94 lines
3.3 KiB
Go
94 lines
3.3 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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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 factory
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import (
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"context"
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"fmt"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apiserver/pkg/storage"
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"k8s.io/apiserver/pkg/storage/etcd3/metrics"
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"k8s.io/apiserver/pkg/storage/storagebackend"
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)
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// DestroyFunc is to destroy any resources used by the storage returned in Create() together.
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type DestroyFunc func()
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// Create creates a storage backend based on given config.
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func Create(c storagebackend.ConfigForResource, newFunc, newListFunc func() runtime.Object, resourcePrefix string) (storage.Interface, DestroyFunc, error) {
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switch c.Type {
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case storagebackend.StorageTypeETCD2:
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return nil, nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)
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case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
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return newETCD3Storage(c, newFunc, newListFunc, resourcePrefix)
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default:
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return nil, nil, fmt.Errorf("unknown storage type: %s", c.Type)
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}
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}
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// CreateHealthCheck creates a healthcheck function based on given config.
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func CreateHealthCheck(c storagebackend.Config, stopCh <-chan struct{}) (func() error, error) {
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switch c.Type {
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case storagebackend.StorageTypeETCD2:
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return nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)
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case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
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return newETCD3HealthCheck(c, stopCh)
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default:
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return nil, fmt.Errorf("unknown storage type: %s", c.Type)
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}
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}
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func CreateReadyCheck(c storagebackend.Config, stopCh <-chan struct{}) (func() error, error) {
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switch c.Type {
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case storagebackend.StorageTypeETCD2:
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return nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)
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case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
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return newETCD3ReadyCheck(c, stopCh)
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default:
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return nil, fmt.Errorf("unknown storage type: %s", c.Type)
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}
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}
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func CreateProber(c storagebackend.Config) (Prober, error) {
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switch c.Type {
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case storagebackend.StorageTypeETCD2:
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return nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)
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case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
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return newETCD3ProberMonitor(c)
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default:
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return nil, fmt.Errorf("unknown storage type: %s", c.Type)
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}
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}
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func CreateMonitor(c storagebackend.Config) (metrics.Monitor, error) {
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switch c.Type {
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case storagebackend.StorageTypeETCD2:
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return nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)
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case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
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return newETCD3ProberMonitor(c)
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default:
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return nil, fmt.Errorf("unknown storage type: %s", c.Type)
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}
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}
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// Prober is an interface that defines the Probe function for doing etcd readiness/liveness checks.
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type Prober interface {
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Probe(ctx context.Context) error
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Close() error
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}
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