1 files changed, 59 insertions, 0 deletions
diff --git a/vendor/github.com/mitchellh/packer/builder/oracle/oci/client/waiters.go b/vendor/github.com/mitchellh/packer/builder/oracle/oci/client/waiters.go
new file mode 100644
index 00000000..bb9ca1c1
--- /dev/null
+++ b/vendor/github.com/mitchellh/packer/builder/oracle/oci/client/waiters.go
@@ -0,0 +1,59 @@
+package oci
+
+import (
+	"fmt"
+	"time"
+)
+
+const (
+	defaultWaitDurationMS = 5000
+	defaultMaxRetries     = 0
+)
+
+type Waiter struct {
+	WaitDurationMS int
+	MaxRetries     int
+}
+
+type WaitableService interface {
+	GetResourceState(id string) (string, error)
+}
+
+func stringSliceContains(slice []string, value string) bool {
+	for _, elem := range slice {
+		if elem == value {
+			return true
+		}
+	}
+	return false
+}
+
+// NewWaiter creates a waiter with default wait duration and unlimited retry
+// operations.
+func NewWaiter() *Waiter {
+	return &Waiter{WaitDurationMS: defaultWaitDurationMS, MaxRetries: defaultMaxRetries}
+}
+
+// WaitForResourceToReachState polls a resource that implements WaitableService
+// repeatedly until it reaches a known state or fails if it reaches an
+// unexpected state. The duration of the interval and number of polls is
+// determined by the Waiter configuration.
+func (w *Waiter) WaitForResourceToReachState(svc WaitableService, id string, waitStates []string, terminalState string) error {
+	for i := 0; w.MaxRetries == 0 || i < w.MaxRetries; i++ {
+		state, err := svc.GetResourceState(id)
+		if err != nil {
+			return err
+		}
+
+		if stringSliceContains(waitStates, state) {
+			time.Sleep(time.Duration(w.WaitDurationMS) * time.Millisecond)
+			continue
+		} else if state == terminalState {
+			return nil
+		}
+
+		return fmt.Errorf("Unexpected resource state %s, expecting a waiting state %s or terminal state  %s ", state, waitStates, terminalState)
+	}
+
+	return fmt.Errorf("Maximum number of retries (%d) exceeded; resource did not reach state %s", w.MaxRetries, terminalState)
+}