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https://github.com/k3s-io/kubernetes.git
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100 lines
2.8 KiB
Go
100 lines
2.8 KiB
Go
/*
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Copyright 2018 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 cloudresource
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import (
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"fmt"
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"reflect"
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"testing"
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"time"
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"k8s.io/api/core/v1"
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"k8s.io/kubernetes/pkg/cloudprovider/providers/fake"
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)
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func collectNodeAddresses(manager *cloudResourceSyncManager) ([]v1.NodeAddress, error) {
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var nodeAddresses []v1.NodeAddress
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var err error
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collected := make(chan struct{}, 1)
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go func() {
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nodeAddresses, err = manager.NodeAddresses()
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close(collected)
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}()
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select {
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case <-collected:
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return nodeAddresses, err
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case <-time.Tick(2 * nodeAddressesRetryPeriod):
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return nil, fmt.Errorf("Timeout after %v waiting for address to appear", 2*nodeAddressesRetryPeriod)
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}
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}
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func createNodeInternalIPAddress(address string) []v1.NodeAddress {
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return []v1.NodeAddress{
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{
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Type: v1.NodeInternalIP,
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Address: address,
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},
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}
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}
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func TestNodeAddressesRequest(t *testing.T) {
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syncPeriod := 300 * time.Millisecond
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maxRetry := 5
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cloud := &fake.FakeCloud{
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Addresses: createNodeInternalIPAddress("10.0.1.12"),
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// Set the request delay so the manager timeouts and collects the node addresses later
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RequestDelay: 400 * time.Millisecond,
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}
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stopCh := make(chan struct{})
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defer close(stopCh)
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manager := NewSyncManager(cloud, "defaultNode", syncPeriod).(*cloudResourceSyncManager)
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go manager.Run(stopCh)
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nodeAddresses, err := collectNodeAddresses(manager)
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if err != nil {
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t.Errorf("Unexpected err: %q\n", err)
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}
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if !reflect.DeepEqual(nodeAddresses, cloud.Addresses) {
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t.Errorf("Unexpected list of node addresses %#v, expected %#v: %v", nodeAddresses, cloud.Addresses, err)
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}
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// Change the IP address
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cloud.SetNodeAddresses(createNodeInternalIPAddress("10.0.1.13"))
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// Wait until the IP address changes
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for i := 0; i < maxRetry; i++ {
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nodeAddresses, err := collectNodeAddresses(manager)
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t.Logf("nodeAddresses: %#v, err: %v", nodeAddresses, err)
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if err != nil {
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t.Errorf("Unexpected err: %q\n", err)
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}
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// It is safe to read cloud.Addresses since no routine is changing the value at the same time
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if err == nil && nodeAddresses[0].Address != cloud.Addresses[0].Address {
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time.Sleep(100 * time.Millisecond)
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continue
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}
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if err != nil {
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t.Errorf("Unexpected err: %q\n", err)
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}
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return
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}
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t.Errorf("Timeout waiting for %q address to appear", cloud.Addresses[0].Address)
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}
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