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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
}
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