Add polling for the get instance

builder/powervs/step_create_instance.go

@@ -61,10 +61,20 @@ func (s *StepCreateInstance) Run(_ context.Context, state multistep.StateBag) mu
 		return multistep.ActionHalt
 	}
 
-	in, err := instanceClient.Get(insIDs[0])
-	if err != nil {
+	var in *models.PVMInstance
+
+	if err := pollUntil(time.Tick(30*time.Second), time.After(5*time.Minute), func() (bool, error) {
+		in, err = instanceClient.Get(insIDs[0])
+		if err != nil || in == nil {
+			ui.Message("No response or error encountered while retrieving the instance. Retrying...")
+			return false, nil
+		}
+		return true, nil
+	}); err != nil {
 		ui.Error(fmt.Sprintf("failed to get instance: %v", err))
+		return multistep.ActionHalt
 	}
+
 	ui.Message(fmt.Sprintf("Instance Created, Name: %s, ID: %s", *in.ServerName, *in.PvmInstanceID))
 
 	state.Put("instance", in)

builder/powervs/util.go

@@ -0,0 +1,24 @@
+package powervs
+
+import (
+	"fmt"
+	"time"
+)
+
+// pollUntil validates if a certain condition is met at defined poll intervals.
+// If a timeout is reached, an associated error is returned to the caller.
+// condition contains the use-case specific code that returns true when a certain condition is achieved.
+func pollUntil(pollInterval, timeOut <-chan time.Time, condition func() (bool, error)) error {
+	for {
+		select {
+		case <-timeOut:
+			return fmt.Errorf("timed out while waiting for job to complete")
+		case <-pollInterval:
+			if done, err := condition(); err != nil {
+				return err
+			} else if done {
+				return nil
+			}
+		}
+	}
+}