utils.go

Documentation: k8s.io/kubernetes/pkg/controller/nodeipam/ipam/test

     1  /*
     2  Copyright 2017 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 test
    18  
    19  import (
    20  	"net"
    21  	"time"
    22  
    23  	"k8s.io/apimachinery/pkg/util/wait"
    24  	"k8s.io/client-go/informers"
    25  	coreinformers "k8s.io/client-go/informers/core/v1"
    26  	"k8s.io/client-go/kubernetes/fake"
    27  	"k8s.io/kubernetes/pkg/controller"
    28  	"k8s.io/kubernetes/pkg/controller/testutil"
    29  	netutils "k8s.io/utils/net"
    30  )
    31  
    32  const NodePollInterval = 10 * time.Millisecond
    33  
    34  var AlwaysReady = func() bool { return true }
    35  
    36  // MustParseCIDR returns the CIDR range parsed from s or panics if the string
    37  // cannot be parsed.
    38  func MustParseCIDR(s string) *net.IPNet {
    39  	_, ret, err := netutils.ParseCIDRSloppy(s)
    40  	if err != nil {
    41  		panic(err)
    42  	}
    43  	return ret
    44  }
    45  
    46  // FakeNodeInformer creates a fakeNodeInformer using the provided fakeNodeHandler.
    47  func FakeNodeInformer(fakeNodeHandler *testutil.FakeNodeHandler) coreinformers.NodeInformer {
    48  	fakeClient := &fake.Clientset{}
    49  	fakeInformerFactory := informers.NewSharedInformerFactory(fakeClient, controller.NoResyncPeriodFunc())
    50  	fakeNodeInformer := fakeInformerFactory.Core().V1().Nodes()
    51  
    52  	for _, node := range fakeNodeHandler.Existing {
    53  		fakeNodeInformer.Informer().GetStore().Add(node)
    54  	}
    55  
    56  	return fakeNodeInformer
    57  }
    58  
    59  func WaitForUpdatedNodeWithTimeout(nodeHandler *testutil.FakeNodeHandler, number int, timeout time.Duration) error {
    60  	return wait.Poll(NodePollInterval, timeout, func() (bool, error) {
    61  		if len(nodeHandler.GetUpdatedNodesCopy()) >= number {
    62  			return true, nil
    63  		}
    64  		return false, nil
    65  	})
    66  }
    67
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