kubernetes/pkg/printers/ShortHumanDuration -> apimachinery/pkg/util/duration

Signed-off-by: Steve Kriss <steve@heptio.com>

Gopkg.lock

@@ -525,6 +525,7 @@
     "pkg/util/cache",
     "pkg/util/clock",
     "pkg/util/diff",
+    "pkg/util/duration",
     "pkg/util/errors",
     "pkg/util/framer",
     "pkg/util/httpstream",

pkg/cmd/util/output/backup_printer.go

@@ -24,6 +24,7 @@ import (
 	"time"
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/duration"
 	"k8s.io/kubernetes/pkg/printers"
 
 	"github.com/heptio/ark/pkg/apis/ark/v1"
@@ -111,8 +112,8 @@ func humanReadableTimeFromNow(when time.Time) string {
 	now := time.Now()
 	switch {
 	case when == now || when.After(now):
-		return printers.ShortHumanDuration(when.Sub(now))
+		return duration.ShortHumanDuration(when.Sub(now))
 	default:
-		return fmt.Sprintf("%s ago", printers.ShortHumanDuration(now.Sub(when)))
+		return fmt.Sprintf("%s ago", duration.ShortHumanDuration(now.Sub(when)))
 	}
 }

vendor/k8s.io/apimachinery/pkg/util/duration/duration.go

@@ -0,0 +1,43 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package duration
+
+import (
+	"fmt"
+	"time"
+)
+
+// ShortHumanDuration returns a succint representation of the provided duration
+// with limited precision for consumption by humans.
+func ShortHumanDuration(d time.Duration) string {
+	// Allow deviation no more than 2 seconds(excluded) to tolerate machine time
+	// inconsistence, it can be considered as almost now.
+	if seconds := int(d.Seconds()); seconds < -1 {
+		return fmt.Sprintf("<invalid>")
+	} else if seconds < 0 {
+		return fmt.Sprintf("0s")
+	} else if seconds < 60 {
+		return fmt.Sprintf("%ds", seconds)
+	} else if minutes := int(d.Minutes()); minutes < 60 {
+		return fmt.Sprintf("%dm", minutes)
+	} else if hours := int(d.Hours()); hours < 24 {
+		return fmt.Sprintf("%dh", hours)
+	} else if hours < 24*365 {
+		return fmt.Sprintf("%dd", hours/24)
+	}
+	return fmt.Sprintf("%dy", int(d.Hours()/24/365))
+}