
Counter: &dto.Counter{
Value: proto.Float64(math.Inf(-1)),
},
},
},
},
out: `# HELP name doc string
# TYPE name counter
name -Inf
`,
},
}
for i, scenario := range scenarios {
out := bytes.NewBuffer(make([]byte, 0, len(scenario.out)))
n, err := MetricFamilyToText(out, scenario.in)
if err != nil {
t.Errorf("%d. error: %s", i, err)
continue
}
if expected, got := len(scenario.out), n; expected != got {
t.Errorf(
"%d. expected %d bytes written, got %d",
i, expected, got,
)
}
if expected, got := scenario.out, out.String(); expected != got {
t.Errorf(
"%d. expected out=%q, got %q",
i, expected, got,
)
}
}
}
func TestCreate(t *testing.T) {
testCreate(t)
}
func BenchmarkCreate(b *testing.B) {
for i := 0; i < b.N; i++ {
testCreate(b)
}
}
func testCreateError(t testing.TB) {
var scenarios = []struct {
in *dto.MetricFamily
err string
}{
// 0: No metric.
{
in: &dto.MetricFamily{
Name: proto.String("name"),
Help: proto.String("doc string"),
Type: dto.MetricType_COUNTER.Enum(),
Metric: []*dto.Metric{},
},
err: "MetricFamily has no metrics",
},
// 1: No metric name.
{
in: &dto.MetricFamily{
Help: proto.String("doc string"),
Type: dto.MetricType_UNTYPED.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Untyped: &dto.Untyped{
Value: proto.Float64(math.Inf(-1)),
},
},
},
},
err: "MetricFamily has no name",
},
// 2: Wrong type.
{
in: &dto.MetricFamily{
Name: proto.String("name"),
Help: proto.String("doc string"),
Type: dto.MetricType_COUNTER.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Untyped: &dto.Untyped{
Value: proto.Float64(math.Inf(-1)),
},
},
},
},
err: "expected counter in metric",
},
}
for i, scenario := range scenarios {
var out bytes.Buffer
_, err := MetricFamilyToText(&out, scenario.in)
if err == nil {
t.Errorf("%d. expected error, got nil", i)
continue
}
if expected, got := scenario.err, err.Error(); strings.Index(got, expected) != 0 {
t.Errorf(
"%d. expected error starting with %q, got %q",
i, expected, got,
)
}
}
}
func TestCreateError(t *testing.T) {
testCreateError(t)
}
func BenchmarkCreateError(b *testing.B) {
for i := 0; i < b.N; i++ {
testCreateError(b)
}
}

757
vendor/github.com/prometheus/common/expfmt/text_parse.go generated vendored Normal file
View file

@ -0,0 +1,757 @@
// Copyright 2014 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 expfmt
import (
"bufio"
"bytes"
"fmt"
"io"
"math"
"strconv"
"strings"
dto "github.com/prometheus/client_model/go"
"github.com/golang/protobuf/proto"
"github.com/prometheus/common/model"
)
// A stateFn is a function that represents a state in a state machine. By
// executing it, the state is progressed to the next state. The stateFn returns
// another stateFn, which represents the new state. The end state is represented
// by nil.
type stateFn func() stateFn
// ParseError signals errors while parsing the simple and flat text-based
// exchange format.
type ParseError struct {
Line int
Msg string
}
// Error implements the error interface.
func (e ParseError) Error() string {
return fmt.Sprintf("text format parsing error in line %d: %s", e.Line, e.Msg)
}
// TextParser is used to parse the simple and flat text-based exchange format. Its
// zero value is ready to use.
type TextParser struct {
metricFamiliesByName map[string]*dto.MetricFamily
buf *bufio.Reader // Where the parsed input is read through.
err error // Most recent error.
lineCount int // Tracks the line count for error messages.
currentByte byte // The most recent byte read.
currentToken bytes.Buffer // Re-used each time a token has to be gathered from multiple bytes.
currentMF *dto.MetricFamily
currentMetric *dto.Metric
currentLabelPair *dto.LabelPair
// The remaining member variables are only used for summaries/histograms.
currentLabels map[string]string // All labels including '__name__' but excluding 'quantile'/'le'
// Summary specific.
summaries map[uint64]*dto.Metric // Key is created with LabelsToSignature.
currentQuantile float64
// Histogram specific.
histograms map[uint64]*dto.Metric // Key is created with LabelsToSignature.
currentBucket float64
// These tell us if the currently processed line ends on '_count' or
// '_sum' respectively and belong to a summary/histogram, representing the sample
// count and sum of that summary/histogram.
currentIsSummaryCount, currentIsSummarySum bool
currentIsHistogramCount, currentIsHistogramSum bool
}
// TextToMetricFamilies reads 'in' as the simple and flat text-based exchange
// format and creates MetricFamily proto messages. It returns the MetricFamily
// proto messages in a map where the metric names are the keys, along with any
// error encountered.
//
// If the input contains duplicate metrics (i.e. lines with the same metric name
// and exactly the same label set), the resulting MetricFamily will contain
// duplicate Metric proto messages. Similar is true for duplicate label
// names. Checks for duplicates have to be performed separately, if required.
// Also note that neither the metrics within each MetricFamily are sorted nor
// the label pairs within each Metric. Sorting is not required for the most
// frequent use of this method, which is sample ingestion in the Prometheus
// server. However, for presentation purposes, you might want to sort the
// metrics, and in some cases, you must sort the labels, e.g. for consumption by
// the metric family injection hook of the Prometheus registry.
//
// Summaries and histograms are rather special beasts. You would probably not
// use them in the simple text format anyway. This method can deal with
// summaries and histograms if they are presented in exactly the way the
// text.Create function creates them.
//
// This method must not be called concurrently. If you want to parse different
// input concurrently, instantiate a separate Parser for each goroutine.
func (p *TextParser) TextToMetricFamilies(in io.Reader) (map[string]*dto.MetricFamily, error) {
p.reset(in)
for nextState := p.startOfLine; nextState != nil; nextState = nextState() {
// Magic happens here...
}
// Get rid of empty metric families.
for k, mf := range p.metricFamiliesByName {
if len(mf.GetMetric()) == 0 {
delete(p.metricFamiliesByName, k)
}
}
// If p.err is io.EOF now, we have run into a premature end of the input
// stream. Turn this error into something nicer and more
// meaningful. (io.EOF is often used as a signal for the legitimate end
// of an input stream.)
if p.err == io.EOF {
p.parseError("unexpected end of input stream")
}
return p.metricFamiliesByName, p.err
}
func (p *TextParser) reset(in io.Reader) {
p.metricFamiliesByName = map[string]*dto.MetricFamily{}
if p.buf == nil {
p.buf = bufio.NewReader(in)
} else {
p.buf.Reset(in)
}
p.err = nil
p.lineCount = 0
if p.summaries == nil || len(p.summaries) > 0 {
p.summaries = map[uint64]*dto.Metric{}
}
if p.histograms == nil || len(p.histograms) > 0 {
p.histograms = map[uint64]*dto.Metric{}
}
p.currentQuantile = math.NaN()
p.currentBucket = math.NaN()
}
// startOfLine represents the state where the next byte read from p.buf is the
// start of a line (or whitespace leading up to it).
func (p *TextParser) startOfLine() stateFn {
p.lineCount++
if p.skipBlankTab(); p.err != nil {
// End of input reached. This is the only case where
// that is not an error but a signal that we are done.
p.err = nil
return nil
}
switch p.currentByte {
case '#':
return p.startComment
case '\n':
return p.startOfLine // Empty line, start the next one.
}
return p.readingMetricName
}
// startComment represents the state where the next byte read from p.buf is the
// start of a comment (or whitespace leading up to it).
func (p *TextParser) startComment() stateFn {
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentByte == '\n' {
return p.startOfLine
}
if p.readTokenUntilWhitespace(); p.err != nil {
return nil // Unexpected end of input.
}
// If we have hit the end of line already, there is nothing left
// to do. This is not considered a syntax error.
if p.currentByte == '\n' {
return p.startOfLine
}
keyword := p.currentToken.String()
if keyword != "HELP" && keyword != "TYPE" {
// Generic comment, ignore by fast forwarding to end of line.
for p.currentByte != '\n' {
if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil {
return nil // Unexpected end of input.
}
}
return p.startOfLine
}
// There is something. Next has to be a metric name.
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
if p.readTokenAsMetricName(); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentByte == '\n' {
// At the end of the line already.
// Again, this is not considered a syntax error.
return p.startOfLine
}
if !isBlankOrTab(p.currentByte) {
p.parseError("invalid metric name in comment")
return nil
}
p.setOrCreateCurrentMF()
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentByte == '\n' {
// At the end of the line already.
// Again, this is not considered a syntax error.
return p.startOfLine
}
switch keyword {
case "HELP":
return p.readingHelp
case "TYPE":
return p.readingType
}
panic(fmt.Sprintf("code error: unexpected keyword %q", keyword))
}
// readingMetricName represents the state where the last byte read (now in
// p.currentByte) is the first byte of a metric name.
func (p *TextParser) readingMetricName() stateFn {
if p.readTokenAsMetricName(); p.err != nil {
return nil
}
if p.currentToken.Len() == 0 {
p.parseError("invalid metric name")
return nil
}
p.setOrCreateCurrentMF()
// Now is the time to fix the type if it hasn't happened yet.
if p.currentMF.Type == nil {
p.currentMF.Type = dto.MetricType_UNTYPED.Enum()
}
p.currentMetric = &dto.Metric{}
// Do not append the newly created currentMetric to
// currentMF.Metric right now. First wait if this is a summary,
// and the metric exists already, which we can only know after
// having read all the labels.
if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
return p.readingLabels
}
// readingLabels represents the state where the last byte read (now in
// p.currentByte) is either the first byte of the label set (i.e. a '{'), or the
// first byte of the value (otherwise).
func (p *TextParser) readingLabels() stateFn {
// Summaries/histograms are special. We have to reset the
// currentLabels map, currentQuantile and currentBucket before starting to
// read labels.
if p.currentMF.GetType() == dto.MetricType_SUMMARY || p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
p.currentLabels = map[string]string{}
p.currentLabels[string(model.MetricNameLabel)] = p.currentMF.GetName()
p.currentQuantile = math.NaN()
p.currentBucket = math.NaN()
}
if p.currentByte != '{' {
return p.readingValue
}
return p.startLabelName
}
// startLabelName represents the state where the next byte read from p.buf is
// the start of a label name (or whitespace leading up to it).
func (p *TextParser) startLabelName() stateFn {
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentByte == '}' {
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
return p.readingValue
}
if p.readTokenAsLabelName(); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentToken.Len() == 0 {
p.parseError(fmt.Sprintf("invalid label name for metric %q", p.currentMF.GetName()))
return nil
}
p.currentLabelPair = &dto.LabelPair{Name: proto.String(p.currentToken.String())}
if p.currentLabelPair.GetName() == string(model.MetricNameLabel) {
p.parseError(fmt.Sprintf("label name %q is reserved", model.MetricNameLabel))
return nil
}
// Special summary/histogram treatment. Don't add 'quantile' and 'le'
// labels to 'real' labels.
if !(p.currentMF.GetType() == dto.MetricType_SUMMARY && p.currentLabelPair.GetName() == model.QuantileLabel) &&
!(p.currentMF.GetType() == dto.MetricType_HISTOGRAM && p.currentLabelPair.GetName() == model.BucketLabel) {
p.currentMetric.Label = append(p.currentMetric.Label, p.currentLabelPair)
}
if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentByte != '=' {
p.parseError(fmt.Sprintf("expected '=' after label name, found %q", p.currentByte))
return nil
}
return p.startLabelValue
}
// startLabelValue represents the state where the next byte read from p.buf is
// the start of a (quoted) label value (or whitespace leading up to it).
func (p *TextParser) startLabelValue() stateFn {
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentByte != '"' {
p.parseError(fmt.Sprintf("expected '\"' at start of label value, found %q", p.currentByte))
return nil
}
if p.readTokenAsLabelValue(); p.err != nil {
return nil
}
if !model.LabelValue(p.currentToken.String()).IsValid() {
p.parseError(fmt.Sprintf("invalid label value %q", p.currentToken.String()))
return nil
}
p.currentLabelPair.Value = proto.String(p.currentToken.String())
// Special treatment of summaries:
// - Quantile labels are special, will result in dto.Quantile later.
// - Other labels have to be added to currentLabels for signature calculation.
if p.currentMF.GetType() == dto.MetricType_SUMMARY {
if p.currentLabelPair.GetName() == model.QuantileLabel {
if p.currentQuantile, p.err = strconv.ParseFloat(p.currentLabelPair.GetValue(), 64); p.err != nil {
// Create a more helpful error message.
p.parseError(fmt.Sprintf("expected float as value for 'quantile' label, got %q", p.currentLabelPair.GetValue()))
return nil
}
} else {
p.currentLabels[p.currentLabelPair.GetName()] = p.currentLabelPair.GetValue()
}
}
// Similar special treatment of histograms.
if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
if p.currentLabelPair.GetName() == model.BucketLabel {
if p.currentBucket, p.err = strconv.ParseFloat(p.currentLabelPair.GetValue(), 64); p.err != nil {
// Create a more helpful error message.
p.parseError(fmt.Sprintf("expected float as value for 'le' label, got %q", p.currentLabelPair.GetValue()))
return nil
}
} else {
p.currentLabels[p.currentLabelPair.GetName()] = p.currentLabelPair.GetValue()
}
}
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
switch p.currentByte {
case ',':
return p.startLabelName
case '}':
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
return p.readingValue
default:
p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.Value))
return nil
}
}
// readingValue represents the state where the last byte read (now in
// p.currentByte) is the first byte of the sample value (i.e. a float).
func (p *TextParser) readingValue() stateFn {
// When we are here, we have read all the labels, so for the
// special case of a summary/histogram, we can finally find out
// if the metric already exists.
if p.currentMF.GetType() == dto.MetricType_SUMMARY {
signature := model.LabelsToSignature(p.currentLabels)
if summary := p.summaries[signature]; summary != nil {
p.currentMetric = summary
} else {
p.summaries[signature] = p.currentMetric
p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
}
} else if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
signature := model.LabelsToSignature(p.currentLabels)
if histogram := p.histograms[signature]; histogram != nil {
p.currentMetric = histogram
} else {
p.histograms[signature] = p.currentMetric
p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
}
} else {
p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
}
if p.readTokenUntilWhitespace(); p.err != nil {
return nil // Unexpected end of input.
}
value, err := strconv.ParseFloat(p.currentToken.String(), 64)
if err != nil {
// Create a more helpful error message.
p.parseError(fmt.Sprintf("expected float as value, got %q", p.currentToken.String()))
return nil
}
switch p.currentMF.GetType() {
case dto.MetricType_COUNTER:
p.currentMetric.Counter = &dto.Counter{Value: proto.Float64(value)}
case dto.MetricType_GAUGE:
p.currentMetric.Gauge = &dto.Gauge{Value: proto.Float64(value)}
case dto.MetricType_UNTYPED:
p.currentMetric.Untyped = &dto.Untyped{Value: proto.Float64(value)}
case dto.MetricType_SUMMARY:
// *sigh*
if p.currentMetric.Summary == nil {
p.currentMetric.Summary = &dto.Summary{}
}
switch {
case p.currentIsSummaryCount:
p.currentMetric.Summary.SampleCount = proto.Uint64(uint64(value))
case p.currentIsSummarySum:
p.currentMetric.Summary.SampleSum = proto.Float64(value)
case !math.IsNaN(p.currentQuantile):
p.currentMetric.Summary.Quantile = append(
p.currentMetric.Summary.Quantile,
&dto.Quantile{
Quantile: proto.Float64(p.currentQuantile),
Value: proto.Float64(value),
},
)
}
case dto.MetricType_HISTOGRAM:
// *sigh*
if p.currentMetric.Histogram == nil {
p.currentMetric.Histogram = &dto.Histogram{}
}
switch {
case p.currentIsHistogramCount:
p.currentMetric.Histogram.SampleCount = proto.Uint64(uint64(value))
case p.currentIsHistogramSum:
p.currentMetric.Histogram.SampleSum = proto.Float64(value)
case !math.IsNaN(p.currentBucket):
p.currentMetric.Histogram.Bucket = append(
p.currentMetric.Histogram.Bucket,
&dto.Bucket{
UpperBound: proto.Float64(p.currentBucket),
CumulativeCount: proto.Uint64(uint64(value)),
},
)
}
default:
p.err = fmt.Errorf("unexpected type for metric name %q", p.currentMF.GetName())
}
if p.currentByte == '\n' {
return p.startOfLine
}
return p.startTimestamp
}
// startTimestamp represents the state where the next byte read from p.buf is
// the start of the timestamp (or whitespace leading up to it).
func (p *TextParser) startTimestamp() stateFn {
if p.skipBlankTab(); p.err != nil {
return nil // Unexpected end of input.
}
if p.readTokenUntilWhitespace(); p.err != nil {
return nil // Unexpected end of input.
}
timestamp, err := strconv.ParseInt(p.currentToken.String(), 10, 64)
if err != nil {
// Create a more helpful error message.
p.parseError(fmt.Sprintf("expected integer as timestamp, got %q", p.currentToken.String()))
return nil
}
p.currentMetric.TimestampMs = proto.Int64(timestamp)
if p.readTokenUntilNewline(false); p.err != nil {
return nil // Unexpected end of input.
}
if p.currentToken.Len() > 0 {
p.parseError(fmt.Sprintf("spurious string after timestamp: %q", p.currentToken.String()))
return nil
}
return p.startOfLine
}
// readingHelp represents the state where the last byte read (now in
// p.currentByte) is the first byte of the docstring after 'HELP'.
func (p *TextParser) readingHelp() stateFn {
if p.currentMF.Help != nil {
p.parseError(fmt.Sprintf("second HELP line for metric name %q", p.currentMF.GetName()))
return nil
}
// Rest of line is the docstring.
if p.readTokenUntilNewline(true); p.err != nil {
return nil // Unexpected end of input.
}
p.currentMF.Help = proto.String(p.currentToken.String())
return p.startOfLine
}
// readingType represents the state where the last byte read (now in
// p.currentByte) is the first byte of the type hint after 'HELP'.
func (p *TextParser) readingType() stateFn {
if p.currentMF.Type != nil {
p.parseError(fmt.Sprintf("second TYPE line for metric name %q, or TYPE reported after samples", p.currentMF.GetName()))
return nil
}
// Rest of line is the type.
if p.readTokenUntilNewline(false); p.err != nil {
return nil // Unexpected end of input.
}
metricType, ok := dto.MetricType_value[strings.ToUpper(p.currentToken.String())]
if !ok {
p.parseError(fmt.Sprintf("unknown metric type %q", p.currentToken.String()))
return nil
}
p.currentMF.Type = dto.MetricType(metricType).Enum()
return p.startOfLine
}
// parseError sets p.err to a ParseError at the current line with the given
// message.
func (p *TextParser) parseError(msg string) {
p.err = ParseError{
Line: p.lineCount,
Msg: msg,
}
}
// skipBlankTab reads (and discards) bytes from p.buf until it encounters a byte
// that is neither ' ' nor '\t'. That byte is left in p.currentByte.
func (p *TextParser) skipBlankTab() {
for {
if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil || !isBlankOrTab(p.currentByte) {
return
}
}
}
// skipBlankTabIfCurrentBlankTab works exactly as skipBlankTab but doesn't do
// anything if p.currentByte is neither ' ' nor '\t'.
func (p *TextParser) skipBlankTabIfCurrentBlankTab() {
if isBlankOrTab(p.currentByte) {
p.skipBlankTab()
}
}
// readTokenUntilWhitespace copies bytes from p.buf into p.currentToken. The
// first byte considered is the byte already read (now in p.currentByte). The
// first whitespace byte encountered is still copied into p.currentByte, but not
// into p.currentToken.
func (p *TextParser) readTokenUntilWhitespace() {
p.currentToken.Reset()
for p.err == nil && !isBlankOrTab(p.currentByte) && p.currentByte != '\n' {
p.currentToken.WriteByte(p.currentByte)
p.currentByte, p.err = p.buf.ReadByte()
}
}
// readTokenUntilNewline copies bytes from p.buf into p.currentToken. The first
// byte considered is the byte already read (now in p.currentByte). The first
// newline byte encountered is still copied into p.currentByte, but not into
// p.currentToken. If recognizeEscapeSequence is true, two escape sequences are
// recognized: '\\' tranlates into '\', and '\n' into a line-feed character. All
// other escape sequences are invalid and cause an error.
func (p *TextParser) readTokenUntilNewline(recognizeEscapeSequence bool) {
p.currentToken.Reset()
escaped := false
for p.err == nil {
if recognizeEscapeSequence && escaped {
switch p.currentByte {
case '\\':
p.currentToken.WriteByte(p.currentByte)
case 'n':
p.currentToken.WriteByte('\n')
default:
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
return
}
escaped = false
} else {
switch p.currentByte {
case '\n':
return
case '\\':
escaped = true
default:
p.currentToken.WriteByte(p.currentByte)
}
}
p.currentByte, p.err = p.buf.ReadByte()
}
}
// readTokenAsMetricName copies a metric name from p.buf into p.currentToken.
// The first byte considered is the byte already read (now in p.currentByte).
// The first byte not part of a metric name is still copied into p.currentByte,
// but not into p.currentToken.
func (p *TextParser) readTokenAsMetricName() {
p.currentToken.Reset()
if !isValidMetricNameStart(p.currentByte) {
return
}
for {
p.currentToken.WriteByte(p.currentByte)
p.currentByte, p.err = p.buf.ReadByte()
if p.err != nil || !isValidMetricNameContinuation(p.currentByte) {
return
}
}
}
// readTokenAsLabelName copies a label name from p.buf into p.currentToken.
// The first byte considered is the byte already read (now in p.currentByte).
// The first byte not part of a label name is still copied into p.currentByte,
// but not into p.currentToken.
func (p *TextParser) readTokenAsLabelName() {
p.currentToken.Reset()
if !isValidLabelNameStart(p.currentByte) {
return
}
for {
p.currentToken.WriteByte(p.currentByte)
p.currentByte, p.err = p.buf.ReadByte()
if p.err != nil || !isValidLabelNameContinuation(p.currentByte) {
return
}
}
}
// readTokenAsLabelValue copies a label value from p.buf into p.currentToken.
// In contrast to the other 'readTokenAs...' functions, which start with the
// last read byte in p.currentByte, this method ignores p.currentByte and starts
// with reading a new byte from p.buf. The first byte not part of a label value
// is still copied into p.currentByte, but not into p.currentToken.
func (p *TextParser) readTokenAsLabelValue() {
p.currentToken.Reset()
escaped := false
for {
if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil {
return
}
if escaped {
switch p.currentByte {
case '"', '\\':
p.currentToken.WriteByte(p.currentByte)
case 'n':
p.currentToken.WriteByte('\n')
default:
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
return
}
escaped = false
continue
}
switch p.currentByte {
case '"':
return
case '\n':
p.parseError(fmt.Sprintf("label value %q contains unescaped new-line", p.currentToken.String()))
return
case '\\':
escaped = true
default:
p.currentToken.WriteByte(p.currentByte)
}
}
}
func (p *TextParser) setOrCreateCurrentMF() {
p.currentIsSummaryCount = false
p.currentIsSummarySum = false
p.currentIsHistogramCount = false
p.currentIsHistogramSum = false
name := p.currentToken.String()
if p.currentMF = p.metricFamiliesByName[name]; p.currentMF != nil {
return
}
// Try out if this is a _sum or _count for a summary/histogram.
summaryName := summaryMetricName(name)
if p.currentMF = p.metricFamiliesByName[summaryName]; p.currentMF != nil {
if p.currentMF.GetType() == dto.MetricType_SUMMARY {
if isCount(name) {
p.currentIsSummaryCount = true
}
if isSum(name) {
p.currentIsSummarySum = true
}
return
}
}
histogramName := histogramMetricName(name)
if p.currentMF = p.metricFamiliesByName[histogramName]; p.currentMF != nil {
if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
if isCount(name) {
p.currentIsHistogramCount = true
}
if isSum(name) {
p.currentIsHistogramSum = true
}
return
}
}
p.currentMF = &dto.MetricFamily{Name: proto.String(name)}
p.metricFamiliesByName[name] = p.currentMF
}
func isValidLabelNameStart(b byte) bool {
return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_'
}
func isValidLabelNameContinuation(b byte) bool {
return isValidLabelNameStart(b) || (b >= '0' && b <= '9')
}
func isValidMetricNameStart(b byte) bool {
return isValidLabelNameStart(b) || b == ':'
}
func isValidMetricNameContinuation(b byte) bool {
return isValidLabelNameContinuation(b) || b == ':'
}
func isBlankOrTab(b byte) bool {
return b == ' ' || b == '\t'
}
func isCount(name string) bool {
return len(name) > 6 && name[len(name)-6:] == "_count"
}
func isSum(name string) bool {
return len(name) > 4 && name[len(name)-4:] == "_sum"
}
func isBucket(name string) bool {
return len(name) > 7 && name[len(name)-7:] == "_bucket"
}
func summaryMetricName(name string) string {
switch {
case isCount(name):
return name[:len(name)-6]
case isSum(name):
return name[:len(name)-4]
default:
return name
}
}
func histogramMetricName(name string) string {
switch {
case isCount(name):
return name[:len(name)-6]
case isSum(name):
return name[:len(name)-4]
case isBucket(name):
return name[:len(name)-7]
default:
return name
}
}

593
vendor/github.com/prometheus/common/expfmt/text_parse_test.go generated vendored Normal file
View file

@ -0,0 +1,593 @@
// Copyright 2014 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 expfmt
import (
"math"
"strings"
"testing"
"github.com/golang/protobuf/proto"
dto "github.com/prometheus/client_model/go"
)
func testTextParse(t testing.TB) {
var scenarios = []struct {
in string
out []*dto.MetricFamily
}{
// 0: Empty lines as input.
{
in: `
`,
out: []*dto.MetricFamily{},
},
// 1: Minimal case.
{
in: `
minimal_metric 1.234
another_metric -3e3 103948
# Even that:
no_labels{} 3
# HELP line for non-existing metric will be ignored.
`,
out: []*dto.MetricFamily{
&dto.MetricFamily{
Name: proto.String("minimal_metric"),
Type: dto.MetricType_UNTYPED.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Untyped: &dto.Untyped{
Value: proto.Float64(1.234),
},
},
},
},
&dto.MetricFamily{
Name: proto.String("another_metric"),
Type: dto.MetricType_UNTYPED.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Untyped: &dto.Untyped{
Value: proto.Float64(-3e3),
},
TimestampMs: proto.Int64(103948),
},
},
},
&dto.MetricFamily{
Name: proto.String("no_labels"),
Type: dto.MetricType_UNTYPED.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Untyped: &dto.Untyped{
Value: proto.Float64(3),
},
},
},
},
},
},
// 2: Counters & gauges, docstrings, various whitespace, escape sequences.
{
in: `
# A normal comment.
#
# TYPE name counter
name{labelname="val1",basename="basevalue"} NaN
name {labelname="val2",basename="base\"v\\al\nue"} 0.23 1234567890
# HELP name two-line\n doc str\\ing
# HELP name2 doc str"ing 2
# TYPE name2 gauge
name2{labelname="val2" ,basename = "basevalue2" } +Inf 54321
name2{ labelname = "val1" , }-Inf
`,
out: []*dto.MetricFamily{
&dto.MetricFamily{
Name: proto.String("name"),
Help: proto.String("two-line\n doc str\\ing"),
Type: dto.MetricType_COUNTER.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("labelname"),
Value: proto.String("val1"),
},
&dto.LabelPair{
Name: proto.String("basename"),
Value: proto.String("basevalue"),
},
},
Counter: &dto.Counter{
Value: proto.Float64(math.NaN()),
},
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("labelname"),
Value: proto.String("val2"),
},
&dto.LabelPair{
Name: proto.String("basename"),
Value: proto.String("base\"v\\al\nue"),
},
},
Counter: &dto.Counter{
Value: proto.Float64(.23),
},
TimestampMs: proto.Int64(1234567890),
},
},
},
&dto.MetricFamily{
Name: proto.String("name2"),
Help: proto.String("doc str\"ing 2"),
Type: dto.MetricType_GAUGE.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("labelname"),
Value: proto.String("val2"),
},
&dto.LabelPair{
Name: proto.String("basename"),
Value: proto.String("basevalue2"),
},
},
Gauge: &dto.Gauge{
Value: proto.Float64(math.Inf(+1)),
},
TimestampMs: proto.Int64(54321),
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("labelname"),
Value: proto.String("val1"),
},
},
Gauge: &dto.Gauge{
Value: proto.Float64(math.Inf(-1)),
},
},
},
},
},
},
// 3: The evil summary, mixed with other types and funny comments.
{
in: `
# TYPE my_summary summary
my_summary{n1="val1",quantile="0.5"} 110
decoy -1 -2
my_summary{n1="val1",quantile="0.9"} 140 1
my_summary_count{n1="val1"} 42
# Latest timestamp wins in case of a summary.
my_summary_sum{n1="val1"} 4711 2
fake_sum{n1="val1"} 2001
# TYPE another_summary summary
another_summary_count{n2="val2",n1="val1"} 20
my_summary_count{n2="val2",n1="val1"} 5 5
another_summary{n1="val1",n2="val2",quantile=".3"} -1.2
my_summary_sum{n1="val2"} 08 15
my_summary{n1="val3", quantile="0.2"} 4711
my_summary{n1="val1",n2="val2",quantile="-12.34",} NaN
# some
# funny comments
# HELP
# HELP
# HELP my_summary
# HELP my_summary
`,
out: []*dto.MetricFamily{
&dto.MetricFamily{
Name: proto.String("fake_sum"),
Type: dto.MetricType_UNTYPED.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("n1"),
Value: proto.String("val1"),
},
},
Untyped: &dto.Untyped{
Value: proto.Float64(2001),
},
},
},
},
&dto.MetricFamily{
Name: proto.String("decoy"),
Type: dto.MetricType_UNTYPED.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Untyped: &dto.Untyped{
Value: proto.Float64(-1),
},
TimestampMs: proto.Int64(-2),
},
},
},
&dto.MetricFamily{
Name: proto.String("my_summary"),
Type: dto.MetricType_SUMMARY.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("n1"),
Value: proto.String("val1"),
},
},
Summary: &dto.Summary{
SampleCount: proto.Uint64(42),
SampleSum: proto.Float64(4711),
Quantile: []*dto.Quantile{
&dto.Quantile{
Quantile: proto.Float64(0.5),
Value: proto.Float64(110),
},
&dto.Quantile{
Quantile: proto.Float64(0.9),
Value: proto.Float64(140),
},
},
},
TimestampMs: proto.Int64(2),
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("n2"),
Value: proto.String("val2"),
},
&dto.LabelPair{
Name: proto.String("n1"),
Value: proto.String("val1"),
},
},
Summary: &dto.Summary{
SampleCount: proto.Uint64(5),
Quantile: []*dto.Quantile{
&dto.Quantile{
Quantile: proto.Float64(-12.34),
Value: proto.Float64(math.NaN()),
},
},
},
TimestampMs: proto.Int64(5),
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("n1"),
Value: proto.String("val2"),
},
},
Summary: &dto.Summary{
SampleSum: proto.Float64(8),
},
TimestampMs: proto.Int64(15),
},
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("n1"),
Value: proto.String("val3"),
},
},
Summary: &dto.Summary{
Quantile: []*dto.Quantile{
&dto.Quantile{
Quantile: proto.Float64(0.2),
Value: proto.Float64(4711),
},
},
},
},
},
},
&dto.MetricFamily{
Name: proto.String("another_summary"),
Type: dto.MetricType_SUMMARY.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Label: []*dto.LabelPair{
&dto.LabelPair{
Name: proto.String("n2"),
Value: proto.String("val2"),
},
&dto.LabelPair{
Name: proto.String("n1"),
Value: proto.String("val1"),
},
},
Summary: &dto.Summary{
SampleCount: proto.Uint64(20),
Quantile: []*dto.Quantile{
&dto.Quantile{
Quantile: proto.Float64(0.3),
Value: proto.Float64(-1.2),
},
},
},
},
},
},
},
},
// 4: The histogram.
{
in: `
# HELP request_duration_microseconds The response latency.
# TYPE request_duration_microseconds histogram
request_duration_microseconds_bucket{le="100"} 123
request_duration_microseconds_bucket{le="120"} 412
request_duration_microseconds_bucket{le="144"} 592
request_duration_microseconds_bucket{le="172.8"} 1524
request_duration_microseconds_bucket{le="+Inf"} 2693
request_duration_microseconds_sum 1.7560473e+06
request_duration_microseconds_count 2693
`,
out: []*dto.MetricFamily{
{
Name: proto.String("request_duration_microseconds"),
Help: proto.String("The response latency."),
Type: dto.MetricType_HISTOGRAM.Enum(),
Metric: []*dto.Metric{
&dto.Metric{
Histogram: &dto.Histogram{
SampleCount: proto.Uint64(2693),
SampleSum: proto.Float64(1756047.3),
Bucket: []*dto.Bucket{
&dto.Bucket{
UpperBound: proto.Float64(100),
CumulativeCount: proto.Uint64(123),
},
&dto.Bucket{
UpperBound: proto.Float64(120),
CumulativeCount: proto.Uint64(412),
},
&dto.Bucket{
UpperBound: proto.Float64(144),
CumulativeCount: proto.Uint64(592),
},
&dto.Bucket{
UpperBound: proto.Float64(172.8),
CumulativeCount: proto.Uint64(1524),
},
&dto.Bucket{
UpperBound: proto.Float64(math.Inf(+1)),
CumulativeCount: proto.Uint64(2693),
},
},
},
},
},
},
},
},
}
for i, scenario := range scenarios {
out, err := parser.TextToMetricFamilies(strings.NewReader(scenario.in))
if err != nil {
t.Errorf("%d. error: %s", i, err)
continue
}
if expected, got := len(scenario.out), len(out); expected != got {
t.Errorf(
"%d. expected %d MetricFamilies, got %d",
i, expected, got,
)
}
for _, expected := range scenario.out {
got, ok := out[expected.GetName()]
if !ok {
t.Errorf(
"%d. expected MetricFamily %q, found none",
i, expected.GetName(),
)
continue
}
if expected.String() != got.String() {
t.Errorf(
"%d. expected MetricFamily %s, got %s",
i, expected, got,
)
}
}
}
}
func TestTextParse(t *testing.T) {
testTextParse(t)
}
func BenchmarkTextParse(b *testing.B) {
for i := 0; i < b.N; i++ {
testTextParse(b)
}
}
func testTextParseError(t testing.TB) {
var scenarios = []struct {
in string
err string
}{
// 0: No new-line at end of input.
{
in: `
bla 3.14
blubber 42`,
err: "text format parsing error in line 3: unexpected end of input stream",
},
// 1: Invalid escape sequence in label value.
{
in: `metric{label="\t"} 3.14`,
err: "text format parsing error in line 1: invalid escape sequence",
},
// 2: Newline in label value.
{
in: `
metric{label="new
line"} 3.14
`,
err: `text format parsing error in line 2: label value "new" contains unescaped new-line`,
},
// 3:
{
in: `metric{@="bla"} 3.14`,
err: "text format parsing error in line 1: invalid label name for metric",
},
// 4:
{
in: `metric{__name__="bla"} 3.14`,
err: `text format parsing error in line 1: label name "__name__" is reserved`,
},
// 5:
{
in: `metric{label+="bla"} 3.14`,
err: "text format parsing error in line 1: expected '=' after label name",
},
// 6:
{
in: `metric{label=bla} 3.14`,
err: "text format parsing error in line 1: expected '\"' at start of label value",
},
// 7:
{
in: `
# TYPE metric summary
metric{quantile="bla"} 3.14
`,
err: "text format parsing error in line 3: expected float as value for 'quantile' label",
},
// 8:
{
in: `metric{label="bla"+} 3.14`,
err: "text format parsing error in line 1: unexpected end of label value",
},
// 9:
{
in: `metric{label="bla"} 3.14 2.72
`,
err: "text format parsing error in line 1: expected integer as timestamp",
},
// 10:
{
in: `metric{label="bla"} 3.14 2 3
`,
err: "text format parsing error in line 1: spurious string after timestamp",
},
// 11:
{
in: `metric{label="bla"} blubb
`,
err: "text format parsing error in line 1: expected float as value",
},
// 12:
{
in: `
# HELP metric one
# HELP metric two
`,
err: "text format parsing error in line 3: second HELP line for metric name",
},
// 13:
{
in: `
# TYPE metric counter
# TYPE metric untyped
`,
err: `text format parsing error in line 3: second TYPE line for metric name "metric", or TYPE reported after samples`,
},
// 14:
{
in: `
metric 4.12
# TYPE metric counter
`,
err: `text format parsing error in line 3: second TYPE line for metric name "metric", or TYPE reported after samples`,
},
// 14:
{
in: `
# TYPE metric bla
`,
err: "text format parsing error in line 2: unknown metric type",
},
// 15:
{
in: `
# TYPE met-ric
`,
err: "text format parsing error in line 2: invalid metric name in comment",
},
// 16:
{
in: `@invalidmetric{label="bla"} 3.14 2`,
err: "text format parsing error in line 1: invalid metric name",
},
// 17:
{
in: `{label="bla"} 3.14 2`,
err: "text format parsing error in line 1: invalid metric name",
},
// 18:
{
in: `
# TYPE metric histogram
metric_bucket{le="bla"} 3.14
`,
err: "text format parsing error in line 3: expected float as value for 'le' label",
},
// 19: Invalid UTF-8 in label value.
{
in: "metric{l=\"\xbd\"} 3.14\n",
err: "text format parsing error in line 1: invalid label value \"\\xbd\"",
},
}
for i, scenario := range scenarios {
_, err := parser.TextToMetricFamilies(strings.NewReader(scenario.in))
if err == nil {
t.Errorf("%d. expected error, got nil", i)
continue
}
if expected, got := scenario.err, err.Error(); strings.Index(got, expected) != 0 {
t.Errorf(
"%d. expected error starting with %q, got %q",
i, expected, got,
)
}
}
}
func TestTextParseError(t *testing.T) {
testTextParseError(t)
}
func BenchmarkParseError(b *testing.B) {
for i := 0; i < b.N; i++ {
testTextParseError(b)
}
}