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package config
import (
"fmt"
"os"
"path/filepath"
"strings"
"go.wit.com/log"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/encoding/prototext"
"google.golang.org/protobuf/proto"
)
var ErrProtoFilename error = log.Errorf("proto does not have Filename")
func ConfigSave(pb proto.Message) error {
// get pb.Filename if it is there in the .proto file
fullname, ok := GetFilename(pb)
if !ok {
return ErrProtoFilename
}
s := prototext.Format(pb)
dir, name := filepath.Split(fullname)
if name == "" {
return fmt.Errorf("filename was blank")
}
err := os.MkdirAll(dir, os.ModePerm)
if err != nil {
return err
}
log.Infof("ConfigSave() filename=%s %d\n", fullname, len(s))
return configWrite(fullname, []byte(s))
}
func ConfigSaveWithHeader(pb proto.Message, header string) error {
// get pb.Filename if it is there in the .proto file
fullname, ok := GetFilename(pb)
if !ok {
return ErrProtoFilename
}
dir, name := filepath.Split(fullname)
if name == "" {
return fmt.Errorf("filename was blank")
}
if err := os.MkdirAll(dir, os.ModePerm); err != nil {
return err
}
var final error
if err := configTEXT(fullname, pb, header); err != nil {
final = err
}
if strings.HasSuffix(fullname, ".text") {
fullname = strings.TrimSuffix(fullname, ".text")
fullname += ".json"
if err := configJSON(fullname, pb); err != nil {
final = err
}
}
return final
}
func configTEXT(fullname string, pb proto.Message, header string) error {
s := prototext.Format(pb)
log.Infof("ConfigSave() filename=%s %d\n", fullname, len(s))
return configWrite(fullname, []byte(header+s))
}
func configJSON(fullname string, pb proto.Message) error {
data := protojson.Format(pb)
log.Infof("ConfigSave() filename=%s %d\n", fullname, len(data))
return configWrite(fullname, []byte(data))
}
func configWrite(fullname string, data []byte) error {
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
defer cfgfile.Close()
if err != nil {
log.Warn("open config file :", err)
return err
}
_, err = cfgfile.Write(data)
return err
}
/*
func (e *Events) Save() {
var fullname string
base, _ := filepath.Split(argv.Config)
fullname = filepath.Join(base, "events.pb")
data, err := e.Marshal()
if err != nil {
log.Info("proto.Marshal() failed", err)
return
}
log.Info("proto.Marshal() worked len", len(data))
configWrite(fullname, data)
}
*/
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