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In dockerd we already have a concept of a "runtime", which specifies the OCI runtime to use (e.g. runc). This PR extends that config to add containerd shim configuration. This option is only exposed within the daemon itself (cannot be configured in daemon.json). This is due to issues in supporting unknown shims which will require more design work. What this change allows us to do is keep all the runtime config in one place. So the default "runc" runtime will just have it's already existing shim config codified within the runtime config alone. I've also added 2 more "stock" runtimes which are basically runc+shimv1 and runc+shimv2. These new runtime configurations are: - io.containerd.runtime.v1.linux - runc + v1 shim using the V1 shim API - io.containerd.runc.v2 - runc + shim v2 These names coincide with the actual names of the containerd shims. This allows the user to essentially control what shim is going to be used by either specifying these as a `--runtime` on container create or by setting `--default-runtime` on the daemon. For custom/user-specified runtimes, the default shim config (currently shim v1) is used. Signed-off-by: Brian Goff <cpuguy83@gmail.com>
72 lines
3 KiB
Go
72 lines
3 KiB
Go
// +build linux
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package daemon
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import (
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"context"
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"time"
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"github.com/containerd/containerd"
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libcontainerdtypes "github.com/docker/docker/libcontainerd/types"
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specs "github.com/opencontainers/runtime-spec/specs-go"
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)
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type mockProcess struct {
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}
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func (m *mockProcess) Delete(_ context.Context) (uint32, time.Time, error) {
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return 0, time.Time{}, nil
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}
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// Mock containerd client implementation, for unit tests.
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type MockContainerdClient struct {
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}
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func (c *MockContainerdClient) Version(ctx context.Context) (containerd.Version, error) {
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return containerd.Version{}, nil
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}
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func (c *MockContainerdClient) Restore(ctx context.Context, containerID string, attachStdio libcontainerdtypes.StdioCallback) (alive bool, pid int, p libcontainerdtypes.Process, err error) {
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return false, 0, &mockProcess{}, nil
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}
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func (c *MockContainerdClient) Create(ctx context.Context, containerID string, spec *specs.Spec, shim string, runtimeOptions interface{}, opts ...containerd.NewContainerOpts) error {
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return nil
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}
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func (c *MockContainerdClient) Start(ctx context.Context, containerID, checkpointDir string, withStdin bool, attachStdio libcontainerdtypes.StdioCallback) (pid int, err error) {
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return 0, nil
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}
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func (c *MockContainerdClient) SignalProcess(ctx context.Context, containerID, processID string, signal int) error {
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return nil
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}
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func (c *MockContainerdClient) Exec(ctx context.Context, containerID, processID string, spec *specs.Process, withStdin bool, attachStdio libcontainerdtypes.StdioCallback) (int, error) {
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return 0, nil
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}
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func (c *MockContainerdClient) ResizeTerminal(ctx context.Context, containerID, processID string, width, height int) error {
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return nil
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}
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func (c *MockContainerdClient) CloseStdin(ctx context.Context, containerID, processID string) error {
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return nil
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}
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func (c *MockContainerdClient) Pause(ctx context.Context, containerID string) error { return nil }
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func (c *MockContainerdClient) Resume(ctx context.Context, containerID string) error { return nil }
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func (c *MockContainerdClient) Stats(ctx context.Context, containerID string) (*libcontainerdtypes.Stats, error) {
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return nil, nil
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}
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func (c *MockContainerdClient) ListPids(ctx context.Context, containerID string) ([]uint32, error) {
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return nil, nil
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}
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func (c *MockContainerdClient) Summary(ctx context.Context, containerID string) ([]libcontainerdtypes.Summary, error) {
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return nil, nil
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}
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func (c *MockContainerdClient) DeleteTask(ctx context.Context, containerID string) (uint32, time.Time, error) {
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return 0, time.Time{}, nil
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}
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func (c *MockContainerdClient) Delete(ctx context.Context, containerID string) error { return nil }
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func (c *MockContainerdClient) Status(ctx context.Context, containerID string) (containerd.ProcessStatus, error) {
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return "null", nil
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}
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func (c *MockContainerdClient) UpdateResources(ctx context.Context, containerID string, resources *libcontainerdtypes.Resources) error {
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return nil
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}
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func (c *MockContainerdClient) CreateCheckpoint(ctx context.Context, containerID, checkpointDir string, exit bool) error {
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return nil
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}
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