| package discovery |
| |
| import ( |
| "crypto/sha256" |
| "io" |
| "os" |
| ) |
| |
| // PluginMeta is metadata about a plugin, useful for launching the plugin |
| // and for understanding which plugins are available. |
| type PluginMeta struct { |
| // Name is the name of the plugin, e.g. as inferred from the plugin |
| // binary's filename, or by explicit configuration. |
| Name string |
| |
| // Version is the semver version of the plugin, expressed as a string |
| // that might not be semver-valid. |
| Version VersionStr |
| |
| // Path is the absolute path of the executable that can be launched |
| // to provide the RPC server for this plugin. |
| Path string |
| } |
| |
| // SHA256 returns a SHA256 hash of the content of the referenced executable |
| // file, or an error if the file's contents cannot be read. |
| func (m PluginMeta) SHA256() ([]byte, error) { |
| f, err := os.Open(m.Path) |
| if err != nil { |
| return nil, err |
| } |
| defer f.Close() |
| |
| h := sha256.New() |
| _, err = io.Copy(h, f) |
| if err != nil { |
| return nil, err |
| } |
| |
| return h.Sum(nil), nil |
| } |
