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Merge pull request #46470 from shyamjvs/configmap-interface

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Automatic merge from submit-queue

Migrate kubelet to ConfigMapManager interface and use TTL-based caching manager

Fixes #41379
Sometime ago we moved to a secret manager interface for kubelet to manage secrets.
This PR's first commit moves config map management also to a similar interface.
The second commit adds TTL-based CachingConfigMapManager (similar to CachingSecretManager) and makes kubelet use it.

/cc @kubernetes/sig-node-pr-reviews @kubernetes/sig-scalability-misc @wojtek-t @dchen1107
This commit is contained in:
Kubernetes Submit Queue 2017-06-01 01:53:34 -07:00 committed by GitHub
commit c13d8917c2
30 changed files with 1127 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
pkg/api/v1/pod/util.go
View File

@ -197,6 +197,60 @@ func visitContainerSecretNames(container *v1.Container, visitor Visitor) bool {
return true
}
// VisitPodConfigmapNames invokes the visitor function with the name of every configmap
// referenced by the pod spec. If visitor returns false, visiting is short-circuited.
// Transitive references (e.g. pod -> pvc -> pv -> secret) are not visited.
// Returns true if visiting completed, false if visiting was short-circuited.
func VisitPodConfigmapNames(pod *v1.Pod, visitor Visitor) bool {
for i := range pod.Spec.InitContainers {
if !visitContainerConfigmapNames(&pod.Spec.InitContainers[i], visitor) {
return false
}
}
for i := range pod.Spec.Containers {
if !visitContainerConfigmapNames(&pod.Spec.Containers[i], visitor) {
return false
}
}
var source *v1.VolumeSource
for i := range pod.Spec.Volumes {
source = &pod.Spec.Volumes[i].VolumeSource
switch {
case source.Projected != nil:
for j := range source.Projected.Sources {
if source.Projected.Sources[j].ConfigMap != nil {
if !visitor(source.Projected.Sources[j].ConfigMap.Name) {
return false
}
}
}
case source.ConfigMap != nil:
if !visitor(source.ConfigMap.Name) {
return false
}
}
}
return true
}
func visitContainerConfigmapNames(container *v1.Container, visitor Visitor) bool {
for _, env := range container.EnvFrom {
if env.ConfigMapRef != nil {
if !visitor(env.ConfigMapRef.Name) {
return false
}
}
}
for _, envVar := range container.Env {
if envVar.ValueFrom != nil && envVar.ValueFrom.ConfigMapKeyRef != nil {
if !visitor(envVar.ValueFrom.ConfigMapKeyRef.Name) {
return false
}
}
}
return true
}
// GetContainerStatus extracts the status of container "name" from "statuses".
// It also returns if "name" exists.
func GetContainerStatus(statuses []v1.ContainerStatus, name string) (v1.ContainerStatus, bool) {

6
pkg/controller/volume/attachdetach/attach_detach_controller.go
View File

@ -552,6 +552,12 @@ func (adc *attachDetachController) GetSecretFunc() func(namespace, name string)
}
}
func (adc *attachDetachController) GetConfigMapFunc() func(namespace, name string) (*v1.ConfigMap, error) {
return func(_, _ string) (*v1.ConfigMap, error) {
return nil, fmt.Errorf("GetConfigMap unsupported in attachDetachController")
}
}
func (adc *attachDetachController) addNodeToDswp(node *v1.Node, nodeName types.NodeName) {
if _, exists := node.Annotations[volumehelper.ControllerManagedAttachAnnotation]; exists {
keepTerminatedPodVolumes := false

6
pkg/controller/volume/persistentvolume/volume_host.go
View File

@ -87,6 +87,12 @@ func (adc *PersistentVolumeController) GetSecretFunc() func(namespace, name stri
}
}
func (adc *PersistentVolumeController) GetConfigMapFunc() func(namespace, name string) (*v1.ConfigMap, error) {
return func(_, _ string) (*v1.ConfigMap, error) {
return nil, fmt.Errorf("GetConfigMap unsupported in PersistentVolumeController")
}
}
func (ctrl *PersistentVolumeController) GetNodeLabels() (map[string]string, error) {
return nil, fmt.Errorf("GetNodeLabels() unsupported in PersistentVolumeController")
}

3
pkg/kubelet/BUILD
View File

@ -57,6 +57,7 @@ go_library(
"//pkg/kubelet/certificate:go_default_library",
"//pkg/kubelet/cm:go_default_library",
"//pkg/kubelet/config:go_default_library",
"//pkg/kubelet/configmap:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/dockershim:go_default_library",
"//pkg/kubelet/dockershim/libdocker:go_default_library",
@ -174,6 +175,7 @@ go_test(
"//pkg/kubelet/cadvisor/testing:go_default_library",
"//pkg/kubelet/cm:go_default_library",
"//pkg/kubelet/config:go_default_library",
"//pkg/kubelet/configmap:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/container/testing:go_default_library",
"//pkg/kubelet/eviction:go_default_library",
@ -249,6 +251,7 @@ filegroup(
"//pkg/kubelet/client:all-srcs",
"//pkg/kubelet/cm:all-srcs",
"//pkg/kubelet/config:all-srcs",
"//pkg/kubelet/configmap:all-srcs",
"//pkg/kubelet/container:all-srcs",
"//pkg/kubelet/custommetrics:all-srcs",
"//pkg/kubelet/dockershim:all-srcs",

59
pkg/kubelet/configmap/BUILD Normal file
View File

@ -0,0 +1,59 @@
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
"go_test",
)
go_library(
name = "go_default_library",
srcs = [
"configmap_manager.go",
"fake_manager.go",
],
tags = ["automanaged"],
deps = [
"//pkg/api/v1:go_default_library",
"//pkg/api/v1/pod:go_default_library",
"//pkg/client/clientset_generated/clientset:go_default_library",
"//pkg/kubelet/util:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/clock:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//vendor/k8s.io/apiserver/pkg/storage/etcd:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)
go_test(
name = "go_default_test",
srcs = ["configmap_manager_test.go"],
library = ":go_default_library",
tags = ["automanaged"],
deps = [
"//pkg/api/v1:go_default_library",
"//pkg/client/clientset_generated/clientset/fake:go_default_library",
"//vendor/github.com/stretchr/testify/assert:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/clock:go_default_library",
"//vendor/k8s.io/client-go/testing:go_default_library",
],
)

302
pkg/kubelet/configmap/configmap_manager.go Normal file
View File

@ -0,0 +1,302 @@
/*
Copyright 2017 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 configmap
import (
"fmt"
"strconv"
"sync"
"time"
storageetcd "k8s.io/apiserver/pkg/storage/etcd"
"k8s.io/kubernetes/pkg/api/v1"
podutil "k8s.io/kubernetes/pkg/api/v1/pod"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
"k8s.io/kubernetes/pkg/kubelet/util"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/clock"
"k8s.io/apimachinery/pkg/util/sets"
)
const (
defaultTTL = time.Minute
)
type Manager interface {
// Get configmap by configmap namespace and name.
GetConfigMap(namespace, name string) (*v1.ConfigMap, error)
// WARNING: Register/UnregisterPod functions should be efficient,
// i.e. should not block on network operations.
// RegisterPod registers all configmaps from a given pod.
RegisterPod(pod *v1.Pod)
// UnregisterPod unregisters configmaps from a given pod that are not
// used by any other registered pod.
UnregisterPod(pod *v1.Pod)
}
// simpleConfigMapManager implements ConfigMap Manager interface with
// simple operations to apiserver.
type simpleConfigMapManager struct {
kubeClient clientset.Interface
}
func NewSimpleConfigMapManager(kubeClient clientset.Interface) Manager {
return &simpleConfigMapManager{kubeClient: kubeClient}
}
func (s *simpleConfigMapManager) GetConfigMap(namespace, name string) (*v1.ConfigMap, error) {
return s.kubeClient.Core().ConfigMaps(namespace).Get(name, metav1.GetOptions{})
}
func (s *simpleConfigMapManager) RegisterPod(pod *v1.Pod) {
}
func (s *simpleConfigMapManager) UnregisterPod(pod *v1.Pod) {
}
type GetObjectTTLFunc func() (time.Duration, bool)
type objectKey struct {
namespace string
name string
}
// configMapStoreItems is a single item stored in configMapStore.
type configMapStoreItem struct {
refCount int
configMap *configMapData
}
type configMapData struct {
sync.Mutex
configMap *v1.ConfigMap
err error
lastUpdateTime time.Time
}
// configMapStore is a local cache of configmaps.
type configMapStore struct {
kubeClient clientset.Interface
clock clock.Clock
lock sync.Mutex
items map[objectKey]*configMapStoreItem
defaultTTL time.Duration
getTTL GetObjectTTLFunc
}
func newConfigMapStore(kubeClient clientset.Interface, clock clock.Clock, getTTL GetObjectTTLFunc, ttl time.Duration) *configMapStore {
return &configMapStore{
kubeClient: kubeClient,
clock: clock,
items: make(map[objectKey]*configMapStoreItem),
defaultTTL: ttl,
getTTL: getTTL,
}
}
func isConfigMapOlder(newConfigMap, oldConfigMap *v1.ConfigMap) bool {
if newConfigMap == nil || oldConfigMap == nil {
return false
}
newVersion, _ := storageetcd.Versioner.ObjectResourceVersion(newConfigMap)
oldVersion, _ := storageetcd.Versioner.ObjectResourceVersion(oldConfigMap)
return newVersion < oldVersion
}
func (s *configMapStore) Add(namespace, name string) {
key := objectKey{namespace: namespace, name: name}
// Add is called from RegisterPod, thus it needs to be efficient.
// Thus Add() is only increasing refCount and generation of a given configmap.
// Then Get() is responsible for fetching if needed.
s.lock.Lock()
defer s.lock.Unlock()
item, exists := s.items[key]
if !exists {
item = &configMapStoreItem{
refCount: 0,
configMap: &configMapData{},
}
s.items[key] = item
}
item.refCount++
// This will trigger fetch on the next Get() operation.
item.configMap = nil
}
func (s *configMapStore) Delete(namespace, name string) {
key := objectKey{namespace: namespace, name: name}
s.lock.Lock()
defer s.lock.Unlock()
if item, ok := s.items[key]; ok {
item.refCount--
if item.refCount == 0 {
delete(s.items, key)
}
}
}
func GetObjectTTLFromNodeFunc(getNode func() (*v1.Node, error)) GetObjectTTLFunc {
return func() (time.Duration, bool) {
node, err := getNode()
if err != nil {
return time.Duration(0), false
}
if node != nil && node.Annotations != nil {
if value, ok := node.Annotations[v1.ObjectTTLAnnotationKey]; ok {
if intValue, err := strconv.Atoi(value); err == nil {
return time.Duration(intValue) * time.Second, true
}
}
}
return time.Duration(0), false
}
}
func (s *configMapStore) isConfigMapFresh(data *configMapData) bool {
configMapTTL := s.defaultTTL
if ttl, ok := s.getTTL(); ok {
configMapTTL = ttl
}
return s.clock.Now().Before(data.lastUpdateTime.Add(configMapTTL))
}
func (s *configMapStore) Get(namespace, name string) (*v1.ConfigMap, error) {
key := objectKey{namespace: namespace, name: name}
data := func() *configMapData {
s.lock.Lock()
defer s.lock.Unlock()
item, exists := s.items[key]
if !exists {
return nil
}
if item.configMap == nil {
item.configMap = &configMapData{}
}
return item.configMap
}()
if data == nil {
return nil, fmt.Errorf("configmap %q/%q not registered", namespace, name)
}
// After updating data in configMapStore, lock the data, fetch configMap if
// needed and return data.
data.Lock()
defer data.Unlock()
if data.err != nil || !s.isConfigMapFresh(data) {
opts := metav1.GetOptions{}
if data.configMap != nil && data.err == nil {
// This is just a periodic refresh of a configmap we successfully fetched previously.
// In this case, server data from apiserver cache to reduce the load on both
// etcd and apiserver (the cache is eventually consistent).
util.FromApiserverCache(&opts)
}
configMap, err := s.kubeClient.Core().ConfigMaps(namespace).Get(name, opts)
if err != nil && !apierrors.IsNotFound(err) && data.configMap == nil && data.err == nil {
// Couldn't fetch the latest configmap, but there is no cached data to return.
// Return the fetch result instead.
return configMap, err
}
if (err == nil && !isConfigMapOlder(configMap, data.configMap)) || apierrors.IsNotFound(err) {
// If the fetch succeeded with a newer version of the configmap, or if the
// configmap could not be found in the apiserver, update the cached data to
// reflect the current status.
data.configMap = configMap
data.err = err
data.lastUpdateTime = s.clock.Now()
}
}
return data.configMap, data.err
}
// cachingConfigMapManager keeps a cache of all configmaps necessary for registered pods.
// It implements the following logic:
// - whenever a pod is created or updated, the cached versions of all its configmaps
// are invalidated
// - every GetConfigMap() call tries to fetch the value from local cache; if it is
// not there, invalidated or too old, we fetch it from apiserver and refresh the
// value in cache; otherwise it is just fetched from cache
type cachingConfigMapManager struct {
configMapStore *configMapStore
lock sync.Mutex
registeredPods map[objectKey]*v1.Pod
}
func NewCachingConfigMapManager(kubeClient clientset.Interface, getTTL GetObjectTTLFunc) Manager {
csm := &cachingConfigMapManager{
configMapStore: newConfigMapStore(kubeClient, clock.RealClock{}, getTTL, defaultTTL),
registeredPods: make(map[objectKey]*v1.Pod),
}
return csm
}
func (c *cachingConfigMapManager) GetConfigMap(namespace, name string) (*v1.ConfigMap, error) {
return c.configMapStore.Get(namespace, name)
}
func getConfigMapNames(pod *v1.Pod) sets.String {
result := sets.NewString()
podutil.VisitPodConfigmapNames(pod, func(name string) bool {
result.Insert(name)
return true
})
return result
}
func (c *cachingConfigMapManager) RegisterPod(pod *v1.Pod) {
names := getConfigMapNames(pod)
c.lock.Lock()
defer c.lock.Unlock()
for name := range names {
c.configMapStore.Add(pod.Namespace, name)
}
var prev *v1.Pod
key := objectKey{namespace: pod.Namespace, name: pod.Name}
prev = c.registeredPods[key]
c.registeredPods[key] = pod
if prev != nil {
for name := range getConfigMapNames(prev) {
c.configMapStore.Delete(prev.Namespace, name)
}
}
}
func (c *cachingConfigMapManager) UnregisterPod(pod *v1.Pod) {
var prev *v1.Pod
key := objectKey{namespace: pod.Namespace, name: pod.Name}
c.lock.Lock()
defer c.lock.Unlock()
prev = c.registeredPods[key]
delete(c.registeredPods, key)
if prev != nil {
for name := range getConfigMapNames(prev) {
c.configMapStore.Delete(prev.Namespace, name)
}
}
}

537
pkg/kubelet/configmap/configmap_manager_test.go Normal file
View File

@ -0,0 +1,537 @@
/*
Copyright 2017 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 configmap
import (
"fmt"
"reflect"
"strings"
"sync"
"testing"
"time"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/clock"
core "k8s.io/client-go/testing"
"github.com/stretchr/testify/assert"
)
func checkConfigMap(t *testing.T, store *configMapStore, ns, name string, shouldExist bool) {
_, err := store.Get(ns, name)
if shouldExist && err != nil {
t.Errorf("unexpected actions: %#v", err)
}
if !shouldExist && (err == nil || !strings.Contains(err.Error(), fmt.Sprintf("configmap %q/%q not registered", ns, name))) {
t.Errorf("unexpected actions: %#v", err)
}
}
func noObjectTTL() (time.Duration, bool) {
return time.Duration(0), false
}
func TestConfigMapStore(t *testing.T) {
fakeClient := &fake.Clientset{}
store := newConfigMapStore(fakeClient, clock.RealClock{}, noObjectTTL, 0)
store.Add("ns1", "name1")
store.Add("ns2", "name2")
store.Add("ns1", "name1")
store.Add("ns1", "name1")
store.Delete("ns1", "name1")
store.Delete("ns2", "name2")
store.Add("ns3", "name3")
// Adds don't issue Get requests.
actions := fakeClient.Actions()
assert.Equal(t, 0, len(actions), "unexpected actions: %#v", actions)
// Should issue Get request
store.Get("ns1", "name1")
// Shouldn't issue Get request, as configMap is not registered
store.Get("ns2", "name2")
// Should issue Get request
store.Get("ns3", "name3")
actions = fakeClient.Actions()
assert.Equal(t, 2, len(actions), "unexpected actions: %#v", actions)
for _, a := range actions {
assert.True(t, a.Matches("get", "configmaps"), "unexpected actions: %#v", a)
}
checkConfigMap(t, store, "ns1", "name1", true)
checkConfigMap(t, store, "ns2", "name2", false)
checkConfigMap(t, store, "ns3", "name3", true)
checkConfigMap(t, store, "ns4", "name4", false)
}
func TestConfigMapStoreDeletingConfigMap(t *testing.T) {
fakeClient := &fake.Clientset{}
store := newConfigMapStore(fakeClient, clock.RealClock{}, noObjectTTL, 0)
store.Add("ns", "name")
result := &v1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Namespace: "ns", Name: "name", ResourceVersion: "10"}}
fakeClient.AddReactor("get", "configmaps", func(action core.Action) (bool, runtime.Object, error) {
return true, result, nil
})
configMap, err := store.Get("ns", "name")
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
if !reflect.DeepEqual(configMap, result) {
t.Errorf("Unexpected configMap: %v", configMap)
}
fakeClient.PrependReactor("get", "configmaps", func(action core.Action) (bool, runtime.Object, error) {
return true, &v1.ConfigMap{}, apierrors.NewNotFound(v1.Resource("configMap"), "name")
})
configMap, err = store.Get("ns", "name")
if err == nil || !apierrors.IsNotFound(err) {
t.Errorf("Unexpected error: %v", err)
}
if !reflect.DeepEqual(configMap, &v1.ConfigMap{}) {
t.Errorf("Unexpected configMap: %v", configMap)
}
}
func TestConfigMapStoreGetAlwaysRefresh(t *testing.T) {
fakeClient := &fake.Clientset{}
fakeClock := clock.NewFakeClock(time.Now())
store := newConfigMapStore(fakeClient, fakeClock, noObjectTTL, 0)
for i := 0; i < 10; i++ {
store.Add(fmt.Sprintf("ns-%d", i), fmt.Sprintf("name-%d", i))
}
fakeClient.ClearActions()
wg := sync.WaitGroup{}
wg.Add(100)
for i := 0; i < 100; i++ {
go func(i int) {
store.Get(fmt.Sprintf("ns-%d", i%10), fmt.Sprintf("name-%d", i%10))
wg.Done()
}(i)
}
wg.Wait()
actions := fakeClient.Actions()
assert.Equal(t, 100, len(actions), "unexpected actions: %#v", actions)
for _, a := range actions {
assert.True(t, a.Matches("get", "configmaps"), "unexpected actions: %#v", a)
}
}
func TestConfigMapStoreGetNeverRefresh(t *testing.T) {
fakeClient := &fake.Clientset{}
fakeClock := clock.NewFakeClock(time.Now())
store := newConfigMapStore(fakeClient, fakeClock, noObjectTTL, time.Minute)
for i := 0; i < 10; i++ {
store.Add(fmt.Sprintf("ns-%d", i), fmt.Sprintf("name-%d", i))
}
fakeClient.ClearActions()
wg := sync.WaitGroup{}
wg.Add(100)
for i := 0; i < 100; i++ {
go func(i int) {
store.Get(fmt.Sprintf("ns-%d", i%10), fmt.Sprintf("name-%d", i%10))
wg.Done()
}(i)
}
wg.Wait()
actions := fakeClient.Actions()
// Only first Get, should forward the Get request.
assert.Equal(t, 10, len(actions), "unexpected actions: %#v", actions)
}
func TestCustomTTL(t *testing.T) {
ttl := time.Duration(0)
ttlExists := false
customTTL := func() (time.Duration, bool) {
return ttl, ttlExists
}
fakeClient := &fake.Clientset{}
fakeClock := clock.NewFakeClock(time.Time{})
store := newConfigMapStore(fakeClient, fakeClock, customTTL, time.Minute)
store.Add("ns", "name")
store.Get("ns", "name")
fakeClient.ClearActions()
// Set 0-ttl and see if that works.
ttl = time.Duration(0)
ttlExists = true
store.Get("ns", "name")
actions := fakeClient.Actions()
assert.Equal(t, 1, len(actions), "unexpected actions: %#v", actions)
fakeClient.ClearActions()
// Set 5-minute ttl and see if this works.
ttl = time.Duration(5) * time.Minute
store.Get("ns", "name")
actions = fakeClient.Actions()
assert.Equal(t, 0, len(actions), "unexpected actions: %#v", actions)
// Still no effect after 4 minutes.
fakeClock.Step(4 * time.Minute)
store.Get("ns", "name")
actions = fakeClient.Actions()
assert.Equal(t, 0, len(actions), "unexpected actions: %#v", actions)
// Now it should have an effect.
fakeClock.Step(time.Minute)
store.Get("ns", "name")
actions = fakeClient.Actions()
assert.Equal(t, 1, len(actions), "unexpected actions: %#v", actions)
fakeClient.ClearActions()
// Now remove the custom ttl and see if that works.
ttlExists = false
fakeClock.Step(55 * time.Second)
store.Get("ns", "name")
actions = fakeClient.Actions()
assert.Equal(t, 0, len(actions), "unexpected actions: %#v", actions)
// Pass the minute and it should be triggered now.
fakeClock.Step(5 * time.Second)
store.Get("ns", "name")
actions = fakeClient.Actions()
assert.Equal(t, 1, len(actions), "unexpected actions: %#v", actions)
}
func TestParseNodeAnnotation(t *testing.T) {
testCases := []struct {
node *v1.Node
err error
exists bool
ttl time.Duration
}{
{
node: nil,
err: fmt.Errorf("error"),
exists: false,
},
{
node: &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
},
},
exists: false,
},
{
node: &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{},
},
},
exists: false,
},
{
node: &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{v1.ObjectTTLAnnotationKey: "bad"},
},
},
exists: false,
},
{
node: &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{v1.ObjectTTLAnnotationKey: "0"},
},
},
exists: true,
ttl: time.Duration(0),
},
{
node: &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{v1.ObjectTTLAnnotationKey: "60"},
},
},
exists: true,
ttl: time.Minute,
},
}
for i, testCase := range testCases {
getNode := func() (*v1.Node, error) { return testCase.node, testCase.err }
ttl, exists := GetObjectTTLFromNodeFunc(getNode)()
if exists != testCase.exists {
t.Errorf("%d: incorrect parsing: %t", i, exists)
continue
}
if exists && ttl != testCase.ttl {
t.Errorf("%d: incorrect ttl: %v", i, ttl)
}
}
}
type envConfigMaps struct {
envVarNames []string
envFromNames []string
}
type configMapsToAttach struct {
containerEnvConfigMaps []envConfigMaps
volumes []string
}
func podWithConfigMaps(ns, name string, toAttach configMapsToAttach) *v1.Pod {
pod := &v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Namespace: ns,
Name: name,
},
Spec: v1.PodSpec{},
}
for i, configMaps := range toAttach.containerEnvConfigMaps {
container := v1.Container{
Name: fmt.Sprintf("container-%d", i),
}
for _, name := range configMaps.envFromNames {
envFrom := v1.EnvFromSource{
ConfigMapRef: &v1.ConfigMapEnvSource{
LocalObjectReference: v1.LocalObjectReference{
Name: name,
},
},
}
container.EnvFrom = append(container.EnvFrom, envFrom)
}
for _, name := range configMaps.envVarNames {
envSource := &v1.EnvVarSource{
ConfigMapKeyRef: &v1.ConfigMapKeySelector{
LocalObjectReference: v1.LocalObjectReference{
Name: name,
},
},
}
container.Env = append(container.Env, v1.EnvVar{ValueFrom: envSource})
}
pod.Spec.Containers = append(pod.Spec.Containers, container)
}
for _, configMap := range toAttach.volumes {
volume := &v1.ConfigMapVolumeSource{
LocalObjectReference: v1.LocalObjectReference{Name: configMap},
}
pod.Spec.Volumes = append(pod.Spec.Volumes, v1.Volume{
Name: configMap,
VolumeSource: v1.VolumeSource{
ConfigMap: volume,
},
})
}
return pod
}
func TestCacheInvalidation(t *testing.T) {
fakeClient := &fake.Clientset{}
fakeClock := clock.NewFakeClock(time.Now())
store := newConfigMapStore(fakeClient, fakeClock, noObjectTTL, time.Minute)
manager := &cachingConfigMapManager{
configMapStore: store,
registeredPods: make(map[objectKey]*v1.Pod),
}
// Create a pod with some configMaps.
s1 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s1"}, envFromNames: []string{"s10"}},
{envVarNames: []string{"s2"}},
},
}
manager.RegisterPod(podWithConfigMaps("ns1", "name1", s1))
// Fetch both configMaps - this should triggger get operations.
store.Get("ns1", "s1")
store.Get("ns1", "s10")
store.Get("ns1", "s2")
actions := fakeClient.Actions()
assert.Equal(t, 3, len(actions), "unexpected actions: %#v", actions)
fakeClient.ClearActions()
// Update a pod with a new configMap.
s2 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s1"}},
{envVarNames: []string{"s2"}, envFromNames: []string{"s20"}},
},
volumes: []string{"s3"},
}
manager.RegisterPod(podWithConfigMaps("ns1", "name1", s2))
// All configMaps should be invalidated - this should trigger get operations.
store.Get("ns1", "s1")
store.Get("ns1", "s2")
store.Get("ns1", "s20")
store.Get("ns1", "s3")
actions = fakeClient.Actions()
assert.Equal(t, 4, len(actions), "unexpected actions: %#v", actions)
fakeClient.ClearActions()
// Create a new pod that is refencing the first three configMaps - those should
// be invalidated.
manager.RegisterPod(podWithConfigMaps("ns1", "name2", s1))
store.Get("ns1", "s1")
store.Get("ns1", "s10")
store.Get("ns1", "s2")
store.Get("ns1", "s20")
store.Get("ns1", "s3")
actions = fakeClient.Actions()
assert.Equal(t, 3, len(actions), "unexpected actions: %#v", actions)
fakeClient.ClearActions()
}
func TestCacheRefcounts(t *testing.T) {
fakeClient := &fake.Clientset{}
fakeClock := clock.NewFakeClock(time.Now())
store := newConfigMapStore(fakeClient, fakeClock, noObjectTTL, time.Minute)
manager := &cachingConfigMapManager{
configMapStore: store,
registeredPods: make(map[objectKey]*v1.Pod),
}
s1 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s1"}, envFromNames: []string{"s10"}},
{envVarNames: []string{"s2"}},
},
volumes: []string{"s3"},
}
manager.RegisterPod(podWithConfigMaps("ns1", "name1", s1))
manager.RegisterPod(podWithConfigMaps("ns1", "name2", s1))
s2 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s4"}},
{envVarNames: []string{"s5"}, envFromNames: []string{"s50"}},
},
}
manager.RegisterPod(podWithConfigMaps("ns1", "name2", s2))
manager.RegisterPod(podWithConfigMaps("ns1", "name3", s2))
manager.RegisterPod(podWithConfigMaps("ns1", "name4", s2))
manager.UnregisterPod(podWithConfigMaps("ns1", "name3", s2))
s3 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s3"}, envFromNames: []string{"s30"}},
{envVarNames: []string{"s5"}},
},
}
manager.RegisterPod(podWithConfigMaps("ns1", "name5", s3))
manager.RegisterPod(podWithConfigMaps("ns1", "name6", s3))
s4 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s6"}},
{envFromNames: []string{"s60"}},
},
}
manager.RegisterPod(podWithConfigMaps("ns1", "name7", s4))
manager.UnregisterPod(podWithConfigMaps("ns1", "name7", s4))
// Also check the Add + Update + Remove scenario.
manager.RegisterPod(podWithConfigMaps("ns1", "other-name", s1))
manager.RegisterPod(podWithConfigMaps("ns1", "other-name", s2))
manager.UnregisterPod(podWithConfigMaps("ns1", "other-name", s2))
refs := func(ns, name string) int {
store.lock.Lock()
defer store.lock.Unlock()
item, ok := store.items[objectKey{ns, name}]
if !ok {
return 0
}
return item.refCount
}
assert.Equal(t, refs("ns1", "s1"), 1)
assert.Equal(t, refs("ns1", "s10"), 1)
assert.Equal(t, refs("ns1", "s2"), 1)
assert.Equal(t, refs("ns1", "s3"), 3)
assert.Equal(t, refs("ns1", "s30"), 2)
assert.Equal(t, refs("ns1", "s4"), 2)
assert.Equal(t, refs("ns1", "s5"), 4)
assert.Equal(t, refs("ns1", "s50"), 2)
assert.Equal(t, refs("ns1", "s6"), 0)
assert.Equal(t, refs("ns1", "s60"), 0)
assert.Equal(t, refs("ns1", "s7"), 0)
}
func TestCachingConfigMapManager(t *testing.T) {
fakeClient := &fake.Clientset{}
configMapStore := newConfigMapStore(fakeClient, clock.RealClock{}, noObjectTTL, 0)
manager := &cachingConfigMapManager{
configMapStore: configMapStore,
registeredPods: make(map[objectKey]*v1.Pod),
}
// Create a pod with some configMaps.
s1 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s1"}},
{envFromNames: []string{"s20"}},
},
volumes: []string{"s2"},
}
manager.RegisterPod(podWithConfigMaps("ns1", "name1", s1))
manager.RegisterPod(podWithConfigMaps("ns2", "name2", s1))
// Update the pod with a different configMaps.
s2 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s3"}},
{envVarNames: []string{"s4"}},
{envFromNames: []string{"s40"}},
},
}
// Create another pod, but with same configMaps in different namespace.
manager.RegisterPod(podWithConfigMaps("ns2", "name2", s2))
// Create and delete a pod with some other configMaps.
s3 := configMapsToAttach{
containerEnvConfigMaps: []envConfigMaps{
{envVarNames: []string{"s6"}},
{envFromNames: []string{"s60"}},
},
}
manager.RegisterPod(podWithConfigMaps("ns3", "name", s3))
manager.UnregisterPod(podWithConfigMaps("ns3", "name", s3))
existingMaps := map[string][]string{
"ns1": {"s1", "s2", "s20"},
"ns2": {"s3", "s4", "s40"},
}
shouldExist := func(ns, configMap string) bool {
if cmaps, ok := existingMaps[ns]; ok {
for _, cm := range cmaps {
if cm == configMap {
return true
}
}
}
return false
}
for _, ns := range []string{"ns1", "ns2", "ns3"} {
for _, configMap := range []string{"s1", "s2", "s3", "s4", "s5", "s6", "s20", "s40", "s50"} {
checkConfigMap(t, configMapStore, ns, configMap, shouldExist(ns, configMap))
}
}
}

40
pkg/kubelet/configmap/fake_manager.go Normal file
View File

@ -0,0 +1,40 @@
/*
Copyright 2017 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 configmap
import (
"k8s.io/kubernetes/pkg/api/v1"
)
// fakeManager implements Manager interface for testing purposes.
// simple operations to apiserver.
type fakeManager struct {
}
func NewFakeManager() Manager {
return &fakeManager{}
}
func (s *fakeManager) GetConfigMap(namespace, name string) (*v1.ConfigMap, error) {
return nil, nil
}
func (s *fakeManager) RegisterPod(pod *v1.Pod) {
}
func (s *fakeManager) UnregisterPod(pod *v1.Pod) {
}

15
pkg/kubelet/kubelet.go
View File

@ -68,6 +68,7 @@ import (
"k8s.io/kubernetes/pkg/kubelet/certificate"
"k8s.io/kubernetes/pkg/kubelet/cm"
"k8s.io/kubernetes/pkg/kubelet/config"
"k8s.io/kubernetes/pkg/kubelet/configmap"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/dockershim"
"k8s.io/kubernetes/pkg/kubelet/dockershim/libdocker"
@ -487,9 +488,12 @@ func NewMainKubelet(kubeCfg *componentconfig.KubeletConfiguration, kubeDeps *Kub
secretManager := secret.NewCachingSecretManager(
kubeDeps.KubeClient, secret.GetObjectTTLFromNodeFunc(klet.GetNode))
klet.secretManager = secretManager
configMapManager := configmap.NewCachingConfigMapManager(
kubeDeps.KubeClient, configmap.GetObjectTTLFromNodeFunc(klet.GetNode))
klet.configMapManager = configMapManager
if klet.experimentalHostUserNamespaceDefaulting {
glog.Infof("Experimental host user namespace defaulting is enabled.")
}
@ -518,8 +522,8 @@ func NewMainKubelet(kubeCfg *componentconfig.KubeletConfiguration, kubeDeps *Kub
klet.livenessManager = proberesults.NewManager()
klet.podCache = kubecontainer.NewCache()
// podManager is also responsible for keeping secretManager contents up-to-date.
klet.podManager = kubepod.NewBasicPodManager(kubepod.NewBasicMirrorClient(klet.kubeClient), secretManager)
// podManager is also responsible for keeping secretManager and configMapManager contents up-to-date.
klet.podManager = kubepod.NewBasicPodManager(kubepod.NewBasicMirrorClient(klet.kubeClient), secretManager, configMapManager)
if kubeCfg.RemoteRuntimeEndpoint != "" {
// kubeCfg.RemoteImageEndpoint is same as kubeCfg.RemoteRuntimeEndpoint if not explicitly specified
@ -717,7 +721,7 @@ func NewMainKubelet(kubeCfg *componentconfig.KubeletConfiguration, kubeDeps *Kub
kubeDeps.Recorder)
klet.volumePluginMgr, err =
NewInitializedVolumePluginMgr(klet, secretManager, kubeDeps.VolumePlugins)
NewInitializedVolumePluginMgr(klet, secretManager, configMapManager, kubeDeps.VolumePlugins)
if err != nil {
return nil, err
}
@ -917,6 +921,9 @@ type Kubelet struct {
// Secret manager.
secretManager secret.Manager
// ConfigMap manager.
configMapManager configmap.Manager
// Cached MachineInfo returned by cadvisor.
machineInfo *cadvisorapi.MachineInfo

4
pkg/kubelet/kubelet_pods.go
View File

@ -446,7 +446,7 @@ func (kl *Kubelet) makeEnvironmentVariables(pod *v1.Pod, container *v1.Container
return result, fmt.Errorf("Couldn't get configMap %v/%v, no kubeClient defined", pod.Namespace, name)
}
optional := cm.Optional != nil && *cm.Optional
configMap, err = kl.kubeClient.Core().ConfigMaps(pod.Namespace).Get(name, metav1.GetOptions{})
configMap, err = kl.configMapManager.GetConfigMap(pod.Namespace, name)
if err != nil {
if errors.IsNotFound(err) && optional {
// ignore error when marked optional
@ -554,7 +554,7 @@ func (kl *Kubelet) makeEnvironmentVariables(pod *v1.Pod, container *v1.Container
if kl.kubeClient == nil {
return result, fmt.Errorf("Couldn't get configMap %v/%v, no kubeClient defined", pod.Namespace, name)
}
configMap, err = kl.kubeClient.Core().ConfigMaps(pod.Namespace).Get(name, metav1.GetOptions{})
configMap, err = kl.configMapManager.GetConfigMap(pod.Namespace, name)
if err != nil {
if errors.IsNotFound(err) && optional {
// ignore error when marked optional

7
pkg/kubelet/kubelet_test.go
View File

@ -46,6 +46,7 @@ import (
cadvisortest "k8s.io/kubernetes/pkg/kubelet/cadvisor/testing"
"k8s.io/kubernetes/pkg/kubelet/cm"
"k8s.io/kubernetes/pkg/kubelet/config"
"k8s.io/kubernetes/pkg/kubelet/configmap"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
"k8s.io/kubernetes/pkg/kubelet/eviction"
@ -208,7 +209,9 @@ func newTestKubeletWithImageList(
fakeMirrorClient := podtest.NewFakeMirrorClient()
secretManager := secret.NewSimpleSecretManager(kubelet.kubeClient)
kubelet.secretManager = secretManager
kubelet.podManager = kubepod.NewBasicPodManager(fakeMirrorClient, kubelet.secretManager)
configMapManager := configmap.NewSimpleConfigMapManager(kubelet.kubeClient)
kubelet.configMapManager = configMapManager
kubelet.podManager = kubepod.NewBasicPodManager(fakeMirrorClient, kubelet.secretManager, kubelet.configMapManager)
kubelet.statusManager = status.NewManager(fakeKubeClient, kubelet.podManager, &statustest.FakePodDeletionSafetyProvider{})
diskSpaceManager, err := newDiskSpaceManager(mockCadvisor, DiskSpacePolicy{})
if err != nil {
@ -276,7 +279,7 @@ func newTestKubeletWithImageList(
plug := &volumetest.FakeVolumePlugin{PluginName: "fake", Host: nil}
kubelet.volumePluginMgr, err =
NewInitializedVolumePluginMgr(kubelet, kubelet.secretManager, []volume.VolumePlugin{plug})
NewInitializedVolumePluginMgr(kubelet, kubelet.secretManager, kubelet.configMapManager, []volume.VolumePlugin{plug})
require.NoError(t, err, "Failed to initialize VolumePluginMgr")
kubelet.mounter = &mount.FakeMounter{}

2
pkg/kubelet/pod/BUILD
View File

@ -18,6 +18,7 @@ go_library(
deps = [
"//pkg/api/v1:go_default_library",
"//pkg/client/clientset_generated/clientset:go_default_library",
"//pkg/kubelet/configmap:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/secret:go_default_library",
"//pkg/kubelet/types:go_default_library",
@ -38,6 +39,7 @@ go_test(
tags = ["automanaged"],
deps = [
"//pkg/api/v1:go_default_library",
"//pkg/kubelet/configmap:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/pod/testing:go_default_library",
"//pkg/kubelet/secret:go_default_library",

17
pkg/kubelet/pod/pod_manager.go
View File

@ -21,6 +21,7 @@ import (
"k8s.io/apimachinery/pkg/types"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/kubelet/configmap"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/secret"
)
@ -113,17 +114,19 @@ type basicManager struct {
// Mirror pod UID to pod UID map.
translationByUID map[types.UID]types.UID
// basicManager is keeping secretManager up-to-date.
secretManager secret.Manager
// basicManager is keeping secretManager and configMapManager up-to-date.
secretManager secret.Manager
configMapManager configmap.Manager
// A mirror pod client to create/delete mirror pods.
MirrorClient
}
// NewBasicPodManager returns a functional Manager.
func NewBasicPodManager(client MirrorClient, secretManager secret.Manager) Manager {
func NewBasicPodManager(client MirrorClient, secretManager secret.Manager, configMapManager configmap.Manager) Manager {
pm := &basicManager{}
pm.secretManager = secretManager
pm.configMapManager = configMapManager
pm.MirrorClient = client
pm.SetPods(nil)
return pm
@ -163,6 +166,11 @@ func (pm *basicManager) updatePodsInternal(pods ...*v1.Pod) {
// not register pod, as it doesn't really matter.
pm.secretManager.RegisterPod(pod)
}
if pm.configMapManager != nil {
// TODO: Consider detecting only status update and in such case do
// not register pod, as it doesn't really matter.
pm.configMapManager.RegisterPod(pod)
}
podFullName := kubecontainer.GetPodFullName(pod)
if IsMirrorPod(pod) {
pm.mirrorPodByUID[pod.UID] = pod
@ -186,6 +194,9 @@ func (pm *basicManager) DeletePod(pod *v1.Pod) {
if pm.secretManager != nil {
pm.secretManager.UnregisterPod(pod)
}
if pm.configMapManager != nil {
pm.configMapManager.UnregisterPod(pod)
}
podFullName := kubecontainer.GetPodFullName(pod)
if IsMirrorPod(pod) {
delete(pm.mirrorPodByUID, pod.UID)

4
pkg/kubelet/pod/pod_manager_test.go
View File

@ -23,6 +23,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/kubelet/configmap"
podtest "k8s.io/kubernetes/pkg/kubelet/pod/testing"
"k8s.io/kubernetes/pkg/kubelet/secret"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
@ -32,7 +33,8 @@ import (
func newTestManager() (*basicManager, *podtest.FakeMirrorClient) {
fakeMirrorClient := podtest.NewFakeMirrorClient()
secretManager := secret.NewFakeManager()
manager := NewBasicPodManager(fakeMirrorClient, secretManager).(*basicManager)
configMapManager := configmap.NewFakeManager()
manager := NewBasicPodManager(fakeMirrorClient, secretManager, configMapManager).(*basicManager)
return manager, fakeMirrorClient
}

2
pkg/kubelet/prober/common_test.go
View File

@ -99,7 +99,7 @@ func setTestProbe(pod *v1.Pod, probeType probeType, probeSpec v1.Probe) {
func newTestManager() *manager {
refManager := kubecontainer.NewRefManager()
refManager.SetRef(testContainerID, &v1.ObjectReference{}) // Suppress prober warnings.
podManager := kubepod.NewBasicPodManager(nil, nil)
podManager := kubepod.NewBasicPodManager(nil, nil, nil)
// Add test pod to pod manager, so that status manager can get the pod from pod manager if needed.
podManager.AddPod(getTestPod())
m := NewManager(

2
pkg/kubelet/prober/worker_test.go
View File

@ -118,7 +118,7 @@ func TestDoProbe(t *testing.T) {
}
// Clean up.
m.statusManager = status.NewManager(&fake.Clientset{}, kubepod.NewBasicPodManager(nil, nil), &statustest.FakePodDeletionSafetyProvider{})
m.statusManager = status.NewManager(&fake.Clientset{}, kubepod.NewBasicPodManager(nil, nil, nil), &statustest.FakePodDeletionSafetyProvider{})
resultsManager(m, probeType).Remove(testContainerID)
}
}

6
pkg/kubelet/runonce_test.go
View File

@ -34,6 +34,7 @@ import (
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
cadvisortest "k8s.io/kubernetes/pkg/kubelet/cadvisor/testing"
"k8s.io/kubernetes/pkg/kubelet/cm"
"k8s.io/kubernetes/pkg/kubelet/configmap"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
"k8s.io/kubernetes/pkg/kubelet/eviction"
@ -63,8 +64,9 @@ func TestRunOnce(t *testing.T) {
Capacity: 10 * mb,
}, nil)
fakeSecretManager := secret.NewFakeManager()
fakeConfigMapManager := configmap.NewFakeManager()
podManager := kubepod.NewBasicPodManager(
podtest.NewFakeMirrorClient(), fakeSecretManager)
podtest.NewFakeMirrorClient(), fakeSecretManager, fakeConfigMapManager)
diskSpaceManager, _ := newDiskSpaceManager(cadvisor, DiskSpacePolicy{})
fakeRuntime := &containertest.FakeRuntime{}
basePath, err := utiltesting.MkTmpdir("kubelet")
@ -93,7 +95,7 @@ func TestRunOnce(t *testing.T) {
plug := &volumetest.FakeVolumePlugin{PluginName: "fake", Host: nil}
kb.volumePluginMgr, err =
NewInitializedVolumePluginMgr(kb, fakeSecretManager, []volume.VolumePlugin{plug})
NewInitializedVolumePluginMgr(kb, fakeSecretManager, fakeConfigMapManager, []volume.VolumePlugin{plug})
if err != nil {
t.Fatalf("failed to initialize VolumePluginMgr: %v", err)
}

1
pkg/kubelet/status/BUILD
View File

@ -48,6 +48,7 @@ go_test(
"//pkg/api/v1/pod:go_default_library",
"//pkg/client/clientset_generated/clientset:go_default_library",
"//pkg/client/clientset_generated/clientset/fake:go_default_library",
"//pkg/kubelet/configmap:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/pod:go_default_library",
"//pkg/kubelet/pod/testing:go_default_library",

3
pkg/kubelet/status/status_manager_test.go
View File

@ -36,6 +36,7 @@ import (
podutil "k8s.io/kubernetes/pkg/api/v1/pod"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
kubeconfigmap "k8s.io/kubernetes/pkg/kubelet/configmap"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
kubepod "k8s.io/kubernetes/pkg/kubelet/pod"
podtest "k8s.io/kubernetes/pkg/kubelet/pod/testing"
@ -74,7 +75,7 @@ func (m *manager) testSyncBatch() {
}
func newTestManager(kubeClient clientset.Interface) *manager {
podManager := kubepod.NewBasicPodManager(podtest.NewFakeMirrorClient(), kubesecret.NewFakeManager())
podManager := kubepod.NewBasicPodManager(podtest.NewFakeMirrorClient(), kubesecret.NewFakeManager(), kubeconfigmap.NewFakeManager())
podManager.AddPod(getTestPod())
return NewManager(kubeClient, podManager, &statustest.FakePodDeletionSafetyProvider{}).(*manager)
}

20
pkg/kubelet/volume_host.go
View File

@ -24,6 +24,7 @@ import (
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
"k8s.io/kubernetes/pkg/cloudprovider"
"k8s.io/kubernetes/pkg/kubelet/configmap"
"k8s.io/kubernetes/pkg/kubelet/secret"
"k8s.io/kubernetes/pkg/util/io"
"k8s.io/kubernetes/pkg/util/mount"
@ -39,11 +40,13 @@ import (
func NewInitializedVolumePluginMgr(
kubelet *Kubelet,
secretManager secret.Manager,
configMapManager configmap.Manager,
plugins []volume.VolumePlugin) (*volume.VolumePluginMgr, error) {
kvh := &kubeletVolumeHost{
kubelet: kubelet,
volumePluginMgr: volume.VolumePluginMgr{},
secretManager: secretManager,
kubelet: kubelet,
volumePluginMgr: volume.VolumePluginMgr{},
secretManager: secretManager,
configMapManager: configMapManager,
}
if err := kvh.volumePluginMgr.InitPlugins(plugins, kvh); err != nil {
@ -63,9 +66,10 @@ func (kvh *kubeletVolumeHost) GetPluginDir(pluginName string) string {
}
type kubeletVolumeHost struct {
kubelet *Kubelet
volumePluginMgr volume.VolumePluginMgr
secretManager secret.Manager
kubelet *Kubelet
volumePluginMgr volume.VolumePluginMgr
secretManager secret.Manager
configMapManager configmap.Manager
}
func (kvh *kubeletVolumeHost) GetPodVolumeDir(podUID types.UID, pluginName string, volumeName string) string {
@ -141,6 +145,10 @@ func (kvh *kubeletVolumeHost) GetSecretFunc() func(namespace, name string) (*v1.
return kvh.secretManager.GetSecret
}
func (kvh *kubeletVolumeHost) GetConfigMapFunc() func(namespace, name string) (*v1.ConfigMap, error) {
return kvh.configMapManager.GetConfigMap
}
func (kvh *kubeletVolumeHost) GetNodeLabels() (map[string]string, error) {
node, err := kvh.kubelet.GetNode()
if err != nil {

1
pkg/kubelet/volumemanager/BUILD
View File

@ -47,6 +47,7 @@ go_test(
"//pkg/client/clientset_generated/clientset:go_default_library",
"//pkg/client/clientset_generated/clientset/fake:go_default_library",
"//pkg/kubelet/config:go_default_library",
"//pkg/kubelet/configmap:go_default_library",
"//pkg/kubelet/container/testing:go_default_library",
"//pkg/kubelet/pod:go_default_library",
"//pkg/kubelet/pod/testing:go_default_library",

1
pkg/kubelet/volumemanager/populator/BUILD
View File

@ -53,6 +53,7 @@ go_test(
deps = [
"//pkg/api/v1:go_default_library",
"//pkg/client/clientset_generated/clientset/fake:go_default_library",
"//pkg/kubelet/configmap:go_default_library",
"//pkg/kubelet/container/testing:go_default_library",
"//pkg/kubelet/pod:go_default_library",
"//pkg/kubelet/pod/testing:go_default_library",

4
pkg/kubelet/volumemanager/populator/desired_state_of_world_populator_test.go
View File

@ -23,6 +23,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
"k8s.io/kubernetes/pkg/kubelet/configmap"
containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
kubepod "k8s.io/kubernetes/pkg/kubelet/pod"
podtest "k8s.io/kubernetes/pkg/kubelet/pod/testing"
@ -40,8 +41,9 @@ func TestFindAndAddNewPods_FindAndRemoveDeletedPods(t *testing.T) {
fakeClient := &fake.Clientset{}
fakeSecretManager := secret.NewFakeManager()
fakeConfigMapManager := configmap.NewFakeManager()
fakePodManager := kubepod.NewBasicPodManager(
podtest.NewFakeMirrorClient(), fakeSecretManager)
podtest.NewFakeMirrorClient(), fakeSecretManager, fakeConfigMapManager)
fakesDSW := cache.NewDesiredStateOfWorld(fakeVolumePluginMgr)
fakeRuntime := &containertest.FakeRuntime{}

5
pkg/kubelet/volumemanager/volume_manager_test.go
View File

@ -32,6 +32,7 @@ import (
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
"k8s.io/kubernetes/pkg/kubelet/config"
"k8s.io/kubernetes/pkg/kubelet/configmap"
containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
"k8s.io/kubernetes/pkg/kubelet/pod"
kubepod "k8s.io/kubernetes/pkg/kubelet/pod"
@ -56,7 +57,7 @@ func TestGetMountedVolumesForPodAndGetVolumesInUse(t *testing.T) {
t.Fatalf("can't make a temp dir: %v", err)
}
defer os.RemoveAll(tmpDir)
podManager := kubepod.NewBasicPodManager(podtest.NewFakeMirrorClient(), secret.NewFakeManager())
podManager := kubepod.NewBasicPodManager(podtest.NewFakeMirrorClient(), secret.NewFakeManager(), configmap.NewFakeManager())
node, pod, pv, claim := createObjects()
kubeClient := fake.NewSimpleClientset(node, pod, pv, claim)
@ -101,7 +102,7 @@ func TestGetExtraSupplementalGroupsForPod(t *testing.T) {
t.Fatalf("can't make a temp dir: %v", err)
}
defer os.RemoveAll(tmpDir)
podManager := kubepod.NewBasicPodManager(podtest.NewFakeMirrorClient(), secret.NewFakeManager())
podManager := kubepod.NewBasicPodManager(podtest.NewFakeMirrorClient(), secret.NewFakeManager(), configmap.NewFakeManager())
node, pod, _, claim := createObjects()

46
pkg/volume/configmap/configmap.go
View File

@ -42,13 +42,15 @@ const (
// configMapPlugin implements the VolumePlugin interface.
type configMapPlugin struct {
host volume.VolumeHost
host volume.VolumeHost
getConfigMap func(namespace, name string) (*v1.ConfigMap, error)
}
var _ volume.VolumePlugin = &configMapPlugin{}
func (plugin *configMapPlugin) Init(host volume.VolumeHost) error {
plugin.host = host
plugin.getConfigMap = host.GetConfigMapFunc()
return nil
}
@ -86,14 +88,32 @@ func (plugin *configMapPlugin) SupportsBulkVolumeVerification() bool {
func (plugin *configMapPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, opts volume.VolumeOptions) (volume.Mounter, error) {
return &configMapVolumeMounter{
configMapVolume: &configMapVolume{spec.Name(), pod.UID, plugin, plugin.host.GetMounter(), plugin.host.GetWriter(), volume.MetricsNil{}},
source: *spec.Volume.ConfigMap,
pod: *pod,
opts: &opts}, nil
configMapVolume: &configMapVolume{
spec.Name(),
pod.UID,
plugin,
plugin.host.GetMounter(),
plugin.host.GetWriter(),
volume.MetricsNil{},
},
source: *spec.Volume.ConfigMap,
pod: *pod,
opts: &opts,
getConfigMap: plugin.getConfigMap,
}, nil
}
func (plugin *configMapPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
return &configMapVolumeUnmounter{&configMapVolume{volName, podUID, plugin, plugin.host.GetMounter(), plugin.host.GetWriter(), volume.MetricsNil{}}}, nil
return &configMapVolumeUnmounter{
&configMapVolume{
volName,
podUID,
plugin,
plugin.host.GetMounter(),
plugin.host.GetWriter(),
volume.MetricsNil{},
},
}, nil
}
func (plugin *configMapPlugin) ConstructVolumeSpec(volumeName, mountPath string) (*volume.Spec, error) {
@ -126,9 +146,10 @@ func (sv *configMapVolume) GetPath() string {
type configMapVolumeMounter struct {
*configMapVolume
source v1.ConfigMapVolumeSource
pod v1.Pod
opts *volume.VolumeOptions
source v1.ConfigMapVolumeSource
pod v1.Pod
opts *volume.VolumeOptions
getConfigMap func(namespace, name string) (*v1.ConfigMap, error)
}
var _ volume.Mounter = &configMapVolumeMounter{}
@ -174,13 +195,8 @@ func (b *configMapVolumeMounter) SetUpAt(dir string, fsGroup *types.UnixGroupID)
return err
}
kubeClient := b.plugin.host.GetKubeClient()
if kubeClient == nil {
return fmt.Errorf("Cannot setup configMap volume %v because kube client is not configured", b.volName)
}
optional := b.source.Optional != nil && *b.source.Optional
configMap, err := kubeClient.Core().ConfigMaps(b.pod.Namespace).Get(b.source.Name, metav1.GetOptions{})
configMap, err := b.getConfigMap(b.pod.Namespace, b.source.Name)
if err != nil {
if !(errors.IsNotFound(err) && optional) {
glog.Errorf("Couldn't get configMap %v/%v: %v", b.pod.Namespace, b.source.Name, err)

3
pkg/volume/plugins.go
View File

@ -233,6 +233,9 @@ type VolumeHost interface {
// Returns a function that returns a secret.
GetSecretFunc() func(namespace, name string) (*v1.Secret, error)
// Returns a function that returns a configmap.
GetConfigMapFunc() func(namespace, name string) (*v1.ConfigMap, error)
// Returns the labels on the node
GetNodeLabels() (map[string]string, error)
}

16
pkg/volume/projected/projected.go
View File

@ -45,8 +45,9 @@ const (
)
type projectedPlugin struct {
host volume.VolumeHost
getSecret func(namespace, name string) (*v1.Secret, error)
host volume.VolumeHost
getSecret func(namespace, name string) (*v1.Secret, error)
getConfigMap func(namespace, name string) (*v1.ConfigMap, error)
}
var _ volume.VolumePlugin = &projectedPlugin{}
@ -68,6 +69,7 @@ func getPath(uid types.UID, volName string, host volume.VolumeHost) string {
func (plugin *projectedPlugin) Init(host volume.VolumeHost) error {
plugin.host = host
plugin.getSecret = host.GetSecretFunc()
plugin.getConfigMap = host.GetConfigMapFunc()
return nil
}
@ -235,10 +237,10 @@ func (s *projectedVolumeMounter) collectData() (map[string]volumeutil.FileProjec
secretapi, err := s.plugin.getSecret(s.pod.Namespace, source.Secret.Name)
if err != nil {
if !(errors.IsNotFound(err) && optional) {
glog.Errorf("Couldn't get secret %v/%v", s.pod.Namespace, source.Secret.Name)
glog.Errorf("Couldn't get secret %v/%v: %v", s.pod.Namespace, source.Secret.Name, err)
errlist = append(errlist, err)
continue
}
secretapi = &v1.Secret{
ObjectMeta: metav1.ObjectMeta{
Namespace: s.pod.Namespace,
@ -248,17 +250,16 @@ func (s *projectedVolumeMounter) collectData() (map[string]volumeutil.FileProjec
}
secretPayload, err := secret.MakePayload(source.Secret.Items, secretapi, s.source.DefaultMode, optional)
if err != nil {
glog.Errorf("Couldn't get secret %v/%v: %v", s.pod.Namespace, source.Secret.Name, err)
glog.Errorf("Couldn't get secret payload %v/%v: %v", s.pod.Namespace, source.Secret.Name, err)
errlist = append(errlist, err)
continue
}
for k, v := range secretPayload {
payload[k] = v
}
} else if source.ConfigMap != nil {
optional := source.ConfigMap.Optional != nil && *source.ConfigMap.Optional
configMap, err := kubeClient.Core().ConfigMaps(s.pod.Namespace).Get(source.ConfigMap.Name, metav1.GetOptions{})
configMap, err := s.plugin.getConfigMap(s.pod.Namespace, source.ConfigMap.Name)
if err != nil {
if !(errors.IsNotFound(err) && optional) {
glog.Errorf("Couldn't get configMap %v/%v: %v", s.pod.Namespace, source.ConfigMap.Name, err)
@ -274,6 +275,7 @@ func (s *projectedVolumeMounter) collectData() (map[string]volumeutil.FileProjec
}
configMapPayload, err := configmap.MakePayload(source.ConfigMap.Items, configMap, s.source.DefaultMode, optional)
if err != nil {
glog.Errorf("Couldn't get configMap payload %v/%v: %v", s.pod.Namespace, source.ConfigMap.Name, err)
errlist = append(errlist, err)
continue
}

3
pkg/volume/projected/projected_test.go
View File

@ -505,7 +505,8 @@ func TestCollectDataWithConfigMap(t *testing.T) {
sources: source.Sources,
podUID: pod.UID,
plugin: &projectedPlugin{
host: host,
host: host,
getConfigMap: host.GetConfigMapFunc(),
},
},
source: *source,

2
pkg/volume/secret/secret.go
View File

@ -198,7 +198,7 @@ func (b *secretVolumeMounter) SetUpAt(dir string, fsGroup *types.UnixGroupID) er
secret, err := b.getSecret(b.pod.Namespace, b.source.SecretName)
if err != nil {
if !(errors.IsNotFound(err) && optional) {
glog.Errorf("Couldn't get secret %v/%v", b.pod.Namespace, b.source.SecretName)
glog.Errorf("Couldn't get secret %v/%v: %v", b.pod.Namespace, b.source.SecretName, err)
return err
}
secret = &v1.Secret{

6
pkg/volume/testing/testing.go
View File

@ -134,6 +134,12 @@ func (f *fakeVolumeHost) GetSecretFunc() func(namespace, name string) (*v1.Secre
}
}
func (f *fakeVolumeHost) GetConfigMapFunc() func(namespace, name string) (*v1.ConfigMap, error) {
return func(namespace, name string) (*v1.ConfigMap, error) {
return f.kubeClient.Core().ConfigMaps(namespace).Get(name, metav1.GetOptions{})
}
}
func (f *fakeVolumeHost) GetNodeLabels() (map[string]string, error) {
return map[string]string{"test-label": "test-value"}, nil
}