81 lines
2.4 KiB
Go
81 lines
2.4 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 plugin
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import (
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"errors"
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"github.com/containerd/containerd/v2/platforms"
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"github.com/containerd/containerd/v2/plugins"
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"github.com/containerd/containerd/v2/snapshots/blockfile"
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"github.com/containerd/plugin"
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"github.com/containerd/plugin/registry"
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)
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// Config represents configuration for the native plugin.
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type Config struct {
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// Root directory for the plugin
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RootPath string `toml:"root_path"`
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// ScratchFile is the scratch block file to use as an empty block
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ScratchFile string `toml:"scratch_file"`
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// FSType is the filesystem type for the mount
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FSType string `toml:"fs_type"`
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// MountOptions are options used for the mount
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MountOptions []string `toml:"mount_options"`
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// RecreateScratch always recreates the specified `ScratchFile`
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// on initialization of the plugin instead of using an existing.
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RecreateScratch bool `toml:"recreate_scratch"`
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}
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func init() {
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registry.Register(&plugin.Registration{
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Type: plugins.SnapshotPlugin,
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ID: "blockfile",
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Config: &Config{},
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InitFn: func(ic *plugin.InitContext) (interface{}, error) {
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ic.Meta.Platforms = append(ic.Meta.Platforms, platforms.DefaultSpec())
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config, ok := ic.Config.(*Config)
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if !ok {
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return nil, errors.New("invalid blockfile configuration")
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}
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var opts []blockfile.Opt
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root := ic.Properties[plugins.PropertyRootDir]
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if len(config.RootPath) != 0 {
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root = config.RootPath
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}
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if config.ScratchFile != "" {
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opts = append(opts, blockfile.WithScratchFile(config.ScratchFile))
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}
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if config.FSType != "" {
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opts = append(opts, blockfile.WithFSType(config.FSType))
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}
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if len(config.MountOptions) > 0 {
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opts = append(opts, blockfile.WithMountOptions(config.MountOptions))
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}
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opts = append(opts, blockfile.WithRecreateScratch(config.RecreateScratch))
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return blockfile.NewSnapshotter(root, opts...)
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},
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})
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}
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