mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-27 02:46:47 +01:00
442 lines
12 KiB
Go
442 lines
12 KiB
Go
package promscrape
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
|
|
parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/prometheus"
|
|
)
|
|
|
|
func TestPromLabelsString(t *testing.T) {
|
|
f := func(labels []prompbmarshal.Label, resultExpected string) {
|
|
t.Helper()
|
|
result := promLabelsString(labels)
|
|
if result != resultExpected {
|
|
t.Fatalf("unexpected result; got\n%s\nwant\n%s", result, resultExpected)
|
|
}
|
|
}
|
|
f([]prompbmarshal.Label{}, "{}")
|
|
f([]prompbmarshal.Label{
|
|
{
|
|
Name: "foo",
|
|
Value: "bar",
|
|
},
|
|
}, `{foo="bar"}`)
|
|
f([]prompbmarshal.Label{
|
|
{
|
|
Name: "foo",
|
|
Value: "bar",
|
|
},
|
|
{
|
|
Name: "a",
|
|
Value: `"b"`,
|
|
},
|
|
}, `{foo="bar",a="\"b\""}`)
|
|
}
|
|
|
|
func TestScrapeWorkScrapeInternalFailure(t *testing.T) {
|
|
dataExpected := `
|
|
up 0 123
|
|
scrape_samples_scraped 0 123
|
|
scrape_duration_seconds 0 123
|
|
scrape_samples_post_metric_relabeling 0 123
|
|
scrape_series_added 0 123
|
|
`
|
|
timeseriesExpected := parseData(dataExpected)
|
|
|
|
var sw scrapeWork
|
|
|
|
readDataCalls := 0
|
|
sw.ReadData = func(dst []byte) ([]byte, error) {
|
|
readDataCalls++
|
|
return dst, fmt.Errorf("error when reading data")
|
|
}
|
|
|
|
pushDataCalls := 0
|
|
var pushDataErr error
|
|
sw.PushData = func(wr *prompbmarshal.WriteRequest) {
|
|
if err := expectEqualTimeseries(wr.Timeseries, timeseriesExpected); err != nil {
|
|
pushDataErr = fmt.Errorf("unexpected data pushed: %w\ngot\n%#v\nwant\n%#v", err, wr.Timeseries, timeseriesExpected)
|
|
}
|
|
pushDataCalls++
|
|
}
|
|
|
|
timestamp := int64(123000)
|
|
if err := sw.scrapeInternal(timestamp, timestamp); err == nil {
|
|
t.Fatalf("expecting non-nil error")
|
|
}
|
|
if pushDataErr != nil {
|
|
t.Fatalf("unexpected error: %s", pushDataErr)
|
|
}
|
|
if readDataCalls != 1 {
|
|
t.Fatalf("unexpected number of readData calls; got %d; want %d", readDataCalls, 1)
|
|
}
|
|
if pushDataCalls != 1 {
|
|
t.Fatalf("unexpected number of pushData calls; got %d; want %d", pushDataCalls, 1)
|
|
}
|
|
}
|
|
|
|
func TestScrapeWorkScrapeInternalSuccess(t *testing.T) {
|
|
f := func(data string, cfg *ScrapeWork, dataExpected string) {
|
|
t.Helper()
|
|
|
|
timeseriesExpected := parseData(dataExpected)
|
|
|
|
var sw scrapeWork
|
|
sw.Config = *cfg
|
|
|
|
readDataCalls := 0
|
|
sw.ReadData = func(dst []byte) ([]byte, error) {
|
|
readDataCalls++
|
|
dst = append(dst, data...)
|
|
return dst, nil
|
|
}
|
|
|
|
pushDataCalls := 0
|
|
var pushDataErr error
|
|
sw.PushData = func(wr *prompbmarshal.WriteRequest) {
|
|
pushDataCalls++
|
|
if len(wr.Timeseries) > len(timeseriesExpected) {
|
|
pushDataErr = fmt.Errorf("too many time series obtained; got %d; want %d", len(wr.Timeseries), len(timeseriesExpected))
|
|
return
|
|
}
|
|
tsExpected := timeseriesExpected[:len(wr.Timeseries)]
|
|
timeseriesExpected = timeseriesExpected[len(tsExpected):]
|
|
if err := expectEqualTimeseries(wr.Timeseries, tsExpected); err != nil {
|
|
pushDataErr = fmt.Errorf("unexpected data pushed: %w\ngot\n%v\nwant\n%v", err, wr.Timeseries, tsExpected)
|
|
return
|
|
}
|
|
}
|
|
|
|
timestamp := int64(123000)
|
|
if err := sw.scrapeInternal(timestamp, timestamp); err != nil {
|
|
t.Fatalf("unexpected error: %s", err)
|
|
}
|
|
if pushDataErr != nil {
|
|
t.Fatalf("unexpected error: %s", pushDataErr)
|
|
}
|
|
if readDataCalls != 1 {
|
|
t.Fatalf("unexpected number of readData calls; got %d; want %d", readDataCalls, 1)
|
|
}
|
|
if pushDataCalls == 0 {
|
|
t.Fatalf("missing pushData calls")
|
|
}
|
|
}
|
|
|
|
f(``, &ScrapeWork{}, `
|
|
up 1 123
|
|
scrape_samples_scraped 0 123
|
|
scrape_duration_seconds 0 123
|
|
scrape_samples_post_metric_relabeling 0 123
|
|
scrape_series_added 0 123
|
|
`)
|
|
f(`
|
|
foo{bar="baz",empty_label=""} 34.45 3
|
|
abc -2
|
|
`, &ScrapeWork{}, `
|
|
foo{bar="baz"} 34.45 123
|
|
abc -2 123
|
|
up 1 123
|
|
scrape_samples_scraped 2 123
|
|
scrape_duration_seconds 0 123
|
|
scrape_samples_post_metric_relabeling 2 123
|
|
scrape_series_added 2 123
|
|
`)
|
|
f(`
|
|
foo{bar="baz"} 34.45 3
|
|
abc -2
|
|
`, &ScrapeWork{
|
|
HonorTimestamps: true,
|
|
Labels: []prompbmarshal.Label{
|
|
{
|
|
Name: "foo",
|
|
Value: "x",
|
|
},
|
|
},
|
|
}, `
|
|
foo{bar="baz",foo="x"} 34.45 3
|
|
abc{foo="x"} -2 123
|
|
up{foo="x"} 1 123
|
|
scrape_samples_scraped{foo="x"} 2 123
|
|
scrape_duration_seconds{foo="x"} 0 123
|
|
scrape_samples_post_metric_relabeling{foo="x"} 2 123
|
|
scrape_series_added{foo="x"} 2 123
|
|
`)
|
|
f(`
|
|
foo{job="orig",bar="baz"} 34.45
|
|
bar{y="2",job="aa",a="b",job="bb",x="1"} -3e4 2345
|
|
`, &ScrapeWork{
|
|
HonorLabels: false,
|
|
Labels: []prompbmarshal.Label{
|
|
{
|
|
Name: "job",
|
|
Value: "override",
|
|
},
|
|
},
|
|
}, `
|
|
foo{exported_job="orig",job="override",bar="baz"} 34.45 123
|
|
bar{exported_job="aa",job="override",x="1",a="b",y="2"} -3e4 123
|
|
up{job="override"} 1 123
|
|
scrape_samples_scraped{job="override"} 2 123
|
|
scrape_duration_seconds{job="override"} 0 123
|
|
scrape_samples_post_metric_relabeling{job="override"} 2 123
|
|
scrape_series_added{job="override"} 2 123
|
|
`)
|
|
// Empty instance override. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/453
|
|
f(`
|
|
no_instance{instance="",job="some_job",label="val1",test=""} 5555
|
|
test_with_instance{instance="some_instance",job="some_job",label="val2",test=""} 1555
|
|
`, &ScrapeWork{
|
|
HonorLabels: true,
|
|
Labels: []prompbmarshal.Label{
|
|
{
|
|
Name: "instance",
|
|
Value: "foobar",
|
|
},
|
|
{
|
|
Name: "job",
|
|
Value: "xxx",
|
|
},
|
|
},
|
|
}, `
|
|
no_instance{job="some_job",label="val1"} 5555 123
|
|
test_with_instance{instance="some_instance",job="some_job",label="val2"} 1555 123
|
|
up{instance="foobar",job="xxx"} 1 123
|
|
scrape_samples_scraped{instance="foobar",job="xxx"} 2 123
|
|
scrape_duration_seconds{instance="foobar",job="xxx"} 0 123
|
|
scrape_samples_post_metric_relabeling{instance="foobar",job="xxx"} 2 123
|
|
scrape_series_added{instance="foobar",job="xxx"} 2 123
|
|
`)
|
|
f(`
|
|
no_instance{instance="",job="some_job",label="val1",test=""} 5555
|
|
test_with_instance{instance="some_instance",job="some_job",label="val2",test=""} 1555
|
|
`, &ScrapeWork{
|
|
HonorLabels: false,
|
|
Labels: []prompbmarshal.Label{
|
|
{
|
|
Name: "instance",
|
|
Value: "foobar",
|
|
},
|
|
{
|
|
Name: "job",
|
|
Value: "xxx",
|
|
},
|
|
},
|
|
}, `
|
|
no_instance{exported_job="some_job",instance="foobar",job="xxx",label="val1"} 5555 123
|
|
test_with_instance{exported_instance="some_instance",exported_job="some_job",instance="foobar",job="xxx",label="val2"} 1555 123
|
|
up{instance="foobar",job="xxx"} 1 123
|
|
scrape_samples_scraped{instance="foobar",job="xxx"} 2 123
|
|
scrape_duration_seconds{instance="foobar",job="xxx"} 0 123
|
|
scrape_samples_post_metric_relabeling{instance="foobar",job="xxx"} 2 123
|
|
scrape_series_added{instance="foobar",job="xxx"} 2 123
|
|
`)
|
|
f(`
|
|
foo{job="orig",bar="baz"} 34.45
|
|
bar{job="aa",a="b",job="bb"} -3e4 2345
|
|
`, &ScrapeWork{
|
|
HonorLabels: true,
|
|
Labels: []prompbmarshal.Label{
|
|
{
|
|
Name: "job",
|
|
Value: "override",
|
|
},
|
|
},
|
|
}, `
|
|
foo{job="orig",bar="baz"} 34.45 123
|
|
bar{job="aa",a="b"} -3e4 123
|
|
up{job="override"} 1 123
|
|
scrape_samples_scraped{job="override"} 2 123
|
|
scrape_duration_seconds{job="override"} 0 123
|
|
scrape_samples_post_metric_relabeling{job="override"} 2 123
|
|
scrape_series_added{job="override"} 2 123
|
|
`)
|
|
f(`
|
|
foo{bar="baz"} 34.44
|
|
bar{a="b",c="d"} -3e4
|
|
`, &ScrapeWork{
|
|
HonorLabels: true,
|
|
Labels: []prompbmarshal.Label{
|
|
{
|
|
Name: "job",
|
|
Value: "xx",
|
|
},
|
|
{
|
|
Name: "__address__",
|
|
Value: "foo.com",
|
|
},
|
|
},
|
|
MetricRelabelConfigs: []promrelabel.ParsedRelabelConfig{
|
|
{
|
|
SourceLabels: []string{"__address__", "job"},
|
|
Separator: "/",
|
|
TargetLabel: "instance",
|
|
Regex: defaultRegexForRelabelConfig,
|
|
Replacement: "$1",
|
|
Action: "replace",
|
|
},
|
|
{
|
|
Action: "labeldrop",
|
|
Regex: regexp.MustCompile("^c$"),
|
|
},
|
|
},
|
|
}, `
|
|
foo{bar="baz",job="xx",instance="foo.com/xx"} 34.44 123
|
|
bar{a="b",job="xx",instance="foo.com/xx"} -3e4 123
|
|
up{job="xx"} 1 123
|
|
scrape_samples_scraped{job="xx"} 2 123
|
|
scrape_duration_seconds{job="xx"} 0 123
|
|
scrape_samples_post_metric_relabeling{job="xx"} 2 123
|
|
scrape_series_added{job="xx"} 2 123
|
|
`)
|
|
f(`
|
|
foo{bar="baz"} 34.44
|
|
bar{a="b",c="d",} -3e4
|
|
dropme{foo="bar"} 334
|
|
dropme{xxx="yy",ss="dsf"} 843
|
|
`, &ScrapeWork{
|
|
HonorLabels: true,
|
|
Labels: []prompbmarshal.Label{
|
|
{
|
|
Name: "job",
|
|
Value: "xx",
|
|
},
|
|
{
|
|
Name: "instance",
|
|
Value: "foo.com",
|
|
},
|
|
},
|
|
MetricRelabelConfigs: []promrelabel.ParsedRelabelConfig{
|
|
{
|
|
Action: "drop",
|
|
SourceLabels: []string{"a", "c"},
|
|
Regex: regexp.MustCompile("^bd$"),
|
|
},
|
|
{
|
|
Action: "drop",
|
|
SourceLabels: []string{"__name__"},
|
|
Regex: regexp.MustCompile("^(dropme|up)$"),
|
|
},
|
|
},
|
|
}, `
|
|
foo{bar="baz",job="xx",instance="foo.com"} 34.44 123
|
|
up{job="xx",instance="foo.com"} 1 123
|
|
scrape_samples_scraped{job="xx",instance="foo.com"} 4 123
|
|
scrape_duration_seconds{job="xx",instance="foo.com"} 0 123
|
|
scrape_samples_post_metric_relabeling{job="xx",instance="foo.com"} 1 123
|
|
scrape_series_added{job="xx",instance="foo.com"} 1 123
|
|
`)
|
|
f(`
|
|
foo{bar="baz"} 34.44
|
|
bar{a="b",c="d"} -3e4
|
|
`, &ScrapeWork{
|
|
HonorLabels: true,
|
|
SampleLimit: 1,
|
|
}, `
|
|
up 0 123
|
|
scrape_samples_scraped 2 123
|
|
scrape_duration_seconds 0 123
|
|
scrape_samples_post_metric_relabeling 0 123
|
|
scrape_series_added 0 123
|
|
`)
|
|
}
|
|
|
|
func parseData(data string) []prompbmarshal.TimeSeries {
|
|
var rows parser.Rows
|
|
errLogger := func(s string) {
|
|
panic(fmt.Errorf("unexpected error when unmarshaling Prometheus rows: %s", s))
|
|
}
|
|
rows.UnmarshalWithErrLogger(data, errLogger)
|
|
var tss []prompbmarshal.TimeSeries
|
|
for _, r := range rows.Rows {
|
|
labels := []prompbmarshal.Label{
|
|
{
|
|
Name: "__name__",
|
|
Value: r.Metric,
|
|
},
|
|
}
|
|
for _, tag := range r.Tags {
|
|
labels = append(labels, prompbmarshal.Label{
|
|
Name: tag.Key,
|
|
Value: tag.Value,
|
|
})
|
|
}
|
|
var ts prompbmarshal.TimeSeries
|
|
ts.Labels = labels
|
|
ts.Samples = []prompbmarshal.Sample{
|
|
{
|
|
Value: r.Value,
|
|
Timestamp: r.Timestamp,
|
|
},
|
|
}
|
|
tss = append(tss, ts)
|
|
}
|
|
return tss
|
|
}
|
|
|
|
func expectEqualTimeseries(tss, tssExpected []prompbmarshal.TimeSeries) error {
|
|
m, err := timeseriesToMap(tss)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid generated timeseries: %w", err)
|
|
}
|
|
mExpected, err := timeseriesToMap(tssExpected)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid expected timeseries: %w", err)
|
|
}
|
|
if len(m) != len(mExpected) {
|
|
return fmt.Errorf("unexpected time series len; got %d; want %d", len(m), len(mExpected))
|
|
}
|
|
for k, tsExpected := range mExpected {
|
|
ts := m[k]
|
|
if ts != tsExpected {
|
|
return fmt.Errorf("unexpected timeseries %q;\ngot\n%s\nwant\n%s", k, ts, tsExpected)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func timeseriesToMap(tss []prompbmarshal.TimeSeries) (map[string]string, error) {
|
|
m := make(map[string]string, len(tss))
|
|
for i := range tss {
|
|
ts := &tss[i]
|
|
if len(ts.Labels) == 0 {
|
|
return nil, fmt.Errorf("unexpected empty labels for timeseries #%d; timeseries: %#v", i, ts)
|
|
}
|
|
if len(ts.Samples) != 1 {
|
|
return nil, fmt.Errorf("unexpected number of samples for timeseries #%d; got %d; want %d", i, len(ts.Samples), 1)
|
|
}
|
|
if ts.Labels[0].Name != "__name__" {
|
|
return nil, fmt.Errorf("unexpected first name for timeseries #%d; got %q; want %q", i, ts.Labels[0].Name, "__name__")
|
|
}
|
|
if ts.Labels[0].Value == "scrape_duration_seconds" {
|
|
// Reset scrape_duration_seconds value to 0, since it is non-deterministic
|
|
ts.Samples[0].Value = 0
|
|
}
|
|
m[ts.Labels[0].Value] = timeseriesToString(ts)
|
|
}
|
|
return m, nil
|
|
}
|
|
|
|
func timeseriesToString(ts *prompbmarshal.TimeSeries) string {
|
|
promrelabel.SortLabels(ts.Labels)
|
|
var sb strings.Builder
|
|
fmt.Fprintf(&sb, "{")
|
|
for i, label := range ts.Labels {
|
|
fmt.Fprintf(&sb, "%s=%q", label.Name, label.Value)
|
|
if i+1 < len(ts.Labels) {
|
|
fmt.Fprintf(&sb, ",")
|
|
}
|
|
}
|
|
fmt.Fprintf(&sb, "} ")
|
|
if len(ts.Samples) != 1 {
|
|
panic(fmt.Errorf("expecting a single sample; got %d samples", len(ts.Samples)))
|
|
}
|
|
s := ts.Samples[0]
|
|
fmt.Fprintf(&sb, "%g %d", s.Value, s.Timestamp)
|
|
return sb.String()
|
|
}
|