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params.go
65 lines (52 loc) · 1.23 KB
/
params.go
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package compiler
import (
"fmt"
"reflect"
"strconv"
"strings"
json "github.com/ghodss/yaml"
"gopkg.in/yaml.v2"
)
// paramsToEnv uses reflection to convert a map[string]interface to a list
// of environment variables.
func paramsToEnv(from map[string]interface{}, to map[string]string) error {
for k, v := range from {
if v == nil {
continue
}
t := reflect.TypeOf(v)
vv := reflect.ValueOf(v)
k = "PLUGIN_" + strings.ToUpper(k)
switch t.Kind() {
case reflect.Bool:
to[k] = strconv.FormatBool(vv.Bool())
case reflect.String:
to[k] = vv.String()
case reflect.Int, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int8:
to[k] = fmt.Sprintf("%v", vv.Int())
case reflect.Float32, reflect.Float64:
to[k] = fmt.Sprintf("%v", vv.Float())
case reflect.Map:
yml, _ := yaml.Marshal(vv.Interface())
out, _ := json.YAMLToJSON(yml)
to[k] = string(out)
case reflect.Slice:
out, err := yaml.Marshal(vv.Interface())
if err != nil {
return err
}
in := []string{}
err = yaml.Unmarshal(out, &in)
if err == nil {
to[k] = strings.Join(in, ",")
} else {
out, err = json.YAMLToJSON(out)
if err != nil {
return err
}
to[k] = string(out)
}
}
}
return nil
}