143 lines
3.4 KiB
Go
143 lines
3.4 KiB
Go
package edit
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import (
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"fmt"
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"io"
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"os"
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"strings"
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"github.com/spf13/cobra"
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"github.com/warewulf/warewulf/internal/pkg/hostlist"
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"github.com/warewulf/warewulf/internal/pkg/node"
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"github.com/warewulf/warewulf/internal/pkg/util"
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"github.com/warewulf/warewulf/internal/pkg/warewulfd"
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"github.com/warewulf/warewulf/internal/pkg/wwlog"
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"gopkg.in/yaml.v3"
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)
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func CobraRunE(cmd *cobra.Command, args []string) error {
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if !node.CanWriteConfig() {
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return fmt.Errorf("can not write to config: exiting")
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}
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editor := os.Getenv("EDITOR")
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if editor == "" {
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editor = "/bin/vi"
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}
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wwlog.Debug("using editor: %s", editor)
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registry, regErr := node.New()
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if regErr != nil {
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return regErr
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}
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if len(args) == 0 {
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for nodeID := range registry.Nodes {
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args = append(args, nodeID)
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}
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} else {
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args = hostlist.Expand(args)
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}
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wwlog.Debug("node list: %v", args)
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tempFile, tempErr := os.CreateTemp(os.TempDir(), "ww4NodeEdit*.yaml")
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if tempErr != nil {
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return fmt.Errorf("could not create temp file: %s", tempErr)
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}
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defer os.Remove(tempFile.Name())
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if !NoHeader {
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yamlTemplate := node.UnmarshalConf(node.Node{}, nil)
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if _, err := tempFile.WriteString("#nodename:\n# " + strings.Join(yamlTemplate, "\n# ") + "\n"); err != nil {
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return err
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}
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}
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origNodes := make(map[string]*node.Node)
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for _, nodeID := range args {
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if n, ok := registry.Nodes[nodeID]; ok {
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origNodes[nodeID] = n
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}
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}
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if origYaml, err := util.EncodeYaml(origNodes); err != nil {
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return err
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} else if _, err := tempFile.Write(origYaml); err != nil {
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return err
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}
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sum1, sumErr := util.HashFile(tempFile)
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if sumErr != nil {
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return sumErr
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}
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wwlog.Debug("original hash: %s", sum1)
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for {
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if err := util.ExecInteractive(editor, tempFile.Name()); err != nil {
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return fmt.Errorf("editor process exited with non-zero code: %w", err)
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}
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sum2, sumErr := util.HashFile(tempFile)
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if sumErr != nil {
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return sumErr
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}
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wwlog.Debug("edited hash: %s", sum2)
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if sum1 != sum2 {
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wwlog.Debug("modified")
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editYaml, err := io.ReadAll(tempFile)
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if err != nil {
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return err
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}
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editNodes := make(map[string]*node.Node)
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if err := yaml.Unmarshal(editYaml, &editNodes); err != nil {
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wwlog.Error("%v\n", err)
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if util.Confirm("Parse error: retry") {
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continue
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} else {
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break
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}
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}
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var added, deleted, updated int
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for nodeID := range origNodes {
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if editNode, ok := editNodes[nodeID]; !ok || editNode == nil {
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wwlog.Verbose("delete node: %s", nodeID)
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delete(registry.Nodes, nodeID)
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deleted += 1
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}
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}
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for nodeID := range editNodes {
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if _, ok := origNodes[nodeID]; !ok {
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wwlog.Verbose("add node: %s", nodeID)
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added += 1
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registry.Nodes[nodeID] = editNodes[nodeID]
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} else if equalYaml, err := util.EqualYaml(origNodes[nodeID], editNodes[nodeID]); err != nil {
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return err
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} else if !equalYaml {
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wwlog.Verbose("update node: %s", nodeID)
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updated += 1
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registry.Nodes[nodeID] = editNodes[nodeID]
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}
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}
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if util.Confirm(fmt.Sprintf("Are you sure you want to add %d, delete %d, and update %d nodes", added, deleted, updated)) {
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if err := registry.Persist(); err != nil {
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return err
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}
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if err := warewulfd.DaemonReload(); err != nil {
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return fmt.Errorf("failed to reload warewulf daemon: %w", err)
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}
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}
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break
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} else {
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wwlog.Verbose("No changes")
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break
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}
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}
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return nil
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}
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