阶段性提交

internal/installers/installer_base.go

@@ -0,0 +1,168 @@
+package installers
+
+import (
+	"errors"
+	"github.com/iwind/TeaGo/Tea"
+	stringutil "github.com/iwind/TeaGo/utils/string"
+	"golang.org/x/crypto/ssh"
+	"net"
+	"path/filepath"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type BaseInstaller struct {
+	client *SSHClient
+}
+
+// 登录SSH服务
+func (this *BaseInstaller) Login(credentials *Credentials) error {
+	var hostKeyCallback ssh.HostKeyCallback = nil
+
+	// 检查参数
+	if len(credentials.Host) == 0 {
+		return errors.New("'host' should not be empty")
+	}
+	if credentials.Port <= 0 {
+		return errors.New("'port' should be greater than 0")
+	}
+	if len(credentials.Password) == 0 && len(credentials.PrivateKey) == 0 {
+		return errors.New("require user 'password' or 'privateKey'")
+	}
+
+	// 不使用known_hosts
+	if hostKeyCallback == nil {
+		hostKeyCallback = func(hostname string, remote net.Addr, key ssh.PublicKey) error {
+			return nil
+		}
+	}
+
+	// 认证
+	methods := []ssh.AuthMethod{}
+	if len(credentials.Password) > 0 {
+		{
+			authMethod := ssh.Password(credentials.Password)
+			methods = append(methods, authMethod)
+		}
+
+		{
+			authMethod := ssh.KeyboardInteractive(func(user, instruction string, questions []string, echos []bool) (answers []string, err error) {
+				if len(questions) == 0 {
+					return []string{}, nil
+				}
+				return []string{credentials.Password}, nil
+			})
+			methods = append(methods, authMethod)
+		}
+	} else {
+		signer, err := ssh.ParsePrivateKey([]byte(credentials.PrivateKey))
+		if err != nil {
+			return errors.New("parse private key: " + err.Error())
+		}
+		authMethod := ssh.PublicKeys(signer)
+		methods = append(methods, authMethod)
+	}
+
+	// SSH客户端
+	config := &ssh.ClientConfig{
+		User:            credentials.Username,
+		Auth:            methods,
+		HostKeyCallback: hostKeyCallback,
+		Timeout:         5 * time.Second, // TODO 后期可以设置这个超时时间
+	}
+
+	sshClient, err := ssh.Dial("tcp", credentials.Host+":"+strconv.Itoa(credentials.Port), config)
+	if err != nil {
+		return err
+	}
+	client, err := NewSSHClient(sshClient)
+	if err != nil {
+		return err
+	}
+	this.client = client
+	return nil
+}
+
+// 关闭SSH服务
+func (this *BaseInstaller) Close() error {
+	if this.client != nil {
+		return this.client.Close()
+	}
+
+	return nil
+}
+
+// 查找最新的版本的文件
+func (this *BaseInstaller) LookupLatestInstaller(filePrefix string) (string, error) {
+	matches, err := filepath.Glob(Tea.Root + Tea.DS + "deploy" + Tea.DS + "*.zip")
+	if err != nil {
+		return "", err
+	}
+
+	pattern, err := regexp.Compile(filePrefix + `-v([\d.]+)\.zip`)
+	if err != nil {
+		return "", err
+	}
+
+	lastVersion := ""
+	result := ""
+	for _, match := range matches {
+		baseName := filepath.Base(match)
+		if !pattern.MatchString(baseName) {
+			continue
+		}
+		m := pattern.FindStringSubmatch(baseName)
+		if len(m) < 2 {
+			continue
+		}
+		version := m[1]
+		if len(lastVersion) == 0 || stringutil.VersionCompare(version, lastVersion) > 0 {
+			lastVersion = version
+			result = match
+		}
+	}
+	return result, nil
+}
+
+// 上传安装助手
+func (this *BaseInstaller) InstallHelper(targetDir string) (env *Env, err error) {
+	uname, _, err := this.client.Exec("uname -a")
+	if err != nil {
+		return env, err
+	}
+
+	osName := ""
+	archName := ""
+	if strings.Index(uname, "Darwin") > 0 {
+		osName = "darwin"
+	} else if strings.Index(uname, "Linux") >= 0 {
+		osName = "linux"
+	} else {
+		// TODO 支持freebsd, aix ...
+		return env, errors.New("installer not supported os '" + uname + "'")
+	}
+
+	if strings.Index(uname, "x86_64") > 0 {
+		archName = "amd64"
+	} else {
+		// TODO 支持ARM和MIPS等架构
+		archName = "386"
+	}
+
+	exeName := "installer-helper-" + osName + "-" + archName
+	exePath := Tea.Root + "/installers/" + exeName
+
+	err = this.client.Copy(exePath, targetDir+"/"+exeName, 0777)
+	if err != nil {
+		return env, err
+	}
+
+	env = &Env{
+		OS:         osName,
+		Arch:       archName,
+		HelperName: exeName,
+	}
+	return env, nil
+}