mirror of https://github.com/k3s-io/k3s
115 lines
3.7 KiB
Go
115 lines
3.7 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package service
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import (
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"fmt"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/rest"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/watch"
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)
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// Registry is an interface for things that know how to store services.
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type Registry interface {
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ListServices(ctx api.Context, options *api.ListOptions) (*api.ServiceList, error)
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CreateService(ctx api.Context, svc *api.Service) (*api.Service, error)
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GetService(ctx api.Context, name string) (*api.Service, error)
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DeleteService(ctx api.Context, name string) error
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UpdateService(ctx api.Context, svc *api.Service) (*api.Service, error)
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WatchServices(ctx api.Context, options *api.ListOptions) (watch.Interface, error)
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ExportService(ctx api.Context, name string, options unversioned.ExportOptions) (*api.Service, error)
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}
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// storage puts strong typing around storage calls
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type storage struct {
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rest.StandardStorage
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}
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// NewRegistry returns a new Registry interface for the given Storage. Any mismatched
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// types will panic.
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func NewRegistry(s rest.StandardStorage) Registry {
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return &storage{s}
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}
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func (s *storage) ListServices(ctx api.Context, options *api.ListOptions) (*api.ServiceList, error) {
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obj, err := s.List(ctx, options)
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if err != nil {
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return nil, err
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}
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return obj.(*api.ServiceList), nil
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}
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func (s *storage) CreateService(ctx api.Context, svc *api.Service) (*api.Service, error) {
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obj, err := s.Create(ctx, svc)
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if err != nil {
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return nil, err
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}
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return obj.(*api.Service), nil
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}
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func (s *storage) GetService(ctx api.Context, name string) (*api.Service, error) {
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obj, err := s.Get(ctx, name)
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if err != nil {
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return nil, err
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}
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return obj.(*api.Service), nil
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}
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func (s *storage) DeleteService(ctx api.Context, name string) error {
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_, err := s.Delete(ctx, name, nil)
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return err
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}
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func (s *storage) UpdateService(ctx api.Context, svc *api.Service) (*api.Service, error) {
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obj, _, err := s.Update(ctx, svc)
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if err != nil {
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return nil, err
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}
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return obj.(*api.Service), nil
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}
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func (s *storage) WatchServices(ctx api.Context, options *api.ListOptions) (watch.Interface, error) {
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return s.Watch(ctx, options)
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}
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// If StandardStorage implements rest.Exporter, returns exported service.
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// Otherwise export is not supported.
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func (s *storage) ExportService(ctx api.Context, name string, options unversioned.ExportOptions) (*api.Service, error) {
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exporter, isExporter := s.StandardStorage.(rest.Exporter)
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if !isExporter {
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return nil, fmt.Errorf("export is not supported")
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}
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obj, err := exporter.Export(ctx, name, options)
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if err != nil {
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return nil, err
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}
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return obj.(*api.Service), nil
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}
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// TODO: Move to a general location (as other components may need allocation in future; it's not service specific)
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// RangeRegistry is a registry that can retrieve or persist a RangeAllocation object.
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type RangeRegistry interface {
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// Get returns the latest allocation, an empty object if no allocation has been made,
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// or an error if the allocation could not be retrieved.
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Get() (*api.RangeAllocation, error)
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// CreateOrUpdate should create or update the provide allocation, unless a conflict
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// has occurred since the item was last created.
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CreateOrUpdate(*api.RangeAllocation) error
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}
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