func (t *Test) parseEval(lines []string, i int) (int, *evalCmd, error) {
if !patEvalInstant.MatchString(lines[i]) {
return i, nil, raise(i, "invalid evaluation command. (eval[_fail|_ordered] instant [at <offset:duration>] <query>")
}
parts := patEvalInstant.FindStringSubmatch(lines[i])
var (
mod = parts[1]
at = parts[2]
qry = parts[3]
)
expr, err := ParseExpr(qry)
if err != nil {
if perr, ok := err.(*ParseErr); ok {
perr.Line = i + 1
perr.Pos += strings.Index(lines[i], qry)
}
return i, nil, err
}
offset, err := model.ParseDuration(at)
if err != nil {
return i, nil, raise(i, "invalid step definition %q: %s", parts[1], err)
}
ts := testStartTime.Add(time.Duration(offset))
cmd := newEvalCmd(expr, ts, ts, 0)
switch mod {
case "ordered":
cmd.ordered = true
case "fail":
cmd.fail = true
}
for j := 1; i+1 < len(lines); j++ {
i++
defLine := lines[i]
if len(defLine) == 0 {
i--
break
}
if f, err := parseNumber(defLine); err == nil {
cmd.expect(0, nil, sequenceValue{value: model.SampleValue(f)})
break
}
metric, vals, err := parseSeriesDesc(defLine)
if err != nil {
if perr, ok := err.(*ParseErr); ok {
perr.Line = i + 1
}
return i, nil, err
}
// Currently, we are not expecting any matrices.
if len(vals) > 1 {
return i, nil, raise(i, "expecting multiple values in instant evaluation not allowed")
}
cmd.expect(j, metric, vals...)
}
return i, cmd, nil
}
func (t *Test) parseLoad(lines []string, i int) (int, *loadCmd, error) {
if !patLoad.MatchString(lines[i]) {
return i, nil, raise(i, "invalid load command. (load <step:duration>)")
}
parts := patLoad.FindStringSubmatch(lines[i])
gap, err := model.ParseDuration(parts[1])
if err != nil {
return i, nil, raise(i, "invalid step definition %q: %s", parts[1], err)
}
cmd := newLoadCmd(time.Duration(gap))
for i+1 < len(lines) {
i++
defLine := lines[i]
if len(defLine) == 0 {
i--
break
}
metric, vals, err := parseSeriesDesc(defLine)
if err != nil {
if perr, ok := err.(*ParseErr); ok {
perr.Line = i + 1
}
return i, nil, err
}
cmd.set(metric, vals...)
}
return i, cmd, nil
}
func parseDuration(s string) (time.Duration, error) {
if d, err := strconv.ParseFloat(s, 64); err == nil {
return time.Duration(d * float64(time.Second)), nil
}
if d, err := model.ParseDuration(s); err == nil {
return time.Duration(d), nil
}
return 0, fmt.Errorf("cannot parse %q to a valid duration", s)
}
func parseDuration(ds string) (time.Duration, error) {
dur, err := model.ParseDuration(ds)
if err != nil {
return 0, err
}
if dur == 0 {
return 0, fmt.Errorf("duration must be greater than 0")
}
return time.Duration(dur), nil
}