2a1bd7414b
We introduce a WithSpecFromFile option combinator to allow creation simpler creation of OCI specs from a file name. Often used as the first option in a `SpecOpts` slice, it simplifies choosing between a local file and the built-in default. The code in `ctr run` has been updated to use the new option, with out changing the order of operations or functionality present there. Signed-off-by: Stephen Day <stephen.day@getcruise.com>
57 lines
1.7 KiB
Go
57 lines
1.7 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 oci
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/containerd/containerd/containers"
|
|
specs "github.com/opencontainers/runtime-spec/specs-go"
|
|
)
|
|
|
|
// Spec is a type alias to the OCI runtime spec to allow third part SpecOpts
|
|
// to be created without the "issues" with go vendoring and package imports
|
|
type Spec = specs.Spec
|
|
|
|
// GenerateSpec will generate a default spec from the provided image
|
|
// for use as a containerd container
|
|
func GenerateSpec(ctx context.Context, client Client, c *containers.Container, opts ...SpecOpts) (*Spec, error) {
|
|
s, err := createDefaultSpec(ctx, c.ID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return s, ApplyOpts(ctx, client, c, s, opts...)
|
|
}
|
|
|
|
// ApplyOpts applys the options to the given spec, injecting data from the
|
|
// context, client and container instance.
|
|
func ApplyOpts(ctx context.Context, client Client, c *containers.Container, s *Spec, opts ...SpecOpts) error {
|
|
for _, o := range opts {
|
|
if err := o(ctx, client, c, s); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func createDefaultSpec(ctx context.Context, id string) (*Spec, error) {
|
|
var s Spec
|
|
return &s, populateDefaultSpec(ctx, &s, id)
|
|
}
|