Support nginx conf

cmd/client/commandv2/convert.go

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2017, MegaEase
+ * All rights reserved.
+ *
+ * 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:https://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 commandv2
+
+import (
+ "github.com/spf13/cobra"
+
+ "github.com/megaease/easegress/v2/cmd/client/commandv2/convert/nginx"
+)
+
+// ConvertCmd returns convert command.
+func ConvertCmd() *cobra.Command {
+ cmd := &cobra.Command{
+ Use: "convert",
+ Short: "Convert other kinds of config to Easegress yaml file",
+ }
+ cmd.AddCommand(nginx.Cmd())
+ return cmd
+}

cmd/client/commandv2/convert/nginx/cmd.go

@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2017, MegaEase
+ * All rights reserved.
+ *
+ * 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:https://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 nginx
+
+import (
+ "fmt"
+ "math/rand"
+ "os"
+ "path/filepath"
+
+ "github.com/megaease/easegress/v2/cmd/client/commandv2/specs"
+ "github.com/megaease/easegress/v2/cmd/client/general"
+ "github.com/megaease/easegress/v2/pkg/util/codectool"
+ crossplane "github.com/nginxinc/nginx-go-crossplane"
+ "github.com/spf13/cobra"
+)
+
+// Options contains the options for convert nginx.conf.
+type Options struct {
+ NginxConf string
+ Output string
+ ResourcePrefix string
+ usedNames map[string]struct{}
+}
+
+// Cmd returns convert nginx.conf command.
+func Cmd() *cobra.Command {
+ flags := &Options{}
+ flags.init()
+ examples := []general.Example{
+ {
+ Desc: "Convert nginx config to easegress yamls",
+ Command: "egctl convert nginx -f <nginx.conf> -o <output.yaml> --resource-prefix <prefix>",
+ },
+ }
+ cmd := &cobra.Command{
+ Use: "nginx",
+ Short: "Convert nginx.conf to easegress yaml file",
+ Example: general.CreateMultiExample(examples),
+ Args: func(cmd *cobra.Command, args []string) error {
+ if flags.NginxConf == "" {
+ return fmt.Errorf("nginx.conf file path is required")
+ }
+ if flags.Output == "" {
+ return fmt.Errorf("output yaml file path is required")
+ }
+ if flags.ResourcePrefix == "" {
+ return fmt.Errorf("prefix is required")
+ }
+ return nil
+ },
+ Run: func(cmd *cobra.Command, args []string) {
+ payload, err := crossplane.Parse(flags.NginxConf, &crossplane.ParseOptions{})
+ if err != nil {
+ general.ExitWithErrorf("parse nginx.conf failed: %v", err)
+ }
+ for _, e := range payload.Errors {
+ general.Warnf("parse nginx.conf error: %v in %s of %s", e.Error, e.Line, e.File)
+ }
+ config, err := parsePayload(payload)
+ if err != nil {
+ general.ExitWithError(err)
+ }
+ hs, pls, err := convertConfig(flags, config)
+ if err != nil {
+ general.ExitWithError(err)
+ }
+ if err := writeYaml(flags.Output, hs, pls); err != nil {
+ general.ExitWithError(err)
+ }
+ },
+ }
+ cmd.Flags().StringVarP(&flags.NginxConf, "file", "f", "", "nginx.conf file path")
+ cmd.Flags().StringVarP(&flags.Output, "output", "o", "", "output yaml file path")
+ cmd.Flags().StringVar(&flags.ResourcePrefix, "resource-prefix", "nginx", "prefix of output yaml resources")
+ return cmd
+}
+
+func (opt *Options) init() {
+ opt.usedNames = make(map[string]struct{})
+ opt.usedNames[""] = struct{}{}
+}
+
+// GetPipelineName creates a globally unique name for the pipeline based on the path.
+func (opt *Options) GetPipelineName(path string) string {
+ letters := []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+ nameRunes := make([]rune, 0)
+ for _, r := range path {
+ if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') || (r >= '0' && r <= '9') {
+ nameRunes = append(nameRunes, r)
+ }
+ }
+ name := string(nameRunes)
+ if _, ok := opt.usedNames[name]; !ok {
+ opt.usedNames[name] = struct{}{}
+ return fmt.Sprintf("%s-%s", opt.ResourcePrefix, name)
+ }
+ for i := 0; i < 8; i++ {
+ nameRunes = append(nameRunes, letters[rand.Intn(len(letters))])
+ }
+ name = string(nameRunes)
+ if _, ok := opt.usedNames[name]; !ok {
+ opt.usedNames[name] = struct{}{}
+ return fmt.Sprintf("%s-%s", opt.ResourcePrefix, name)
+ }
+ return opt.GetPipelineName(path)
+}
+
+func writeYaml(filename string, servers []*specs.HTTPServerSpec, pipelines []*specs.PipelineSpec) error {
+ absPath, err := filepath.Abs(filename)
+ if err != nil {
+ return err
+ }
+ file, err := os.Create(absPath)
+ if err != nil {
+ return err
+ }
+ defer file.Close()
+
+ for _, s := range servers {
+ data, err := codectool.MarshalYAML(s)
+ if err != nil {
+ return err
+ }
+ file.WriteString(string(data))
+ file.WriteString("\n---\n")
+ }
+ for _, p := range pipelines {
+ data, err := codectool.MarshalYAML(p)
+ if err != nil {
+ return err
+ }
+ file.WriteString(string(data))
+ file.WriteString("\n---\n")
+ }
+ file.Sync()
+ return nil
+}

cmd/client/commandv2/convert/nginx/cmd_test.go

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2017, MegaEase
+ * All rights reserved.
+ *
+ * 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:https://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 nginx
+
+import (
+ "io"
+ "os"
+ "testing"
+
+ "github.com/stretchr/testify/assert"
+)
+
+func TestCmd(t *testing.T) {
+ cmd := Cmd()
+ assert.NotNil(t, cmd)
+ cmd.ParseFlags([]string{""})
+ assert.NotNil(t, cmd.Args(cmd, []string{}))
+
+ cmd.ParseFlags([]string{"-f", "test.conf"})
+ assert.NotNil(t, cmd.Args(cmd, []string{}))
+
+ cmd.ParseFlags([]string{"-o", "test.yaml"})
+ assert.Nil(t, cmd.Args(cmd, []string{}))
+
+ cmd.ParseFlags([]string{"--resource-prefix", "test"})
+ assert.Nil(t, cmd.Args(cmd, []string{}))
+
+ tempDir := newTempTestDir(t)
+ defer tempDir.Clean()
+
+ nginxConf := `
+ events {}
+ http {
+ server {
+ listen 127.0.0.1:8080;
+
+ location = /user {
+ proxy_pass http:https://localhost:9999;
+ }
+ }
+ }
+ `
+ nginxFile := tempDir.Create("nginx.conf", []byte(nginxConf))
+ outputFile := tempDir.Create("test.yaml", []byte(""))
+ cmd.ParseFlags([]string{"-f", nginxFile, "-o", outputFile, "--prefix", "test"})
+ cmd.Run(cmd, []string{})
+ file, err := os.Open(outputFile)
+ assert.Nil(t, err)
+ defer file.Close()
+ data, err := io.ReadAll(file)
+ assert.Nil(t, err)
+ assert.Contains(t, string(data), "test-8080")
+ assert.Contains(t, string(data), "test-user")
+}
+
+func TestOption(t *testing.T) {
+ option := &Options{
+ NginxConf: "test.conf",
+ Output: "test.yaml",
+ ResourcePrefix: "test",
+ }
+ option.init()
+ path := option.GetPipelineName("/user")
+ assert.Equal(t, "test-user", path)
+ path = option.GetPipelineName("/apis/v1")
+ assert.Equal(t, "test-apisv1", path)
+
+ path = option.GetPipelineName("/apis/v1/")
+ assert.Contains(t, path, "test-apisv1")
+ assert.NotEqual(t, "test-apisv1", path)
+}