kubernetes cloud_request_manager_test 源码
kubernetes cloud_request_manager_test 代码
文件路径:/pkg/kubelet/cloudresource/cloud_request_manager_test.go
/*
Copyright 2018 The Kubernetes Authors.
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 cloudresource
import (
"errors"
"reflect"
"testing"
"time"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/diff"
"k8s.io/cloud-provider/fake"
)
func createNodeInternalIPAddress(address string) []v1.NodeAddress {
return []v1.NodeAddress{
{
Type: v1.NodeInternalIP,
Address: address,
},
}
}
func TestNodeAddressesDelay(t *testing.T) {
syncPeriod := 100 * time.Millisecond
cloud := &fake.Cloud{
Addresses: createNodeInternalIPAddress("10.0.1.12"),
// Set the request delay so the manager timeouts and collects the node addresses later
RequestDelay: 200 * time.Millisecond,
}
stopCh := make(chan struct{})
defer close(stopCh)
manager := NewSyncManager(cloud, "defaultNode", syncPeriod).(*cloudResourceSyncManager)
go manager.Run(stopCh)
nodeAddresses, err := manager.NodeAddresses()
if err != nil {
t.Errorf("Unexpected err: %q\n", err)
}
if !reflect.DeepEqual(nodeAddresses, cloud.Addresses) {
t.Errorf("Unexpected diff of node addresses: %v", diff.ObjectReflectDiff(nodeAddresses, cloud.Addresses))
}
// Change the IP address
cloud.SetNodeAddresses(createNodeInternalIPAddress("10.0.1.13"))
// Wait until the IP address changes
maxRetry := 5
for i := 0; i < maxRetry; i++ {
nodeAddresses, err := manager.NodeAddresses()
t.Logf("nodeAddresses: %#v, err: %v", nodeAddresses, err)
if err != nil {
t.Errorf("Unexpected err: %q\n", err)
}
// It is safe to read cloud.Addresses since no routine is changing the value at the same time
if err == nil && nodeAddresses[0].Address != cloud.Addresses[0].Address {
time.Sleep(syncPeriod)
continue
}
if err != nil {
t.Errorf("Unexpected err: %q\n", err)
}
return
}
t.Errorf("Timeout waiting for %q address to appear", cloud.Addresses[0].Address)
}
func TestNodeAddressesUsesLastSuccess(t *testing.T) {
cloud := &fake.Cloud{}
manager := NewSyncManager(cloud, "defaultNode", 0).(*cloudResourceSyncManager)
// These tests are stateful and order dependent.
tests := []struct {
name string
addrs []v1.NodeAddress
err error
wantAddrs []v1.NodeAddress
wantErr bool
}{
{
name: "first sync loop encounters an error",
err: errors.New("bad"),
wantErr: true,
},
{
name: "subsequent sync loop succeeds",
addrs: createNodeInternalIPAddress("10.0.1.12"),
wantAddrs: createNodeInternalIPAddress("10.0.1.12"),
},
{
name: "subsequent sync loop encounters an error, last addresses returned",
err: errors.New("bad"),
wantAddrs: createNodeInternalIPAddress("10.0.1.12"),
},
{
name: "subsequent sync loop succeeds changing addresses",
addrs: createNodeInternalIPAddress("10.0.1.13"),
wantAddrs: createNodeInternalIPAddress("10.0.1.13"),
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
cloud.Addresses = test.addrs
cloud.Err = test.err
manager.syncNodeAddresses()
nodeAddresses, err := manager.NodeAddresses()
if (err != nil) != test.wantErr {
t.Errorf("unexpected err: %v", err)
}
if got, want := nodeAddresses, test.wantAddrs; !reflect.DeepEqual(got, want) {
t.Errorf("Unexpected diff of node addresses: %v", diff.ObjectReflectDiff(got, want))
}
})
}
}
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