150 lines
3.2 KiB
Go
150 lines
3.2 KiB
Go
package node
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import (
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"bytes"
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"encoding/gob"
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"os"
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"github.com/pkg/errors"
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"gopkg.in/yaml.v3"
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"github.com/warewulf/warewulf/internal/pkg/wwlog"
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)
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/*
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Add a node with the given ID and return a pointer to it
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*/
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func (config *NodesYaml) AddNode(nodeID string) (*Node, error) {
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newNode := NewNode(nodeID)
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wwlog.Verbose("Adding new node: %s", nodeID)
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if _, ok := config.Nodes[nodeID]; ok {
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return nil, errors.New("nodename already exists: " + nodeID)
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} else {
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config.Nodes[nodeID] = &newNode
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}
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return &newNode, nil
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}
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/*
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delete node with the given id
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*/
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func (config *NodesYaml) DelNode(nodeID string) error {
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if _, ok := config.Nodes[nodeID]; !ok {
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return errors.New("nodename does not exist: " + nodeID)
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}
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wwlog.Verbose("Deleting node: %s", nodeID)
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delete(config.Nodes, nodeID)
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return nil
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}
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/*
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set node for the node with id the values of vals
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*/
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func (config *NodesYaml) SetNode(nodeID string, vals Node) error {
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node, ok := config.Nodes[nodeID]
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if !ok {
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return ErrNotFound
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}
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var buf bytes.Buffer
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enc := gob.NewEncoder(&buf)
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dec := gob.NewDecoder(&buf)
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err := enc.Encode(vals)
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if err != nil {
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return err
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}
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err = dec.Decode(node)
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return err
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}
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/*
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set profile for the node with id the values of vals
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*/
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func (config *NodesYaml) SetProfile(profileId string, vals Profile) error {
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profile, ok := config.NodeProfiles[profileId]
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if !ok {
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return ErrNotFound
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}
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var buf bytes.Buffer
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enc := gob.NewEncoder(&buf)
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dec := gob.NewDecoder(&buf)
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err := enc.Encode(vals)
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if err != nil {
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return err
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}
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err = dec.Decode(profile)
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return err
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}
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/*
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Add a node with the given ID and return a pointer to it
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*/
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func (config *NodesYaml) AddProfile(profileId string) (*Profile, error) {
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profile := EmptyProfile()
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wwlog.Verbose("adding new profile: %s", profileId)
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if _, ok := config.NodeProfiles[profileId]; ok {
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return nil, errors.New("profile already exists: " + profileId)
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} else {
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config.NodeProfiles[profileId] = &profile
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}
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return &profile, nil
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}
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/*
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delete node with the given id
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*/
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func (config *NodesYaml) DelProfile(nodeID string) error {
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if _, ok := config.Nodes[nodeID]; !ok {
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return errors.New("profile does not exist: " + nodeID)
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}
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wwlog.Verbose("deleting profile: %s", nodeID)
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delete(config.Nodes, nodeID)
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return nil
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}
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/*
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Write the the NodeYaml to disk.
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*/
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func (config *NodesYaml) Persist() error {
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out, dumpErr := config.Dump()
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if dumpErr != nil {
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wwlog.Error("%s", dumpErr)
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return dumpErr
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}
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file, err := os.OpenFile(ConfigFile, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0o644)
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if err != nil {
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wwlog.Error("%s", err)
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return err
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}
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defer file.Close()
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_, err = file.WriteString(string(out))
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if err != nil {
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return err
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}
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wwlog.Debug("persisted: %s", ConfigFile)
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return nil
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}
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/*
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Dump returns a YAML document representing the nodeDb
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instance. Passes through any errors generated by yaml.Marshal.
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*/
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func (config *NodesYaml) Dump() ([]byte, error) {
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// flatten out profiles and nodes
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for _, val := range config.NodeProfiles {
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val.Flatten()
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}
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for _, val := range config.Nodes {
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val.Flatten()
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}
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var buf bytes.Buffer
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// Run through encoder
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yamlEncoder := yaml.NewEncoder(&buf)
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yamlEncoder.SetIndent(2)
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err := yamlEncoder.Encode(config)
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return buf.Bytes(), err //yaml.Marshal(config)
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}
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