runtime

package
Version: v1.6.16 Latest Latest
Warning

This package is not in the latest version of its module.

Go to latest
Published: Jan 28, 2023 License: Apache-2.0 Imports: 11 Imported by: 836

Documentation

Index

Constants

View Source
const (
	// TaskCreateEventTopic for task create
	TaskCreateEventTopic = "/tasks/create"
	// TaskStartEventTopic for task start
	TaskStartEventTopic = "/tasks/start"
	// TaskOOMEventTopic for task oom
	TaskOOMEventTopic = "/tasks/oom"
	// TaskExitEventTopic for task exit
	TaskExitEventTopic = "/tasks/exit"
	// TaskDeleteEventTopic for task delete
	TaskDeleteEventTopic = "/tasks/delete"
	// TaskExecAddedEventTopic for task exec create
	TaskExecAddedEventTopic = "/tasks/exec-added"
	// TaskExecStartedEventTopic for task exec start
	TaskExecStartedEventTopic = "/tasks/exec-started"
	// TaskPausedEventTopic for task pause
	TaskPausedEventTopic = "/tasks/paused"
	// TaskResumedEventTopic for task resume
	TaskResumedEventTopic = "/tasks/resumed"
	// TaskCheckpointedEventTopic for task checkpoint
	TaskCheckpointedEventTopic = "/tasks/checkpointed"
	// TaskUnknownTopic for unknown task events
	TaskUnknownTopic = "/tasks/?"
)

Variables

View Source
var (
	// ErrTaskNotExists is returned when a task does not exist
	ErrTaskNotExists = errors.New("task does not exist")
	// ErrTaskAlreadyExists is returned when a task already exists
	ErrTaskAlreadyExists = errors.New("task already exists")
)

Functions

This section is empty.

Types

type ConsoleSize added in v1.0.0

type ConsoleSize struct {
	Width  uint32
	Height uint32
}

ConsoleSize of a pty or windows terminal

type CreateOpts added in v1.0.0

type CreateOpts struct {
	// Spec is the OCI runtime spec
	Spec *types.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 *types.Any
	// TaskOptions received for the task
	TaskOptions *types.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
}

CreateOpts contains task creation data

type ExecOpts added in v1.0.0

type ExecOpts struct {
	Spec *types.Any
	IO   IO
}

ExecOpts provides additional options for additional processes running in a task

type ExecProcess added in v1.6.0

type ExecProcess interface {
	Process

	// Delete deletes the process
	Delete(ctx context.Context) (*Exit, error)
}

ExecProcess is a process spawned in container via Task.Exec call. The only difference from a regular `Process` is that exec process can delete self, while task process requires slightly more complex logic and needs to be deleted through the task manager.

type Exit added in v1.0.0

type Exit struct {
	Pid       uint32
	Status    uint32
	Timestamp time.Time
}

Exit information for a process

type IO added in v1.0.0

type IO struct {
	Stdin    string
	Stdout   string
	Stderr   string
	Terminal bool
}

IO holds process IO information

type PlatformRuntime added in v1.2.0

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)
}

PlatformRuntime is responsible for the creation and management of tasks and processes for a platform.

type Process

type Process interface {
	// ID of the process
	ID() string
	// State returns the process state
	State(ctx context.Context) (State, error)
	// Kill signals a container
	Kill(ctx context.Context, signal uint32, all bool) error
	// ResizePty resizes the processes pty/console
	ResizePty(ctx context.Context, size ConsoleSize) error
	// CloseIO closes the processes IO
	CloseIO(ctx context.Context) error
	// Start the container's user defined process
	Start(ctx context.Context) error
	// Wait for the process to exit
	Wait(ctx context.Context) (*Exit, error)
}

Process is a runtime object for an executing process inside a container

type ProcessInfo added in v1.0.0

type ProcessInfo struct {
	// Pid is the process ID
	Pid uint32
	// Info includes additional process information
	// Info varies by platform
	Info interface{}
}

ProcessInfo holds platform specific process information

type State

type State struct {
	// Status is the current status of the container
	Status Status
	// Pid is the main process id for the container
	Pid uint32
	// ExitStatus of the process
	// Only valid if the Status is Stopped
	ExitStatus uint32
	// ExitedAt is the time at which the process exited
	// Only valid if the Status is Stopped
	ExitedAt time.Time
	Stdin    string
	Stdout   string
	Stderr   string
	Terminal bool
}

State information for a process

type Status added in v1.0.0

type Status int

Status is the runtime status of a task and/or process

const (
	// CreatedStatus when a process has been created
	CreatedStatus Status = iota + 1
	// RunningStatus when a process is running
	RunningStatus
	// StoppedStatus when a process has stopped
	StoppedStatus
	// DeletedStatus when a process has been deleted
	DeletedStatus
	// PausedStatus when a process is paused
	PausedStatus
	// PausingStatus when a process is currently pausing
	PausingStatus
)

type Task added in v1.0.0

type Task interface {
	Process

	// PID of the process
	PID(ctx context.Context) (uint32, error)
	// Namespace that the task exists in
	Namespace() string
	// Pause pauses the container process
	Pause(ctx context.Context) error
	// Resume unpauses the container process
	Resume(ctx context.Context) error
	// Exec adds a process into the container
	Exec(ctx context.Context, id string, opts ExecOpts) (ExecProcess, error)
	// Pids returns all pids
	Pids(ctx context.Context) ([]ProcessInfo, error)
	// Checkpoint checkpoints a container to an image with live system data
	Checkpoint(ctx context.Context, path string, opts *types.Any) error
	// Update sets the provided resources to a running task
	Update(ctx context.Context, resources *types.Any, annotations map[string]string) error
	// Process returns a process within the task for the provided id
	Process(ctx context.Context, id string) (ExecProcess, error)
	// Stats returns runtime specific metrics for a task
	Stats(ctx context.Context) (*types.Any, error)
}

Task is the runtime object for an executing container

type TaskInfo added in v1.0.0

type TaskInfo struct {
	ID        string
	Runtime   string
	Spec      []byte
	Namespace string
}

TaskInfo provides task specific information

type TaskList added in v1.0.0

type TaskList struct {
	// contains filtered or unexported fields
}

TaskList holds and provides locking around tasks

func NewTaskList added in v1.0.0

func NewTaskList() *TaskList

NewTaskList returns a new TaskList

func (*TaskList) Add added in v1.0.0

func (l *TaskList) Add(ctx context.Context, t Task) error

Add a task

func (*TaskList) AddWithNamespace added in v1.0.0

func (l *TaskList) AddWithNamespace(namespace string, t Task) error

AddWithNamespace adds a task with the provided namespace

func (*TaskList) Delete added in v1.0.0

func (l *TaskList) Delete(ctx context.Context, id string)

Delete a task

func (*TaskList) Get added in v1.0.0

func (l *TaskList) Get(ctx context.Context, id string) (Task, error)

Get a task

func (*TaskList) GetAll added in v1.0.0

func (l *TaskList) GetAll(ctx context.Context, noNS bool) ([]Task, error)

GetAll tasks under a namespace

func (*TaskList) IsEmpty added in v1.6.0

func (l *TaskList) IsEmpty() bool

type TaskMonitor added in v1.0.0

type TaskMonitor interface {
	// Monitor adds the provided container to the monitor.
	// Labels are optional (can be nil) key value pairs to be added to the metrics namespace.
	Monitor(task Task, labels map[string]string) error
	// Stop stops and removes the provided container from the monitor
	Stop(task Task) error
}

TaskMonitor provides an interface for monitoring of containers within containerd

func NewMultiTaskMonitor added in v1.0.0

func NewMultiTaskMonitor(monitors ...TaskMonitor) TaskMonitor

NewMultiTaskMonitor returns a new TaskMonitor broadcasting to the provided monitors

func NewNoopMonitor added in v1.0.0

func NewNoopMonitor() TaskMonitor

NewNoopMonitor is a task monitor that does nothing

Directories

Path Synopsis
linux
Package restart enables containers to have labels added and monitored to keep the container's task running if it is killed.
Package restart enables containers to have labels added and monitored to keep the container's task running if it is killed.
v1
v2

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL