/
input.go
182 lines (173 loc) · 4.65 KB
/
input.go
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package unittest
import (
"bytes"
"fmt"
"io"
"net/http"
"regexp"
"strconv"
"strings"
"time"
testutil "github.com/VictoriaMetrics/VictoriaMetrics/app/victoria-metrics/test"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/decimal"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
"github.com/VictoriaMetrics/metricsql"
)
// series holds input_series defined in the test file
type series struct {
Series string `yaml:"series"`
Values string `yaml:"values"`
}
// sequenceValue is an omittable value in a sequence of time series values.
type sequenceValue struct {
Value float64
Omitted bool
}
func httpWrite(address string, r io.Reader) {
resp, err := http.Post(address, "", r)
if err != nil {
logger.Fatalf("failed to send to storage: %v", err)
}
resp.Body.Close()
}
// writeInputSeries send input series to vmstorage and flush them
func writeInputSeries(input []series, interval *promutils.Duration, startStamp time.Time, dst string) error {
r := testutil.WriteRequest{}
for _, data := range input {
expr, err := metricsql.Parse(data.Series)
if err != nil {
return fmt.Errorf("failed to parse series %s: %v", data.Series, err)
}
promvals, err := parseInputValue(data.Values, true)
if err != nil {
return fmt.Errorf("failed to parse input series value %s: %v", data.Values, err)
}
metricExpr, ok := expr.(*metricsql.MetricExpr)
if !ok {
return fmt.Errorf("failed to parse series %s to metric expr: %v", data.Series, err)
}
samples := make([]testutil.Sample, 0, len(promvals))
ts := startStamp
for _, v := range promvals {
if !v.Omitted {
samples = append(samples, testutil.Sample{
Timestamp: ts.UnixMilli(),
Value: v.Value,
})
}
ts = ts.Add(interval.Duration())
}
var ls []testutil.Label
for _, filter := range metricExpr.LabelFilterss[0] {
ls = append(ls, testutil.Label{Name: filter.Label, Value: filter.Value})
}
r.Timeseries = append(r.Timeseries, testutil.TimeSeries{Labels: ls, Samples: samples})
}
data, err := testutil.Compress(r)
if err != nil {
return fmt.Errorf("failed to compress data: %v", err)
}
// write input series to vm
httpWrite(dst, bytes.NewBuffer(data))
vmstorage.Storage.DebugFlush()
return nil
}
// parseInputValue support input like "1", "1+1x1 _ -4 3+20x1", see more examples in test.
func parseInputValue(input string, origin bool) ([]sequenceValue, error) {
var res []sequenceValue
items := strings.Split(input, " ")
reg := regexp.MustCompile(`\D?\d*\D?`)
for _, item := range items {
if item == "stale" {
res = append(res, sequenceValue{Value: decimal.StaleNaN})
continue
}
vals := reg.FindAllString(item, -1)
switch len(vals) {
case 1:
if vals[0] == "_" {
res = append(res, sequenceValue{Omitted: true})
continue
}
v, err := strconv.ParseFloat(vals[0], 64)
if err != nil {
return nil, err
}
res = append(res, sequenceValue{Value: v})
continue
case 2:
p1 := vals[0][:len(vals[0])-1]
v2, err := strconv.ParseInt(vals[1], 10, 64)
if err != nil {
return nil, err
}
option := vals[0][len(vals[0])-1]
switch option {
case '+':
v1, err := strconv.ParseFloat(p1, 64)
if err != nil {
return nil, err
}
res = append(res, sequenceValue{Value: v1 + float64(v2)})
case 'x':
for i := int64(0); i <= v2; i++ {
if p1 == "_" {
if i == 0 {
i = 1
}
res = append(res, sequenceValue{Omitted: true})
continue
}
v1, err := strconv.ParseFloat(p1, 64)
if err != nil {
return nil, err
}
if !origin || v1 == 0 {
res = append(res, sequenceValue{Value: v1 * float64(i)})
continue
}
newVal := fmt.Sprintf("%s+0x%s", p1, vals[1])
newRes, err := parseInputValue(newVal, false)
if err != nil {
return nil, err
}
res = append(res, newRes...)
break
}
default:
return nil, fmt.Errorf("got invalid operation %b", option)
}
case 3:
r1, err := parseInputValue(fmt.Sprintf("%s%s", vals[1], vals[2]), false)
if err != nil {
return nil, err
}
p1 := vals[0][:len(vals[0])-1]
v1, err := strconv.ParseFloat(p1, 64)
if err != nil {
return nil, err
}
option := vals[0][len(vals[0])-1]
var isAdd bool
if option == '+' {
isAdd = true
}
for _, r := range r1 {
if isAdd {
res = append(res, sequenceValue{
Value: r.Value + v1,
})
} else {
res = append(res, sequenceValue{
Value: v1 - r.Value,
})
}
}
default:
return nil, fmt.Errorf("unsupported input %s", input)
}
}
return res, nil
}