fix: security scanner warning noise: error handlers part 1 (#2141)

first group of error handlers to reduce security scanner warning noise level

Signed-off-by: Dave Lee <dave@gray101.com>

core/backend/options.go

@@ -7,7 +7,8 @@ import (
 
 	"github.com/go-skynet/LocalAI/core/config"
 	pb "github.com/go-skynet/LocalAI/pkg/grpc/proto"
-	model "github.com/go-skynet/LocalAI/pkg/model"
+	"github.com/go-skynet/LocalAI/pkg/model"
+	"github.com/rs/zerolog/log"
 )
 
 func modelOpts(c config.BackendConfig, so *config.ApplicationConfig, opts []model.Option) []model.Option {
@@ -109,8 +110,12 @@ func gRPCPredictOpts(c config.BackendConfig, modelPath string) *pb.PredictOption
 	promptCachePath := ""
 	if c.PromptCachePath != "" {
 		p := filepath.Join(modelPath, c.PromptCachePath)
-		os.MkdirAll(filepath.Dir(p), 0750)
+		err := os.MkdirAll(filepath.Dir(p), 0750)
+		if err == nil {
 			promptCachePath = p
+		} else {
+			log.Error().Err(err).Str("promptCachePath", promptCachePath).Msg("error creating prompt cache folder")
+		}
 	}
 
 	return &pb.PredictOptions{

core/startup/startup.go

@@ -122,7 +122,10 @@ func Startup(opts ...config.AppOption) (*config.BackendConfigLoader, *model.Mode
 	// Watch the configuration directory
 	// If the directory does not exist, we don't watch it
 	configHandler := newConfigFileHandler(options)
-	configHandler.Watch()
+	err = configHandler.Watch()
+	if err != nil {
+		log.Error().Err(err).Msg("error establishing configuration directory watcher")
+	}
 
 	log.Info().Msg("core/startup process completed!")
 	return cl, ml, options, nil

embedded/embedded.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"github.com/go-skynet/LocalAI/pkg/downloader"
+	"github.com/rs/zerolog/log"
 
 	"github.com/go-skynet/LocalAI/pkg/assets"
 	"gopkg.in/yaml.v3"
@@ -29,7 +30,10 @@ func ModelShortURL(s string) string {
 }
 
 func init() {
-	yaml.Unmarshal(modelLibrary, &modelShorteners)
+	err := yaml.Unmarshal(modelLibrary, &modelShorteners)
+	if err != nil {
+		log.Error().Err(err).Msg("error while unmarshalling embedded modelLibrary")
+	}
 }
 
 func GetRemoteLibraryShorteners(url string) (map[string]string, error) {

examples/semantic-todo/main.go

@@ -239,7 +239,10 @@ func (app *App) updateUI() {
 					task := Task{Description: inputField.GetText()}
 					app.tasks = append(app.tasks, task)
 					app.state = StateRoot
-					postTasksToExternalService([]Task{task})
+					err := postTasksToExternalService([]Task{task})
+					if err != nil {
+						panic(err)
+					}
 				}
 				app.updateUI()
 			})

main.go

@@ -43,7 +43,11 @@ func main() {
 	for _, envFile := range envFiles {
 		if _, err := os.Stat(envFile); err == nil {
 			log.Info().Str("envFile", envFile).Msg("loading environment variables from file")
-			godotenv.Load(envFile)
+			err = godotenv.Load(envFile)
+			if err != nil {
+				log.Error().Err(err).Str("envFile", envFile).Msg("failed to load environment variables from file")
+				continue
+			}
 		}
 	}
 

pkg/assets/list.go

@@ -3,10 +3,12 @@ package assets
 import (
 	"embed"
 	"io/fs"
+
+	"github.com/rs/zerolog/log"
 )
 
 func ListFiles(content embed.FS) (files []string) {
-	fs.WalkDir(content, ".", func(path string, d fs.DirEntry, err error) error {
+	err := fs.WalkDir(content, ".", func(path string, d fs.DirEntry, err error) error {
 		if err != nil {
 			return err
 		}
@@ -18,5 +20,8 @@ func ListFiles(content embed.FS) (files []string) {
 		files = append(files, path)
 		return nil
 	})
+	if err != nil {
+		log.Error().Err(err).Msg("error walking the embedded filesystem")
+	}
 	return
 }

pkg/grpc/server.go

@@ -131,10 +131,10 @@ func (s *server) PredictStream(in *pb.PredictOptions, stream pb.Backend_PredictS
 		done <- true
 	}()
 
-	s.llm.PredictStream(in, resultChan)
+	err := s.llm.PredictStream(in, resultChan)
 	<-done
 
-	return nil
+	return err
 }
 
 func (s *server) TokenizeString(ctx context.Context, in *pb.PredictOptions) (*pb.TokenizationResponse, error) {