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67 lines
2.9 KiB
Go
67 lines
2.9 KiB
Go
/*
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Copyright 2014 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 util
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import (
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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"k8s.io/cli-runtime/pkg/genericclioptions/resource"
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"k8s.io/client-go/dynamic"
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"k8s.io/client-go/kubernetes"
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restclient "k8s.io/client-go/rest"
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"k8s.io/kubernetes/pkg/kubectl/cmd/util/openapi"
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"k8s.io/kubernetes/pkg/kubectl/validation"
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)
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// Factory provides abstractions that allow the Kubectl command to be extended across multiple types
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// of resources and different API sets.
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// The rings are here for a reason. In order for composers to be able to provide alternative factory implementations
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// they need to provide low level pieces of *certain* functions so that when the factory calls back into itself
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// it uses the custom version of the function. Rather than try to enumerate everything that someone would want to override
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// we split the factory into rings, where each ring can depend on methods in an earlier ring, but cannot depend
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// upon peer methods in its own ring.
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// TODO: make the functions interfaces
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// TODO: pass the various interfaces on the factory directly into the command constructors (so the
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// commands are decoupled from the factory).
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type Factory interface {
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genericclioptions.RESTClientGetter
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// DynamicClient returns a dynamic client ready for use
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DynamicClient() (dynamic.Interface, error)
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// KubernetesClientSet gives you back an external clientset
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KubernetesClientSet() (*kubernetes.Clientset, error)
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// Returns a RESTClient for accessing Kubernetes resources or an error.
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RESTClient() (*restclient.RESTClient, error)
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// NewBuilder returns an object that assists in loading objects from both disk and the server
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// and which implements the common patterns for CLI interactions with generic resources.
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NewBuilder() *resource.Builder
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// Returns a RESTClient for working with the specified RESTMapping or an error. This is intended
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// for working with arbitrary resources and is not guaranteed to point to a Kubernetes APIServer.
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ClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error)
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// Returns a RESTClient for working with Unstructured objects.
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UnstructuredClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error)
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// Returns a schema that can validate objects stored on disk.
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Validator(validate bool) (validation.Schema, error)
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// OpenAPISchema returns the schema openapi schema definition
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OpenAPISchema() (openapi.Resources, error)
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}
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