Move runtime to core/runtime

Signed-off-by: Derek McGowan <derek@mcg.dev>

core/runtime/runtime.go

@@ -0,0 +1,77 @@
+/*
+   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 runtime
+
+import (
+	"context"
+	"time"
+
+	"github.com/containerd/containerd/v2/core/mount"
+	"github.com/containerd/typeurl/v2"
+)
+
+// IO holds process IO information
+type IO struct {
+	Stdin    string
+	Stdout   string
+	Stderr   string
+	Terminal bool
+}
+
+// CreateOpts contains task creation data
+type CreateOpts struct {
+	// Spec is the OCI runtime spec
+	Spec typeurl.Any
+	// Rootfs mounts to perform to gain access to the container's filesystem
+	Rootfs []mount.Mount
+	// IO for the container's main process
+	IO IO
+	// Checkpoint digest to restore container state
+	Checkpoint string
+	// RuntimeOptions for the runtime
+	RuntimeOptions typeurl.Any
+	// TaskOptions received for the task
+	TaskOptions typeurl.Any
+	// Runtime name to use (e.g. `io.containerd.NAME.VERSION`).
+	// As an alternative full abs path to binary may be specified instead.
+	Runtime string
+	// SandboxID is an optional ID of sandbox this container belongs to
+	SandboxID string
+}
+
+// Exit information for a process
+type Exit struct {
+	Pid       uint32
+	Status    uint32
+	Timestamp time.Time
+}
+
+// PlatformRuntime is responsible for the creation and management of
+// tasks and processes for a platform.
+type PlatformRuntime interface {
+	// ID of the runtime
+	ID() string
+	// Create creates a task with the provided id and options.
+	Create(ctx context.Context, taskID string, opts CreateOpts) (Task, error)
+	// Get returns a task.
+	Get(ctx context.Context, taskID string) (Task, error)
+	// Tasks returns all the current tasks for the runtime.
+	// Any container runs at most one task at a time.
+	Tasks(ctx context.Context, all bool) ([]Task, error)
+	// Delete remove a task.
+	Delete(ctx context.Context, taskID string) (*Exit, error)
+}