80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package resource
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import (
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"fmt"
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"sync"
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"google.golang.org/protobuf/proto"
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"github.com/hashicorp/consul/proto-public/pbresource"
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)
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type Registry interface {
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// Register the given resource type and its hooks.
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Register(reg Registration)
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// Resolve the given resource type and its hooks.
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Resolve(typ *pbresource.Type) (reg Registration, ok bool)
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}
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type Registration struct {
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// Type is the GVK of the resource type.
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Type *pbresource.Type
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// Proto is the resource's protobuf message type.
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Proto proto.Message
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// In the future, we'll add hooks, the controller etc. here.
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// TODO: https://github.com/hashicorp/consul/pull/16622#discussion_r1134515909
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}
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// Hashable key for a resource type
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type TypeKey string
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// Resource type registry
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type TypeRegistry struct {
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// registrations keyed by GVK
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registrations map[string]Registration
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lock sync.RWMutex
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}
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func NewRegistry() Registry {
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return &TypeRegistry{
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registrations: make(map[string]Registration),
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}
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}
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func (r *TypeRegistry) Register(registration Registration) {
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r.lock.Lock()
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defer r.lock.Unlock()
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typ := registration.Type
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if typ.Group == "" || typ.GroupVersion == "" || typ.Kind == "" {
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panic("type field(s) cannot be empty")
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}
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key := ToGVK(registration.Type)
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if _, ok := r.registrations[key]; ok {
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panic(fmt.Sprintf("resource type %s already registered", key))
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}
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r.registrations[key] = registration
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}
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func (r *TypeRegistry) Resolve(typ *pbresource.Type) (reg Registration, ok bool) {
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r.lock.RLock()
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defer r.lock.RUnlock()
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if registration, ok := r.registrations[ToGVK(typ)]; ok {
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return registration, true
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}
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return Registration{}, false
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}
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func ToGVK(resourceType *pbresource.Type) string {
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return fmt.Sprintf("%s/%s/%s", resourceType.Group, resourceType.GroupVersion, resourceType.Kind)
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}
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