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|
package virtbuf
// functions to import and export the protobuf
// data to and from config files
import (
"fmt"
"os"
"path/filepath"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/encoding/prototext"
"google.golang.org/protobuf/reflect/protoreflect"
)
// save the events config file in both json and prototext
func (e *Events) ConfigSave() error {
if err := ConfigWriteJSON(e, "events.json"); err != nil {
return err
}
return ConfigWriteTEXT(e, "events.text")
}
// read in the events log file
// reads in from the prototext file
// prototext file formats are not garrenteed to be stable. todo: hammer that out
func (e *Events) ConfigRead() error {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.text")
data, err := os.ReadFile(fullname)
if err != nil {
return err
}
return prototext.Unmarshal(data, e)
}
// get the list of droplets from the config file
func (d *Droplets) ConfigRead() error {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.json")
data, err := os.ReadFile(fullname)
if err != nil {
return err
}
return protojson.Unmarshal(data, d)
/*
err = d.UnmarshalJSON(data)
if err != nil {
return err
}
return nil
*/
}
//func (e *Events) ConfigSave() error {
// return ConfigWriteJSON(e, "events.json")
//}
// save the droplet settings in a config file
// uses 'protojson.Format' which is more or less human readable
func (d *Droplets) ConfigSave() error {
return ConfigWriteJSON(d, "droplets.json")
/*
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.json")
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
fmt.Println("open config file :", err)
return err
}
text := protojson.Format(d)
fmt.Fprintln(cfgfile, text)
return nil
*/
}
func ConfigWriteJSON(a any, filename string) error {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), filename)
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
fmt.Println("open config file :", err)
return err
}
msg, ok := a.(protoreflect.ProtoMessage)
if !ok {
return fmt.Errorf("provided value does not implement protoreflect.ProtoMessage")
}
text := protojson.Format(msg)
fmt.Fprintln(cfgfile, text)
return nil
}
func ConfigWriteTEXT(a any, filename string) error {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), filename)
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
fmt.Println("open config file :", err)
return err
}
msg, ok := a.(protoreflect.ProtoMessage)
if !ok {
return fmt.Errorf("provided value does not implement protoreflect.ProtoMessage")
}
text := prototext.Format(msg)
fmt.Fprintln(cfgfile, text)
return nil
}
func WriteConfig(d *Droplets, h *Hypervisors, e *Events) bool {
if !d.WriteConfigJSON() {
return false
}
if !d.WriteConfigTEXT() {
return false
}
if err := e.WriteConfigJSON(); err != nil {
return false
}
if err := e.WriteConfigTEXT(); err != nil {
return false
}
return true
}
// read in events.json
func ReadEventsConfig() (*Events, error) {
e := new(Events)
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.json")
data, err := os.ReadFile(fullname)
if err != nil {
// log.Info("open config file :", err)
return nil, err
}
err = e.UnmarshalJSON(data)
if err != nil {
// log.Info("read json failed", err)
return nil, err
}
return e, nil
}
// export as json
func (e *Events) WriteConfigJSON() error {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.json")
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
fmt.Println("open config file :", err)
return err
}
text := e.FormatJSON()
fmt.Fprintln(cfgfile, text)
fmt.Println("Write:", fullname, "OK")
return nil
}
// export as prototext
func (e *Events) WriteConfigTEXT() error {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.text")
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
fmt.Println("open config file :", err)
return err
}
text := e.FormatTEXT()
fmt.Fprintln(cfgfile, text)
fmt.Println("Write:", fullname, "OK")
return nil
}
// export as json
func (d *Droplets) WriteConfigJSON() bool {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.json")
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
fmt.Println("open config file :", err)
return false
}
text := d.FormatJSON()
fmt.Fprintln(cfgfile, text)
fmt.Println("Write:", fullname, "OK")
return true
}
// export as prototext
func (d *Droplets) WriteConfigTEXT() bool {
fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.text")
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
fmt.Println("open config file :", err)
return false
}
text := d.FormatTEXT()
fmt.Fprintln(cfgfile, text)
fmt.Println("Write:", fullname, "OK")
return true
}
// human readable JSON
func (c *Cluster) FormatJSON() string {
return protojson.Format(c)
}
func (d *Droplets) FormatJSON() string {
return protojson.Format(d)
}
func (e *Events) FormatJSON() string {
return protojson.Format(e)
}
// apparently this isn't supposed to be used?
// https://protobuf.dev/reference/go/faq/#unstable-text
// this is a shame because this is much nicer output than JSON Format()
func (c *Cluster) FormatTEXT() string {
return prototext.Format(c)
}
func (d *Droplets) FormatTEXT() string {
return prototext.Format(d)
}
func (e *Events) FormatTEXT() string {
return prototext.Format(e)
}
// marshal
func (c *Cluster) MarshalJSON() ([]byte, error) {
return protojson.Marshal(c)
}
func (d *Droplets) MarshalJSON() ([]byte, error) {
return protojson.Marshal(d)
}
func (e *Events) MarshalJSON() ([]byte, error) {
return protojson.Marshal(e)
}
// unmarshal
func (c *Cluster) UnmarshalJSON(data []byte) error {
return protojson.Unmarshal(data, c)
}
func (d *Droplets) UnmarshalJSON(data []byte) error {
return protojson.Unmarshal(data, d)
}
func (e *Events) UnmarshalJSON(data []byte) error {
return protojson.Unmarshal(data, e)
}
|
