rolecule: support volume mounts (#13)

Co-authored-by: gurpalw <[email protected]>

README.md

@@ -202,6 +202,8 @@ instances:
   - name: ubuntu-22.04
     image: ubuntu-systemd:22.04
     playbook: ubuntu/playbook.yml
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
   - name: ubuntu-22.04-build
     image: ubuntu-systemd:22.04
     arch: amd64

cmd/create.go

@@ -1,6 +1,8 @@
 package cmd
 
 import (
+	"os"
+
 	"github.com/apex/log"
 	"github.com/spf13/cobra"
 	"github.com/z0mbix/rolecule/pkg/config"
@@ -38,6 +40,7 @@ func create(cfg *config.Config) error {
 		output, err := instance.Create()
 		if err != nil {
 			log.Error(err.Error())
+			os.Exit(1)
 		}
 		log.Debug(output)
 	}

pkg/config/config.go

@@ -59,7 +59,7 @@ func Get() (*Config, error) {
 	log.Debugf("config file: %+v", configValues)
 
 	if configValues.Engine.Name == "" {
-		log.Debugf("enginer not specified, using default engine: %s", defaultEngine)
+		log.Debugf("engine not specified, using default engine: %s", defaultEngine)
 		configValues.Engine.Name = defaultEngine
 	}
 	engine, err := container.NewEngine(configValues.Engine.Name)
@@ -150,6 +150,7 @@ func Get() (*Config, error) {
 			Provisioner: iProvisioner,
 			Verifier:    iVerifier,
 			RoleMounts:  roleMounts,
+			Volumes:     i.Volumes,
 		}
 
 		instances = append(instances, instanceConfig)

pkg/instance/instance.go

@@ -2,7 +2,9 @@ package instance
 
 import (
 	"fmt"
+	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/apex/log"
 	"github.com/z0mbix/rolecule/pkg/container"
@@ -15,6 +17,7 @@ type Instances []Instance
 type Config struct {
 	Name     string   `mapstructure:"name"`
 	Image    string   `mapstructure:"image"`
+	Volumes  []string `mapstructure:"volumes"`
 	Arch     string   `mapstructure:"arch"`
 	Args     []string `mapstructure:"args"`
 	Playbook string   `mapstructure:"playbook"`
@@ -36,6 +39,7 @@ type Instance struct {
 	RoleName   string
 	RoleDir    string
 	RoleMounts map[string]string
+	Volumes    []string
 	container.Engine
 	Provisioner provisioner.Provisioner
 	Verifier    verifier.Verifier
@@ -62,6 +66,26 @@ func (i *Instance) Create() (string, error) {
 		instanceArgs = append(instanceArgs, "--volume", fmt.Sprintf("%s:%s", src, dst))
 	}
 
+	for _, volume := range i.Volumes {
+		volume = strings.TrimSpace(volume)
+		parts := strings.SplitN(volume, ":", 2)
+
+		if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
+			return "", fmt.Errorf("invalid volume format, expected 'hostPath:containerPath', got: %s", volume)
+		}
+
+		_, err := os.Stat(parts[0])
+		if err != nil {
+			if os.IsNotExist(err) {
+				return "", fmt.Errorf("host path does not exist: %s", parts[0])
+			}
+			return "", fmt.Errorf("error accessing path: %s, error: %w", parts[0], err)
+		}
+
+		log.Debugf("mounting volume: %s -> %s", parts[0], parts[1])
+		instanceArgs = append(instanceArgs, "--volume", fmt.Sprintf("%s:%s", parts[0], parts[1]))
+	}
+
 	if i.Arch != "" {
 		instanceArgs = append(instanceArgs, "--platform", fmt.Sprintf("linux/%s", i.Arch))
 	}