kubernetes userns_manager_test 源码
kubernetes userns_manager_test 代码
文件路径：/pkg/kubelet/userns_manager_test.go
/*
Copyright 2022 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 kubelet
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"k8s.io/apimachinery/pkg/types"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
pkgfeatures "k8s.io/kubernetes/pkg/features"
)
type testUserNsPodsManager struct {
}
func (m *testUserNsPodsManager) getPodDir(podUID types.UID) string {
return "/tmp/non-existant-dir.This-is-not-used-in-tests"
}
func (m *testUserNsPodsManager) listPodsFromDisk() ([]types.UID, error) {
return nil, nil
}
func TestUserNsManagerAllocate(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, pkgfeatures.UserNamespacesStatelessPodsSupport, true)()
testUserNsPodsManager := &testUserNsPodsManager{}
m, err := MakeUserNsManager(testUserNsPodsManager)
require.NoError(t, err)
assert.Equal(t, true, m.isSet(0), "m.isSet(0) should be true")
assert.Equal(t, true, m.isSet(1), "m.isSet(1) should be true")
allocated, length, err := m.allocateOne("one")
assert.NoError(t, err)
assert.Equal(t, userNsLength, int(length), "m.isSet(%d).length=%v", allocated, length)
assert.Equal(t, true, m.isSet(allocated), "m.isSet(%d)", allocated)
allocated2, length2, err := m.allocateOne("two")
assert.NoError(t, err)
assert.NotEqual(t, allocated, allocated2, "allocated != allocated2")
assert.Equal(t, length, length2, "length == length2")
// verify that re-adding the same pod with the same settings won't fail
err = m.record("two", allocated2, length2)
assert.NoError(t, err)
// but it fails if anyting is different
err = m.record("two", allocated2+1, length2)
assert.Error(t, err)
m.Release("one")
m.Release("two")
assert.Equal(t, false, m.isSet(allocated), "m.isSet(%d)", allocated)
assert.Equal(t, false, m.isSet(allocated2), "m.nsSet(%d)", allocated2)
var allocs []uint32
for i := 0; i < 1000; i++ {
allocated, length, err = m.allocateOne(types.UID(fmt.Sprintf("%d", i)))
assert.Equal(t, userNsLength, int(length), "length is not the expected. iter: %v", i)
assert.NoError(t, err)
allocs = append(allocs, allocated)
}
for i, v := range allocs {
assert.Equal(t, true, m.isSet(v), "m.isSet(%d) should be true", v)
m.Release(types.UID(fmt.Sprintf("%d", i)))
assert.Equal(t, false, m.isSet(v), "m.isSet(%d) should be false", v)
err = m.record(types.UID(fmt.Sprintf("%d", i)), v, userNsLength)
assert.NoError(t, err)
m.Release(types.UID(fmt.Sprintf("%d", i)))
assert.Equal(t, false, m.isSet(v), "m.isSet(%d) should be false", v)
}
}
func TestUserNsManagerParseUserNsFile(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, pkgfeatures.UserNamespacesStatelessPodsSupport, true)()
cases := []struct {
name string
file string
success bool
}{
{
name: "basic",
file: `{
"uidMappings":[ { "hostId":131072, "containerId":0, "length":65536 } ],
"gidMappings":[ { "hostId":131072, "containerId":0, "length":65536 } ]
}`,
success: true,
},
{
name: "invalid length",
file: `{
"uidMappings":[ { "hostId":131072, "containerId":0, "length":0 } ],
"gidMappings":[ { "hostId":131072, "containerId":0, "length":0 } ]
}`,
success: false,
},
{
name: "wrong offset",
file: `{
"uidMappings":[ {"hostId":131072, "containerId":0, "length":65536 } ],
"gidMappings":[ {"hostId":1, "containerId":0, "length":65536 } ]
}`,
success: false,
},
{
name: "two GID mappings",
file: `{
"uidMappings":[ { "hostId":131072, "containerId":0, "length":userNsLength } ],
"gidMappings":[ { "hostId":131072, "containerId":0, "length":userNsLength }, { "hostId":196608, "containerId":0, "length":65536 } ]
}`,
success: false,
},
{
name: "two UID mappings",
file: `{
"uidMappings":[ { "hostId":131072, "containerId":0, "length":65536 }, { "hostId":196608, "containerId":0, "length":65536 } ],
"gidMappings":[ { "hostId":131072, "containerId":0, "length":65536 } ]
}`,
success: false,
},
{
name: "no root UID",
file: `{
"uidMappings":[ { "hostId":131072, "containerId":1, "length":65536 } ],
"gidMappings":[ { "hostId":131072, "containerId":0, "length":65536 } ]
}`,
success: false,
},
{
name: "no root GID",
file: `{
"uidMappings":[ { "hostId":131072, "containerId":0, "length":65536 } ],
"gidMappings":[ { "hostId":131072, "containerId":1, "length":65536 } ]
}`,
success: false,
},
}
testUserNsPodsManager := &testUserNsPodsManager{}
m, err := MakeUserNsManager(testUserNsPodsManager)
assert.NoError(t, err)
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
// We don't validate the result. It was parsed with the json parser, we trust that.
_, err = m.parseUserNsFileAndRecord(types.UID(tc.name), []byte(tc.file))
if (tc.success && err == nil) || (!tc.success && err != nil) {
return
}
t.Errorf("expected success: %v but got error: %v", tc.success, err)
})
}
}
func TestUserNsManagerHostIDFromMapping(t *testing.T) {
// mapping []*runtimeapi.IDMapping, containerId *int64
cases := []struct {
name string
success bool
containerId int64 // -1 means a nil ptr will be used.
expHostId int64
m []*runtimeapi.IDMapping
}{
{
name: "one basic mapping",
success: true,
containerId: -1,
expHostId: 0,
m: []*runtimeapi.IDMapping{
{
HostId: 0,
ContainerId: 0,
Length: userNsLength,
},
},
},
{
name: "one unprivileged mapping",
success: true,
containerId: -1,
expHostId: userNsLength * 2,
m: []*runtimeapi.IDMapping{
{
HostId: userNsLength * 2,
ContainerId: 0,
Length: userNsLength,
},
},
},
{
name: "one unprivileged mapping random id",
success: true,
containerId: 3,
expHostId: userNsLength*2 + 3,
m: []*runtimeapi.IDMapping{
{
HostId: userNsLength * 2,
ContainerId: 0,
Length: userNsLength,
},
},
},
{
name: "two unprivileged mapping",
success: true,
containerId: 0,
expHostId: userNsLength*2 + 0,
m: []*runtimeapi.IDMapping{
{
HostId: userNsLength * 2,
ContainerId: 0,
Length: 1,
},
{
HostId: userNsLength*2 + 10,
ContainerId: 1,
Length: 1,
},
},
},
{
name: "two unprivileged mapping - random id",
success: true,
containerId: 1,
expHostId: userNsLength*2 + 10,
m: []*runtimeapi.IDMapping{
{
HostId: userNsLength * 2,
ContainerId: 0,
Length: 1,
},
{
HostId: userNsLength*2 + 10,
ContainerId: 1,
Length: 1,
},
},
},
{
name: "two unprivileged mapping - not mapped user",
success: false,
containerId: 3,
m: []*runtimeapi.IDMapping{
{
HostId: userNsLength * 2,
ContainerId: 0,
Length: 1,
},
{
HostId: userNsLength*2 + 1,
ContainerId: 1,
Length: 1,
},
},
},
{
name: "no mappings",
success: false,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
var containerId *int64
if tc.containerId != -1 {
containerId = &tc.containerId
}
id, err := hostIDFromMapping(tc.m, containerId)
if (tc.success && err != nil) || (!tc.success && err == nil) {
t.Fatalf("%v: expected success: %v - got error: %v", tc.name, tc.success, err)
}
if !tc.success && err != nil {
return
}
if id != tc.expHostId {
t.Errorf("expected: %v - got: %v", tc.expHostId, id)
}
})
}
}
相关信息
相关文章
kubernetes active_deadline_test 源码
kubernetes kubelet_getters_test 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦