Merge branch 'master' of git.andrewnw.xyz:CyberShell/systemUtilities-go

backup.go

@@ -13,47 +13,75 @@ import (
 
 	"git.andrewnw.xyz/CyberShell/backy/pkg/backy"
 	"github.com/kevinburke/ssh_config"
+	"github.com/spf13/viper"
 	"golang.org/x/crypto/ssh"
 )
 
+// const logFile = "backy.log"
+
 type backupCommand struct {
 
 	// command to run
-	cmd string
+	Cmd string
 
 	// host on which to run cmd
-	host string
+	Host string
 
 	// Shell specifies which shell to run the command in, if any
 	// Not applicable when host is not local
-	shell string
-	// path to the command
-
-	path string
+	Shell string
 
 	// cmdArgs is an array that holds the arguments to cmd
-	cmdArgs []string
+	CmdArgs []string
 }
 
-var remoteHost *backy.Host
+//	type config struct {
+//		Commands struct {
+//			backupCommand `mapstructure:",squash"`
+//		}
+//	}
+var testCmd = &backupCommand{
+	Cmd:     "hostname",
+	Shell:   "bash",
+	CmdArgs: []string{},
+}
+
+var remoteHost backy.Host
 
 func main() {
 
+	var test = true
+
+	if test {
+
+		readConfigFile()
+
+	} else {
+
+		remoteHost.User = "root"
+		testCmd.runCmd()
+		// shutdownEmailSvr.runCmd()
+		// backupEmailSvrRestic.runCmd()
+		// backupEmailSvrRsync.runCmd()
+		// startEmailSvr.runCmd()
+
+	}
 }
 
 func (command *backupCommand) runCmd() {
 
 	var cmdArgsStr string
-	for _, v := range command.cmdArgs {
+	for _, v := range command.CmdArgs {
 		cmdArgsStr += fmt.Sprintf(" %s", v)
 	}
-	fmt.Printf("\n\nRunning command: " + command.cmd + " " + cmdArgsStr + " on host " + command.host + "...\n\n")
-	if command.host != "local" {
+
+	fmt.Printf("\n\nRunning command: " + command.Cmd + " " + cmdArgsStr + " on host " + command.Host + "...\n\n")
+	if command.Host != "local" {
 
 		remoteHost.Port = 22
-		remoteHost.Host = command.host
+		remoteHost.Host = command.Host
 
-		sshc, err := connectToSSHHost(remoteHost)
+		sshc, err := connectToSSHHost(&remoteHost)
 		if err != nil {
 			panic(fmt.Errorf("ssh dial: %w", err))
 		}
@@ -64,8 +92,8 @@ func (command *backupCommand) runCmd() {
 		}
 		defer s.Close()
 
-		cmd := command.cmd
-		for _, a := range command.cmdArgs {
+		cmd := command.Cmd
+		for _, a := range command.CmdArgs {
 			cmd += " " + a
 		}
 
@@ -76,31 +104,31 @@ func (command *backupCommand) runCmd() {
 		if err != nil {
 			panic(fmt.Errorf("error when running cmd " + cmd + "\n Error: " + err.Error()))
 		}
-		// fmt.Printf("Output: %s\n", string(output))
 	} else {
 		// shell := "/bin/bash"
 		var err error
-		if command.shell != "" {
-			cmdArgsStr = fmt.Sprintf("%s %s", command.cmd, cmdArgsStr)
-			localCMD := exec.Command(command.shell, "-c", cmdArgsStr)
+		if command.Shell != "" {
+			cmdArgsStr = fmt.Sprintf("%s %s", command.Cmd, cmdArgsStr)
+			localCMD := exec.Command(command.Shell, "-c", cmdArgsStr)
 
 			var stdoutBuf, stderrBuf bytes.Buffer
 			localCMD.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
 			localCMD.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
 			err = localCMD.Run()
 			if err != nil {
-				panic(fmt.Errorf("error when running cmd: %s: %w", command.cmd, err))
+				panic(fmt.Errorf("error when running cmd: %s: %w", command.Cmd, err))
 			}
+			return
 		}
-		// localCMD := exec.Command(command.cmd, command.args...)
+		localCMD := exec.Command(command.Cmd, command.CmdArgs...)
 
-		// var stdoutBuf, stderrBuf bytes.Buffer
-		// localCMD.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
-		// localCMD.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
-		// err = localCMD.Run()
+		var stdoutBuf, stderrBuf bytes.Buffer
+		localCMD.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
+		localCMD.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
+		err = localCMD.Run()
 
 		if err != nil {
-			panic(fmt.Errorf("error when running cmd: %s: %w", command.cmd, err))
+			panic(fmt.Errorf("error when running cmd: %s: %w", command.Cmd, err))
 		}
 		// fmt.Printf("%s\n", string(output))
 	}
@@ -147,7 +175,7 @@ func connectToSSHHost(remoteConfig *backy.Host) (*ssh.Client, error) {
 				panic(fmt.Errorf("parse private key: %w", err))
 			}
 			sshConfig := &ssh.ClientConfig{
-				User:            "root",
+				User:            remoteHost.User,
 				Auth:            []ssh.AuthMethod{ssh.PublicKeys(signer)},
 				HostKeyCallback: ssh.InsecureIgnoreHostKey(),
 			}
@@ -158,3 +186,91 @@ func connectToSSHHost(remoteConfig *backy.Host) (*ssh.Client, error) {
 	}
 	return sshc, connectErr
 }
+
+func readConfigFile() {
+	viper.SetConfigName("backy")               // name of config file (without extension)
+	viper.SetConfigType("yaml")                // REQUIRED if the config file does not have the extension in the name
+	viper.AddConfigPath("$HOME/.config/backy") // call multiple times to add many search paths
+	viper.AddConfigPath(".")                   // optionally look for config in the working directory
+	err := viper.ReadInConfig()                // Find and read the config file
+	if err != nil {                            // Handle errors reading the config file
+		panic(fmt.Errorf("fatal error config file: %w", err))
+	}
+	// if err := viper.ReadInConfig(); err != nil {
+	// 	if _, ok := err.(viper.ConfigFileNotFoundError); ok {
+	// 		// Config file not found; ignore error if desired
+	// 	} else {
+	// 		// Config file was found but another error was produced
+	// 	}
+	// }
+
+	// Config file found and successfully parsed
+
+	// viper.WriteConfig() // writes current config to predefined path set by 'viper.AddConfigPath()' and 'viper.SetConfigName'
+
+	// err = viper.Unmarshal(&C)
+	// if err != nil {
+	// 	panic(fmt.Errorf("unable to decode into struct, %v", err))
+	// }
+	commandsMap := viper.GetStringMapString("commands")
+	var cmdNames []string
+	for k := range commandsMap {
+		cmdNames = append(cmdNames, k)
+	}
+	var cmdStructs []backupCommand
+	for _, cmdName := range cmdNames {
+		var backupCmdStruct backupCommand
+		println(cmdName)
+		subCmd := viper.Sub(getNestedConfig("commands", cmdName))
+
+		hostSet := subCmd.IsSet("host")
+		host := subCmd.GetString("host")
+
+		cmdSet := subCmd.IsSet("cmd")
+		cmd := subCmd.GetString("cmd")
+		cmdArgsSet := subCmd.IsSet("cmdargs")
+		cmdArgs := subCmd.GetStringSlice("cmdargs")
+
+		if hostSet {
+			println("Host:")
+			println(host)
+			backupCmdStruct.Host = host
+		} else {
+			println("Host is not set")
+		}
+		if cmdSet {
+			println("Cmd:")
+			println(cmd)
+			backupCmdStruct.Cmd = cmd
+		} else {
+			println("Cmd is not set")
+		}
+		if cmdArgsSet {
+			println("CmdArgs:")
+			for _, arg := range cmdArgs {
+				println(arg)
+			}
+			backupCmdStruct.CmdArgs = cmdArgs
+		} else {
+			println("CmdArgs is not set")
+		}
+		cmdStructs = append(cmdStructs, backupCmdStruct)
+		for _, cmd := range cmdStructs {
+			fmt.Printf("Cmd is %s\n", cmd.Cmd)
+			fmt.Printf("Host is %s\n", cmd.Host)
+		}
+	}
+	cmdOrder := viper.GetStringMapStringSlice("cmd-order")
+	for cmd, orderSlice := range cmdOrder {
+		println("Cmd name: ", cmd)
+		println("Cmd order: ")
+		for _, v := range orderSlice {
+			println(v)
+
+		}
+	}
+}
+
+func getNestedConfig(nestedConfig, key string) string {
+	return fmt.Sprintf("%s.%s", nestedConfig, key)
+}