namespace_controller.go

Documentation: k8s.io/kubernetes/test/e2e_node/services

     1  /*
     2  Copyright 2016 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package services
    18  
    19  import (
    20  	"context"
    21  	"time"
    22  
    23  	v1 "k8s.io/api/core/v1"
    24  	"k8s.io/client-go/informers"
    25  	clientset "k8s.io/client-go/kubernetes"
    26  	"k8s.io/client-go/metadata"
    27  	restclient "k8s.io/client-go/rest"
    28  	namespacecontroller "k8s.io/kubernetes/pkg/controller/namespace"
    29  	"k8s.io/kubernetes/test/e2e/framework"
    30  )
    31  
    32  const (
    33  	// ncName is the name of namespace controller
    34  	ncName = "namespace-controller"
    35  	// ncResyncPeriod is resync period of the namespace controller
    36  	ncResyncPeriod = 5 * time.Minute
    37  	// ncConcurrency is concurrency of the namespace controller
    38  	ncConcurrency = 2
    39  )
    40  
    41  // NamespaceController is a server which manages namespace controller.
    42  type NamespaceController struct {
    43  	host   string
    44  	stopCh chan struct{}
    45  }
    46  
    47  // NewNamespaceController creates a new namespace controller.
    48  func NewNamespaceController(host string) *NamespaceController {
    49  	return &NamespaceController{host: host, stopCh: make(chan struct{})}
    50  }
    51  
    52  // Start starts the namespace controller.
    53  func (n *NamespaceController) Start(ctx context.Context) error {
    54  	config := restclient.AddUserAgent(&restclient.Config{
    55  		Host:        n.host,
    56  		BearerToken: framework.TestContext.BearerToken,
    57  		TLSClientConfig: restclient.TLSClientConfig{
    58  			Insecure: true,
    59  		},
    60  	}, ncName)
    61  
    62  	// the namespace cleanup controller is very chatty.  It makes lots of discovery calls and then it makes lots of delete calls.
    63  	config.QPS = 50
    64  	config.Burst = 200
    65  
    66  	client, err := clientset.NewForConfig(config)
    67  	if err != nil {
    68  		return err
    69  	}
    70  	metadataClient, err := metadata.NewForConfig(config)
    71  	if err != nil {
    72  		return err
    73  	}
    74  	discoverResourcesFn := client.Discovery().ServerPreferredNamespacedResources
    75  	informerFactory := informers.NewSharedInformerFactory(client, ncResyncPeriod)
    76  
    77  	nc := namespacecontroller.NewNamespaceController(
    78  		ctx,
    79  		client,
    80  		metadataClient,
    81  		discoverResourcesFn,
    82  		informerFactory.Core().V1().Namespaces(),
    83  		ncResyncPeriod, v1.FinalizerKubernetes,
    84  	)
    85  	informerFactory.Start(n.stopCh)
    86  	go nc.Run(ctx, ncConcurrency)
    87  	return nil
    88  }
    89  
    90  // Stop stops the namespace controller.
    91  func (n *NamespaceController) Stop() error {
    92  	close(n.stopCh)
    93  	return nil
    94  }
    95  
    96  // Name returns the name of namespace controller.
    97  func (n *NamespaceController) Name() string {
    98  	return ncName
    99  }
   100
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