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settings.go
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settings.go
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package types
import (
"bytes"
"encoding/json"
"fmt"
"strings"
"time"
"github.com/jmoiron/sqlx/types"
)
type (
SettingValue struct {
Name string `json:"name"`
Value types.JSONText `json:"value"`
// Setting owner, 0 for global settings
OwnedBy uint64 `json:"-"`
// Who updated & when
UpdatedAt time.Time `json:"updatedAt"`
UpdatedBy uint64 `json:"updatedBy"`
}
SettingsFilter struct {
Prefix string `json:"prefix"`
OwnedBy uint64 `json:"ownedBy"`
// Check fn is called by store backend for each resource found function can
// modify the resource and return false if store should not return it
//
// Store then loads additional resources to satisfy the paging parameters
Check func(*SettingValue) (bool, error) `json:"-"`
Limit uint `json:"-"`
}
SettingsKV map[string]types.JSONText
)
func MakeSettingValue(name string, value interface{}) *SettingValue {
o := &SettingValue{Name: name}
_ = o.SetSetting(value)
return o
}
// These functions exist only to satisfy pkg/envoyx interfaces
func (v *SettingValue) GetID() uint64 {
return 0
}
func (v *SettingValue) GetValue(string, uint) (any, error) {
return nil, fmt.Errorf("unexpected scenario: GetValue not implemented")
}
func (v *SettingValue) SetValue(string, uint, any) error {
return fmt.Errorf("unexpected scenario: SetValue not implemented")
}
// -----------------------------------------------------------
func (v *SettingValue) SetRawSetting(str string) error {
var dummy interface{}
// Test input to be sure we can save it...
if err := json.Unmarshal([]byte(str), &dummy); err != nil {
return err
}
v.Value = types.JSONText(str)
return nil
}
func (v *SettingValue) SetSetting(value interface{}) (err error) {
buf := bytes.Buffer{}
enc := json.NewEncoder(&buf)
enc.SetEscapeHTML(false)
if err = enc.Encode(value); err != nil {
return err
}
v.Value = bytes.TrimSpace(buf.Bytes())
return
}
func (v *SettingValue) String() (out string) {
if v == nil {
return ""
}
_ = v.Value.Unmarshal(&out)
return
}
func (v *SettingValue) Bool() (out bool) {
if v == nil {
return false
}
_ = v.Value.Unmarshal(&out)
return
}
func (v *SettingValue) IsNull() (out bool) {
return v == nil || string(v.Value) == "null" || string(v.Value) == ""
}
func (v *SettingValue) NormalizeValue() {
}
func (v *SettingValue) Eq(c *SettingValue) bool {
return v != nil &&
c != nil &&
v.Name == c.Name &&
v.OwnedBy == c.OwnedBy &&
fmt.Sprintf("%v", v.Value) == fmt.Sprintf("%v", c.Value)
}
func (set SettingValueSet) FilterByPrefix(prefix string) SettingValueSet {
pf := SettingValueSet{}
for _, v := range set {
if strings.HasPrefix(v.Name, prefix) {
pf = append(pf, v)
}
}
return pf
}
func (set SettingValueSet) FindByName(name string) *SettingValue {
for _, v := range set {
if v.Name == name {
return v
}
}
return nil
}
func (set SettingValueSet) KV() SettingsKV {
m := SettingsKV{}
_ = set.Walk(func(v *SettingValue) error {
m[v.Name] = v.Value
return nil
})
return m
}
func (kv SettingsKV) Has(k string) (ok bool) {
_, ok = kv[k]
return
}
func (kv SettingsKV) Bool(k string) (out bool) {
out = false
if v, ok := kv[k]; ok {
_ = v.Unmarshal(&out)
}
return
}
func (kv SettingsKV) String(k string) (out string) {
out = ""
if v, ok := kv[k]; ok {
_ = v.Unmarshal(&out)
}
return
}
func (kv SettingsKV) Filter(prefix string) SettingsKV {
var out = SettingsKV{}
for k, v := range kv {
if strings.Index(k, prefix) == 0 {
out[k] = v
}
}
return out
}
// CutPrefix returns values with matching prefix and removes the prefix from keys
func (kv SettingsKV) CutPrefix(prefix string) SettingsKV {
var out = SettingsKV{}
for k, v := range kv {
if strings.Index(k, prefix) == 0 {
out[k[len(prefix):]] = v
}
}
return out
}
// Decode is a helper function on SettingsKV that calls DecodeKV() and passes on the dst
func (kv SettingsKV) Decode(dst interface{}) error {
return DecodeKV(kv, dst)
}
// Replace finds and updates existing or appends new value
func (set *SettingValueSet) Replace(n *SettingValue) {
for _, v := range *set {
if v.Name == n.Name {
v.Value = n.Value
return
}
}
*set = append(*set, n)
}
// Replace finds and updates existing or appends new value
func (set *SettingValueSet) Has(name string) bool {
return set.First(name) != nil
}
// First finds and returns first value
func (set SettingValueSet) First(name string) *SettingValue {
for _, v := range set {
if v.Name == name {
return v
}
}
return nil
}
// Returns all valus that changed or do not exist in the original set
func (set SettingValueSet) Changed(in SettingValueSet) (out SettingValueSet) {
input:
for _, i := range in {
for _, s := range set {
if s.Name != i.Name {
// Different name, not interested
continue
}
if s.Eq(i) {
// SettingValue did not change, continue with next input set
continue input
}
// SettingValue changed, break out the loop
break
}
// Handle changed or missing value
out = append(out, i)
}
return
}
// New returns all new values (that do not exist in the original set)
func (set SettingValueSet) New(in SettingValueSet) (out SettingValueSet) {
org := set.KV()
for _, v := range in {
if !org.Has(v.Name) && !v.IsNull() {
out = append(out, v)
}
}
return
}
// New returns all old values (that exist in the original set)
func (set SettingValueSet) Old(in SettingValueSet) (out SettingValueSet) {
org := set.KV()
for _, v := range in {
if org.Has(v.Name) && !v.IsNull() {
out = append(out, v)
}
}
return
}
// Trash returns values from the set that were set ti nil
func (set SettingValueSet) Trash() (out SettingValueSet) {
for _, v := range set {
if v.IsNull() {
out = append(out, v)
}
}
return
}