/
tag.go
73 lines (61 loc) · 1.72 KB
/
tag.go
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// Copyright © 2022 Banzai Cloud
//
// 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 config
import (
"reflect"
"strings"
)
const syslogNGTagName = "syslog-ng"
func structFieldSettings(f reflect.StructField) syslogNGTagSettings {
return parseSettingsFromTag(f.Tag.Get(syslogNGTagName))
}
func parseSettingsFromTag(tag string) (settings syslogNGTagSettings) {
if tag == "" {
return
}
settings = make(map[string]string)
for _, setting := range strings.Split(tag, ",") {
switch s := strings.SplitN(setting, "=", 2); len(s) {
case 0: // ignore empty setting
case 1:
if s[0] != "" {
settings[s[0]] = ""
}
case 2:
settings[s[0]] = s[1]
}
}
return
}
type syslogNGTagSettings map[string]string
func (s syslogNGTagSettings) Has(key string) bool {
_, ok := s[key]
return ok
}
func (s syslogNGTagSettings) Ignore() bool {
return s.Has("ignore")
}
func (s syslogNGTagSettings) Name() string {
return s["name"]
}
func (s syslogNGTagSettings) Optional() bool {
return s.Has("optional")
}
func jsonNameOf(f reflect.StructField) string {
name, _, _ := strings.Cut(f.Tag.Get("json"), ",")
return name
}
func hasJSONOmitempty(f reflect.StructField) bool {
return strings.Contains(f.Tag.Get("json"), ",omitempty")
}