Record the progress of the OSPP 2023 hgctl project (#453)

pkg/cmd/hgctl/plugin/init/init.go

@@ -0,0 +1,92 @@
+// Copyright (c) 2022 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugininit
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/alibaba/higress/pkg/cmd/hgctl/plugin/option"
+	"github.com/alibaba/higress/pkg/cmd/hgctl/plugin/utils"
+
+	"github.com/AlecAivazis/survey/v2/terminal"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+	cmdutil "k8s.io/kubectl/pkg/cmd/util"
+)
+
+func NewCommand() *cobra.Command {
+	var target string
+
+	initCmd := &cobra.Command{
+		Use:     "init",
+		Aliases: []string{"ini", "i"},
+		Short:   "Initialize a Golang WASM plugin project",
+		Example: `  hgctl plugin init`,
+		Run: func(cmd *cobra.Command, args []string) {
+			cmdutil.CheckErr(runInit(cmd.OutOrStdout(), target))
+		},
+	}
+
+	initCmd.PersistentFlags().StringVarP(&target, "target", "t", "./", "Directory where the project is initialized")
+
+	return initCmd
+}
+
+func runInit(w io.Writer, target string) (err error) {
+	ans := answer{}
+	err = utils.Ask(questions, &ans)
+	if err != nil {
+		if errors.Is(err, terminal.InterruptErr) {
+			fmt.Fprintf(w, "Interrupted\n")
+			return nil
+		}
+		return errors.Wrap(err, "failed to initialize the project")
+	}
+
+	target, err = utils.GetAbsolutePath(target)
+	if err != nil {
+		return errors.Wrap(err, "invalid target directory")
+	}
+	dir := fmt.Sprintf("%s/%s", target, ans.Name)
+	err = os.MkdirAll(dir, 0755)
+	defer func() {
+		if err != nil {
+			os.RemoveAll(dir)
+			err = errors.Wrap(err, "failed to initialize the project")
+
+		}
+	}()
+	if err != nil {
+		return
+	}
+	if err = genGoMain(&ans, dir); err != nil {
+		return errors.Wrap(err, "failed to create main.go")
+	}
+	if err = genGoMod(&ans, dir); err != nil {
+		return errors.Wrap(err, "failed to create go.mod")
+	}
+	if err = genGitIgnore(dir); err != nil {
+		return errors.Wrap(err, "failed to create .gitignore")
+	}
+	if err = option.GenOptionYAML(dir); err != nil {
+		return errors.Wrap(err, "failed to create option.yaml")
+	}
+
+	fmt.Fprintf(w, "Initialized the project in %q\n", dir)
+
+	return nil
+}