| /* |
| 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 ( |
| "archive/tar" |
| "context" |
| "os" |
| "path/filepath" |
| |
| introspectionapi "github.com/containerd/containerd/api/services/introspection/v1" |
| "github.com/containerd/containerd/archive" |
| "github.com/containerd/containerd/archive/compression" |
| "github.com/containerd/containerd/content" |
| "github.com/containerd/containerd/images" |
| "github.com/containerd/containerd/platforms" |
| "github.com/pkg/errors" |
| ) |
| |
| // Install a binary image into the opt service |
| func (c *Client) Install(ctx context.Context, image Image, opts ...InstallOpts) error { |
| var config InstallConfig |
| for _, o := range opts { |
| o(&config) |
| } |
| path, err := c.getInstallPath(ctx, config) |
| if err != nil { |
| return err |
| } |
| var ( |
| cs = image.ContentStore() |
| platform = platforms.Default() |
| ) |
| manifest, err := images.Manifest(ctx, cs, image.Target(), platform) |
| if err != nil { |
| return err |
| } |
| for _, layer := range manifest.Layers { |
| ra, err := cs.ReaderAt(ctx, layer) |
| if err != nil { |
| return err |
| } |
| cr := content.NewReader(ra) |
| r, err := compression.DecompressStream(cr) |
| if err != nil { |
| return err |
| } |
| if _, err := archive.Apply(ctx, path, r, archive.WithFilter(func(hdr *tar.Header) (bool, error) { |
| d := filepath.Dir(hdr.Name) |
| result := d == "bin" |
| if config.Libs { |
| result = result || d == "lib" |
| } |
| if result && !config.Replace { |
| if _, err := os.Lstat(filepath.Join(path, hdr.Name)); err == nil { |
| return false, errors.Errorf("cannot replace %s in %s", hdr.Name, path) |
| } |
| } |
| return result, nil |
| })); err != nil { |
| r.Close() |
| return err |
| } |
| r.Close() |
| } |
| return nil |
| } |
| |
| func (c *Client) getInstallPath(ctx context.Context, config InstallConfig) (string, error) { |
| if config.Path != "" { |
| return config.Path, nil |
| } |
| resp, err := c.IntrospectionService().Plugins(ctx, &introspectionapi.PluginsRequest{ |
| Filters: []string{ |
| "id==opt", |
| }, |
| }) |
| if err != nil { |
| return "", err |
| } |
| if len(resp.Plugins) != 1 { |
| return "", errors.New("opt service not enabled") |
| } |
| path := resp.Plugins[0].Exports["path"] |
| if path == "" { |
| return "", errors.New("opt path not exported") |
| } |
| return path, nil |
| } |