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Merge pull request #3004 from crosbymichael/multi-shim

Browse Source 
io.containerd.runc.v2 with Container Groups
This commit is contained in:
Michael Crosby
2019-02-21 15:40:20 -05:00
committed by GitHub
parent 31438b61f9 84a24711e8
commit 07697638be
26 changed files with 1558 additions and 449 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
.travis.yml
View File

@@ -28,6 +28,7 @@ addons:
env:
- TRAVIS_GOOS=linux TEST_RUNTIME=io.containerd.runc.v1 TRAVIS_CGO_ENABLED=1
- TRAVIS_GOOS=linux TEST_RUNTIME=io.containerd.runc.v2 TRAVIS_CGO_ENABLED=1
- TRAVIS_GOOS=linux TEST_RUNTIME=io.containerd.runtime.v1.linux TRAVIS_CGO_ENABLED=1
- TRAVIS_GOOS=darwin TRAVIS_CGO_ENABLED=0

4
Makefile
View File

@@ -189,6 +189,10 @@ bin/containerd-shim-runc-v1: cmd/containerd-shim-runc-v1 FORCE # set !cgo and om
@echo "$(WHALE) bin/containerd-shim-runc-v1"
@CGO_ENABLED=0 go build ${GO_BUILD_FLAGS} -o bin/containerd-shim-runc-v1 ${SHIM_GO_LDFLAGS} ${GO_TAGS} ./cmd/containerd-shim-runc-v1
bin/containerd-shim-runc-v2: cmd/containerd-shim-runc-v2 FORCE # set !cgo and omit pie for a static shim build: https://github.com/golang/go/issues/17789#issuecomment-258542220
@echo "$(WHALE) bin/containerd-shim-runc-v2"
@CGO_ENABLED=0 go build ${GO_BUILD_FLAGS} -o bin/containerd-shim-runc-v2 ${SHIM_GO_LDFLAGS} ${GO_TAGS} ./cmd/containerd-shim-runc-v2
bin/containerd-shim-runhcs-v1: cmd/containerd-shim-runhcs-v1 FORCE # set !cgo and omit pie for a static shim build: https://github.com/golang/go/issues/17789#issuecomment-258542220
@echo "$(WHALE) bin/containerd-shim-runhcs-v1${BINARY_SUFFIX}"
@CGO_ENABLED=0 go build ${GO_BUILD_FLAGS} -o bin/containerd-shim-runhcs-v1${BINARY_SUFFIX} ${SHIM_GO_LDFLAGS} ${GO_TAGS} ./cmd/containerd-shim-runhcs-v1

2
Makefile.linux
View File

@@ -16,7 +16,7 @@
#linux specific settings
WHALE="+"
ONI="-"
COMMANDS += containerd-shim containerd-shim-runc-v1
COMMANDS += containerd-shim containerd-shim-runc-v1 containerd-shim-runc-v2
# check GOOS for cross compile builds
ifeq ($(GOOS),linux)

18
client.go
View File

@@ -24,6 +24,7 @@ import (
"net/http"
"runtime"
"strconv"
"strings"
"sync"
"time"
@@ -614,3 +615,20 @@ func (c *Client) Version(ctx context.Context) (Version, error) {
Revision: response.Revision,
}, nil
}
// CheckRuntime returns true if the current runtime matches the expected
// runtime. Providing various parts of the runtime schema will match those
// parts of the expected runtime
func CheckRuntime(current, expected string) bool {
cp := strings.Split(current, ".")
l := len(cp)
for i, p := range strings.Split(expected, ".") {
if i > l {
return false
}
if p != cp[i] {
return false
}
}
return true
}

1
client_test.go
View File

@@ -124,6 +124,7 @@ func TestMain(m *testing.M) {
log.G(ctx).WithFields(logrus.Fields{
"version": version.Version,
"revision": version.Revision,
"runtime": os.Getenv("TEST_RUNTIME"),
}).Info("running tests against containerd")
// pull a seed image

4
cmd/containerd-shim-runc-v1/main.go
View File

@@ -19,10 +19,10 @@
package main
import (
"github.com/containerd/containerd/runtime/v2/runc"
"github.com/containerd/containerd/runtime/v2/runc/v1"
"github.com/containerd/containerd/runtime/v2/shim"
)
func main() {
shim.Run("io.containerd.runc.v1", runc.New)
shim.Run("io.containerd.runc.v1", v1.New)
}

28
cmd/containerd-shim-runc-v2/main.go Normal file
View File

@@ -0,0 +1,28 @@
// +build linux
/*
Copyright The containerd 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 main
import (
"github.com/containerd/containerd/runtime/v2/runc/v2"
"github.com/containerd/containerd/runtime/v2/shim"
)
func main() {
shim.Run("io.containerd.runc.v2", v2.New)
}

3
cmd/containerd-stress/main.go
View File

@@ -30,6 +30,7 @@ import (
"github.com/containerd/containerd"
"github.com/containerd/containerd/namespaces"
"github.com/containerd/containerd/plugin"
metrics "github.com/docker/go-metrics"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
@@ -146,7 +147,7 @@ func main() {
cli.StringFlag{
Name: "runtime",
Usage: "set the runtime to stress test",
Value: "io.containerd.runtime.v1.linux",
Value: plugin.RuntimeLinuxV1,
},
}
app.Before = func(context *cli.Context) error {

1
cmd/ctr/commands/run/run_unix.go
View File

@@ -147,6 +147,7 @@ func NewContainer(ctx gocontext.Context, client *containerd.Client, context *cli
cOpts = append(cOpts, containerd.WithRuntime(context.String("runtime"), nil))
opts = append(opts, oci.WithAnnotations(commands.LabelArgs(context.StringSlice("label"))))
var s specs.Spec
spec = containerd.WithSpec(&s, opts...)

5
cmd/ctr/commands/tasks/checkpoint.go
View File

@@ -21,6 +21,7 @@ import (
"github.com/containerd/containerd"
"github.com/containerd/containerd/cmd/ctr/commands"
"github.com/containerd/containerd/plugin"
"github.com/containerd/containerd/runtime/linux/runctypes"
"github.com/containerd/containerd/runtime/v2/runc/options"
"github.com/pkg/errors"
@@ -86,7 +87,7 @@ func withCheckpointOpts(rt string, context *cli.Context) containerd.CheckpointTa
workPath := context.String("work-path")
switch rt {
case "io.containerd.runc.v1":
case plugin.RuntimeRuncV1, plugin.RuntimeRuncV2:
if r.Options == nil {
r.Options = &options.CheckpointOptions{}
}
@@ -101,7 +102,7 @@ func withCheckpointOpts(rt string, context *cli.Context) containerd.CheckpointTa
if workPath != "" {
opts.WorkPath = workPath
}
case "io.containerd.runtime.v1.linux":
case plugin.RuntimeLinuxV1:
if r.Options == nil {
r.Options = &runctypes.CheckpointOptions{}
}

9
container_checkpoint_test.go
View File

@@ -32,6 +32,7 @@ import (
"github.com/containerd/containerd/cio"
"github.com/containerd/containerd/oci"
"github.com/containerd/containerd/plugin"
)
const (
@@ -47,7 +48,7 @@ func TestCheckpointRestorePTY(t *testing.T) {
t.Fatal(err)
}
defer client.Close()
if client.runtime == v1runtime {
if client.runtime == plugin.RuntimeLinuxV1 {
t.Skip()
}
@@ -173,7 +174,7 @@ func TestCheckpointRestore(t *testing.T) {
t.Fatal(err)
}
defer client.Close()
if client.runtime == v1runtime {
if client.runtime == plugin.RuntimeLinuxV1 {
t.Skip()
}
@@ -263,7 +264,7 @@ func TestCheckpointRestoreNewContainer(t *testing.T) {
t.Fatal(err)
}
defer client.Close()
if client.runtime == v1runtime {
if client.runtime == plugin.RuntimeLinuxV1 {
t.Skip()
}
@@ -353,7 +354,7 @@ func TestCheckpointLeaveRunning(t *testing.T) {
t.Fatal(err)
}
defer client.Close()
if client.runtime == v1runtime {
if client.runtime == plugin.RuntimeLinuxV1 {
t.Skip()
}

13
container_linux_test.go
View File

@@ -39,6 +39,7 @@ import (
"github.com/containerd/containerd/containers"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/oci"
"github.com/containerd/containerd/plugin"
"github.com/containerd/containerd/runtime/linux/runctypes"
"github.com/containerd/containerd/runtime/v2/runc/options"
specs "github.com/opencontainers/runtime-spec/specs-go"
@@ -132,7 +133,7 @@ func TestShimInCgroup(t *testing.T) {
t.Fatal(err)
}
defer client.Close()
if client.runtime == "io.containerd.runc.v1" {
if CheckRuntime(client.runtime, "io.containerd.runc") {
t.Skip()
}
@@ -450,7 +451,7 @@ func writeToFile(t *testing.T, filePath, message string) {
func getLogDirPath(runtimeVersion, id string) string {
switch runtimeVersion {
case "v1":
return filepath.Join(defaultRoot, "io.containerd.runtime.v1.linux", testNamespace, id)
return filepath.Join(defaultRoot, plugin.RuntimeLinuxV1, testNamespace, id)
case "v2":
return filepath.Join(defaultState, "io.containerd.runtime.v2.task", testNamespace, id)
default:
@@ -460,7 +461,7 @@ func getLogDirPath(runtimeVersion, id string) string {
func getRuntimeVersion() string {
switch rt := os.Getenv("TEST_RUNTIME"); rt {
case "io.containerd.runc.v1":
case plugin.RuntimeRuncV1, plugin.RuntimeRuncV2:
return "v2"
default:
return "v1"
@@ -1188,7 +1189,7 @@ func TestContainerRuntimeOptionsv1(t *testing.T) {
ctx, id,
WithNewSnapshot(id, image),
WithNewSpec(oci.WithImageConfig(image), withExitStatus(7)),
WithRuntime("io.containerd.runtime.v1.linux", &runctypes.RuncOptions{Runtime: "no-runc"}),
WithRuntime(plugin.RuntimeLinuxV1, &runctypes.RuncOptions{Runtime: "no-runc"}),
)
if err != nil {
t.Fatal(err)
@@ -1231,7 +1232,7 @@ func TestContainerRuntimeOptionsv2(t *testing.T) {
ctx, id,
WithNewSnapshot(id, image),
WithNewSpec(oci.WithImageConfig(image), withExitStatus(7)),
WithRuntime("io.containerd.runc.v1", &options.Options{BinaryName: "no-runc"}),
WithRuntime(plugin.RuntimeRuncV1, &options.Options{BinaryName: "no-runc"}),
)
if err != nil {
t.Fatal(err)
@@ -1384,7 +1385,7 @@ func testUserNamespaces(t *testing.T, readonlyRootFS bool) {
defer container.Delete(ctx, WithSnapshotCleanup)
var copts interface{}
if client.runtime == "io.containerd.runc.v1" {
if CheckRuntime(client.runtime, "io.containerd.runc") {
copts = &options.Options{
IoUid: 1000,
IoGid: 1000,

3
daemon_config_linux_test.go
View File

@@ -29,6 +29,7 @@ import (
"github.com/containerd/containerd/oci"
"github.com/containerd/containerd/pkg/testutil"
"github.com/containerd/containerd/plugin"
"github.com/containerd/containerd/runtime/v2/runc/options"
srvconfig "github.com/containerd/containerd/services/server/config"
)
@@ -140,7 +141,7 @@ func TestDaemonRuntimeRoot(t *testing.T) {
}
id := t.Name()
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), withProcessArgs("top")), WithRuntime("io.containerd.runc.v1", &options.Options{
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), withProcessArgs("top")), WithRuntime(plugin.RuntimeRuncV1, &options.Options{
Root: runtimeRoot,
}))
if err != nil {

14
oci/spec_opts.go
View File

@@ -1063,3 +1063,17 @@ func WithMemoryLimit(limit uint64) SpecOpts {
return nil
}
}
// WithAnnotations appends or replaces the annotations on the spec with the
// provided annotations
func WithAnnotations(annotations map[string]string) SpecOpts {
return func(_ context.Context, _ Client, _ *containers.Container, s *Spec) error {
if s.Annotations == nil {
s.Annotations = make(map[string]string)
}
for k, v := range annotations {
s.Annotations[k] = v
}
return nil
}
}

9
plugin/plugin.go
View File

@@ -75,6 +75,15 @@ const (
GCPlugin Type = "io.containerd.gc.v1"
)
const (
// RuntimeLinuxV1 is the legacy linux runtime
RuntimeLinuxV1 = "io.containerd.runtime.v1.linux"
// RuntimeRuncV1 is the runc runtime that supports a single container
RuntimeRuncV1 = "io.containerd.runc.v1"
// RuntimeRuncV2 is the runc runtime that supports multiple containers per shim
RuntimeRuncV2 = "io.containerd.runc.v2"
)
// Registration contains information for registering a plugin
type Registration struct {
// Type of the plugin

415
runtime/v2/runc/container.go Normal file
View File

@@ -0,0 +1,415 @@
// +build linux
/*
Copyright The containerd 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 runc
import (
"context"
"io/ioutil"
"path/filepath"
"sync"
"github.com/containerd/cgroups"
"github.com/containerd/console"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/mount"
"github.com/containerd/containerd/namespaces"
rproc "github.com/containerd/containerd/runtime/proc"
"github.com/containerd/containerd/runtime/v1/linux/proc"
"github.com/containerd/containerd/runtime/v2/runc/options"
"github.com/containerd/containerd/runtime/v2/task"
"github.com/containerd/typeurl"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// NewContainer returns a new runc container
func NewContainer(ctx context.Context, platform rproc.Platform, r *task.CreateTaskRequest) (*Container, error) {
ns, err := namespaces.NamespaceRequired(ctx)
if err != nil {
return nil, errors.Wrap(err, "create namespace")
}
var opts options.Options
if r.Options != nil {
v, err := typeurl.UnmarshalAny(r.Options)
if err != nil {
return nil, err
}
opts = *v.(*options.Options)
}
var mounts []proc.Mount
for _, m := range r.Rootfs {
mounts = append(mounts, proc.Mount{
Type: m.Type,
Source: m.Source,
Target: m.Target,
Options: m.Options,
})
}
config := &proc.CreateConfig{
ID: r.ID,
Bundle: r.Bundle,
Runtime: opts.BinaryName,
Rootfs: mounts,
Terminal: r.Terminal,
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Checkpoint: r.Checkpoint,
ParentCheckpoint: r.ParentCheckpoint,
Options: r.Options,
}
if err := WriteRuntime(r.Bundle, opts.BinaryName); err != nil {
return nil, err
}
rootfs := filepath.Join(r.Bundle, "rootfs")
defer func() {
if err != nil {
if err2 := mount.UnmountAll(rootfs, 0); err2 != nil {
logrus.WithError(err2).Warn("failed to cleanup rootfs mount")
}
}
}()
for _, rm := range mounts {
m := &mount.Mount{
Type: rm.Type,
Source: rm.Source,
Options: rm.Options,
}
if err := m.Mount(rootfs); err != nil {
return nil, errors.Wrapf(err, "failed to mount rootfs component %v", m)
}
}
process, err := newInit(
ctx,
r.Bundle,
filepath.Join(r.Bundle, "work"),
ns,
platform,
config,
&opts,
)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
if err := process.Create(ctx, config); err != nil {
return nil, errdefs.ToGRPC(err)
}
container := &Container{
ID: r.ID,
Bundle: r.Bundle,
process: process,
processes: make(map[string]rproc.Process),
}
pid := process.Pid()
if pid > 0 {
cg, err := cgroups.Load(cgroups.V1, cgroups.PidPath(pid))
if err != nil {
logrus.WithError(err).Errorf("loading cgroup for %d", pid)
}
container.cgroup = cg
}
return container, nil
}
// ReadRuntime reads the runtime information from the path
func ReadRuntime(path string) (string, error) {
data, err := ioutil.ReadFile(filepath.Join(path, "runtime"))
if err != nil {
return "", err
}
return string(data), nil
}
// WriteRuntime writes the runtime information into the path
func WriteRuntime(path, runtime string) error {
return ioutil.WriteFile(filepath.Join(path, "runtime"), []byte(runtime), 0600)
}
func newInit(ctx context.Context, path, workDir, namespace string, platform rproc.Platform,
r *proc.CreateConfig, options *options.Options) (*proc.Init, error) {
rootfs := filepath.Join(path, "rootfs")
runtime := proc.NewRunc(options.Root, path, namespace, options.BinaryName, options.CriuPath, options.SystemdCgroup)
p := proc.New(r.ID, runtime, rproc.Stdio{
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Terminal: r.Terminal,
})
p.Bundle = r.Bundle
p.Platform = platform
p.Rootfs = rootfs
p.WorkDir = workDir
p.IoUID = int(options.IoUid)
p.IoGID = int(options.IoGid)
p.NoPivotRoot = options.NoPivotRoot
p.NoNewKeyring = options.NoNewKeyring
p.CriuWorkPath = options.CriuWorkPath
if p.CriuWorkPath == "" {
// if criu work path not set, use container WorkDir
p.CriuWorkPath = p.WorkDir
}
return p, nil
}
// Container for operating on a runc container and its processes
type Container struct {
mu sync.Mutex
// ID of the container
ID string
// Bundle path
Bundle string
cgroup cgroups.Cgroup
process rproc.Process
processes map[string]rproc.Process
}
// All processes in the container
func (c *Container) All() (o []rproc.Process) {
c.mu.Lock()
defer c.mu.Unlock()
for _, p := range c.processes {
o = append(o, p)
}
if c.process != nil {
o = append(o, c.process)
}
return o
}
// ExecdProcesses added to the container
func (c *Container) ExecdProcesses() (o []rproc.Process) {
c.mu.Lock()
defer c.mu.Unlock()
for _, p := range c.processes {
o = append(o, p)
}
return o
}
// Pid of the main process of a container
func (c *Container) Pid() int {
c.mu.Lock()
defer c.mu.Unlock()
return c.process.Pid()
}
// Cgroup of the container
func (c *Container) Cgroup() cgroups.Cgroup {
c.mu.Lock()
defer c.mu.Unlock()
return c.cgroup
}
// CgroupSet sets the cgroup to the container
func (c *Container) CgroupSet(cg cgroups.Cgroup) {
c.mu.Lock()
c.cgroup = cg
c.mu.Unlock()
}
// Process returns the process by id
func (c *Container) Process(id string) (rproc.Process, error) {
c.mu.Lock()
defer c.mu.Unlock()
if id == "" {
if c.process == nil {
return nil, errors.Wrapf(errdefs.ErrFailedPrecondition, "container must be created")
}
return c.process, nil
}
p, ok := c.processes[id]
if !ok {
return nil, errors.Wrapf(errdefs.ErrNotFound, "process does not exist %s", id)
}
return p, nil
}
// ProcessExists returns true if the process by id exists
func (c *Container) ProcessExists(id string) bool {
c.mu.Lock()
defer c.mu.Unlock()
_, ok := c.processes[id]
return ok
}
// ProcessAdd adds a new process to the container
func (c *Container) ProcessAdd(process rproc.Process) {
c.mu.Lock()
defer c.mu.Unlock()
c.processes[process.ID()] = process
}
// ProcessRemove removes the process by id from the container
func (c *Container) ProcessRemove(id string) {
c.mu.Lock()
defer c.mu.Unlock()
delete(c.processes, id)
}
// Start a container process
func (c *Container) Start(ctx context.Context, r *task.StartRequest) (rproc.Process, error) {
p, err := c.Process(r.ExecID)
if err != nil {
return nil, err
}
if err := p.Start(ctx); err != nil {
return nil, err
}
if c.Cgroup() == nil && p.Pid() > 0 {
cg, err := cgroups.Load(cgroups.V1, cgroups.PidPath(p.Pid()))
if err != nil {
logrus.WithError(err).Errorf("loading cgroup for %d", p.Pid())
}
c.cgroup = cg
}
return p, nil
}
// Delete the container or a process by id
func (c *Container) Delete(ctx context.Context, r *task.DeleteRequest) (rproc.Process, error) {
p, err := c.Process(r.ExecID)
if err != nil {
return nil, err
}
if err := p.Delete(ctx); err != nil {
return nil, err
}
if r.ExecID != "" {
c.ProcessRemove(r.ExecID)
}
return p, nil
}
// Exec an additional process
func (c *Container) Exec(ctx context.Context, r *task.ExecProcessRequest) (rproc.Process, error) {
process, err := c.process.(*proc.Init).Exec(ctx, c.Bundle, &proc.ExecConfig{
ID: r.ExecID,
Terminal: r.Terminal,
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Spec: r.Spec,
})
if err != nil {
return nil, err
}
c.ProcessAdd(process)
return process, nil
}
// Pause the container
func (c *Container) Pause(ctx context.Context) error {
return c.process.(*proc.Init).Pause(ctx)
}
// Resume the container
func (c *Container) Resume(ctx context.Context) error {
return c.process.(*proc.Init).Resume(ctx)
}
// ResizePty of a process
func (c *Container) ResizePty(ctx context.Context, r *task.ResizePtyRequest) error {
p, err := c.Process(r.ExecID)
if err != nil {
return err
}
ws := console.WinSize{
Width: uint16(r.Width),
Height: uint16(r.Height),
}
return p.Resize(ws)
}
// Kill a process
func (c *Container) Kill(ctx context.Context, r *task.KillRequest) error {
p, err := c.Process(r.ExecID)
if err != nil {
return err
}
return p.Kill(ctx, r.Signal, r.All)
}
// CloseIO of a process
func (c *Container) CloseIO(ctx context.Context, r *task.CloseIORequest) error {
p, err := c.Process(r.ExecID)
if err != nil {
return err
}
if stdin := p.Stdin(); stdin != nil {
if err := stdin.Close(); err != nil {
return errors.Wrap(err, "close stdin")
}
}
return nil
}
// Checkpoint the container
func (c *Container) Checkpoint(ctx context.Context, r *task.CheckpointTaskRequest) error {
p, err := c.Process("")
if err != nil {
return err
}
var opts options.CheckpointOptions
if r.Options != nil {
v, err := typeurl.UnmarshalAny(r.Options)
if err != nil {
return err
}
opts = *v.(*options.CheckpointOptions)
}
return p.(*proc.Init).Checkpoint(ctx, &proc.CheckpointConfig{
Path: r.Path,
Exit: opts.Exit,
AllowOpenTCP: opts.OpenTcp,
AllowExternalUnixSockets: opts.ExternalUnixSockets,
AllowTerminal: opts.Terminal,
FileLocks: opts.FileLocks,
EmptyNamespaces: opts.EmptyNamespaces,
WorkDir: opts.WorkPath,
})
}
// Update the resource information of a running container
func (c *Container) Update(ctx context.Context, r *task.UpdateTaskRequest) error {
p, err := c.Process("")
if err != nil {
return err
}
return p.(*proc.Init).Update(ctx, r.Resources)
}
// HasPid returns true if the container owns a specific pid
func (c *Container) HasPid(pid int) bool {
if c.Pid() == pid {
return true
}
for _, p := range c.All() {
if p.Pid() == pid {
return true
}
}
return false
}

20
runtime/v2/runc/epoll.go
View File

@@ -30,19 +30,22 @@ import (
"golang.org/x/sys/unix"
)
func newOOMEpoller(publisher events.Publisher) (*epoller, error) {
// NewOOMEpoller returns an epoll implementation that listens to OOM events
// from a container's cgroups.
func NewOOMEpoller(publisher events.Publisher) (*Epoller, error) {
fd, err := unix.EpollCreate1(unix.EPOLL_CLOEXEC)
if err != nil {
return nil, err
}
return &epoller{
return &Epoller{
fd: fd,
publisher: publisher,
set: make(map[uintptr]*item),
}, nil
}
type epoller struct {
// Epoller implementation for handling OOM events from a container's cgroup
type Epoller struct {
mu sync.Mutex
fd int
@@ -55,11 +58,13 @@ type item struct {
cg cgroups.Cgroup
}
func (e *epoller) Close() error {
// Close the epoll fd
func (e *Epoller) Close() error {
return unix.Close(e.fd)
}
func (e *epoller) run(ctx context.Context) {
// Run the epoll loop
func (e *Epoller) Run(ctx context.Context) {
var events [128]unix.EpollEvent
for {
select {
@@ -81,7 +86,8 @@ func (e *epoller) run(ctx context.Context) {
}
}
func (e *epoller) add(id string, cg cgroups.Cgroup) error {
// Add the cgroup to the epoll monitor
func (e *Epoller) Add(id string, cg cgroups.Cgroup) error {
e.mu.Lock()
defer e.mu.Unlock()
fd, err := cg.OOMEventFD()
@@ -99,7 +105,7 @@ func (e *epoller) add(id string, cg cgroups.Cgroup) error {
return unix.EpollCtl(e.fd, unix.EPOLL_CTL_ADD, int(fd), &event)
}
func (e *epoller) process(ctx context.Context, fd uintptr) {
func (e *Epoller) process(ctx context.Context, fd uintptr) {
flush(fd)
e.mu.Lock()
i, ok := e.set[fd]

45
runtime/v2/runc/service_linux.go → runtime/v2/runc/platform.go
View File

@@ -1,3 +1,5 @@
// +build linux
/*
Copyright The containerd Authors.
@@ -23,10 +25,30 @@ import (
"syscall"
"github.com/containerd/console"
rproc "github.com/containerd/containerd/runtime/proc"
"github.com/containerd/fifo"
"github.com/pkg/errors"
)
var bufPool = sync.Pool{
New: func() interface{} {
buffer := make([]byte, 32<<10)
return &buffer
},
}
// NewPlatform returns a linux platform for use with I/O operations
func NewPlatform() (rproc.Platform, error) {
epoller, err := console.NewEpoller()
if err != nil {
return nil, errors.Wrap(err, "failed to initialize epoller")
}
go epoller.Wait()
return &linuxPlatform{
epoller: epoller,
}, nil
}
type linuxPlatform struct {
epoller *console.Epoller
}
@@ -69,9 +91,9 @@ func (p *linuxPlatform) CopyConsole(ctx context.Context, console console.Console
cwg.Add(1)
go func() {
cwg.Done()
p := bufPool.Get().(*[]byte)
defer bufPool.Put(p)
io.CopyBuffer(outw, epollConsole, *p)
buf := bufPool.Get().(*[]byte)
defer bufPool.Put(buf)
io.CopyBuffer(outw, epollConsole, *buf)
epollConsole.Close()
outr.Close()
outw.Close()
@@ -94,20 +116,3 @@ func (p *linuxPlatform) ShutdownConsole(ctx context.Context, cons console.Consol
func (p *linuxPlatform) Close() error {
return p.epoller.Close()
}
// initialize a single epoll fd to manage our consoles. `initPlatform` should
// only be called once.
func (s *service) initPlatform() error {
if s.platform != nil {
return nil
}
epoller, err := console.NewEpoller()
if err != nil {
return errors.Wrap(err, "failed to initialize epoller")
}
s.platform = &linuxPlatform{
epoller: epoller,
}
go epoller.Wait()
return nil
}

55
runtime/v2/runc/util.go Normal file
View File

@@ -0,0 +1,55 @@
// +build linux
/*
Copyright The containerd 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 runc
import (
"github.com/containerd/containerd/api/events"
"github.com/containerd/containerd/runtime"
"github.com/sirupsen/logrus"
)
// GetTopic converts an event from an interface type to the specific
// event topic id
func GetTopic(e interface{}) string {
switch e.(type) {
case *events.TaskCreate:
return runtime.TaskCreateEventTopic
case *events.TaskStart:
return runtime.TaskStartEventTopic
case *events.TaskOOM:
return runtime.TaskOOMEventTopic
case *events.TaskExit:
return runtime.TaskExitEventTopic
case *events.TaskDelete:
return runtime.TaskDeleteEventTopic
case *events.TaskExecAdded:
return runtime.TaskExecAddedEventTopic
case *events.TaskExecStarted:
return runtime.TaskExecStartedEventTopic
case *events.TaskPaused:
return runtime.TaskPausedEventTopic
case *events.TaskResumed:
return runtime.TaskResumedEventTopic
case *events.TaskCheckpointed:
return runtime.TaskCheckpointedEventTopic
default:
logrus.Warnf("no topic for type %#v", e)
}
return runtime.TaskUnknownTopic
}

490
runtime/v2/runc/service.go → runtime/v2/runc/v1/service.go
View File

@@ -16,7 +16,7 @@
limitations under the License.
*/
package runc
package v1
import (
"context"
@@ -30,7 +30,6 @@ import (
"time"
"github.com/containerd/cgroups"
"github.com/containerd/console"
eventstypes "github.com/containerd/containerd/api/events"
"github.com/containerd/containerd/api/types/task"
"github.com/containerd/containerd/errdefs"
@@ -38,9 +37,9 @@ import (
"github.com/containerd/containerd/log"
"github.com/containerd/containerd/mount"
"github.com/containerd/containerd/namespaces"
"github.com/containerd/containerd/runtime"
rproc "github.com/containerd/containerd/runtime/proc"
"github.com/containerd/containerd/runtime/v1/linux/proc"
"github.com/containerd/containerd/runtime/v2/runc"
"github.com/containerd/containerd/runtime/v2/runc/options"
"github.com/containerd/containerd/runtime/v2/shim"
taskAPI "github.com/containerd/containerd/runtime/v2/task"
@@ -54,29 +53,21 @@ import (
)
var (
_ = (taskAPI.TaskService)(&service{})
empty = &ptypes.Empty{}
bufPool = sync.Pool{
New: func() interface{} {
buffer := make([]byte, 32<<10)
return &buffer
},
}
)
var _ = (taskAPI.TaskService)(&service{})
// New returns a new shim service that can be used via GRPC
func New(ctx context.Context, id string, publisher events.Publisher) (shim.Shim, error) {
ep, err := newOOMEpoller(publisher)
ep, err := runc.NewOOMEpoller(publisher)
if err != nil {
return nil, err
}
ctx, cancel := context.WithCancel(ctx)
go ep.run(ctx)
go ep.Run(ctx)
s := &service{
id: id,
context: ctx,
processes: make(map[string]rproc.Process),
events: make(chan interface{}, 128),
ec: shim.Default.Subscribe(),
ep: ep,
@@ -98,16 +89,14 @@ type service struct {
eventSendMu sync.Mutex
context context.Context
task rproc.Process
processes map[string]rproc.Process
events chan interface{}
platform rproc.Platform
ec chan runcC.Exit
ep *epoller
ep *runc.Epoller
id string
bundle string
cg cgroups.Cgroup
container *runc.Container
cancel func()
}
@@ -192,7 +181,7 @@ func (s *service) Cleanup(ctx context.Context) (*taskAPI.DeleteResponse, error)
if err != nil {
return nil, err
}
runtime, err := s.readRuntime(path)
runtime, err := runc.ReadRuntime(path)
if err != nil {
return nil, err
}
@@ -211,107 +200,17 @@ func (s *service) Cleanup(ctx context.Context) (*taskAPI.DeleteResponse, error)
}, nil
}
func (s *service) readRuntime(path string) (string, error) {
data, err := ioutil.ReadFile(filepath.Join(path, "runtime"))
if err != nil {
return "", err
}
return string(data), nil
}
func (s *service) writeRuntime(path, runtime string) error {
return ioutil.WriteFile(filepath.Join(path, "runtime"), []byte(runtime), 0600)
}
// Create a new initial process and container with the underlying OCI runtime
func (s *service) Create(ctx context.Context, r *taskAPI.CreateTaskRequest) (_ *taskAPI.CreateTaskResponse, err error) {
s.mu.Lock()
defer s.mu.Unlock()
ns, err := namespaces.NamespaceRequired(ctx)
if err != nil {
return nil, errors.Wrap(err, "create namespace")
}
var opts options.Options
if r.Options != nil {
v, err := typeurl.UnmarshalAny(r.Options)
container, err := runc.NewContainer(ctx, s.platform, r)
if err != nil {
return nil, err
}
opts = *v.(*options.Options)
}
var mounts []proc.Mount
for _, m := range r.Rootfs {
mounts = append(mounts, proc.Mount{
Type: m.Type,
Source: m.Source,
Target: m.Target,
Options: m.Options,
})
}
config := &proc.CreateConfig{
ID: r.ID,
Bundle: r.Bundle,
Runtime: opts.BinaryName,
Rootfs: mounts,
Terminal: r.Terminal,
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Checkpoint: r.Checkpoint,
ParentCheckpoint: r.ParentCheckpoint,
Options: r.Options,
}
if err := s.writeRuntime(r.Bundle, opts.BinaryName); err != nil {
return nil, err
}
rootfs := filepath.Join(r.Bundle, "rootfs")
defer func() {
if err != nil {
if err2 := mount.UnmountAll(rootfs, 0); err2 != nil {
logrus.WithError(err2).Warn("failed to cleanup rootfs mount")
}
}
}()
for _, rm := range mounts {
m := &mount.Mount{
Type: rm.Type,
Source: rm.Source,
Options: rm.Options,
}
if err := m.Mount(rootfs); err != nil {
return nil, errors.Wrapf(err, "failed to mount rootfs component %v", m)
}
}
process, err := newInit(
ctx,
r.Bundle,
filepath.Join(r.Bundle, "work"),
ns,
s.platform,
config,
&opts,
)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
if err := process.Create(ctx, config); err != nil {
return nil, errdefs.ToGRPC(err)
}
// save the main task id and bundle to the shim for additional requests
s.id = r.ID
s.bundle = r.Bundle
pid := process.Pid()
if pid > 0 {
cg, err := cgroups.Load(cgroups.V1, cgroups.PidPath(pid))
if err != nil {
logrus.WithError(err).Errorf("loading cgroup for %d", pid)
}
s.cg = cg
}
s.task = process
s.container = container
s.send(&eventstypes.TaskCreate{
ContainerID: r.ID,
@@ -324,46 +223,41 @@ func (s *service) Create(ctx context.Context, r *taskAPI.CreateTaskRequest) (_ *
Terminal: r.Terminal,
},
Checkpoint: r.Checkpoint,
Pid: uint32(pid),
Pid: uint32(container.Pid()),
})
return &taskAPI.CreateTaskResponse{
Pid: uint32(pid),
Pid: uint32(container.Pid()),
}, nil
}
// Start a process
func (s *service) Start(ctx context.Context, r *taskAPI.StartRequest) (*taskAPI.StartResponse, error) {
p, err := s.getProcess(r.ExecID)
container, err := s.getContainer()
if err != nil {
return nil, err
}
// hold the send lock so that the start events are sent before any exit events in the error case
s.eventSendMu.Lock()
if err := p.Start(ctx); err != nil {
s.eventSendMu.Unlock()
return nil, err
}
// case for restore
if s.getCgroup() == nil && p.Pid() > 0 {
cg, err := cgroups.Load(cgroups.V1, cgroups.PidPath(p.Pid()))
p, err := container.Start(ctx, r)
if err != nil {
logrus.WithError(err).Errorf("loading cgroup for %d", p.Pid())
s.eventSendMu.Unlock()
return nil, errdefs.ToGRPC(err)
}
s.setCgroup(cg)
if err := s.ep.Add(container.ID, container.Cgroup()); err != nil {
logrus.WithError(err).Error("add cg to OOM monitor")
}
if r.ExecID != "" {
s.send(&eventstypes.TaskExecStarted{
ContainerID: s.id,
ExecID: r.ExecID,
switch r.ExecID {
case "":
s.send(&eventstypes.TaskStart{
ContainerID: container.ID,
Pid: uint32(p.Pid()),
})
} else {
s.send(&eventstypes.TaskStart{
ContainerID: s.id,
default:
s.send(&eventstypes.TaskExecStarted{
ContainerID: container.ID,
ExecID: r.ExecID,
Pid: uint32(p.Pid()),
})
}
@@ -375,28 +269,21 @@ func (s *service) Start(ctx context.Context, r *taskAPI.StartRequest) (*taskAPI.
// Delete the initial process and container
func (s *service) Delete(ctx context.Context, r *taskAPI.DeleteRequest) (*taskAPI.DeleteResponse, error) {
p, err := s.getProcess(r.ExecID)
container, err := s.getContainer()
if err != nil {
return nil, err
}
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
p, err := container.Delete(ctx, r)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
if err := p.Delete(ctx); err != nil {
return nil, err
}
isTask := r.ExecID == ""
if !isTask {
s.mu.Lock()
delete(s.processes, r.ExecID)
s.mu.Unlock()
}
if isTask {
// if we deleted our init task, close the platform and send the task delete event
if r.ExecID == "" {
if s.platform != nil {
s.platform.Close()
}
s.send(&eventstypes.TaskDelete{
ContainerID: s.id,
ContainerID: container.ID,
Pid: uint32(p.Pid()),
ExitStatus: uint32(p.ExitStatus()),
ExitedAt: p.ExitedAt(),
@@ -411,33 +298,20 @@ func (s *service) Delete(ctx context.Context, r *taskAPI.DeleteRequest) (*taskAP
// Exec an additional process inside the container
func (s *service) Exec(ctx context.Context, r *taskAPI.ExecProcessRequest) (*ptypes.Empty, error) {
s.mu.Lock()
p := s.processes[r.ExecID]
s.mu.Unlock()
if p != nil {
container, err := s.getContainer()
if err != nil {
return nil, err
}
if container.ProcessExists(r.ExecID) {
return nil, errdefs.ToGRPCf(errdefs.ErrAlreadyExists, "id %s", r.ExecID)
}
p = s.task
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
process, err := p.(*proc.Init).Exec(ctx, s.bundle, &proc.ExecConfig{
ID: r.ExecID,
Terminal: r.Terminal,
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Spec: r.Spec,
})
process, err := container.Exec(ctx, r)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
s.mu.Lock()
s.processes[r.ExecID] = process
s.mu.Unlock()
s.send(&eventstypes.TaskExecAdded{
ContainerID: s.id,
ContainerID: s.container.ID,
ExecID: process.ID(),
})
return empty, nil
@@ -445,15 +319,11 @@ func (s *service) Exec(ctx context.Context, r *taskAPI.ExecProcessRequest) (*pty
// ResizePty of a process
func (s *service) ResizePty(ctx context.Context, r *taskAPI.ResizePtyRequest) (*ptypes.Empty, error) {
p, err := s.getProcess(r.ExecID)
container, err := s.getContainer()
if err != nil {
return nil, err
}
ws := console.WinSize{
Width: uint16(r.Width),
Height: uint16(r.Height),
}
if err := p.Resize(ws); err != nil {
if err := container.ResizePty(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
@@ -485,7 +355,7 @@ func (s *service) State(ctx context.Context, r *taskAPI.StateRequest) (*taskAPI.
sio := p.Stdio()
return &taskAPI.StateResponse{
ID: p.ID(),
Bundle: s.bundle,
Bundle: s.container.Bundle,
Pid: uint32(p.Pid()),
Status: status,
Stdin: sio.Stdin,
@@ -499,48 +369,41 @@ func (s *service) State(ctx context.Context, r *taskAPI.StateRequest) (*taskAPI.
// Pause the container
func (s *service) Pause(ctx context.Context, r *taskAPI.PauseRequest) (*ptypes.Empty, error) {
s.mu.Lock()
p := s.task
s.mu.Unlock()
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := p.(*proc.Init).Pause(ctx); err != nil {
container, err := s.getContainer()
if err != nil {
return nil, err
}
if err := container.Pause(ctx); err != nil {
return nil, errdefs.ToGRPC(err)
}
s.send(&eventstypes.TaskPaused{
p.ID(),
container.ID,
})
return empty, nil
}
// Resume the container
func (s *service) Resume(ctx context.Context, r *taskAPI.ResumeRequest) (*ptypes.Empty, error) {
s.mu.Lock()
p := s.task
s.mu.Unlock()
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := p.(*proc.Init).Resume(ctx); err != nil {
container, err := s.getContainer()
if err != nil {
return nil, err
}
if err := container.Resume(ctx); err != nil {
return nil, errdefs.ToGRPC(err)
}
s.send(&eventstypes.TaskResumed{
p.ID(),
container.ID,
})
return empty, nil
}
// Kill a process with the provided signal
func (s *service) Kill(ctx context.Context, r *taskAPI.KillRequest) (*ptypes.Empty, error) {
p, err := s.getProcess(r.ExecID)
container, err := s.getContainer()
if err != nil {
return nil, err
}
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := p.Kill(ctx, r.Signal, r.All); err != nil {
if err := container.Kill(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
@@ -548,6 +411,10 @@ func (s *service) Kill(ctx context.Context, r *taskAPI.KillRequest) (*ptypes.Emp
// Pids returns all pids inside the container
func (s *service) Pids(ctx context.Context, r *taskAPI.PidsRequest) (*taskAPI.PidsResponse, error) {
container, err := s.getContainer()
if err != nil {
return nil, err
}
pids, err := s.getContainerPids(ctx, r.ID)
if err != nil {
return nil, errdefs.ToGRPC(err)
@@ -557,7 +424,7 @@ func (s *service) Pids(ctx context.Context, r *taskAPI.PidsRequest) (*taskAPI.Pi
pInfo := task.ProcessInfo{
Pid: pid,
}
for _, p := range s.processes {
for _, p := range container.ExecdProcesses() {
if p.Pid() == int(pid) {
d := &options.ProcessDetails{
ExecID: p.ID(),
@@ -579,54 +446,63 @@ func (s *service) Pids(ctx context.Context, r *taskAPI.PidsRequest) (*taskAPI.Pi
// CloseIO of a process
func (s *service) CloseIO(ctx context.Context, r *taskAPI.CloseIORequest) (*ptypes.Empty, error) {
p, err := s.getProcess(r.ExecID)
container, err := s.getContainer()
if err != nil {
return nil, err
}
if stdin := p.Stdin(); stdin != nil {
if err := stdin.Close(); err != nil {
return nil, errors.Wrap(err, "close stdin")
}
if err := container.CloseIO(ctx, r); err != nil {
return nil, err
}
return empty, nil
}
// Checkpoint the container
func (s *service) Checkpoint(ctx context.Context, r *taskAPI.CheckpointTaskRequest) (*ptypes.Empty, error) {
s.mu.Lock()
p := s.task
s.mu.Unlock()
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
var opts options.CheckpointOptions
if r.Options != nil {
v, err := typeurl.UnmarshalAny(r.Options)
container, err := s.getContainer()
if err != nil {
return nil, err
}
opts = *v.(*options.CheckpointOptions)
}
if err := p.(*proc.Init).Checkpoint(ctx, &proc.CheckpointConfig{
Path: r.Path,
Exit: opts.Exit,
AllowOpenTCP: opts.OpenTcp,
AllowExternalUnixSockets: opts.ExternalUnixSockets,
AllowTerminal: opts.Terminal,
FileLocks: opts.FileLocks,
EmptyNamespaces: opts.EmptyNamespaces,
WorkDir: opts.WorkPath,
}); err != nil {
if err := container.Checkpoint(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
// Update a running container
func (s *service) Update(ctx context.Context, r *taskAPI.UpdateTaskRequest) (*ptypes.Empty, error) {
container, err := s.getContainer()
if err != nil {
return nil, err
}
if err := container.Update(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
// Wait for a process to exit
func (s *service) Wait(ctx context.Context, r *taskAPI.WaitRequest) (*taskAPI.WaitResponse, error) {
container, err := s.getContainer()
if err != nil {
return nil, err
}
p, err := container.Process(r.ExecID)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
p.Wait()
return &taskAPI.WaitResponse{
ExitStatus: uint32(p.ExitStatus()),
ExitedAt: p.ExitedAt(),
}, nil
}
// Connect returns shim information such as the shim's pid
func (s *service) Connect(ctx context.Context, r *taskAPI.ConnectRequest) (*taskAPI.ConnectResponse, error) {
var pid int
if s.task != nil {
pid = s.task.Pid()
if s.container != nil {
pid = s.container.Pid()
}
return &taskAPI.ConnectResponse{
ShimPid: uint32(os.Getpid()),
@@ -641,7 +517,7 @@ func (s *service) Shutdown(ctx context.Context, r *taskAPI.ShutdownRequest) (*pt
}
func (s *service) Stats(ctx context.Context, r *taskAPI.StatsRequest) (*taskAPI.StatsResponse, error) {
cg := s.getCgroup()
cg := s.container.Cgroup()
if cg == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "cgroup does not exist")
}
@@ -658,37 +534,6 @@ func (s *service) Stats(ctx context.Context, r *taskAPI.StatsRequest) (*taskAPI.
}, nil
}
// Update a running container
func (s *service) Update(ctx context.Context, r *taskAPI.UpdateTaskRequest) (*ptypes.Empty, error) {
s.mu.Lock()
p := s.task
s.mu.Unlock()
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
if err := p.(*proc.Init).Update(ctx, r.Resources); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
// Wait for a process to exit
func (s *service) Wait(ctx context.Context, r *taskAPI.WaitRequest) (*taskAPI.WaitResponse, error) {
p, err := s.getProcess(r.ExecID)
if err != nil {
return nil, err
}
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrFailedPrecondition, "container must be created")
}
p.Wait()
return &taskAPI.WaitResponse{
ExitStatus: uint32(p.ExitStatus()),
ExitedAt: p.ExitedAt(),
}, nil
}
func (s *service) processExits() {
for e := range s.ec {
s.checkProcesses(e)
@@ -706,12 +551,17 @@ func (s *service) sendL(evt interface{}) {
}
func (s *service) checkProcesses(e runcC.Exit) {
shouldKillAll, err := shouldKillAllOnExit(s.bundle)
container, err := s.getContainer()
if err != nil {
return
}
shouldKillAll, err := shouldKillAllOnExit(container.Bundle)
if err != nil {
log.G(s.context).WithError(err).Error("failed to check shouldKillAll")
}
for _, p := range s.allProcesses() {
for _, p := range container.All() {
if p.Pid() == e.Pid {
if shouldKillAll {
if ip, ok := p.(*proc.Init); ok {
@@ -724,7 +574,7 @@ func (s *service) checkProcesses(e runcC.Exit) {
}
p.SetExited(e.Status)
s.sendL(&eventstypes.TaskExit{
ContainerID: s.id,
ContainerID: container.ID,
ID: p.ID(),
Pid: uint32(e.Pid),
ExitStatus: uint32(e.Status),
@@ -754,26 +604,10 @@ func shouldKillAllOnExit(bundlePath string) (bool, error) {
return true, nil
}
func (s *service) allProcesses() (o []rproc.Process) {
s.mu.Lock()
defer s.mu.Unlock()
o = make([]rproc.Process, 0, len(s.processes)+1)
for _, p := range s.processes {
o = append(o, p)
}
if s.task != nil {
o = append(o, s.task)
}
return o
}
func (s *service) getContainerPids(ctx context.Context, id string) ([]uint32, error) {
s.mu.Lock()
p := s.task
s.mu.Unlock()
if p == nil {
return nil, errors.Wrapf(errdefs.ErrFailedPrecondition, "container must be created")
p, err := s.container.Process("")
if err != nil {
return nil, errdefs.ToGRPC(err)
}
ps, err := p.(*proc.Init).Runtime().Ps(ctx, id)
if err != nil {
@@ -789,7 +623,7 @@ func (s *service) getContainerPids(ctx context.Context, id string) ([]uint32, er
func (s *service) forward(publisher events.Publisher) {
for e := range s.events {
ctx, cancel := context.WithTimeout(s.context, 5*time.Second)
err := publisher.Publish(ctx, getTopic(e), e)
err := publisher.Publish(ctx, runc.GetTopic(e), e)
cancel()
if err != nil {
logrus.WithError(err).Error("post event")
@@ -797,84 +631,38 @@ func (s *service) forward(publisher events.Publisher) {
}
}
func (s *service) getProcess(execID string) (rproc.Process, error) {
func (s *service) getContainer() (*runc.Container, error) {
s.mu.Lock()
defer s.mu.Unlock()
if execID == "" {
return s.task, nil
}
p := s.processes[execID]
if p == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "process does not exist %s", execID)
}
return p, nil
}
func (s *service) getCgroup() cgroups.Cgroup {
s.mu.Lock()
defer s.mu.Unlock()
return s.cg
}
func (s *service) setCgroup(cg cgroups.Cgroup) {
s.mu.Lock()
s.cg = cg
container := s.container
s.mu.Unlock()
if err := s.ep.add(s.id, cg); err != nil {
logrus.WithError(err).Error("add cg to OOM monitor")
if container == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "container not created")
}
return container, nil
}
func getTopic(e interface{}) string {
switch e.(type) {
case *eventstypes.TaskCreate:
return runtime.TaskCreateEventTopic
case *eventstypes.TaskStart:
return runtime.TaskStartEventTopic
case *eventstypes.TaskOOM:
return runtime.TaskOOMEventTopic
case *eventstypes.TaskExit:
return runtime.TaskExitEventTopic
case *eventstypes.TaskDelete:
return runtime.TaskDeleteEventTopic
case *eventstypes.TaskExecAdded:
return runtime.TaskExecAddedEventTopic
case *eventstypes.TaskExecStarted:
return runtime.TaskExecStartedEventTopic
case *eventstypes.TaskPaused:
return runtime.TaskPausedEventTopic
case *eventstypes.TaskResumed:
return runtime.TaskResumedEventTopic
case *eventstypes.TaskCheckpointed:
return runtime.TaskCheckpointedEventTopic
default:
logrus.Warnf("no topic for type %#v", e)
func (s *service) getProcess(execID string) (rproc.Process, error) {
container, err := s.getContainer()
if err != nil {
return nil, err
}
return runtime.TaskUnknownTopic
p, err := container.Process(execID)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
func newInit(ctx context.Context, path, workDir, namespace string, platform rproc.Platform, r *proc.CreateConfig, options *options.Options) (*proc.Init, error) {
rootfs := filepath.Join(path, "rootfs")
runtime := proc.NewRunc(options.Root, path, namespace, options.BinaryName, options.CriuPath, options.SystemdCgroup)
p := proc.New(r.ID, runtime, rproc.Stdio{
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Terminal: r.Terminal,
})
p.Bundle = r.Bundle
p.Platform = platform
p.Rootfs = rootfs
p.WorkDir = workDir
p.IoUID = int(options.IoUid)
p.IoGID = int(options.IoGid)
p.NoPivotRoot = options.NoPivotRoot
p.NoNewKeyring = options.NoNewKeyring
p.CriuWorkPath = options.CriuWorkPath
if p.CriuWorkPath == "" {
// if criu work path not set, use container WorkDir
p.CriuWorkPath = p.WorkDir
}
return p, nil
}
// initialize a single epoll fd to manage our consoles. `initPlatform` should
// only be called once.
func (s *service) initPlatform() error {
if s.platform != nil {
return nil
}
p, err := runc.NewPlatform()
if err != nil {
return err
}
s.platform = p
return nil
}

726
runtime/v2/runc/v2/service.go Normal file
View File

@@ -0,0 +1,726 @@
// +build linux
/*
Copyright The containerd 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 v2
import (
"context"
"encoding/json"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
"sync"
"syscall"
"time"
"github.com/containerd/cgroups"
eventstypes "github.com/containerd/containerd/api/events"
"github.com/containerd/containerd/api/types/task"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/events"
"github.com/containerd/containerd/log"
"github.com/containerd/containerd/mount"
"github.com/containerd/containerd/namespaces"
rproc "github.com/containerd/containerd/runtime/proc"
"github.com/containerd/containerd/runtime/v1/linux/proc"
"github.com/containerd/containerd/runtime/v2/runc"
"github.com/containerd/containerd/runtime/v2/runc/options"
"github.com/containerd/containerd/runtime/v2/shim"
taskAPI "github.com/containerd/containerd/runtime/v2/task"
runcC "github.com/containerd/go-runc"
"github.com/containerd/typeurl"
ptypes "github.com/gogo/protobuf/types"
specs "github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
)
var (
_ = (taskAPI.TaskService)(&service{})
empty = &ptypes.Empty{}
)
// group labels specifies how the shim groups services.
// currently supports a runc.v2 specific .group label and the
// standard k8s pod label. Order matters in this list
var groupLabels = []string{
"io.containerd.runc.v2.group",
"io.kubernetes.cri.sandbox-id",
}
type spec struct {
Annotations map[string]string `json:"annotations,omitempty"`
}
// New returns a new shim service that can be used via GRPC
func New(ctx context.Context, id string, publisher events.Publisher) (shim.Shim, error) {
ep, err := runc.NewOOMEpoller(publisher)
if err != nil {
return nil, err
}
ctx, cancel := context.WithCancel(ctx)
go ep.Run(ctx)
s := &service{
id: id,
context: ctx,
events: make(chan interface{}, 128),
ec: shim.Default.Subscribe(),
ep: ep,
cancel: cancel,
containers: make(map[string]*runc.Container),
}
go s.processExits()
runcC.Monitor = shim.Default
if err := s.initPlatform(); err != nil {
cancel()
return nil, errors.Wrap(err, "failed to initialized platform behavior")
}
go s.forward(publisher)
return s, nil
}
// service is the shim implementation of a remote shim over GRPC
type service struct {
mu sync.Mutex
eventSendMu sync.Mutex
context context.Context
events chan interface{}
platform rproc.Platform
ec chan runcC.Exit
ep *runc.Epoller
// id only used in cleanup case
id string
containers map[string]*runc.Container
cancel func()
}
func newCommand(ctx context.Context, id, containerdBinary, containerdAddress string) (*exec.Cmd, error) {
ns, err := namespaces.NamespaceRequired(ctx)
if err != nil {
return nil, err
}
self, err := os.Executable()
if err != nil {
return nil, err
}
cwd, err := os.Getwd()
if err != nil {
return nil, err
}
args := []string{
"-namespace", ns,
"-id", id,
"-address", containerdAddress,
"-publish-binary", containerdBinary,
}
cmd := exec.Command(self, args...)
cmd.Dir = cwd
cmd.Env = append(os.Environ(), "GOMAXPROCS=4")
cmd.SysProcAttr = &syscall.SysProcAttr{
Setpgid: true,
}
return cmd, nil
}
func readSpec() (*spec, error) {
f, err := os.Open("config.json")
if err != nil {
return nil, err
}
defer f.Close()
var s spec
if err := json.NewDecoder(f).Decode(&s); err != nil {
return nil, err
}
return &s, nil
}
func (s *service) StartShim(ctx context.Context, id, containerdBinary, containerdAddress string) (string, error) {
cmd, err := newCommand(ctx, id, containerdBinary, containerdAddress)
if err != nil {
return "", err
}
grouping := id
spec, err := readSpec()
if err != nil {
return "", err
}
for _, group := range groupLabels {
if groupID, ok := spec.Annotations[group]; ok {
grouping = groupID
break
}
}
address, err := shim.SocketAddress(ctx, grouping)
if err != nil {
return "", err
}
socket, err := shim.NewSocket(address)
if err != nil {
if strings.Contains(err.Error(), "address already in use") {
if err := shim.WriteAddress("address", address); err != nil {
return "", err
}
return address, nil
}
return "", err
}
defer socket.Close()
f, err := socket.File()
if err != nil {
return "", err
}
defer f.Close()
cmd.ExtraFiles = append(cmd.ExtraFiles, f)
if err := cmd.Start(); err != nil {
return "", err
}
defer func() {
if err != nil {
cmd.Process.Kill()
}
}()
// make sure to wait after start
go cmd.Wait()
if err := shim.WriteAddress("address", address); err != nil {
return "", err
}
if err := shim.SetScore(cmd.Process.Pid); err != nil {
return "", errors.Wrap(err, "failed to set OOM Score on shim")
}
return address, nil
}
func (s *service) Cleanup(ctx context.Context) (*taskAPI.DeleteResponse, error) {
cwd, err := os.Getwd()
if err != nil {
return nil, err
}
path := filepath.Join(filepath.Dir(cwd), s.id)
ns, err := namespaces.NamespaceRequired(ctx)
if err != nil {
return nil, err
}
runtime, err := runc.ReadRuntime(path)
if err != nil {
return nil, err
}
r := proc.NewRunc(proc.RuncRoot, path, ns, runtime, "", false)
if err := r.Delete(ctx, s.id, &runcC.DeleteOpts{
Force: true,
}); err != nil {
logrus.WithError(err).Warn("failed to remove runc container")
}
if err := mount.UnmountAll(filepath.Join(path, "rootfs"), 0); err != nil {
logrus.WithError(err).Warn("failed to cleanup rootfs mount")
}
return &taskAPI.DeleteResponse{
ExitedAt: time.Now(),
ExitStatus: 128 + uint32(unix.SIGKILL),
}, nil
}
// Create a new initial process and container with the underlying OCI runtime
func (s *service) Create(ctx context.Context, r *taskAPI.CreateTaskRequest) (_ *taskAPI.CreateTaskResponse, err error) {
s.mu.Lock()
defer s.mu.Unlock()
container, err := runc.NewContainer(ctx, s.platform, r)
if err != nil {
return nil, err
}
s.containers[r.ID] = container
s.send(&eventstypes.TaskCreate{
ContainerID: r.ID,
Bundle: r.Bundle,
Rootfs: r.Rootfs,
IO: &eventstypes.TaskIO{
Stdin: r.Stdin,
Stdout: r.Stdout,
Stderr: r.Stderr,
Terminal: r.Terminal,
},
Checkpoint: r.Checkpoint,
Pid: uint32(container.Pid()),
})
return &taskAPI.CreateTaskResponse{
Pid: uint32(container.Pid()),
}, nil
}
// Start a process
func (s *service) Start(ctx context.Context, r *taskAPI.StartRequest) (*taskAPI.StartResponse, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
// hold the send lock so that the start events are sent before any exit events in the error case
s.eventSendMu.Lock()
p, err := container.Start(ctx, r)
if err != nil {
s.eventSendMu.Unlock()
return nil, errdefs.ToGRPC(err)
}
if err := s.ep.Add(container.ID, container.Cgroup()); err != nil {
logrus.WithError(err).Error("add cg to OOM monitor")
}
switch r.ExecID {
case "":
s.send(&eventstypes.TaskStart{
ContainerID: container.ID,
Pid: uint32(p.Pid()),
})
default:
s.send(&eventstypes.TaskExecStarted{
ContainerID: container.ID,
ExecID: r.ExecID,
Pid: uint32(p.Pid()),
})
}
s.eventSendMu.Unlock()
return &taskAPI.StartResponse{
Pid: uint32(p.Pid()),
}, nil
}
// Delete the initial process and container
func (s *service) Delete(ctx context.Context, r *taskAPI.DeleteRequest) (*taskAPI.DeleteResponse, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
p, err := container.Delete(ctx, r)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
// if we deleted our init task, close the platform and send the task delete event
if r.ExecID == "" {
s.mu.Lock()
delete(s.containers, r.ID)
hasContainers := len(s.containers) > 0
s.mu.Unlock()
if s.platform != nil && !hasContainers {
s.platform.Close()
}
s.send(&eventstypes.TaskDelete{
ContainerID: container.ID,
Pid: uint32(p.Pid()),
ExitStatus: uint32(p.ExitStatus()),
ExitedAt: p.ExitedAt(),
})
}
return &taskAPI.DeleteResponse{
ExitStatus: uint32(p.ExitStatus()),
ExitedAt: p.ExitedAt(),
Pid: uint32(p.Pid()),
}, nil
}
// Exec an additional process inside the container
func (s *service) Exec(ctx context.Context, r *taskAPI.ExecProcessRequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if container.ProcessExists(r.ExecID) {
return nil, errdefs.ToGRPCf(errdefs.ErrAlreadyExists, "id %s", r.ExecID)
}
process, err := container.Exec(ctx, r)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
s.send(&eventstypes.TaskExecAdded{
ContainerID: container.ID,
ExecID: process.ID(),
})
return empty, nil
}
// ResizePty of a process
func (s *service) ResizePty(ctx context.Context, r *taskAPI.ResizePtyRequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if err := container.ResizePty(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
// State returns runtime state information for a process
func (s *service) State(ctx context.Context, r *taskAPI.StateRequest) (*taskAPI.StateResponse, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
p, err := container.Process(r.ExecID)
if err != nil {
return nil, err
}
st, err := p.Status(ctx)
if err != nil {
return nil, err
}
status := task.StatusUnknown
switch st {
case "created":
status = task.StatusCreated
case "running":
status = task.StatusRunning
case "stopped":
status = task.StatusStopped
case "paused":
status = task.StatusPaused
case "pausing":
status = task.StatusPausing
}
sio := p.Stdio()
return &taskAPI.StateResponse{
ID: p.ID(),
Bundle: container.Bundle,
Pid: uint32(p.Pid()),
Status: status,
Stdin: sio.Stdin,
Stdout: sio.Stdout,
Stderr: sio.Stderr,
Terminal: sio.Terminal,
ExitStatus: uint32(p.ExitStatus()),
ExitedAt: p.ExitedAt(),
}, nil
}
// Pause the container
func (s *service) Pause(ctx context.Context, r *taskAPI.PauseRequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if err := container.Pause(ctx); err != nil {
return nil, errdefs.ToGRPC(err)
}
s.send(&eventstypes.TaskPaused{
container.ID,
})
return empty, nil
}
// Resume the container
func (s *service) Resume(ctx context.Context, r *taskAPI.ResumeRequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if err := container.Resume(ctx); err != nil {
return nil, errdefs.ToGRPC(err)
}
s.send(&eventstypes.TaskResumed{
container.ID,
})
return empty, nil
}
// Kill a process with the provided signal
func (s *service) Kill(ctx context.Context, r *taskAPI.KillRequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if err := container.Kill(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
// Pids returns all pids inside the container
func (s *service) Pids(ctx context.Context, r *taskAPI.PidsRequest) (*taskAPI.PidsResponse, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
pids, err := s.getContainerPids(ctx, r.ID)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
var processes []*task.ProcessInfo
for _, pid := range pids {
pInfo := task.ProcessInfo{
Pid: pid,
}
for _, p := range container.ExecdProcesses() {
if p.Pid() == int(pid) {
d := &options.ProcessDetails{
ExecID: p.ID(),
}
a, err := typeurl.MarshalAny(d)
if err != nil {
return nil, errors.Wrapf(err, "failed to marshal process %d info", pid)
}
pInfo.Info = a
break
}
}
processes = append(processes, &pInfo)
}
return &taskAPI.PidsResponse{
Processes: processes,
}, nil
}
// CloseIO of a process
func (s *service) CloseIO(ctx context.Context, r *taskAPI.CloseIORequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if err := container.CloseIO(ctx, r); err != nil {
return nil, err
}
return empty, nil
}
// Checkpoint the container
func (s *service) Checkpoint(ctx context.Context, r *taskAPI.CheckpointTaskRequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if err := container.Checkpoint(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
// Update a running container
func (s *service) Update(ctx context.Context, r *taskAPI.UpdateTaskRequest) (*ptypes.Empty, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
if err := container.Update(ctx, r); err != nil {
return nil, errdefs.ToGRPC(err)
}
return empty, nil
}
// Wait for a process to exit
func (s *service) Wait(ctx context.Context, r *taskAPI.WaitRequest) (*taskAPI.WaitResponse, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
p, err := container.Process(r.ExecID)
if err != nil {
return nil, errdefs.ToGRPC(err)
}
p.Wait()
return &taskAPI.WaitResponse{
ExitStatus: uint32(p.ExitStatus()),
ExitedAt: p.ExitedAt(),
}, nil
}
// Connect returns shim information such as the shim's pid
func (s *service) Connect(ctx context.Context, r *taskAPI.ConnectRequest) (*taskAPI.ConnectResponse, error) {
var pid int
if container, err := s.getContainer(r.ID); err == nil {
pid = container.Pid()
}
return &taskAPI.ConnectResponse{
ShimPid: uint32(os.Getpid()),
TaskPid: uint32(pid),
}, nil
}
func (s *service) Shutdown(ctx context.Context, r *taskAPI.ShutdownRequest) (*ptypes.Empty, error) {
s.mu.Lock()
// return out if the shim is still servicing containers
if len(s.containers) > 0 {
s.mu.Unlock()
return empty, nil
}
s.cancel()
os.Exit(0)
return empty, nil
}
func (s *service) Stats(ctx context.Context, r *taskAPI.StatsRequest) (*taskAPI.StatsResponse, error) {
container, err := s.getContainer(r.ID)
if err != nil {
return nil, err
}
cg := container.Cgroup()
if cg == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "cgroup does not exist")
}
stats, err := cg.Stat(cgroups.IgnoreNotExist)
if err != nil {
return nil, err
}
data, err := typeurl.MarshalAny(stats)
if err != nil {
return nil, err
}
return &taskAPI.StatsResponse{
Stats: data,
}, nil
}
func (s *service) processExits() {
for e := range s.ec {
s.checkProcesses(e)
}
}
func (s *service) send(evt interface{}) {
s.events <- evt
}
func (s *service) sendL(evt interface{}) {
s.eventSendMu.Lock()
s.events <- evt
s.eventSendMu.Unlock()
}
func (s *service) checkProcesses(e runcC.Exit) {
s.mu.Lock()
defer s.mu.Unlock()
for _, container := range s.containers {
if container.HasPid(e.Pid) {
shouldKillAll, err := shouldKillAllOnExit(container.Bundle)
if err != nil {
log.G(s.context).WithError(err).Error("failed to check shouldKillAll")
}
for _, p := range container.All() {
if p.Pid() == e.Pid {
if shouldKillAll {
if ip, ok := p.(*proc.Init); ok {
// Ensure all children are killed
if err := ip.KillAll(s.context); err != nil {
logrus.WithError(err).WithField("id", ip.ID()).
Error("failed to kill init's children")
}
}
}
p.SetExited(e.Status)
s.sendL(&eventstypes.TaskExit{
ContainerID: container.ID,
ID: p.ID(),
Pid: uint32(e.Pid),
ExitStatus: uint32(e.Status),
ExitedAt: p.ExitedAt(),
})
return
}
}
return
}
}
}
func shouldKillAllOnExit(bundlePath string) (bool, error) {
var bundleSpec specs.Spec
bundleConfigContents, err := ioutil.ReadFile(filepath.Join(bundlePath, "config.json"))
if err != nil {
return false, err
}
json.Unmarshal(bundleConfigContents, &bundleSpec)
if bundleSpec.Linux != nil {
for _, ns := range bundleSpec.Linux.Namespaces {
if ns.Type == specs.PIDNamespace {
return false, nil
}
}
}
return true, nil
}
func (s *service) getContainerPids(ctx context.Context, id string) ([]uint32, error) {
container, err := s.getContainer(id)
if err != nil {
return nil, err
}
p, err := container.Process("")
if err != nil {
return nil, errdefs.ToGRPC(err)
}
ps, err := p.(*proc.Init).Runtime().Ps(ctx, id)
if err != nil {
return nil, err
}
pids := make([]uint32, 0, len(ps))
for _, pid := range ps {
pids = append(pids, uint32(pid))
}
return pids, nil
}
func (s *service) forward(publisher events.Publisher) {
for e := range s.events {
ctx, cancel := context.WithTimeout(s.context, 5*time.Second)
err := publisher.Publish(ctx, runc.GetTopic(e), e)
cancel()
if err != nil {
logrus.WithError(err).Error("post event")
}
}
}
func (s *service) getContainer(id string) (*runc.Container, error) {
s.mu.Lock()
container := s.containers[id]
s.mu.Unlock()
if container == nil {
return nil, errdefs.ToGRPCf(errdefs.ErrNotFound, "container not created")
}
return container, nil
}
// initialize a single epoll fd to manage our consoles. `initPlatform` should
// only be called once.
func (s *service) initPlatform() error {
if s.platform != nil {
return nil
}
p, err := runc.NewPlatform()
if err != nil {
return err
}
s.platform = p
return nil
}

5
runtime/v2/shim.go
View File

@@ -99,7 +99,9 @@ type shim struct {
}
func (s *shim) Connect(ctx context.Context) error {
response, err := s.task.Connect(ctx, &task.ConnectRequest{})
response, err := s.task.Connect(ctx, &task.ConnectRequest{
ID: s.ID(),
})
if err != nil {
return err
}
@@ -317,6 +319,7 @@ func (s *shim) Wait(ctx context.Context) (*runtime.Exit, error) {
func (s *shim) Checkpoint(ctx context.Context, path string, options *ptypes.Any) error {
request := &task.CheckpointTaskRequest{
ID: s.ID(),
Path: path,
Options: options,
}

20
runtime/v2/shim/util.go
View File

@@ -19,6 +19,7 @@ package shim
import (
"context"
"fmt"
"io/ioutil"
"net"
"os"
"os/exec"
@@ -150,3 +151,22 @@ func WriteAddress(path, address string) error {
}
return os.Rename(tempPath, path)
}
// ErrNoAddress is returned when the address file has no content
var ErrNoAddress = errors.New("no shim address")
// ReadAddress returns the shim's abstract socket address from the path
func ReadAddress(path string) (string, error) {
path, err := filepath.Abs(path)
if err != nil {
return "", err
}
data, err := ioutil.ReadFile(path)
if err != nil {
return "", err
}
if len(data) == 0 {
return "", ErrNoAddress
}
return string(data), nil
}

31
services/tasks/local.go
View File

@@ -24,6 +24,7 @@ import (
"io/ioutil"
"os"
"path/filepath"
"strings"
"time"
api "github.com/containerd/containerd/api/services/tasks/v1"
@@ -687,8 +688,8 @@ func getCheckpointPath(runtime string, option *ptypes.Any) (string, error) {
}
var checkpointPath string
switch runtime {
case "io.containerd.runc.v1":
switch {
case checkRuntime(runtime, "io.containerd.runc"):
v, err := typeurl.UnmarshalAny(option)
if err != nil {
return "", err
@@ -699,7 +700,7 @@ func getCheckpointPath(runtime string, option *ptypes.Any) (string, error) {
}
checkpointPath = opts.ImagePath
case "io.containerd.runtime.v1.linux":
case runtime == plugin.RuntimeLinuxV1:
v, err := typeurl.UnmarshalAny(option)
if err != nil {
return "", err
@@ -721,8 +722,8 @@ func getRestorePath(runtime string, option *ptypes.Any) (string, error) {
}
var restorePath string
switch runtime {
case "io.containerd.runc.v1":
switch {
case checkRuntime(runtime, "io.containerd.runc"):
v, err := typeurl.UnmarshalAny(option)
if err != nil {
return "", err
@@ -732,8 +733,7 @@ func getRestorePath(runtime string, option *ptypes.Any) (string, error) {
return "", fmt.Errorf("invalid task create option for %s", runtime)
}
restorePath = opts.CriuImagePath
case "io.containerd.runtime.v1.linux":
case runtime == plugin.RuntimeLinuxV1:
v, err := typeurl.UnmarshalAny(option)
if err != nil {
return "", err
@@ -747,3 +747,20 @@ func getRestorePath(runtime string, option *ptypes.Any) (string, error) {
return restorePath, nil
}
// checkRuntime returns true if the current runtime matches the expected
// runtime. Providing various parts of the runtime schema will match those
// parts of the expected runtime
func checkRuntime(current, expected string) bool {
cp := strings.Split(current, ".")
l := len(cp)
for i, p := range strings.Split(expected, ".") {
if i > l {
return false
}
if p != cp[i] {
return false
}
}
return true
}

4
task.go
View File

@@ -642,12 +642,12 @@ func isCheckpointPathExist(runtime string, v interface{}) bool {
}
switch runtime {
case "io.containerd.runc.v1":
case plugin.RuntimeRuncV1, plugin.RuntimeRuncV2:
if opts, ok := v.(*options.CheckpointOptions); ok && opts.ImagePath != "" {
return true
}
case "io.containerd.runtime.v1.linux":
case plugin.RuntimeLinuxV1:
if opts, ok := v.(*runctypes.CheckpointOptions); ok && opts.ImagePath != "" {
return true
}

51
task_opts.go
View File

@@ -34,11 +34,6 @@ import (
"github.com/pkg/errors"
)
const (
v1runtime = "io.containerd.runtime.v1.linux"
v2runtime = "io.containerd.runc.v1"
)
// NewTaskOpts allows the caller to set options on a new task
type NewTaskOpts func(context.Context, *Client, *TaskInfo) error
@@ -99,23 +94,22 @@ func WithCheckpointName(name string) CheckpointTaskOpts {
// WithCheckpointImagePath sets image path for checkpoint option
func WithCheckpointImagePath(rt, path string) CheckpointTaskOpts {
return func(r *CheckpointTaskInfo) error {
switch rt {
case v1runtime:
if r.Options == nil {
r.Options = &runctypes.CheckpointOptions{}
}
opts, ok := r.Options.(*runctypes.CheckpointOptions)
if !ok {
return errors.New("invalid v1 checkpoint options format")
}
opts.ImagePath = path
case v2runtime:
if CheckRuntime(rt, "io.containerd.runc") {
if r.Options == nil {
r.Options = &options.CheckpointOptions{}
}
opts, ok := r.Options.(*options.CheckpointOptions)
if !ok {
return errors.New("invalid v2 checkpoint options format")
return errors.New("invalid v2 shim checkpoint options format")
}
opts.ImagePath = path
} else {
if r.Options == nil {
r.Options = &runctypes.CheckpointOptions{}
}
opts, ok := r.Options.(*runctypes.CheckpointOptions)
if !ok {
return errors.New("invalid v1 shim checkpoint options format")
}
opts.ImagePath = path
}
@@ -126,23 +120,22 @@ func WithCheckpointImagePath(rt, path string) CheckpointTaskOpts {
// WithRestoreImagePath sets image path for create option
func WithRestoreImagePath(rt, path string) NewTaskOpts {
return func(ctx context.Context, c *Client, ti *TaskInfo) error {
switch rt {
case v1runtime:
if ti.Options == nil {
ti.Options = &runctypes.CreateOptions{}
}
opts, ok := ti.Options.(*runctypes.CreateOptions)
if !ok {
return errors.New("invalid v1 create options format")
}
opts.CriuImagePath = path
case v2runtime:
if CheckRuntime(rt, "io.containerd.runc") {
if ti.Options == nil {
ti.Options = &options.Options{}
}
opts, ok := ti.Options.(*options.Options)
if !ok {
return errors.New("invalid v2 create options format")
return errors.New("invalid v2 shim create options format")
}
opts.CriuImagePath = path
} else {
if ti.Options == nil {
ti.Options = &runctypes.CreateOptions{}
}
opts, ok := ti.Options.(*runctypes.CreateOptions)
if !ok {
return errors.New("invalid v1 shim create options format")
}
opts.CriuImagePath = path
}