micro/config/reader/json/values.go
2020-01-28 11:38:55 -08:00

202 lines
3.2 KiB
Go

package json
import (
"encoding/json"
"fmt"
"strconv"
"strings"
"time"
simple "github.com/bitly/go-simplejson"
"github.com/micro/go-micro/config/reader"
"github.com/micro/go-micro/config/source"
)
type jsonValues struct {
ch *source.ChangeSet
sj *simple.Json
}
type jsonValue struct {
*simple.Json
}
func newValues(ch *source.ChangeSet) (reader.Values, error) {
sj := simple.New()
data, _ := reader.ReplaceEnvVars(ch.Data)
if err := sj.UnmarshalJSON(data); err != nil {
sj.SetPath(nil, string(ch.Data))
}
return &jsonValues{ch, sj}, nil
}
func (j *jsonValues) Get(path ...string) reader.Value {
return &jsonValue{j.sj.GetPath(path...)}
}
func (j *jsonValues) Del(path ...string) {
// delete the tree?
if len(path) == 0 {
j.sj = simple.New()
return
}
if len(path) == 1 {
j.sj.Del(path[0])
return
}
vals := j.sj.GetPath(path[:len(path)-1]...)
vals.Del(path[len(path)-1])
j.sj.SetPath(path[:len(path)-1], vals.Interface())
return
}
func (j *jsonValues) Set(val interface{}, path ...string) {
j.sj.SetPath(path, val)
}
func (j *jsonValues) Bytes() []byte {
b, _ := j.sj.MarshalJSON()
return b
}
func (j *jsonValues) Map() map[string]interface{} {
m, _ := j.sj.Map()
return m
}
func (j *jsonValues) Scan(v interface{}) error {
b, err := j.sj.MarshalJSON()
if err != nil {
return err
}
return json.Unmarshal(b, v)
}
func (j *jsonValues) String() string {
return "json"
}
func (j *jsonValue) Bool(def bool) bool {
b, err := j.Json.Bool()
if err == nil {
return b
}
str, ok := j.Interface().(string)
if !ok {
return def
}
b, err = strconv.ParseBool(str)
if err != nil {
return def
}
return b
}
func (j *jsonValue) Int(def int) int {
i, err := j.Json.Int()
if err == nil {
return i
}
str, ok := j.Interface().(string)
if !ok {
return def
}
i, err = strconv.Atoi(str)
if err != nil {
return def
}
return i
}
func (j *jsonValue) String(def string) string {
return j.Json.MustString(def)
}
func (j *jsonValue) Float64(def float64) float64 {
f, err := j.Json.Float64()
if err == nil {
return f
}
str, ok := j.Interface().(string)
if !ok {
return def
}
f, err = strconv.ParseFloat(str, 64)
if err != nil {
return def
}
return f
}
func (j *jsonValue) Duration(def time.Duration) time.Duration {
v, err := j.Json.String()
if err != nil {
return def
}
value, err := time.ParseDuration(v)
if err != nil {
return def
}
return value
}
func (j *jsonValue) StringSlice(def []string) []string {
v, err := j.Json.String()
if err == nil {
sl := strings.Split(v, ",")
if len(sl) > 1 {
return sl
}
}
return j.Json.MustStringArray(def)
}
func (j *jsonValue) StringMap(def map[string]string) map[string]string {
m, err := j.Json.Map()
if err != nil {
return def
}
res := map[string]string{}
for k, v := range m {
res[k] = fmt.Sprintf("%v", v)
}
return res
}
func (j *jsonValue) Scan(v interface{}) error {
b, err := j.Json.MarshalJSON()
if err != nil {
return err
}
return json.Unmarshal(b, v)
}
func (j *jsonValue) Bytes() []byte {
b, err := j.Json.Bytes()
if err != nil {
// try return marshalled
b, err = j.Json.MarshalJSON()
if err != nil {
return []byte{}
}
return b
}
return b
}