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Merge pull request #1 from rootfs/dev
[WIP] provision PV
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,148 @@ | ||
| /* | ||
| 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 controller | ||
|
|
||
| import ( | ||
| "context" | ||
| "net" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/golang/glog" | ||
|
|
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| "github.com/kubernetes-incubator/external-storage/lib/controller" | ||
|
|
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| "k8s.io/api/core/v1" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/rest" | ||
|
|
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| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/connectivity" | ||
|
|
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| "github.com/container-storage-interface/spec/lib/go/csi" | ||
| ) | ||
|
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| type csiProvisioner struct { | ||
| client kubernetes.Interface | ||
| csiClient csi.ControllerClient | ||
| timeout time.Duration | ||
| identity string | ||
| config *rest.Config | ||
| } | ||
|
|
||
| var _ controller.Provisioner = &csiProvisioner{} | ||
|
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| // Version of CSI this client implements | ||
| var ( | ||
| csiVersion = csi.Version{ | ||
| Major: 0, | ||
| Minor: 1, | ||
| Patch: 0, | ||
| } | ||
| accessMode = &csi.VolumeCapability_AccessMode{ | ||
| Mode: csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER, | ||
| } | ||
| ) | ||
|
|
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| // from external-attacher/pkg/connection | ||
| func logGRPC(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error { | ||
| glog.V(5).Infof("GRPC call: %s", method) | ||
| glog.V(5).Infof("GRPC request: %+v", req) | ||
| err := invoker(ctx, method, req, reply, cc, opts...) | ||
| glog.V(5).Infof("GRPC response: %+v", reply) | ||
| glog.V(5).Infof("GRPC error: %v", err) | ||
| return err | ||
| } | ||
|
|
||
| func connect(address string, timeout time.Duration) (*grpc.ClientConn, error) { | ||
| glog.V(2).Infof("Connecting to %s", address) | ||
| dialOptions := []grpc.DialOption{ | ||
| grpc.WithInsecure(), | ||
| grpc.WithBackoffMaxDelay(time.Second), | ||
| grpc.WithUnaryInterceptor(logGRPC), | ||
| } | ||
| if strings.HasPrefix(address, "/") { | ||
| dialOptions = append(dialOptions, grpc.WithDialer(func(addr string, timeout time.Duration) (net.Conn, error) { | ||
| return net.DialTimeout("unix", addr, timeout) | ||
| })) | ||
| } | ||
| conn, err := grpc.Dial(address, dialOptions...) | ||
|
|
||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| ctx, cancel := context.WithTimeout(context.Background(), timeout) | ||
| defer cancel() | ||
| for { | ||
| if !conn.WaitForStateChange(ctx, conn.GetState()) { | ||
| glog.V(4).Infof("Connection timed out") | ||
| return conn, nil // return nil, subsequent GetPluginInfo will show the real connection error | ||
| } | ||
| if conn.GetState() == connectivity.Ready { | ||
| glog.V(3).Infof("Connected") | ||
| return conn, nil | ||
| } | ||
| glog.V(4).Infof("Still trying, connection is %s", conn.GetState()) | ||
| } | ||
| } | ||
|
|
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| func NewCSIProvisioner(client kubernetes.Interface, csiEndpoint string, connectionTimeout time.Duration, identity string) controller.Provisioner { | ||
| grpcClient, err := connect(csiEndpoint, connectionTimeout) | ||
| if err != nil || grpcClient == nil { | ||
| glog.Fatalf("failed to connect to csi endpoint :%v", err) | ||
| } | ||
|
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| csiClient := csi.NewControllerClient(grpcClient) | ||
| provisioner := &csiProvisioner{ | ||
| client: client, | ||
| csiClient: csiClient, | ||
| timeout: connectionTimeout, | ||
| identity: identity, | ||
| } | ||
| return provisioner | ||
| } | ||
|
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| func (p *csiProvisioner) Provision(options controller.VolumeOptions) (*v1.PersistentVolume, error) { | ||
| glog.Infof("Provisioner %s Provision(..) called..") | ||
| req := csi.CreateVolumeRequest{ | ||
| Name: "mypv", | ||
| Version: &csiVersion, | ||
| VolumeCapabilities: []*csi.VolumeCapability{ | ||
| &csi.VolumeCapability{ | ||
| AccessMode: accessMode, | ||
| }, | ||
| }, | ||
| CapacityRange: &csi.CapacityRange{ | ||
| RequiredBytes: 100, | ||
| LimitBytes: 100, | ||
| }, | ||
| } | ||
| ctx, cancel := context.WithTimeout(context.Background(), p.timeout) | ||
| defer cancel() | ||
|
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| _, err := p.csiClient.CreateVolume(ctx, &req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return nil, nil | ||
| } | ||
|
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| func (p *csiProvisioner) Delete(volume *v1.PersistentVolume) error { | ||
| glog.Infof("Provisioner %s Delete(..) called..") | ||
| return nil | ||
| } |