1a10211e3f
We should never return a nil context because of the way this function is typically used... e.g. ``` ctx, done, err := containerd.WithLease(ctx) ``` If there is an error `ctx` will be nil and any error handling may cause an NPE if it tries to use `ctx`. Signed-off-by: Brian Goff <cpuguy83@gmail.com>
55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
/*
|
|
Copyright The containerd 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 containerd
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
"github.com/containerd/containerd/leases"
|
|
)
|
|
|
|
// WithLease attaches a lease on the context
|
|
func (c *Client) WithLease(ctx context.Context, opts ...leases.Opt) (context.Context, func(context.Context) error, error) {
|
|
nop := func(context.Context) error { return nil }
|
|
|
|
_, ok := leases.FromContext(ctx)
|
|
if ok {
|
|
return ctx, nop, nil
|
|
}
|
|
|
|
ls := c.LeasesService()
|
|
|
|
if len(opts) == 0 {
|
|
// Use default lease configuration if no options provided
|
|
opts = []leases.Opt{
|
|
leases.WithRandomID(),
|
|
leases.WithExpiration(24 * time.Hour),
|
|
}
|
|
}
|
|
|
|
l, err := ls.Create(ctx, opts...)
|
|
if err != nil {
|
|
return ctx, nop, err
|
|
}
|
|
|
|
ctx = leases.WithLease(ctx, l.ID)
|
|
return ctx, func(ctx context.Context) error {
|
|
return ls.Delete(ctx, l)
|
|
}, nil
|
|
}
|