mirror of https://github.com/status-im/consul.git
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
package resource
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/hashicorp/consul/proto-public/pbresource"
|
|
)
|
|
|
|
type Registry interface {
|
|
// Register the given resource type and its hooks.
|
|
Register(reg Registration)
|
|
|
|
// Resolve the given resource type and its hooks.
|
|
Resolve(typ *pbresource.Type) (reg Registration, ok bool)
|
|
}
|
|
|
|
type Registration struct {
|
|
// Type is the GVK of the resource type.
|
|
Type *pbresource.Type
|
|
|
|
// In the future, we'll add hooks, the controller etc. here.
|
|
// TODO: https://github.com/hashicorp/consul/pull/16622#discussion_r1134515909
|
|
}
|
|
|
|
// Hashable key for a resource type
|
|
type TypeKey string
|
|
|
|
// Resource type registry
|
|
type TypeRegistry struct {
|
|
// registrations keyed by GVK
|
|
registrations map[string]Registration
|
|
lock sync.RWMutex
|
|
}
|
|
|
|
func NewRegistry() Registry {
|
|
return &TypeRegistry{
|
|
registrations: make(map[string]Registration),
|
|
}
|
|
}
|
|
|
|
func (r *TypeRegistry) Register(registration Registration) {
|
|
r.lock.Lock()
|
|
defer r.lock.Unlock()
|
|
|
|
typ := registration.Type
|
|
if typ.Group == "" || typ.GroupVersion == "" || typ.Kind == "" {
|
|
panic("type field(s) cannot be empty")
|
|
}
|
|
|
|
key := ToGVK(registration.Type)
|
|
if _, ok := r.registrations[key]; ok {
|
|
panic(fmt.Sprintf("resource type %s already registered", key))
|
|
}
|
|
|
|
r.registrations[key] = registration
|
|
}
|
|
|
|
func (r *TypeRegistry) Resolve(typ *pbresource.Type) (reg Registration, ok bool) {
|
|
r.lock.RLock()
|
|
defer r.lock.RUnlock()
|
|
|
|
if registration, ok := r.registrations[ToGVK(typ)]; ok {
|
|
return registration, true
|
|
}
|
|
return Registration{}, false
|
|
}
|
|
|
|
func ToGVK(resourceType *pbresource.Type) string {
|
|
return fmt.Sprintf("%s/%s/%s", resourceType.Group, resourceType.GroupVersion, resourceType.Kind)
|
|
}
|