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// SPDX-License-Identifier: GPL-3.0-or-later
package pipeline
import (
"regexp"
"strconv"
"text/template"
"github.com/netdata/netdata/go/go.d.plugin/pkg/matcher"
"github.com/Masterminds/sprig/v3"
"github.com/bmatcuk/doublestar/v4"
)
func newFuncMap() template.FuncMap {
custom := map[string]interface{}{
"match": funcMatchAny,
"glob": func(value, pattern string, patterns ...string) bool {
return funcMatchAny("glob", value, pattern, patterns...)
},
"promPort": func(port string) string {
v, _ := strconv.Atoi(port)
return prometheusPortAllocations[v]
},
}
fm := sprig.HermeticTxtFuncMap()
for name, fn := range custom {
fm[name] = fn
}
return fm
}
func funcMatchAny(typ, value, pattern string, patterns ...string) bool {
switch len(patterns) {
case 0:
return funcMatch(typ, value, pattern)
default:
return funcMatch(typ, value, pattern) || funcMatchAny(typ, value, patterns[0], patterns[1:]...)
}
}
func funcMatch(typ string, value, pattern string) bool {
switch typ {
case "glob", "":
m, err := matcher.NewGlobMatcher(pattern)
return err == nil && m.MatchString(value)
case "sp":
m, err := matcher.NewSimplePatternsMatcher(pattern)
return err == nil && m.MatchString(value)
case "re":
ok, err := regexp.MatchString(pattern, value)
return err == nil && ok
case "dstar":
ok, err := doublestar.Match(pattern, value)
return err == nil && ok
default:
return false
}
}
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