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plugin.go
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plugin.go
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package plugin
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/zjz894251se/go-zero/tools/goctl/api/parser"
"github.com/zjz894251se/go-zero/tools/goctl/api/spec"
"github.com/zjz894251se/go-zero/tools/goctl/rpc/execx"
"github.com/zjz894251se/go-zero/tools/goctl/util"
"github.com/urfave/cli"
)
const pluginArg = "_plugin"
type Plugin struct {
Api *spec.ApiSpec
ApiFilePath string
Style string
Dir string
}
func PluginCommand(c *cli.Context) error {
ex, err := os.Executable()
if err != nil {
panic(err)
}
var plugin = c.String("plugin")
if len(plugin) == 0 {
return errors.New("missing plugin")
}
transferData, err := prepareArgs(c)
if err != nil {
return err
}
bin, args := getPluginAndArgs(plugin)
bin, download, err := getCommand(bin)
if err != nil {
return err
}
if download {
defer func() {
_ = os.Remove(bin)
}()
}
content, err := execx.Run(bin+" "+args, filepath.Dir(ex), bytes.NewBuffer(transferData))
if err != nil {
return err
}
fmt.Println(content)
return nil
}
func prepareArgs(c *cli.Context) ([]byte, error) {
apiPath := c.String("api")
var transferData Plugin
if len(apiPath) > 0 && util.FileExists(apiPath) {
api, err := parser.Parse(apiPath)
if err != nil {
return nil, err
}
transferData.Api = api
}
absApiFilePath, err := filepath.Abs(apiPath)
if err != nil {
return nil, err
}
transferData.ApiFilePath = absApiFilePath
dirAbs, err := filepath.Abs(c.String("dir"))
if err != nil {
return nil, err
}
transferData.Dir = dirAbs
transferData.Style = c.String("style")
data, err := json.Marshal(transferData)
if err != nil {
return nil, err
}
return data, nil
}
func getCommand(arg string) (string, bool, error) {
p, err := exec.LookPath(arg)
if err == nil {
abs, err := filepath.Abs(p)
if err != nil {
return "", false, err
}
return abs, false, nil
}
var defaultErr = errors.New("invalid plugin value " + arg)
if strings.HasPrefix(arg, "http") {
items := strings.Split(arg, "/")
if len(items) == 0 {
return "", false, defaultErr
}
filename, err := filepath.Abs(pluginArg + items[len(items)-1])
if err != nil {
return "", false, err
}
err = downloadFile(filename, arg)
if err != nil {
return "", false, err
}
os.Chmod(filename, os.ModePerm)
return filename, true, nil
}
return arg, false, nil
}
func downloadFile(filepath string, url string) error {
resp, err := http.Get(url)
if err != nil {
return err
}
defer func() {
_ = resp.Body.Close()
}()
out, err := os.Create(filepath)
if err != nil {
return err
}
defer func() {
_ = out.Close()
}()
_, err = io.Copy(out, resp.Body)
return err
}
func NewPlugin() (*Plugin, error) {
var plugin Plugin
content, err := ioutil.ReadAll(os.Stdin)
if err != nil {
return nil, err
}
err = json.Unmarshal(content, &plugin)
if err != nil {
return nil, err
}
return &plugin, nil
}
func getPluginAndArgs(arg string) (string, string) {
i := strings.Index(arg, "=")
if i <= 0 {
return arg, ""
}
return trimQuote(arg[:i]), trimQuote(arg[i+1:])
}
func trimQuote(in string) string {
in = strings.Trim(in, `"`)
in = strings.Trim(in, `'`)
in = strings.Trim(in, "`")
return in
}