LocalAI/core/startup/config_file_watcher.go
cryptk b85dad0286
feat: first pass at improving logging (#1956)
Signed-off-by: Chris Jowett <421501+cryptk@users.noreply.github.com>
2024-04-04 09:24:22 +02:00

101 lines
2.6 KiB
Go

package startup
import (
"encoding/json"
"fmt"
"os"
"path"
"github.com/fsnotify/fsnotify"
"github.com/go-skynet/LocalAI/core/config"
"github.com/imdario/mergo"
"github.com/rs/zerolog/log"
)
type WatchConfigDirectoryCloser func() error
func ReadApiKeysJson(configDir string, appConfig *config.ApplicationConfig) error {
fileContent, err := os.ReadFile(path.Join(configDir, "api_keys.json"))
if err == nil {
// Parse JSON content from the file
var fileKeys []string
err := json.Unmarshal(fileContent, &fileKeys)
if err == nil {
appConfig.ApiKeys = append(appConfig.ApiKeys, fileKeys...)
return nil
}
return err
}
return err
}
func ReadExternalBackendsJson(configDir string, appConfig *config.ApplicationConfig) error {
fileContent, err := os.ReadFile(path.Join(configDir, "external_backends.json"))
if err != nil {
return err
}
// Parse JSON content from the file
var fileBackends map[string]string
err = json.Unmarshal(fileContent, &fileBackends)
if err != nil {
return err
}
err = mergo.Merge(&appConfig.ExternalGRPCBackends, fileBackends)
if err != nil {
return err
}
return nil
}
var CONFIG_FILE_UPDATES = map[string]func(configDir string, appConfig *config.ApplicationConfig) error{
"api_keys.json": ReadApiKeysJson,
"external_backends.json": ReadExternalBackendsJson,
}
func WatchConfigDirectory(configDir string, appConfig *config.ApplicationConfig) (WatchConfigDirectoryCloser, error) {
if len(configDir) == 0 {
return nil, fmt.Errorf("configDir blank")
}
configWatcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal().Msgf("Unable to create a watcher for the LocalAI Configuration Directory: %+v", err)
}
ret := func() error {
configWatcher.Close()
return nil
}
// Start listening for events.
go func() {
for {
select {
case event, ok := <-configWatcher.Events:
if !ok {
return
}
if event.Has(fsnotify.Write) {
for targetName, watchFn := range CONFIG_FILE_UPDATES {
if event.Name == targetName {
err := watchFn(configDir, appConfig)
log.Warn().Msgf("WatchConfigDirectory goroutine for %s: failed to update options: %+v", targetName, err)
}
}
}
case _, ok := <-configWatcher.Errors:
if !ok {
return
}
log.Error().Err(err).Msg("error encountered while watching config directory")
}
}
}()
// Add a path.
err = configWatcher.Add(configDir)
if err != nil {
return ret, fmt.Errorf("unable to establish watch on the LocalAI Configuration Directory: %+v", err)
}
return ret, nil
}