110 lines
2.6 KiB
Go
110 lines
2.6 KiB
Go
/*
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Copyright The containerd 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 leases
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import (
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"context"
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"github.com/containerd/containerd/gc"
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"github.com/containerd/containerd/leases"
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"github.com/containerd/containerd/metadata"
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"github.com/containerd/containerd/plugin"
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"github.com/containerd/containerd/services"
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bolt "go.etcd.io/bbolt"
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)
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func init() {
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plugin.Register(&plugin.Registration{
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Type: plugin.ServicePlugin,
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ID: services.LeasesService,
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Requires: []plugin.Type{
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plugin.MetadataPlugin,
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},
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InitFn: func(ic *plugin.InitContext) (interface{}, error) {
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m, err := ic.Get(plugin.MetadataPlugin)
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if err != nil {
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return nil, err
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}
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g, err := ic.Get(plugin.GCPlugin)
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if err != nil {
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return nil, err
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}
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return &local{
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db: m.(*metadata.DB),
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gc: g.(gcScheduler),
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}, nil
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},
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})
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}
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type gcScheduler interface {
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ScheduleAndWait(context.Context) (gc.Stats, error)
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}
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type local struct {
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db *metadata.DB
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gc gcScheduler
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}
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func (l *local) Create(ctx context.Context, opts ...leases.Opt) (leases.Lease, error) {
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var lease leases.Lease
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if err := l.db.Update(func(tx *bolt.Tx) error {
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var err error
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lease, err = metadata.NewLeaseManager(tx).Create(ctx, opts...)
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return err
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}); err != nil {
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return leases.Lease{}, err
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}
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return lease, nil
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}
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func (l *local) Delete(ctx context.Context, lease leases.Lease, opts ...leases.DeleteOpt) error {
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var do leases.DeleteOptions
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for _, opt := range opts {
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if err := opt(ctx, &do); err != nil {
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return err
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}
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}
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if err := l.db.Update(func(tx *bolt.Tx) error {
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return metadata.NewLeaseManager(tx).Delete(ctx, lease)
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}); err != nil {
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return err
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}
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if do.Synchronous {
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if _, err := l.gc.ScheduleAndWait(ctx); err != nil {
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return err
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}
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}
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return nil
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}
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func (l *local) List(ctx context.Context, filters ...string) ([]leases.Lease, error) {
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var ll []leases.Lease
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if err := l.db.View(func(tx *bolt.Tx) error {
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var err error
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ll, err = metadata.NewLeaseManager(tx).List(ctx, filters...)
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return err
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}); err != nil {
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return nil, err
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}
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return ll, nil
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}
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