Merge pull request #8 from aliyun/support-build-zip-cmd

support build zip cmd

README.md

@@ -51,6 +51,21 @@ GOOS=linux GOARCH=amd64 go build main.go
 GOOS=linux go build main
 ```
 
+#### 2. 在 Windows 下
+
+1. 下载 build-fc-zip 工具
+```bash
+go.exe get -u github.com/aliyun/fc-runtime-go-sdk/cmd/build-fc-zip
+```
+
+2. 使用 `build-fc-zip` 工具创建 `.zip` 文件。如果你默认安装了 Go，工具默认会在 `%USERPROFILE%\Go\bin.`
+
+```bash
+set GOOS=linux
+go build -o main main.go
+%USERPROFILE%\Go\bin\build-fc-zip.exe -output main.zip main
+```
+
 ## 函数入口
 Golang 是编译型语言，需要在本地编译后直接上传可执行的二进制文件，在函数入口配置中，不同于 Python，NodeJS的 `[文件名].[函数名]` 格式，Golang 语言的函数入口可直接设置为 `[文件名]`。
 该文件名是只编译后的二进制文件名称，当函数被调用时，函数计算平台会直接执行函数入口配置的文件名。

cmd/build-fc-zip/main.go

@@ -0,0 +1,121 @@
+// Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved
+// Copyright 2021 Alibaba Group Holding Limited. All Rights Reserved.
+
+package main
+
+import (
+	"archive/zip"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/urfave/cli/v2"
+)
+
+func main() {
+	app := &cli.App{
+		Name:  "build-fc-zip",
+		Usage: "Put an executable and supplemental files into a zip file that works with Aliyun FunctionCompute.",
+		Flags: []cli.Flag{
+			&cli.StringFlag{
+				Name:    "output",
+				Aliases: []string{"o"},
+				Value:   "",
+				Usage:   "output file path for the zip. Defaults to the first input file name.",
+			},
+		},
+		Action: func(c *cli.Context) error {
+			if !c.Args().Present() {
+				return errors.New("no input provided")
+			}
+
+			inputExe := c.Args().First()
+			outputZip := c.String("output")
+			if outputZip == "" {
+				outputZip = fmt.Sprintf("%s.zip", filepath.Base(inputExe))
+			}
+
+			if err := compressExeAndArgs(outputZip, inputExe, c.Args().Tail()); err != nil {
+				return fmt.Errorf("failed to compress file: %v", err)
+			}
+			log.Print("wrote " + outputZip)
+			return nil
+		},
+	}
+
+	if err := app.Run(os.Args); err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}
+
+func writeExe(writer *zip.Writer, pathInZip string, data []byte) error {
+	if pathInZip != "bootstrap" {
+		header := &zip.FileHeader{Name: "bootstrap", Method: zip.Deflate}
+		header.SetMode(0755 | os.ModeSymlink)
+		link, err := writer.CreateHeader(header)
+		if err != nil {
+			return err
+		}
+		if _, err := link.Write([]byte(pathInZip)); err != nil {
+			return err
+		}
+	}
+
+	exe, err := writer.CreateHeader(&zip.FileHeader{
+		CreatorVersion: 3 << 8,     // indicates Unix
+		ExternalAttrs:  0777 << 16, // -rwxrwxrwx file permissions
+		Name:           pathInZip,
+		Method:         zip.Deflate,
+	})
+	if err != nil {
+		return err
+	}
+
+	_, err = exe.Write(data)
+	return err
+}
+
+func compressExeAndArgs(outZipPath string, exePath string, args []string) error {
+	zipFile, err := os.Create(outZipPath)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		closeErr := zipFile.Close()
+		if closeErr != nil {
+			fmt.Fprintf(os.Stderr, "Failed to close zip file: %v\n", closeErr)
+		}
+	}()
+
+	zipWriter := zip.NewWriter(zipFile)
+	defer zipWriter.Close()
+	data, err := ioutil.ReadFile(exePath)
+	if err != nil {
+		return err
+	}
+
+	err = writeExe(zipWriter, filepath.Base(exePath), data)
+	if err != nil {
+		return err
+	}
+
+	for _, arg := range args {
+		writer, err := zipWriter.Create(arg)
+		if err != nil {
+			return err
+		}
+		data, err := ioutil.ReadFile(arg)
+		if err != nil {
+			return err
+		}
+		_, err = writer.Write(data)
+		if err != nil {
+			return err
+		}
+	}
+	return err
+}

go.mod

@@ -3,7 +3,11 @@ module github.com/aliyun/fc-runtime-go-sdk
 go 1.16
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/stretchr/testify v1.7.0
+	github.com/HdrHistogram/hdrhistogram-go v1.1.2 // indirect
+	github.com/opentracing/opentracing-go v1.2.0
+	github.com/uber/jaeger-client-go v2.30.0+incompatible
+	github.com/uber/jaeger-lib v2.4.1+incompatible // indirect
+	github.com/urfave/cli/v2 v2.3.0
+	go.uber.org/atomic v1.9.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 // indirect
 )

go.sum

@@ -1,13 +1,78 @@
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