1 files changed, 99 insertions, 0 deletions
diff --git a/vendor/k8s.io/kubernetes/pkg/volume/metrics_du.go b/vendor/k8s.io/kubernetes/pkg/volume/metrics_du.go
new file mode 100644
index 000000000..19a29cbbc
--- /dev/null
+++ b/vendor/k8s.io/kubernetes/pkg/volume/metrics_du.go
@@ -0,0 +1,99 @@
+/*
+Copyright 2014 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 volume
+
+import (
+	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/pkg/volume/util"
+)
+
+var _ MetricsProvider = &metricsDu{}
+
+// metricsDu represents a MetricsProvider that calculates the used and
+// available Volume space by executing the "du" command and gathering
+// filesystem info for the Volume path.
+type metricsDu struct {
+	// the directory path the volume is mounted to.
+	path string
+}
+
+// NewMetricsDu creates a new metricsDu with the Volume path.
+func NewMetricsDu(path string) MetricsProvider {
+	return &metricsDu{path}
+}
+
+// GetMetrics calculates the volume usage and device free space by executing "du"
+// and gathering filesystem info for the Volume path.
+// See MetricsProvider.GetMetrics
+func (md *metricsDu) GetMetrics() (*Metrics, error) {
+	metrics := &Metrics{Time: metav1.Now()}
+	if md.path == "" {
+		return metrics, NewNoPathDefinedError()
+	}
+
+	err := md.runDu(metrics)
+	if err != nil {
+		return metrics, err
+	}
+
+	err = md.runFind(metrics)
+	if err != nil {
+		return metrics, err
+	}
+
+	err = md.getFsInfo(metrics)
+	if err != nil {
+		return metrics, err
+	}
+
+	return metrics, nil
+}
+
+// runDu executes the "du" command and writes the results to metrics.Used
+func (md *metricsDu) runDu(metrics *Metrics) error {
+	used, err := util.Du(md.path)
+	if err != nil {
+		return err
+	}
+	metrics.Used = used
+	return nil
+}
+
+// runFind executes the "find" command and writes the results to metrics.InodesUsed
+func (md *metricsDu) runFind(metrics *Metrics) error {
+	inodesUsed, err := util.Find(md.path)
+	if err != nil {
+		return err
+	}
+	metrics.InodesUsed = resource.NewQuantity(inodesUsed, resource.BinarySI)
+	return nil
+}
+
+// getFsInfo writes metrics.Capacity and metrics.Available from the filesystem
+// info
+func (md *metricsDu) getFsInfo(metrics *Metrics) error {
+	available, capacity, _, inodes, inodesFree, _, err := util.FsInfo(md.path)
+	if err != nil {
+		return NewFsInfoFailedError(err)
+	}
+	metrics.Available = resource.NewQuantity(available, resource.BinarySI)
+	metrics.Capacity = resource.NewQuantity(capacity, resource.BinarySI)
+	metrics.Inodes = resource.NewQuantity(inodes, resource.BinarySI)
+	metrics.InodesFree = resource.NewQuantity(inodesFree, resource.BinarySI)
+	return nil
+}