feat:add installation for higress standalone in local docker environment (#606)

Co-authored-by: 澄潭 <zty98751@alibaba-inc.com>

pkg/cmd/hgctl/installer/standalone.go

@@ -0,0 +1,139 @@
+// 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 installer
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/alibaba/higress/pkg/cmd/hgctl/helm"
+	"github.com/alibaba/higress/pkg/cmd/hgctl/util"
+)
+
+const (
+	defaultHttpRequestTimeout = 15 * time.Second
+	defaultHttpMaxTry         = 3
+	defaultHttpBufferSize     = 1024 * 1024 * 2
+)
+
+type StandaloneComponent struct {
+	profile     *helm.Profile
+	started     bool
+	opts        *ComponentOptions
+	writer      io.Writer
+	httpFetcher *util.HTTPFetcher
+	agent       *Agent
+}
+
+func (s *StandaloneComponent) Install() error {
+	if !s.opts.Quiet {
+		fmt.Fprintf(s.writer, "\n🏄 Downloading installer from  %s\n", s.opts.RepoURL)
+	}
+	// download get-higress.sh
+	data, err := s.httpFetcher.Fetch(context.Background(), s.opts.RepoURL)
+	if err != nil {
+		return err
+	}
+	// write installer binary shell
+	if err := util.WriteFileString(s.agent.installBinaryName, string(data), os.ModePerm); err != nil {
+		return err
+	}
+	// start to install higress
+	if err := s.agent.Install(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *StandaloneComponent) UnInstall() error {
+	if err := s.agent.Uninstall(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (s *StandaloneComponent) Upgrade() error {
+	if !s.opts.Quiet {
+		fmt.Fprintf(s.writer, "\n🏄 Downloading installer from  %s\n", s.opts.RepoURL)
+	}
+	// download get-higress.sh
+	data, err := s.httpFetcher.Fetch(context.Background(), s.opts.RepoURL)
+	if err != nil {
+		return err
+	}
+	// write installer binary shell
+	if err := util.WriteFileString(s.agent.installBinaryName, string(data), os.ModePerm); err != nil {
+		return err
+	}
+	// start to upgrade higress
+	if err := s.agent.Upgrade(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func NewStandaloneComponent(profile *helm.Profile, writer io.Writer, opts ...ComponentOption) (*StandaloneComponent, error) {
+	newOpts := &ComponentOptions{}
+	for _, opt := range opts {
+		opt(newOpts)
+	}
+
+	httpFetcher := util.NewHTTPFetcher(defaultHttpRequestTimeout, defaultHttpMaxTry, defaultHttpBufferSize)
+	if err := prepareProfile(profile); err != nil {
+		return nil, err
+	}
+	agent := NewAgent(profile, writer, newOpts.Quiet)
+	standaloneComponent := &StandaloneComponent{
+		profile:     profile,
+		opts:        newOpts,
+		writer:      writer,
+		httpFetcher: httpFetcher,
+		agent:       agent,
+	}
+	return standaloneComponent, nil
+}
+
+func prepareProfile(profile *helm.Profile) error {
+	if _, err := GetProfileInstalledPath(); err != nil {
+		return err
+	}
+
+	if len(profile.InstallPackagePath) == 0 {
+		dir, err := GetDefaultInstallPackagePath()
+		if err != nil {
+			return err
+		}
+		profile.InstallPackagePath = dir
+	}
+
+	if _, err := os.Stat(profile.InstallPackagePath); os.IsNotExist(err) {
+		if err = os.MkdirAll(profile.InstallPackagePath, os.ModePerm); err != nil {
+			return err
+		}
+	}
+
+	// parse INSTALLPACKAGEPATH in storage.url
+	if strings.HasPrefix(profile.Storage.Url, "file://") {
+		profile.Storage.Url = strings.ReplaceAll(profile.Storage.Url, "${INSTALLPACKAGEPATH}", profile.InstallPackagePath)
+	}
+
+	return nil
+}