|
| 1 | +/* |
| 2 | +Copyright 2020 The Kubernetes Authors. |
| 3 | +
|
| 4 | +Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +you may not use this file except in compliance with the License. |
| 6 | +You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | +Unless required by applicable law or agreed to in writing, software |
| 11 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +See the License for the specific language governing permissions and |
| 14 | +limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package bucket |
| 18 | + |
| 19 | +import ( |
| 20 | + "context" |
| 21 | + "fmt" |
| 22 | + "strings" |
| 23 | + "time" |
| 24 | + |
| 25 | + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 26 | + utilversion "k8s.io/apimachinery/pkg/util/version" |
| 27 | + |
| 28 | + kubeclientset "k8s.io/client-go/kubernetes" |
| 29 | + "k8s.io/client-go/util/retry" |
| 30 | + "k8s.io/client-go/util/workqueue" |
| 31 | + |
| 32 | + "github.com/kubernetes-sigs/container-object-storage-interface-api/apis/objectstorage.k8s.io/v1alpha1" |
| 33 | + bucketclientset "github.com/kubernetes-sigs/container-object-storage-interface-api/clientset" |
| 34 | + "github.com/kubernetes-sigs/container-object-storage-interface-api/controller" |
| 35 | + |
| 36 | + osspec "github.com/kubernetes-sigs/container-object-storage-interface-spec" |
| 37 | + |
| 38 | + "k8s.io/klog" |
| 39 | + |
| 40 | + "golang.org/x/time/rate" |
| 41 | +) |
| 42 | + |
| 43 | +// bucketListener manages Bucket objects |
| 44 | +type bucketListener struct { |
| 45 | + kubeClient kubeclientset.Interface |
| 46 | + bucketClient bucketclientset.Interface |
| 47 | + provisionerClient osspec.ProvisionerClient |
| 48 | + |
| 49 | + // The name of the provisioner for which this controller dynamically |
| 50 | + // provisions buckets. |
| 51 | + provisionerName string |
| 52 | + kubeVersion *utilversion.Version |
| 53 | +} |
| 54 | + |
| 55 | +// NewBucketController returns a controller that manages Bucket objects |
| 56 | +func NewBucketController(provisionerName string, client osspec.ProvisionerClient) (*controller.ObjectStorageController, error) { |
| 57 | + rateLimit := workqueue.NewMaxOfRateLimiter( |
| 58 | + workqueue.NewItemExponentialFailureRateLimiter(5*time.Second, 60*time.Minute), |
| 59 | + &workqueue.BucketRateLimiter{Limiter: rate.NewLimiter(rate.Limit(10), 100)}, |
| 60 | + ) |
| 61 | + |
| 62 | + identity := fmt.Sprintf("object-storage-sidecar-%s", provisionerName) |
| 63 | + bc, err := controller.NewObjectStorageController(identity, "bucket-controller", 5, rateLimit) |
| 64 | + if err != nil { |
| 65 | + return nil, err |
| 66 | + } |
| 67 | + |
| 68 | + bl := bucketListener{ |
| 69 | + provisionerName: provisionerName, |
| 70 | + provisionerClient: client, |
| 71 | + } |
| 72 | + bc.AddBucketListener(&bl) |
| 73 | + |
| 74 | + return bc, nil |
| 75 | +} |
| 76 | + |
| 77 | +// InitializeKubeClient initializes the kubernetes client |
| 78 | +func (bl *bucketListener) InitializeKubeClient(k kubeclientset.Interface) { |
| 79 | + bl.kubeClient = k |
| 80 | + |
| 81 | + serverVersion, err := k.Discovery().ServerVersion() |
| 82 | + if err != nil { |
| 83 | + klog.Errorf("unable to get server version: %v", err) |
| 84 | + } else { |
| 85 | + bl.kubeVersion = utilversion.MustParseSemantic(serverVersion.GitVersion) |
| 86 | + } |
| 87 | +} |
| 88 | + |
| 89 | +// InitializeBucketClient initializes the object storage bucket client |
| 90 | +func (bl *bucketListener) InitializeBucketClient(bc bucketclientset.Interface) { |
| 91 | + bl.bucketClient = bc |
| 92 | +} |
| 93 | + |
| 94 | +// Add will call the provisioner and add a bucket |
| 95 | +func (bl *bucketListener) Add(ctx context.Context, obj *v1alpha1.Bucket) error { |
| 96 | + klog.V(1).Infof("bucketListener: add called for bucket %s", obj.Name) |
| 97 | + |
| 98 | + // Verify this bucket is for this provisioner |
| 99 | + if !strings.EqualFold(obj.Spec.Provisioner, bl.provisionerName) { |
| 100 | + return nil |
| 101 | + } |
| 102 | + |
| 103 | + req := osspec.ProvisionerCreateBucketRequest{ |
| 104 | + BucketName: obj.Name, |
| 105 | + BucketContext: obj.Spec.Parameters, |
| 106 | + } |
| 107 | + |
| 108 | + req.BucketContext["ProtocolVersion"] = obj.Spec.Protocol.Version |
| 109 | + |
| 110 | + if obj.Spec.AnonymousAccessMode.Private { |
| 111 | + req.AnonymousBucketAccessMode = osspec.ProvisionerCreateBucketRequest_BUCKET_PRIVATE |
| 112 | + } else if obj.Spec.AnonymousAccessMode.PublicReadOnly { |
| 113 | + req.AnonymousBucketAccessMode = osspec.ProvisionerCreateBucketRequest_BUCKET_READ_ONLY |
| 114 | + } else if obj.Spec.AnonymousAccessMode.PublicReadWrite { |
| 115 | + req.AnonymousBucketAccessMode = osspec.ProvisionerCreateBucketRequest_BUCKET_WRITE_ONLY |
| 116 | + } else if obj.Spec.AnonymousAccessMode.PublicWriteOnly { |
| 117 | + req.AnonymousBucketAccessMode = osspec.ProvisionerCreateBucketRequest_BUCKET_READ_WRITE |
| 118 | + } |
| 119 | + |
| 120 | + // TODO set grpc timeout |
| 121 | + rsp, err := bl.provisionerClient.ProvisionerCreateBucket(ctx, &req) |
| 122 | + if err != nil { |
| 123 | + klog.Errorf("error calling ProvisionerCreateBucket: %v", err) |
| 124 | + return err |
| 125 | + } |
| 126 | + klog.V(1).Infof("provisioner returned create bucket response %v", rsp) |
| 127 | + |
| 128 | + // TODO update the bucket protocol in the bucket spec |
| 129 | + |
| 130 | + // update bucket availability to true |
| 131 | + return bl.updateStatus(ctx, obj.Name, "Bucket Provisioned", true) |
| 132 | +} |
| 133 | + |
| 134 | +// Update does nothing |
| 135 | +func (bl *bucketListener) Update(ctx context.Context, old, new *v1alpha1.Bucket) error { |
| 136 | + klog.V(1).Infof("bucketListener: update called for bucket %s", old.Name) |
| 137 | + return nil |
| 138 | +} |
| 139 | + |
| 140 | +// Delete will call the provisioner and delete a bucket |
| 141 | +func (bl *bucketListener) Delete(ctx context.Context, obj *v1alpha1.Bucket) error { |
| 142 | + klog.V(1).Infof("bucketListener: delete called for bucket %s", obj.Name) |
| 143 | + |
| 144 | + // Verify this bucket is for this provisioner |
| 145 | + if !strings.EqualFold(obj.Spec.Provisioner, bl.provisionerName) { |
| 146 | + return nil |
| 147 | + } |
| 148 | + |
| 149 | + req := osspec.ProvisionerDeleteBucketRequest{ |
| 150 | + BucketContext: obj.Spec.Parameters, |
| 151 | + } |
| 152 | + |
| 153 | + switch obj.Spec.Protocol.Name { |
| 154 | + case v1alpha1.ProtocolNameS3: |
| 155 | + req.BucketName = obj.Spec.Protocol.S3.BucketName |
| 156 | + req.BucketContext["Region"] = obj.Spec.Protocol.S3.Region |
| 157 | + req.BucketContext["SignatureVersion"] = string(obj.Spec.Protocol.S3.SignatureVersion) |
| 158 | + req.BucketContext["Endpoint"] = obj.Spec.Protocol.S3.Endpoint |
| 159 | + case v1alpha1.ProtocolNameAzure: |
| 160 | + req.BucketName = obj.Spec.Protocol.AzureBlob.ContainerName |
| 161 | + req.BucketContext["StorageAccount"] = obj.Spec.Protocol.AzureBlob.StorageAccount |
| 162 | + case v1alpha1.ProtocolNameGCS: |
| 163 | + req.BucketName = obj.Spec.Protocol.GCS.BucketName |
| 164 | + req.BucketContext["ServiceAccount"] = obj.Spec.Protocol.GCS.ServiceAccount |
| 165 | + req.BucketContext["PrivateKeyName"] = obj.Spec.Protocol.GCS.PrivateKeyName |
| 166 | + req.BucketContext["ProjectID"] = obj.Spec.Protocol.GCS.ProjectID |
| 167 | + default: |
| 168 | + return fmt.Errorf("unknown protocol: %s", obj.Spec.Protocol.Name) |
| 169 | + } |
| 170 | + |
| 171 | + req.BucketContext["ProtocolVersion"] = obj.Spec.Protocol.Version |
| 172 | + |
| 173 | + // TODO set grpc timeout |
| 174 | + rsp, err := bl.provisionerClient.ProvisionerDeleteBucket(ctx, &req) |
| 175 | + if err != nil { |
| 176 | + klog.Errorf("error calling ProvisionerDeleteBucket: %v", err) |
| 177 | + obj.Status.Message = "Bucket Deleting" |
| 178 | + obj.Status.BucketAvailable = false |
| 179 | + _, err = bl.bucketClient.ObjectstorageV1alpha1().Buckets().UpdateStatus(ctx, obj, metav1.UpdateOptions{}) |
| 180 | + return err |
| 181 | + } |
| 182 | + klog.V(1).Infof("provisioner returned delete bucket response %v", rsp) |
| 183 | + |
| 184 | + // update bucket availability to false |
| 185 | + return bl.updateStatus(ctx, obj.Name, "Bucket Deleted", false) |
| 186 | +} |
| 187 | + |
| 188 | +func (bl *bucketListener) updateStatus(ctx context.Context, name, msg string, state bool) error { |
| 189 | + err := retry.RetryOnConflict(retry.DefaultRetry, func() error { |
| 190 | + bucket, err := bl.bucketClient.ObjectstorageV1alpha1().Buckets().Get(ctx, name, metav1.GetOptions{}) |
| 191 | + if err != nil { |
| 192 | + return err |
| 193 | + } |
| 194 | + bucket.Status.Message = msg |
| 195 | + bucket.Status.BucketAvailable = state |
| 196 | + _, err = bl.bucketClient.ObjectstorageV1alpha1().Buckets().UpdateStatus(ctx, bucket, metav1.UpdateOptions{}) |
| 197 | + return err |
| 198 | + }) |
| 199 | + return err |
| 200 | +} |
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