open-nomad/helper/pluginutils/catalog/catalog.go

54 lines
1.4 KiB
Go

// Package catalog is used to register internal plugins such that they can be
// loaded.
package catalog
import (
"sync"
"github.com/hashicorp/nomad/helper/pluginutils/loader"
)
var (
// catalog is the set of registered internal plugins
catalog = map[loader.PluginID]*Registration{}
mu sync.Mutex
)
// Registration is the registration of an internal plugin
type Registration struct {
Config *loader.InternalPluginConfig
ConfigLoader ConfigFromOptions
}
// ConfigFromOptions is used to retrieve a plugin config when passed a node's
// option map. This allows upgrade pathing from the old configuration format to
// the new config format.
type ConfigFromOptions func(options map[string]string) (config map[string]interface{}, err error)
// Register is used to register an internal plugin.
func Register(id loader.PluginID, config *loader.InternalPluginConfig) {
mu.Lock()
defer mu.Unlock()
catalog[id] = &Registration{
Config: config,
}
}
// RegisterDeferredConfig is used to register an internal plugin that sets its
// config using the client's option map.
func RegisterDeferredConfig(id loader.PluginID, config *loader.InternalPluginConfig, configLoader ConfigFromOptions) {
mu.Lock()
defer mu.Unlock()
catalog[id] = &Registration{
Config: config,
ConfigLoader: configLoader,
}
}
// Catalog returns the catalog of internal plugins
func Catalog() map[loader.PluginID]*Registration {
mu.Lock()
defer mu.Unlock()
return catalog
}