Add shim start for shim creation

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

runtime/v2/binary.go

@@ -0,0 +1,106 @@
+/*
+   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"
+	"strings"
+
+	eventstypes "github.com/containerd/containerd/api/events"
+	"github.com/containerd/containerd/events/exchange"
+	"github.com/containerd/containerd/runtime"
+	client "github.com/containerd/containerd/runtime/v2/shim"
+	"github.com/containerd/containerd/runtime/v2/task"
+	"github.com/containerd/ttrpc"
+	"github.com/pkg/errors"
+)
+
+func shimBinary(ctx context.Context, bundle *Bundle, runtime, containerdAddress string, events *exchange.Exchange, rt *runtime.TaskList) *binary {
+	return &binary{
+		bundle:            bundle,
+		runtime:           runtime,
+		containerdAddress: containerdAddress,
+		events:            events,
+		rtTasks:           rt,
+	}
+}
+
+type binary struct {
+	runtime           string
+	containerdAddress string
+	bundle            *Bundle
+	events            *exchange.Exchange
+	rtTasks           *runtime.TaskList
+}
+
+func (b *binary) Start(ctx context.Context) (*shim, error) {
+	cmd, err := client.Command(ctx, b.runtime, b.containerdAddress, b.bundle.Path, "-id", b.bundle.ID, "start")
+	if err != nil {
+		return nil, err
+	}
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return nil, errors.Wrapf(err, "%s", out)
+	}
+	address := strings.TrimSpace(string(out))
+	conn, err := client.Connect(address, client.AnonDialer)
+	if err != nil {
+		return nil, err
+	}
+	client := ttrpc.NewClient(conn)
+	client.OnClose(func() { conn.Close() })
+	return &shim{
+		bundle:  b.bundle,
+		client:  client,
+		task:    task.NewTaskClient(client),
+		events:  b.events,
+		rtTasks: b.rtTasks,
+	}, nil
+}
+
+func (b *binary) Delete(ctx context.Context) (*runtime.Exit, error) {
+	cmd, err := client.Command(ctx, b.runtime, b.containerdAddress, b.bundle.Path, "-id", b.bundle.ID, "delete")
+	if err != nil {
+		return nil, err
+	}
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return nil, errors.Wrapf(err, "%s", out)
+	}
+	var response task.DeleteResponse
+	if err := response.Unmarshal(out); err != nil {
+		return nil, err
+	}
+	if err := b.bundle.Delete(); err != nil {
+		return nil, err
+	}
+	// remove self from the runtime task list
+	// this seems dirty but it cleans up the API across runtimes, tasks, and the service
+	b.rtTasks.Delete(ctx, b.bundle.ID)
+	// shim will send the exit event
+	b.events.Publish(ctx, runtime.TaskDeleteEventTopic, &eventstypes.TaskDelete{
+		ContainerID: b.bundle.ID,
+		ExitStatus:  response.ExitStatus,
+		ExitedAt:    response.ExitedAt,
+		Pid:         response.Pid,
+	})
+	return &runtime.Exit{
+		Status:    response.ExitStatus,
+		Timestamp: response.ExitedAt,
+		Pid:       response.Pid,
+	}, nil
+}