413 lines
14 KiB
Go
413 lines
14 KiB
Go
/*
|
|
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 server
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
"syscall"
|
|
"testing"
|
|
|
|
"github.com/containerd/containerd/api/services/execution"
|
|
snapshotapi "github.com/containerd/containerd/api/services/snapshot"
|
|
imagespec "github.com/opencontainers/image-spec/specs-go/v1"
|
|
runtimespec "github.com/opencontainers/runtime-spec/specs-go"
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
"golang.org/x/net/context"
|
|
runtime "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1"
|
|
|
|
"github.com/kubernetes-incubator/cri-containerd/pkg/metadata"
|
|
ostesting "github.com/kubernetes-incubator/cri-containerd/pkg/os/testing"
|
|
servertesting "github.com/kubernetes-incubator/cri-containerd/pkg/server/testing"
|
|
)
|
|
|
|
func getRunPodSandboxTestData() (*runtime.PodSandboxConfig, *imagespec.ImageConfig, func(*testing.T, string, *runtimespec.Spec)) {
|
|
config := &runtime.PodSandboxConfig{
|
|
Metadata: &runtime.PodSandboxMetadata{
|
|
Name: "test-name",
|
|
Uid: "test-uid",
|
|
Namespace: "test-ns",
|
|
Attempt: 1,
|
|
},
|
|
Hostname: "test-hostname",
|
|
LogDirectory: "test-log-directory",
|
|
Labels: map[string]string{"a": "b"},
|
|
Annotations: map[string]string{"c": "d"},
|
|
Linux: &runtime.LinuxPodSandboxConfig{
|
|
CgroupParent: "/test/cgroup/parent",
|
|
},
|
|
}
|
|
imageConfig := &imagespec.ImageConfig{
|
|
Env: []string{"a=b", "c=d"},
|
|
Entrypoint: []string{"/pause"},
|
|
Cmd: []string{"forever"},
|
|
WorkingDir: "/workspace",
|
|
}
|
|
specCheck := func(t *testing.T, id string, spec *runtimespec.Spec) {
|
|
assert.Equal(t, "test-hostname", spec.Hostname)
|
|
assert.Equal(t, getCgroupsPath("/test/cgroup/parent", id), spec.Linux.CgroupsPath)
|
|
assert.Equal(t, relativeRootfsPath, spec.Root.Path)
|
|
assert.Equal(t, true, spec.Root.Readonly)
|
|
assert.Contains(t, spec.Process.Env, "a=b", "c=d")
|
|
assert.Equal(t, []string{"/pause", "forever"}, spec.Process.Args)
|
|
assert.Equal(t, "/workspace", spec.Process.Cwd)
|
|
}
|
|
return config, imageConfig, specCheck
|
|
}
|
|
|
|
func TestGenerateSandboxContainerSpec(t *testing.T) {
|
|
testID := "test-id"
|
|
for desc, test := range map[string]struct {
|
|
configChange func(*runtime.PodSandboxConfig)
|
|
imageConfigChange func(*imagespec.ImageConfig)
|
|
specCheck func(*testing.T, *runtimespec.Spec)
|
|
expectErr bool
|
|
}{
|
|
"spec should reflect original config": {
|
|
specCheck: func(t *testing.T, spec *runtimespec.Spec) {
|
|
// runtime spec should have expected namespaces enabled by default.
|
|
require.NotNil(t, spec.Linux)
|
|
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.NetworkNamespace,
|
|
})
|
|
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.PIDNamespace,
|
|
})
|
|
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.IPCNamespace,
|
|
})
|
|
},
|
|
},
|
|
"host namespace": {
|
|
configChange: func(c *runtime.PodSandboxConfig) {
|
|
c.Linux.SecurityContext = &runtime.LinuxSandboxSecurityContext{
|
|
NamespaceOptions: &runtime.NamespaceOption{
|
|
HostNetwork: true,
|
|
HostPid: true,
|
|
HostIpc: true,
|
|
},
|
|
}
|
|
},
|
|
specCheck: func(t *testing.T, spec *runtimespec.Spec) {
|
|
// runtime spec should disable expected namespaces in host mode.
|
|
require.NotNil(t, spec.Linux)
|
|
assert.NotContains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.NetworkNamespace,
|
|
})
|
|
assert.NotContains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.PIDNamespace,
|
|
})
|
|
assert.NotContains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.IPCNamespace,
|
|
})
|
|
},
|
|
},
|
|
"should return error when entrypoint is empty": {
|
|
imageConfigChange: func(c *imagespec.ImageConfig) {
|
|
c.Entrypoint = nil
|
|
},
|
|
expectErr: true,
|
|
},
|
|
"should return error when env is invalid ": {
|
|
// Also covers addImageEnvs.
|
|
imageConfigChange: func(c *imagespec.ImageConfig) {
|
|
c.Env = []string{"a"}
|
|
},
|
|
expectErr: true,
|
|
},
|
|
} {
|
|
t.Logf("TestCase %q", desc)
|
|
c := newTestCRIContainerdService()
|
|
config, imageConfig, specCheck := getRunPodSandboxTestData()
|
|
if test.configChange != nil {
|
|
test.configChange(config)
|
|
}
|
|
if test.imageConfigChange != nil {
|
|
test.imageConfigChange(imageConfig)
|
|
}
|
|
spec, err := c.generateSandboxContainerSpec(testID, config, imageConfig)
|
|
if test.expectErr {
|
|
assert.Error(t, err)
|
|
assert.Nil(t, spec)
|
|
continue
|
|
}
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, spec)
|
|
specCheck(t, testID, spec)
|
|
if test.specCheck != nil {
|
|
test.specCheck(t, spec)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestSetupSandboxFiles(t *testing.T) {
|
|
testRootDir := "test-sandbox-root"
|
|
for desc, test := range map[string]struct {
|
|
dnsConfig *runtime.DNSConfig
|
|
hostIpc bool
|
|
expectedCalls []ostesting.CalledDetail
|
|
}{
|
|
"should check host /dev/shm existence when hostIpc is true": {
|
|
hostIpc: true,
|
|
expectedCalls: []ostesting.CalledDetail{
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/hosts", testRootDir + "/hosts", os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/resolv.conf", testRootDir + "/resolv.conf", os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "Stat",
|
|
Arguments: []interface{}{"/dev/shm"},
|
|
},
|
|
},
|
|
},
|
|
"should create new /etc/resolv.conf if DNSOptions is set": {
|
|
dnsConfig: &runtime.DNSConfig{
|
|
Servers: []string{"8.8.8.8"},
|
|
Searches: []string{"114.114.114.114"},
|
|
Options: []string{"timeout:1"},
|
|
},
|
|
hostIpc: true,
|
|
expectedCalls: []ostesting.CalledDetail{
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/hosts", testRootDir + "/hosts", os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "WriteFile",
|
|
Arguments: []interface{}{
|
|
testRootDir + "/resolv.conf", []byte(`search 114.114.114.114
|
|
nameserver 8.8.8.8
|
|
options timeout:1
|
|
`), os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "Stat",
|
|
Arguments: []interface{}{"/dev/shm"},
|
|
},
|
|
},
|
|
},
|
|
"should create sandbox shm when hostIpc is false": {
|
|
hostIpc: false,
|
|
expectedCalls: []ostesting.CalledDetail{
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/hosts", testRootDir + "/hosts", os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/resolv.conf", testRootDir + "/resolv.conf", os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "MkdirAll",
|
|
Arguments: []interface{}{
|
|
testRootDir + "/shm", os.FileMode(0700),
|
|
},
|
|
},
|
|
{
|
|
Name: "Mount",
|
|
// Ignore arguments which are too complex to check.
|
|
},
|
|
},
|
|
},
|
|
} {
|
|
t.Logf("TestCase %q", desc)
|
|
c := newTestCRIContainerdService()
|
|
cfg := &runtime.PodSandboxConfig{
|
|
DnsConfig: test.dnsConfig,
|
|
Linux: &runtime.LinuxPodSandboxConfig{
|
|
SecurityContext: &runtime.LinuxSandboxSecurityContext{
|
|
NamespaceOptions: &runtime.NamespaceOption{
|
|
HostIpc: test.hostIpc,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
c.setupSandboxFiles(testRootDir, cfg)
|
|
calls := c.os.(*ostesting.FakeOS).GetCalls()
|
|
assert.Len(t, calls, len(test.expectedCalls))
|
|
for i, expected := range test.expectedCalls {
|
|
if expected.Arguments == nil {
|
|
// Ignore arguments.
|
|
expected.Arguments = calls[i].Arguments
|
|
}
|
|
assert.Equal(t, expected, calls[i])
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestRunPodSandbox(t *testing.T) {
|
|
config, imageConfig, _ := getRunPodSandboxTestData() // TODO: declare and test specCheck see below
|
|
c := newTestCRIContainerdService()
|
|
fakeSnapshotClient := WithFakeSnapshotClient(c)
|
|
fakeExecutionClient := c.containerService.(*servertesting.FakeExecutionClient)
|
|
fakeCNIPlugin := c.netPlugin.(*servertesting.FakeCNIPlugin)
|
|
fakeOS := c.os.(*ostesting.FakeOS)
|
|
var dirs []string
|
|
var pipes []string
|
|
fakeOS.MkdirAllFn = func(path string, perm os.FileMode) error {
|
|
dirs = append(dirs, path)
|
|
return nil
|
|
}
|
|
fakeOS.OpenFifoFn = func(ctx context.Context, fn string, flag int, perm os.FileMode) (io.ReadWriteCloser, error) {
|
|
pipes = append(pipes, fn)
|
|
assert.Equal(t, syscall.O_RDONLY|syscall.O_CREAT|syscall.O_NONBLOCK, flag)
|
|
assert.Equal(t, os.FileMode(0700), perm)
|
|
return nopReadWriteCloser{}, nil
|
|
}
|
|
testChainID := "test-sandbox-chain-id"
|
|
imageMetadata := metadata.ImageMetadata{
|
|
ID: testSandboxImage,
|
|
ChainID: testChainID,
|
|
Config: imageConfig,
|
|
}
|
|
// Insert sandbox image metadata.
|
|
assert.NoError(t, c.imageMetadataStore.Create(imageMetadata))
|
|
expectSnapshotClientCalls := []string{"view"}
|
|
expectExecutionClientCalls := []string{"create", "start"}
|
|
|
|
res, err := c.RunPodSandbox(context.Background(), &runtime.RunPodSandboxRequest{Config: config})
|
|
assert.NoError(t, err)
|
|
require.NotNil(t, res)
|
|
id := res.GetPodSandboxId()
|
|
|
|
sandboxRootDir := getSandboxRootDir(c.rootDir, id)
|
|
assert.Contains(t, dirs[0], sandboxRootDir, "sandbox root directory should be created")
|
|
|
|
assert.Len(t, pipes, 2)
|
|
_, stdout, stderr := getStreamingPipes(sandboxRootDir)
|
|
assert.Contains(t, pipes, stdout, "sandbox stdout pipe should be created")
|
|
assert.Contains(t, pipes, stderr, "sandbox stderr pipe should be created")
|
|
|
|
assert.Equal(t, expectSnapshotClientCalls, fakeSnapshotClient.GetCalledNames(), "expect snapshot functions should be called")
|
|
calls := fakeSnapshotClient.GetCalledDetails()
|
|
prepareOpts := calls[0].Argument.(*snapshotapi.PrepareRequest)
|
|
assert.Equal(t, &snapshotapi.PrepareRequest{
|
|
Key: id,
|
|
Parent: testChainID,
|
|
}, prepareOpts, "prepare request should be correct")
|
|
|
|
assert.Equal(t, expectExecutionClientCalls, fakeExecutionClient.GetCalledNames(), "expect containerd functions should be called")
|
|
calls = fakeExecutionClient.GetCalledDetails()
|
|
createOpts := calls[0].Argument.(*execution.CreateRequest)
|
|
assert.Equal(t, id, createOpts.ContainerID, "create id should be correct")
|
|
assert.Equal(t, stdout, createOpts.Stdout, "stdout pipe should be passed to containerd")
|
|
assert.Equal(t, stderr, createOpts.Stderr, "stderr pipe should be passed to containerd")
|
|
mountsResp, err := fakeSnapshotClient.Mounts(context.Background(), &snapshotapi.MountsRequest{Key: id})
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, mountsResp.Mounts, createOpts.Rootfs, "rootfs mount should be correct")
|
|
|
|
// TODO: Need to create container first.. see Create in containerd/containerd/apsi/services/containers spec is no longer in the create request
|
|
//spec := &runtimespec.Spec{}
|
|
//assert.NoError(t, json.Unmarshal(createOpts.Spec.Value, spec))
|
|
//t.Logf("oci spec check")
|
|
//specCheck(t, id, spec)
|
|
|
|
startID := calls[1].Argument.(*execution.StartRequest).ContainerID
|
|
assert.Equal(t, id, startID, "start id should be correct")
|
|
|
|
meta, err := c.sandboxStore.Get(id)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, id, meta.ID, "metadata id should be correct")
|
|
err = c.sandboxNameIndex.Reserve(meta.Name, "random-id")
|
|
assert.Error(t, err, "metadata name should be reserved")
|
|
assert.Equal(t, config, meta.Config, "metadata config should be correct")
|
|
// TODO(random-liu): [P2] Add clock interface and use fake clock.
|
|
assert.NotZero(t, meta.CreatedAt, "metadata CreatedAt should be set")
|
|
info, err := fakeExecutionClient.Info(context.Background(), &execution.InfoRequest{ContainerID: id})
|
|
assert.NoError(t, err)
|
|
pid := info.Task.Pid
|
|
assert.Equal(t, meta.NetNS, getNetworkNamespace(pid), "metadata network namespace should be correct")
|
|
|
|
gotID, err := c.sandboxIDIndex.Get(id)
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, id, gotID, "sandbox id should be indexed")
|
|
|
|
expectedCNICalls := []string{"SetUpPod"}
|
|
assert.Equal(t, expectedCNICalls, fakeCNIPlugin.GetCalledNames(), "expect SetUpPod should be called")
|
|
calls = fakeCNIPlugin.GetCalledDetails()
|
|
pluginArgument := calls[0].Argument.(servertesting.CNIPluginArgument)
|
|
expectedPluginArgument := servertesting.CNIPluginArgument{
|
|
NetnsPath: meta.NetNS,
|
|
Namespace: config.GetMetadata().GetNamespace(),
|
|
Name: config.GetMetadata().GetName(),
|
|
ContainerID: id,
|
|
}
|
|
assert.Equal(t, expectedPluginArgument, pluginArgument, "SetUpPod should be called with correct arguments")
|
|
}
|
|
|
|
func TestParseDNSOption(t *testing.T) {
|
|
for desc, test := range map[string]struct {
|
|
servers []string
|
|
searches []string
|
|
options []string
|
|
expectedContent string
|
|
expectErr bool
|
|
}{
|
|
"empty dns options should return empty content": {},
|
|
"non-empty dns options should return correct content": {
|
|
servers: []string{"8.8.8.8", "server.google.com"},
|
|
searches: []string{"114.114.114.114"},
|
|
options: []string{"timeout:1"},
|
|
expectedContent: `search 114.114.114.114
|
|
nameserver 8.8.8.8
|
|
nameserver server.google.com
|
|
options timeout:1
|
|
`,
|
|
},
|
|
"should return error if dns search exceeds limit(6)": {
|
|
searches: []string{
|
|
"server0.google.com",
|
|
"server1.google.com",
|
|
"server2.google.com",
|
|
"server3.google.com",
|
|
"server4.google.com",
|
|
"server5.google.com",
|
|
"server6.google.com",
|
|
},
|
|
expectErr: true,
|
|
},
|
|
} {
|
|
t.Logf("TestCase %q", desc)
|
|
resolvContent, err := parseDNSOptions(test.servers, test.searches, test.options)
|
|
if test.expectErr {
|
|
assert.Error(t, err)
|
|
continue
|
|
}
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, resolvContent, test.expectedContent)
|
|
}
|
|
}
|
|
|
|
// TODO(random-liu): [P1] Add unit test for different error cases to make sure
|
|
// the function cleans up on error properly.
|