deploy --src accepts a zip file.

README.md

@@ -142,7 +142,7 @@ Flags:
   --region="ap-northeast-1"   AWS region
   --log-level=info            log level (trace, debug, info, warn, error)
   --function="function.json"  Function file path
-  --src="."                   function zip archive src dir
+  --src="."                   function zip archive or src dir
   --exclude-file=".lambdaignore"  
                               exclude file
   --dry-run                   dry run

archive.go

@@ -21,7 +21,7 @@ func (app *App) Archive(opt DeployOption) error {
 		return errors.Wrap(err, "failed to validate deploy options")
 	}
 
-	zipfile, _, err := createZipArchive(*opt.SrcDir, opt.Excludes)
+	zipfile, _, err := createZipArchive(*opt.Src, opt.Excludes)
 	if err != nil {
 		return err
 	}
@@ -30,6 +30,31 @@ func (app *App) Archive(opt DeployOption) error {
 	return err
 }
 
+func loadZipArchive(src string) (*os.File, os.FileInfo, error) {
+	log.Printf("[info] reading zip archive from %s", src)
+	r, err := zip.OpenReader(src)
+	if err != nil {
+		return nil, nil, errors.Wrapf(err, "failed to open zip file %s", src)
+	}
+	for _, f := range r.File {
+		header := f.FileHeader
+		log.Printf("[debug] %s %10d %s %s",
+			header.Mode(),
+			header.UncompressedSize64,
+			header.Modified.Format(time.RFC3339),
+			header.Name,
+		)
+	}
+	r.Close()
+	info, err := os.Stat(src)
+	if err != nil {
+		return nil, nil, errors.Wrapf(err, "failed to stat %s", src)
+	}
+	log.Printf("[info] zip archive %d bytes", info.Size())
+	fh, err := os.Open(src)
+	return fh, info, err
+}
+
 // createZipArchive creates a zip archive
 func createZipArchive(src string, excludes []string) (*os.File, os.FileInfo, error) {
 	log.Printf("[info] creating zip archive from %s", src)

archive_test.go

@@ -40,3 +40,23 @@ func TestCreateZipArchive(t *testing.T) {
 		t.Errorf("too small file got %d bytes", info.Size())
 	}
 }
+
+func TestLoadZipArchive(t *testing.T) {
+	r, info, err := lambroll.LoadZipArchive("test/src.zip")
+	if err != nil {
+		t.Error("failed to LoadZipArchive", err)
+	}
+	defer r.Close()
+
+	if info.Size() < 100 {
+		t.Errorf("too small file got %d bytes", info.Size())
+	}
+}
+
+func TestLoadNotZipArchive(t *testing.T) {
+	_, _, err := lambroll.LoadZipArchive("test/src/hello.txt")
+	if err == nil {
+		t.Error("must be failed to load not a zip file")
+	}
+	t.Log(err)
+}

cmd/lambroll/main.go

@@ -40,7 +40,7 @@ func _main() int {
 	deploy := kingpin.Command("deploy", "deploy or create function")
 	deployOption := lambroll.DeployOption{
 		FunctionFilePath: function,
-		SrcDir:           deploy.Flag("src", "function zip archive src dir").Default(".").String(),
+		Src:              deploy.Flag("src", "function zip archive or src dir").Default(".").String(),
 		ExcludeFile:      deploy.Flag("exclude-file", "exclude file").Default(lambroll.IgnoreFilename).String(),
 		DryRun:           deploy.Flag("dry-run", "dry run").Bool(),
 		Publish:          deploy.Flag("publish", "publish function").Default("true").Bool(),
@@ -69,7 +69,7 @@ func _main() int {
 
 	archive := kingpin.Command("archive", "archive zip")
 	archiveOption := lambroll.DeployOption{
-		SrcDir:      archive.Flag("src", "function zip archive src dir").Default(".").String(),
+		Src:         archive.Flag("src", "function src dir for archive").Default(".").String(),
 		ExcludeFile: archive.Flag("exclude-file", "exclude file").Default(lambroll.IgnoreFilename).String(),
 	}
 

create.go

@@ -14,12 +14,26 @@ import (
 var directUploadThreshold = int64(50 * 1024 * 1024) // 50MB
 
 func (app *App) prepareFunctionCodeForDeploy(opt DeployOption, fn *Function) error {
-	zipfile, info, err := createZipArchive(*opt.SrcDir, opt.Excludes)
-	if err != nil {
-		return err
+	var (
+		zipfile *os.File
+		info    os.FileInfo
+	)
+
+	if fi, err := os.Stat(*opt.Src); err != nil {
+		return errors.Wrapf(err, "src %s is not found", *opt.Src)
+	} else if fi.IsDir() {
+		zipfile, info, err = createZipArchive(fi.Name(), opt.Excludes)
+		if err != nil {
+			return err
+		}
+		defer os.Remove(zipfile.Name())
+	} else if !fi.IsDir() {
+		zipfile, info, err = loadZipArchive(fi.Name())
+		if err != nil {
+			return err
+		}
 	}
 	defer zipfile.Close()
-	defer os.Remove(zipfile.Name())
 
 	if fn.Code != nil {
 		if bucket, key := fn.Code.S3Bucket, fn.Code.S3Key; bucket != nil && key != nil {

deploy.go

@@ -16,7 +16,7 @@ import (
 // DeployOption represens an option for Deploy()
 type DeployOption struct {
 	FunctionFilePath *string
-	SrcDir           *string
+	Src              *string
 	Excludes         []string
 	ExcludeFile      *string
 	Publish          *bool

export_test.go

@@ -2,5 +2,6 @@ package lambroll
 
 var (
 	CreateZipArchive = createZipArchive
+	LoadZipArchive   = loadZipArchive
 	MergeTags        = mergeTags
 )