sgcommand
aa7d85822c
- config: load/save/add unit, Unit struct - runtime: podman + docker discovery and exists check - cmd: syncup (discover + reconcile), edit, cobra root - PLAN.md: full project plan
86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
package config
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import (
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"fmt"
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"os"
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"path/filepath"
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"gopkg.in/yaml.v3"
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)
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const DefaultConfigPath = "/etc/unitdore/units.yaml"
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// Unit represents a single managed container unit.
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type Unit struct {
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Name string `yaml:"name"`
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Runtime string `yaml:"runtime"` // podman | docker | exec
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User string `yaml:"user,omitempty"` // empty = root/system unit
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Command string `yaml:"command,omitempty"` // override ExecStart
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Order int `yaml:"order"`
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Delay string `yaml:"delay,omitempty"` // e.g. "5s"
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Enabled bool `yaml:"enabled"`
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DisabledReason string `yaml:"disabled_reason,omitempty"`
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}
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// Config is the root config structure.
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type Config struct {
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Units []Unit `yaml:"units"`
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}
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// Load reads and parses the config file at path.
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func Load(path string) (*Config, error) {
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data, err := os.ReadFile(path)
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if err != nil {
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return nil, fmt.Errorf("reading config: %w", err)
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}
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var cfg Config
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if err := yaml.Unmarshal(data, &cfg); err != nil {
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return nil, fmt.Errorf("parsing config: %w", err)
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}
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return &cfg, nil
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}
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// LoadOrEmpty loads the config file, or returns an empty config if it doesn't exist.
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func LoadOrEmpty(path string) (*Config, error) {
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_, err := os.Stat(path)
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if os.IsNotExist(err) {
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return &Config{}, nil
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}
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return Load(path)
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}
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// Save writes the config back to disk, creating parent directories if needed.
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func (c *Config) Save(path string) error {
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if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
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return fmt.Errorf("creating config dir: %w", err)
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}
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data, err := yaml.Marshal(c)
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if err != nil {
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return fmt.Errorf("marshalling config: %w", err)
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}
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if err := os.WriteFile(path, data, 0644); err != nil {
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return fmt.Errorf("writing config: %w", err)
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}
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return nil
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}
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// FindUnit returns a pointer to the unit with the given name, or nil.
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func (c *Config) FindUnit(name string) *Unit {
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for i := range c.Units {
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if c.Units[i].Name == name {
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return &c.Units[i]
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}
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}
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return nil
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}
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// AddUnit appends a unit if one with that name doesn't already exist.
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// Returns true if it was added.
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func (c *Config) AddUnit(u Unit) bool {
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if c.FindUnit(u.Name) != nil {
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return false
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}
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c.Units = append(c.Units, u)
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return true
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}
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