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Merge pull request vmware-tanzu#5190 from ywk253100/220808_restic
Refactor the restic repo related code for Kopia integration
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,188 @@ | ||
| /* | ||
| Copyright the Velero contributors. | ||
| 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 repository | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/pkg/errors" | ||
| "github.com/sirupsen/logrus" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
|
|
||
| "github.com/vmware-tanzu/velero/internal/credentials" | ||
| velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1" | ||
| "github.com/vmware-tanzu/velero/pkg/repository/provider" | ||
| "github.com/vmware-tanzu/velero/pkg/restic" | ||
| "github.com/vmware-tanzu/velero/pkg/util/filesystem" | ||
| ) | ||
|
|
||
| // Manager manages backup repositories. | ||
| type Manager interface { | ||
| // InitRepo initializes a repo with the specified name and identifier. | ||
| InitRepo(repo *velerov1api.BackupRepository) error | ||
|
|
||
| // ConnectToRepo runs the 'restic snapshots' command against the | ||
| // specified repo, and returns an error if it fails. This is | ||
| // intended to be used to ensure that the repo exists/can be | ||
| // authenticated to. | ||
| ConnectToRepo(repo *velerov1api.BackupRepository) error | ||
|
|
||
| // PruneRepo deletes unused data from a repo. | ||
| PruneRepo(repo *velerov1api.BackupRepository) error | ||
|
|
||
| // UnlockRepo removes stale locks from a repo. | ||
| UnlockRepo(repo *velerov1api.BackupRepository) error | ||
|
|
||
| // Forget removes a snapshot from the list of | ||
| // available snapshots in a repo. | ||
| Forget(context.Context, restic.SnapshotIdentifier) error | ||
| } | ||
|
|
||
| type manager struct { | ||
| namespace string | ||
| providers map[string]provider.Provider | ||
| client client.Client | ||
| repoLocker *RepoLocker | ||
| repoEnsurer *RepositoryEnsurer | ||
| fileSystem filesystem.Interface | ||
| log logrus.FieldLogger | ||
| } | ||
|
|
||
| // NewManager create a new repository manager. | ||
| func NewManager( | ||
| namespace string, | ||
| client client.Client, | ||
| repoLocker *RepoLocker, | ||
| repoEnsurer *RepositoryEnsurer, | ||
| credentialFileStore credentials.FileStore, | ||
| log logrus.FieldLogger, | ||
| ) Manager { | ||
| mgr := &manager{ | ||
| namespace: namespace, | ||
| client: client, | ||
| providers: map[string]provider.Provider{}, | ||
| repoLocker: repoLocker, | ||
| repoEnsurer: repoEnsurer, | ||
| fileSystem: filesystem.NewFileSystem(), | ||
| log: log, | ||
| } | ||
|
|
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| mgr.providers[velerov1api.BackupRepositoryTypeRestic] = provider.NewResticRepositoryProvider(credentialFileStore, mgr.fileSystem, mgr.log) | ||
|
|
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| return mgr | ||
| } | ||
|
|
||
| func (m *manager) InitRepo(repo *velerov1api.BackupRepository) error { | ||
| m.repoLocker.LockExclusive(repo.Name) | ||
| defer m.repoLocker.UnlockExclusive(repo.Name) | ||
|
|
||
| prd, err := m.getRepositoryProvider(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| param, err := m.assembleRepoParam(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| return prd.InitRepo(context.Background(), param) | ||
| } | ||
|
|
||
| func (m *manager) ConnectToRepo(repo *velerov1api.BackupRepository) error { | ||
| m.repoLocker.Lock(repo.Name) | ||
| defer m.repoLocker.Unlock(repo.Name) | ||
|
|
||
| prd, err := m.getRepositoryProvider(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| param, err := m.assembleRepoParam(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| return prd.ConnectToRepo(context.Background(), param) | ||
| } | ||
|
|
||
| func (m *manager) PruneRepo(repo *velerov1api.BackupRepository) error { | ||
| m.repoLocker.LockExclusive(repo.Name) | ||
| defer m.repoLocker.UnlockExclusive(repo.Name) | ||
|
|
||
| prd, err := m.getRepositoryProvider(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| param, err := m.assembleRepoParam(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| return prd.PruneRepo(context.Background(), param) | ||
| } | ||
|
|
||
| func (m *manager) UnlockRepo(repo *velerov1api.BackupRepository) error { | ||
| m.repoLocker.Lock(repo.Name) | ||
| defer m.repoLocker.Unlock(repo.Name) | ||
|
|
||
| prd, err := m.getRepositoryProvider(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| param, err := m.assembleRepoParam(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| return prd.EnsureUnlockRepo(context.Background(), param) | ||
| } | ||
|
|
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| func (m *manager) Forget(ctx context.Context, snapshot restic.SnapshotIdentifier) error { | ||
| repo, err := m.repoEnsurer.EnsureRepo(ctx, m.namespace, snapshot.VolumeNamespace, snapshot.BackupStorageLocation) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| m.repoLocker.LockExclusive(repo.Name) | ||
| defer m.repoLocker.UnlockExclusive(repo.Name) | ||
|
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| prd, err := m.getRepositoryProvider(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| param, err := m.assembleRepoParam(repo) | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| return prd.Forget(context.Background(), snapshot.SnapshotID, param) | ||
| } | ||
|
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| func (m *manager) getRepositoryProvider(repo *velerov1api.BackupRepository) (provider.Provider, error) { | ||
| switch repo.Spec.RepositoryType { | ||
| case "", velerov1api.BackupRepositoryTypeRestic: | ||
| return m.providers[velerov1api.BackupRepositoryTypeRestic], nil | ||
| default: | ||
| return nil, fmt.Errorf("failed to get provider for repository %s", repo.Spec.RepositoryType) | ||
| } | ||
| } | ||
|
|
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| func (m *manager) assembleRepoParam(repo *velerov1api.BackupRepository) (provider.RepoParam, error) { | ||
| bsl := &velerov1api.BackupStorageLocation{} | ||
| if err := m.client.Get(context.Background(), client.ObjectKey{m.namespace, repo.Spec.BackupStorageLocation}, bsl); err != nil { | ||
| return provider.RepoParam{}, errors.WithStack(err) | ||
| } | ||
| return provider.RepoParam{ | ||
| BackupLocation: bsl, | ||
| BackupRepo: repo, | ||
| }, nil | ||
| } |
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