| /* |
| Copyright 2016 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 flocker |
| |
| import ( |
| "fmt" |
| |
| "k8s.io/api/core/v1" |
| "k8s.io/apimachinery/pkg/util/rand" |
| |
| volutil "k8s.io/kubernetes/pkg/volume/util" |
| |
| flockerapi "github.com/clusterhq/flocker-go" |
| "k8s.io/klog" |
| ) |
| |
| type flockerUtil struct{} |
| |
| func (util *flockerUtil) DeleteVolume(d *flockerVolumeDeleter) error { |
| var err error |
| |
| if d.flockerClient == nil { |
| d.flockerClient, err = d.plugin.newFlockerClient("") |
| if err != nil { |
| return err |
| } |
| } |
| |
| datasetUUID, err := d.GetDatasetUUID() |
| if err != nil { |
| return err |
| } |
| |
| return d.flockerClient.DeleteDataset(datasetUUID) |
| } |
| |
| func (util *flockerUtil) CreateVolume(c *flockerVolumeProvisioner) (datasetUUID string, volumeSizeGiB int, labels map[string]string, err error) { |
| |
| if c.flockerClient == nil { |
| c.flockerClient, err = c.plugin.newFlockerClient("") |
| if err != nil { |
| return |
| } |
| } |
| |
| nodes, err := c.flockerClient.ListNodes() |
| if err != nil { |
| return |
| } |
| if len(nodes) < 1 { |
| err = fmt.Errorf("no nodes found inside the flocker cluster to provision a dataset") |
| return |
| } |
| |
| // select random node |
| node := nodes[rand.Intn(len(nodes))] |
| klog.V(2).Infof("selected flocker node with UUID '%s' to provision dataset", node.UUID) |
| |
| capacity := c.options.PVC.Spec.Resources.Requests[v1.ResourceName(v1.ResourceStorage)] |
| requestBytes := capacity.Value() |
| volumeSizeGiB, err = volutil.RoundUpToGiBInt(capacity) |
| if err != nil { |
| return |
| } |
| |
| createOptions := &flockerapi.CreateDatasetOptions{ |
| MaximumSize: requestBytes, |
| Metadata: map[string]string{ |
| "type": "k8s-dynamic-prov", |
| "pvc": c.options.PVC.Name, |
| }, |
| Primary: node.UUID, |
| } |
| |
| datasetState, err := c.flockerClient.CreateDataset(createOptions) |
| if err != nil { |
| return |
| } |
| datasetUUID = datasetState.DatasetID |
| |
| klog.V(2).Infof("successfully created Flocker dataset with UUID '%s'", datasetUUID) |
| |
| return |
| } |