package runtime

import (
	"errors"

	"github.com/opencontainers/specs"
)

var (
	ErrNotChildProcess       = errors.New("containerd: not a child process for container")
	ErrInvalidContainerType  = errors.New("containerd: invalid container type for runtime")
	ErrCheckpointNotExists   = errors.New("containerd: checkpoint does not exist for container")
	ErrCheckpointExists      = errors.New("containerd: checkpoint already exists")
	ErrContainerExited       = errors.New("containerd: container has exited")
	ErrTerminalsNotSupported = errors.New("containerd: terminals are not supported for runtime")
)

// Runtime handles containers, containers handle their own actions
type Runtime interface {
	// Type of the runtime
	Type() string
	// Create creates a new container initialized but without it starting it
	Create(id, bundlePath, consolePath string) (Container, *IO, error)
	// StartProcess adds a new process to the container
	StartProcess(c Container, p specs.Process, consolePath string) (Process, *IO, error)
}