mirror of https://github.com/helm/helm.git
83 lines
2.7 KiB
Go
83 lines
2.7 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors All rights reserved.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package driver // import "k8s.io/helm/pkg/storage/driver"
|
|
|
|
import (
|
|
"github.com/pkg/errors"
|
|
|
|
rspb "k8s.io/helm/pkg/hapi/release"
|
|
)
|
|
|
|
var (
|
|
// ErrReleaseNotFound indicates that a release is not found.
|
|
ErrReleaseNotFound = func(release string) error { return errors.Errorf("release: %q not found", release) }
|
|
// ErrReleaseExists indicates that a release already exists.
|
|
ErrReleaseExists = func(release string) error { return errors.Errorf("release: %q already exists", release) }
|
|
// ErrInvalidKey indicates that a release key could not be parsed.
|
|
ErrInvalidKey = func(release string) error { return errors.Errorf("release: %q invalid key", release) }
|
|
)
|
|
|
|
// Creator is the interface that wraps the Create method.
|
|
//
|
|
// Create stores the release or returns ErrReleaseExists
|
|
// if an identical release already exists.
|
|
type Creator interface {
|
|
Create(key string, rls *rspb.Release) error
|
|
}
|
|
|
|
// Updator is the interface that wraps the Update method.
|
|
//
|
|
// Update updates an existing release or returns
|
|
// ErrReleaseNotFound if the release does not exist.
|
|
type Updator interface {
|
|
Update(key string, rls *rspb.Release) error
|
|
}
|
|
|
|
// Deletor is the interface that wraps the Delete method.
|
|
//
|
|
// Delete deletes the release named by key or returns
|
|
// ErrReleaseNotFound if the release does not exist.
|
|
type Deletor interface {
|
|
Delete(key string) (*rspb.Release, error)
|
|
}
|
|
|
|
// Queryor is the interface that wraps the Get and List methods.
|
|
//
|
|
// Get returns the release named by key or returns ErrReleaseNotFound
|
|
// if the release does not exist.
|
|
//
|
|
// List returns the set of all releases that satisfy the filter predicate.
|
|
//
|
|
// Query returns the set of all releases that match the provided label set.
|
|
type Queryor interface {
|
|
Get(key string) (*rspb.Release, error)
|
|
List(filter func(*rspb.Release) bool) ([]*rspb.Release, error)
|
|
Query(labels map[string]string) ([]*rspb.Release, error)
|
|
}
|
|
|
|
// Driver is the interface composed of Creator, Updator, Deletor, and Queryor
|
|
// interfaces. It defines the behavior for storing, updating, deleted,
|
|
// and retrieving Tiller releases from some underlying storage mechanism,
|
|
// e.g. memory, configmaps.
|
|
type Driver interface {
|
|
Creator
|
|
Updator
|
|
Deletor
|
|
Queryor
|
|
Name() string
|
|
}
|