init machined cli

internal/machine/daemon/config.go

@@ -0,0 +1,45 @@
+package daemon
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+const (
+	DefaultDataDir    = "/var/lib/uncloud"
+	MachineConfigPath = "machine.json"
+)
+
+type Config struct {
+	UncloudID     string
+	UncloudSecret string
+	// IPv4 network in CIDR format to use for the machine network.
+	Network string
+}
+
+func ReadConfig(path string) (Config, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return Config{}, fmt.Errorf("read config file %q: %w", path, err)
+	}
+	var config Config
+	if err = json.Unmarshal(data, &config); err != nil {
+		return Config{}, fmt.Errorf("parse config file %q: %w", path, err)
+	}
+	return config, nil
+}
+
+func (c *Config) Write(path string) error {
+	dir, _ := filepath.Split(path)
+	if err := os.MkdirAll(dir, 0700); err != nil {
+		return fmt.Errorf("create config directory %q: %w", dir, err)
+	}
+
+	data, err := json.Marshal(c)
+	if err != nil {
+		return fmt.Errorf("marshal config: %w", err)
+	}
+	return os.WriteFile(path, data, 0600)
+}

internal/machine/daemon/run.go

@@ -0,0 +1,17 @@
+package daemon
+
+import (
+	"errors"
+	"fmt"
+	"path/filepath"
+)
+
+func Run(dataDir string) error {
+	cfg, err := ReadConfig(filepath.Join(dataDir, MachineConfigPath))
+	if err != nil {
+		return err
+	}
+	fmt.Println("Config", cfg)
+
+	return errors.New("Running daemon...")
+}