Add lint Makefile target

Makefile

@@ -3,6 +3,7 @@
 GO_BIN ?= go
 GOFMT ?= gofmt
 GOIMPORTS ?= goimports
+GOLINT ?= golint
 SOURCE_FILES ?= ./...
 
 export GO111MODULE := on
@@ -15,6 +16,10 @@ test:
 cover: test
 	$(GO_BIN) tool cover -html=coverage.out
 
+.PHONY: lint
+lint:
+	$(GOLINT) ./...
+
 .PHONY: fmt
 fmt:
 	find . -name '*.go' -not -wholename './vendor/*' | \

cmd/root.go

@@ -22,6 +22,7 @@ const (
 	// TempFileStorePath TODO replate it
 	TempFileStorePath = "/Users/xuq3/workspace/drm/tem"
 
+	// CfgBlobPathKey represents the blobPath key in config.
 	CfgBlobPathKey = "blobPath"
 )
 

pkg/blobs/blobs.go

@@ -12,22 +12,29 @@ import (
 )
 
 const (
+	// MaxRandomNumber represents the random number range [0, MaxRandomNumber).
 	MaxRandomNumber int = 10000
 
+	// MetaDataDB represents the name of the file used for storing metadata.
 	MetaDataDB string = "data.db"
 
+	// CfgDataPathKey represents the dataPath key in config.
 	CfgDataPathKey = "dataPath"
 )
 
+// Blob represents the blob instance.
 type Blob struct {
+	// FileName represents the file name of the deleted file.
 	FileName string
-	Dir      string
+
+	// Dir represent where the blob stored before deleted.
+	Dir string
 
 	// CreatedAt represents when the blob is created, i.e. when it is deleted.
 	CreatedAt time.Time
 }
 
-// Create make a blob metadate.
+// Create makes a blob metadate.
 func Create(fullPath string) *Blob {
 	return &Blob{
 		FileName:  files.Name(fullPath),
@@ -36,14 +43,15 @@ func Create(fullPath string) *Blob {
 	}
 }
 
+// Name gets the name of the blob.
 func (b *Blob) Name() string {
 	return fmt.Sprintf("%d_%4d_%s",
 		b.CreatedAt.UnixNano(),
 		rand.Intn(MaxRandomNumber),
 		b.FileName)
 }
 
-// TODO
+// Save stores the blob metadata to disk.
 func (b *Blob) Save() error {
 	db, err := buntdb.Open(viper.GetString(CfgDataPathKey) + MetaDataDB)
 	if err != nil {