fix: remove stale instance entry on recreate and guard stop against missing containers

cmd/start.go

@@ -66,8 +66,8 @@ microcks start --name [name of you container/instance]`,
 				errors.CheckError(err)
 				if !exists {
 					fmt.Printf("Container for instance %s no longer exists, recreating it\n", name)
+					localConfig.RemoveInstance(instance.ContainerID)
 					instance.Status = ""
-					instance.ContainerID = ""
 				}
 			}
 

cmd/stop.go

@@ -40,6 +40,14 @@ func NewStopCommand(globalClientOpts *connectors.ClientOptions) *cobra.Command {
 			errors.CheckError(err)
 			defer containerClient.CloseClient()
 
+			exists, _ := containerClient.ContainerExists(instance.ContainerID)
+			errors.CheckError(err)
+			if !exists {
+				fmt.Printf("Container for instance %s no longer exists\n", instance.Name)
+				fmt.Printf("Run 'microcks start --name %s' to bring the container back\n", instance.Name)
+				return
+			}
+
 			err = containerClient.StopContainer(instance.ContainerID)
 			if err != nil {
 				log.Fatalf("Failed to stop a container: %v", err)

pkg/config/localconfig.go

@@ -321,12 +321,12 @@ func (l *LocalConfig) UpsertInstance(instance Instance) {
 }
 
 // Returns true if server was removed successfully
-func (l *LocalConfig) RemoveInstance(instanceName string) bool {
-	if instanceName == "" {
+func (l *LocalConfig) RemoveInstance(instanceID string) bool {
+	if instanceID == "" {
 		return true
 	}
 	for a, i := range l.Instances {
-		if i.Name == instanceName {
+		if i.ContainerID == instanceID {
 			l.Instances = append(l.Instances[:a], l.Instances[a+1:]...)
 			return true
 		}

pkg/config/localconfig_test.go

@@ -0,0 +1,56 @@
+package config
+
+import (
+	"testing"
+)
+
+func TestRemoveInstance_ByContainerID(t *testing.T) {
+	localConfig := &LocalConfig{
+		Instances: []Instance{
+			{Name: "microcks", ContainerID: "old-id-123", Status: "Running", Port: "8585"},
+			{Name: "staging", ContainerID: "staging-id-456", Status: "Running", Port: "8586"},
+		},
+	}
+
+	removed := localConfig.RemoveInstance("old-id-123")
+
+	if !removed {
+		t.Error("expected RemoveInstance to return true")
+	}
+	// staging should still be there
+	if len(localConfig.Instances) != 1 {
+		t.Errorf("expected 1 instance remaining, got %d", len(localConfig.Instances))
+	}
+	if localConfig.Instances[0].ContainerID != "staging-id-456" {
+		t.Errorf("expected staging instance to remain, got %s", localConfig.Instances[0].ContainerID)
+	}
+}
+
+func TestRemoveInstance_NoDuplicatesAfterRecreate(t *testing.T) {
+	localConfig := &LocalConfig{
+		Instances: []Instance{
+			{Name: "microcks", ContainerID: "old-id-123", Status: "Running", Port: "8585"},
+			{Name: "staging", ContainerID: "staging-id-456", Status: "Running", Port: "8586"},
+		},
+	}
+
+	localConfig.RemoveInstance("old-id-123")
+
+	localConfig.UpsertInstance(Instance{
+		Name:        "microcks",
+		ContainerID: "new-id-789",
+		Status:      "Running",
+		Port:        "8585",
+	})
+
+	// staging + recreated microcks = 2, no duplicates
+	if len(localConfig.Instances) != 2 {
+		t.Errorf("expected 2 instances, got %d — duplicate entries present", len(localConfig.Instances))
+	}
+	// verify microcks has new ID
+	for _, i := range localConfig.Instances {
+		if i.Name == "microcks" && i.ContainerID != "new-id-789" {
+			t.Errorf("expected new-id-789, got %s", i.ContainerID)
+		}
+	}
+}