lint fixes (#14)

* lint fixes

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

util/file/client.go

@@ -3,13 +3,12 @@ package file
 import (
 	"bufio"
 	"context"
-	"errors"
 	"fmt"
 	"io"
-	"log"
 	"os"
 
 	"github.com/unistack-org/micro/v3/client"
+	"github.com/unistack-org/micro/v3/logger"
 	proto "github.com/unistack-org/micro/v3/util/file/proto"
 )
 
@@ -156,7 +155,7 @@ func (c *fc) DownloadAt(filename, saveFile string, blockId int) error {
 		return err
 	}
 	if stat.Type == "Directory" {
-		return errors.New(fmt.Sprintf("%s is directory.", filename))
+		return fmt.Errorf("%s is directory.", filename)
 	}
 
 	blocks := int(stat.Size / blockSize)
@@ -164,7 +163,7 @@ func (c *fc) DownloadAt(filename, saveFile string, blockId int) error {
 		blocks += 1
 	}
 
-	log.Printf("Download %s in %d blocks\n", filename, blocks-blockId)
+	logger.Infof("Download %s in %d blocks", filename, blocks-blockId)
 
 	file, err := os.OpenFile(saveFile, os.O_CREATE|os.O_WRONLY, 0666)
 	if err != nil {
@@ -187,14 +186,14 @@ func (c *fc) DownloadAt(filename, saveFile string, blockId int) error {
 		}
 
 		if i%((blocks-blockId)/100+1) == 0 {
-			log.Printf("Downloading %s [%d/%d] blocks", filename, i-blockId+1, blocks-blockId)
+			logger.Infof("Downloading %s [%d/%d] blocks", filename, i-blockId+1, blocks-blockId)
 		}
 
 		if rerr == io.EOF {
 			break
 		}
 	}
-	log.Printf("Download %s completed", filename)
+	logger.Infof("Download %s completed", filename)
 
 	c.Close(sessionId)
 

util/file/handler.go

@@ -37,7 +37,7 @@ func (h *handler) Open(ctx context.Context, req *proto.OpenRequest, rsp *proto.O
 	path := filepath.Join(h.readDir, req.Filename)
 	flags := os.O_CREATE | os.O_RDWR
 	if req.GetTruncate() {
-		flags = flags | os.O_TRUNC
+		flags |= os.O_TRUNC
 	}
 	file, err := os.OpenFile(path, flags, 0666)
 	if err != nil {