Adding a task event for setup

api/tasks.go

@@ -409,6 +409,7 @@ type TaskState struct {
 }
 
 const (
+	TaskSetup                  = "Task Setup"
 	TaskSetupFailure           = "Setup Failure"
 	TaskDriverFailure          = "Driver Failure"
 	TaskDriverMessage          = "Driver"

client/task_runner.go

@@ -422,6 +422,8 @@ func (r *TaskRunner) Run() {
 	// Build base task directory structure regardless of FS isolation abilities.
 	// This needs to happen before we start the Vault manager and call prestart
 	// as both those can write to the task directories
+	r.setState(structs.TaskStatePending, structs.NewTaskEvent(structs.TaskSetup).
+		SetMessage(structs.TaskBuildingTaskDir))
 	if err := r.buildTaskDir(drv.FSIsolation()); err != nil {
 		e := fmt.Errorf("failed to build task directory for %q: %v", r.task.Name, err)
 		r.setState(

command/alloc_status.go

@@ -280,6 +280,8 @@ func (c *AllocStatusCommand) outputTaskStatus(state *api.TaskState) {
 		// Build up the description based on the event type.
 		var desc string
 		switch event.Type {
+		case api.TaskSetup:
+			desc = event.Message
 		case api.TaskStarted:
 			desc = "Task started by client"
 		case api.TaskReceived:

nomad/structs/structs.go

@@ -2853,6 +2853,13 @@ const (
 	// failed.
 	TaskArtifactDownloadFailed = "Failed Artifact Download"
 
+	// TaskBuildingTaskDir indicates that the task direcotry/chroot is being
+	// built.
+	TaskBuildingTaskDir = "Building Task Directory"
+
+	// TaskSetup indicates the task runner is setting up the task environment
+	TaskSetup = "Task Setup"
+
 	// TaskDiskExceeded indicates that one of the tasks in a taskgroup has
 	// exceeded the requested disk resources.
 	TaskDiskExceeded = "Disk Resources Exceeded"
@@ -2935,6 +2942,12 @@ func (te *TaskEvent) GoString() string {
 	return fmt.Sprintf("%v at %v", te.Type, te.Time)
 }
 
+// SetMessage sets the message of TaskEvent
+func (te *TaskEvent) SetMessage(msg string) *TaskEvent {
+	te.Message = msg
+	return te
+}
+
 func (te *TaskEvent) Copy() *TaskEvent {
 	if te == nil {
 		return nil