support Azure File Service volume

Signed-off-by: Huamin Chen <hchen@redhat.com>

pkg/volume/azure_file/azure_util.go

@@ -0,0 +1,55 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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 azure_file
+
+import (
+	"fmt"
+
+	"k8s.io/kubernetes/pkg/volume"
+)
+
+// Abstract interface to azure file operations.
+type azureUtil interface {
+	GetAzureCredentials(host volume.VolumeHost, nameSpace, secretName, shareName string) (string, string, error)
+}
+
+type azureSvc struct{}
+
+func (s *azureSvc) GetAzureCredentials(host volume.VolumeHost, nameSpace, secretName, shareName string) (string, string, error) {
+	var accountKey, accountName string
+	kubeClient := host.GetKubeClient()
+	if kubeClient == nil {
+		return "", "", fmt.Errorf("Cannot get kube client")
+	}
+
+	keys, err := kubeClient.Core().Secrets(nameSpace).Get(secretName)
+	if err != nil {
+		return "", "", fmt.Errorf("Couldn't get secret %v/%v", nameSpace, secretName)
+	}
+	for name, data := range keys.Data {
+		if name == "azurestorageaccountname" {
+			accountName = string(data)
+		}
+		if name == "azurestorageaccountkey" {
+			accountKey = string(data)
+		}
+	}
+	if accountName == "" || accountKey == "" {
+		return "", "", fmt.Errorf("Invalid %v/%v, couldn't extract azurestorageaccountname or azurestorageaccountkey", nameSpace, secretName)
+	}
+	return accountName, accountKey, nil
+}