| /* |
| Copyright 2017 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 scaleio |
| |
| import ( |
| "errors" |
| "strconv" |
| |
| "k8s.io/kubernetes/pkg/util/mount" |
| |
| "k8s.io/klog" |
| |
| siotypes "github.com/codedellemc/goscaleio/types/v1" |
| ) |
| |
| type storageInterface interface { |
| CreateVolume(string, int64) (*siotypes.Volume, error) |
| AttachVolume(string, bool) (string, error) |
| IsAttached(string) (bool, error) |
| DetachVolume(string) error |
| DeleteVolume(string) error |
| } |
| |
| type sioMgr struct { |
| client sioInterface |
| configData map[string]string |
| exec mount.Exec |
| } |
| |
| func newSioMgr(configs map[string]string, exec mount.Exec) (*sioMgr, error) { |
| if configs == nil { |
| return nil, errors.New("missing configuration data") |
| } |
| configs[confKey.protectionDomain] = defaultString(configs[confKey.protectionDomain], "default") |
| configs[confKey.storagePool] = defaultString(configs[confKey.storagePool], "default") |
| configs[confKey.sdcRootPath] = defaultString(configs[confKey.sdcRootPath], sdcRootPath) |
| configs[confKey.storageMode] = defaultString(configs[confKey.storageMode], "ThinProvisioned") |
| |
| mgr := &sioMgr{configData: configs, exec: exec} |
| return mgr, nil |
| } |
| |
| // getClient safely returns an sioInterface |
| func (m *sioMgr) getClient() (sioInterface, error) { |
| if m.client == nil { |
| klog.V(4).Info(log("creating scaleio client")) |
| configs := m.configData |
| username := configs[confKey.username] |
| password := configs[confKey.password] |
| gateway := configs[confKey.gateway] |
| b, err := strconv.ParseBool(configs[confKey.sslEnabled]) |
| if err != nil { |
| klog.Error(log("failed to parse sslEnabled, must be either \"true\" or \"false\"")) |
| return nil, err |
| } |
| certsEnabled := b |
| |
| klog.V(4).Info(log("creating new client for gateway %s", gateway)) |
| client, err := newSioClient(gateway, username, password, certsEnabled, m.exec) |
| if err != nil { |
| klog.Error(log("failed to create scaleio client: %v", err)) |
| return nil, err |
| } |
| |
| client.sysName = configs[confKey.system] |
| client.pdName = configs[confKey.protectionDomain] |
| client.spName = configs[confKey.storagePool] |
| client.sdcPath = configs[confKey.sdcRootPath] |
| client.provisionMode = configs[confKey.storageMode] |
| client.sdcGUID = configs[confKey.sdcGUID] |
| |
| m.client = client |
| |
| klog.V(4).Info(log("client created successfully [gateway=%s]", gateway)) |
| } |
| return m.client, nil |
| } |
| |
| // CreateVolume creates a new ScaleIO volume |
| func (m *sioMgr) CreateVolume(volName string, sizeGB int64) (*siotypes.Volume, error) { |
| client, err := m.getClient() |
| if err != nil { |
| return nil, err |
| } |
| |
| klog.V(4).Infof("scaleio: creating volume %s", volName) |
| vol, err := client.CreateVolume(volName, sizeGB) |
| if err != nil { |
| klog.V(4).Infof("scaleio: failed creating volume %s: %v", volName, err) |
| return nil, err |
| } |
| klog.V(4).Infof("scaleio: created volume %s successfully", volName) |
| return vol, nil |
| } |
| |
| // AttachVolume maps a ScaleIO volume to the running node. If flag multiMaps, |
| // ScaleIO will allow other SDC to map to volume. |
| func (m *sioMgr) AttachVolume(volName string, multipleMappings bool) (string, error) { |
| client, err := m.getClient() |
| if err != nil { |
| klog.Error(log("attach volume failed: %v", err)) |
| return "", err |
| } |
| |
| klog.V(4).Infoln(log("attaching volume %s", volName)) |
| iid, err := client.IID() |
| if err != nil { |
| klog.Error(log("failed to get instanceID")) |
| return "", err |
| } |
| klog.V(4).Info(log("attaching volume %s to host instance %s", volName, iid)) |
| |
| devs, err := client.Devs() |
| if err != nil { |
| return "", err |
| } |
| |
| vol, err := client.FindVolume(volName) |
| if err != nil { |
| klog.Error(log("failed to find volume %s: %v", volName, err)) |
| return "", err |
| } |
| |
| // handle vol if already attached |
| if len(vol.MappedSdcInfo) > 0 { |
| if m.isSdcMappedToVol(iid, vol) { |
| klog.V(4).Info(log("skippping attachment, volume %s already attached to sdc %s", volName, iid)) |
| return devs[vol.ID], nil |
| } |
| } |
| |
| // attach volume, get deviceName |
| if err := client.AttachVolume(sioVolumeID(vol.ID), multipleMappings); err != nil { |
| klog.Error(log("attachment for volume %s failed :%v", volName, err)) |
| return "", err |
| } |
| device, err := client.WaitForAttachedDevice(vol.ID) |
| if err != nil { |
| klog.Error(log("failed while waiting for device to attach: %v", err)) |
| return "", err |
| } |
| klog.V(4).Info(log("volume %s attached successfully as %s to instance %s", volName, device, iid)) |
| return device, nil |
| } |
| |
| // IsAttached verifies that the named ScaleIO volume is still attached |
| func (m *sioMgr) IsAttached(volName string) (bool, error) { |
| client, err := m.getClient() |
| if err != nil { |
| return false, err |
| } |
| iid, err := client.IID() |
| if err != nil { |
| klog.Error("scaleio: failed to get instanceID") |
| return false, err |
| } |
| |
| vol, err := client.FindVolume(volName) |
| if err != nil { |
| return false, err |
| } |
| return m.isSdcMappedToVol(iid, vol), nil |
| } |
| |
| // DetachVolume detaches the name ScaleIO volume from an instance |
| func (m *sioMgr) DetachVolume(volName string) error { |
| client, err := m.getClient() |
| if err != nil { |
| return err |
| } |
| iid, err := client.IID() |
| if err != nil { |
| klog.Error(log("failed to get instanceID: %v", err)) |
| return err |
| } |
| |
| vol, err := client.FindVolume(volName) |
| if err != nil { |
| return err |
| } |
| if !m.isSdcMappedToVol(iid, vol) { |
| klog.Warning(log( |
| "skipping detached, vol %s not attached to instance %s", |
| volName, iid, |
| )) |
| return nil |
| } |
| |
| if err := client.DetachVolume(sioVolumeID(vol.ID)); err != nil { |
| klog.Error(log("failed to detach vol %s: %v", volName, err)) |
| return err |
| } |
| |
| klog.V(4).Info(log("volume %s detached successfully", volName)) |
| |
| return nil |
| } |
| |
| // DeleteVolumes removes the ScaleIO volume |
| func (m *sioMgr) DeleteVolume(volName string) error { |
| client, err := m.getClient() |
| if err != nil { |
| return err |
| } |
| |
| vol, err := client.FindVolume(volName) |
| if err != nil { |
| return err |
| } |
| |
| if err := client.DeleteVolume(sioVolumeID(vol.ID)); err != nil { |
| klog.Error(log("failed to delete volume %s: %v", volName, err)) |
| return err |
| } |
| |
| klog.V(4).Info(log("deleted volume %s successfully", volName)) |
| return nil |
| |
| } |
| |
| // isSdcMappedToVol returns true if the sdc is mapped to the volume |
| func (m *sioMgr) isSdcMappedToVol(sdcID string, vol *siotypes.Volume) bool { |
| if len(vol.MappedSdcInfo) == 0 { |
| klog.V(4).Info(log("no attachment found")) |
| return false |
| } |
| |
| for _, sdcInfo := range vol.MappedSdcInfo { |
| if sdcInfo.SdcID == sdcID { |
| return true |
| } |
| } |
| return false |
| } |