140 lines
4.2 KiB
Go
140 lines
4.2 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package s3
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import (
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"fmt"
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"github.com/golang/glog"
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"golang.org/x/net/context"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"github.com/container-storage-interface/spec/lib/go/csi/v0"
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"github.com/kubernetes-csi/drivers/pkg/csi-common"
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)
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type controllerServer struct {
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*csicommon.DefaultControllerServer
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*s3
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}
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func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
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if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
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glog.V(3).Infof("invalid create volume req: %v", req)
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return nil, err
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}
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// Check arguments
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if len(req.GetName()) == 0 {
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return nil, status.Error(codes.InvalidArgument, "Name missing in request")
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}
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if req.GetVolumeCapabilities() == nil {
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return nil, status.Error(codes.InvalidArgument, "Volume Capabilities missing in request")
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}
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volumeID := req.GetName()
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glog.V(5).Infof("Got a request to create bucket %s", volumeID)
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exists, err := cs.s3.client.bucketExists(volumeID)
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if err != nil {
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return nil, err
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}
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if !exists {
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if err = cs.s3.client.createBucket(volumeID); err != nil {
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glog.V(3).Infof("failed to create volume: %v", err)
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return nil, err
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}
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}
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mounter, err := newMounter(volumeID, cs.s3.cfg)
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if err != nil {
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return nil, err
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}
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if err := mounter.Format(); err != nil {
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return nil, err
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}
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glog.V(4).Infof("create volume %s", volumeID)
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s3Vol := s3Volume{}
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s3Vol.VolName = req.GetName()
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s3Vol.VolID = volumeID
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return &csi.CreateVolumeResponse{
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Volume: &csi.Volume{
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Id: volumeID,
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CapacityBytes: 1,
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Attributes: req.GetParameters(),
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},
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}, nil
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}
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func (cs *controllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVolumeRequest) (*csi.DeleteVolumeResponse, error) {
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// Check arguments
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if len(req.GetVolumeId()) == 0 {
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return nil, status.Error(codes.InvalidArgument, "Volume ID missing in request")
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}
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if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
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glog.V(3).Infof("Invalid delete volume req: %v", req)
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return nil, err
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}
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volumeID := req.VolumeId
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glog.V(4).Infof("Deleting volume %s", volumeID)
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exists, err := cs.s3.client.bucketExists(volumeID)
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if err != nil {
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return nil, err
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}
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if exists {
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if err := cs.s3.client.removeBucket(volumeID); err != nil {
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glog.V(3).Infof("Failed to remove volume: %v", err)
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return nil, err
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}
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} else {
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glog.V(5).Infof("Bucket %s does not exist, ignoring request", volumeID)
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}
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return &csi.DeleteVolumeResponse{}, nil
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}
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func (cs *controllerServer) ValidateVolumeCapabilities(ctx context.Context, req *csi.ValidateVolumeCapabilitiesRequest) (*csi.ValidateVolumeCapabilitiesResponse, error) {
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// Check arguments
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if len(req.GetVolumeId()) == 0 {
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return nil, status.Error(codes.InvalidArgument, "Volume ID missing in request")
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}
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if req.GetVolumeCapabilities() == nil {
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return nil, status.Error(codes.InvalidArgument, "Volume capabilities missing in request")
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}
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exists, err := cs.s3.client.bucketExists(req.GetVolumeId())
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if err != nil {
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return nil, err
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}
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if !exists {
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// return an error if the volume requested does not exist
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return nil, status.Error(codes.NotFound, fmt.Sprintf("Volume with id %s does not exist", req.GetVolumeId()))
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}
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for _, cap := range req.VolumeCapabilities {
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if cap.GetAccessMode().GetMode() != csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER {
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return &csi.ValidateVolumeCapabilitiesResponse{Supported: false, Message: ""}, nil
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}
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}
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return &csi.ValidateVolumeCapabilitiesResponse{Supported: true, Message: ""}, nil
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}
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