process_tracker

Documentation

Index

• func PidFromFile(pidFilePath string, timeout time.Duration) (int, error)
• type LinkSignaller
  • func (e *LinkSignaller) Signal(signal *SignalRequest) error
• type MsgSender
• type NamespacedSignaller
  • func (n *NamespacedSignaller) Signal(request *SignalRequest) error
• type Process
  • func NewProcess(logger lager.Logger, id string, containerPath string, ...) *Process
  • func (p *Process) Attach(processIO garden.ProcessIO)
  • func (p *Process) ID() string
  • func (p *Process) Link()
  • func (p *Process) SetTTY(tty garden.TTYSpec) error
  • func (p *Process) Signal(signal garden.Signal) error
  • func (p *Process) Spawn(cmd *exec.Cmd, tty *garden.TTYSpec) (ready, active chan error)
  • func (p *Process) Wait() (int, error)
• type ProcessTracker
  • func New(logger lager.Logger, containerPath string, runner command_runner.CommandRunner) ProcessTracker
• type SignalRequest
• type Signaller
• type UnknownProcessError
  • func (e UnknownProcessError) Error() string

Functions

func PidFromFile

func PidFromFile(pidFilePath string, timeout time.Duration) (int, error)

Types

type LinkSignaller

type LinkSignaller struct {
}

func (*LinkSignaller) Signal

func (e *LinkSignaller) Signal(signal *SignalRequest) error

type MsgSender

type MsgSender interface {
	SendMsg(msg []byte) error
}

type NamespacedSignaller

type NamespacedSignaller struct {
	Runner        command_runner.CommandRunner
	ContainerPath string
	Logger        lager.Logger
	Timeout       time.Duration
}

Kills a process by invoking ./bin/wsh in the given container path using a PID read from the given pidFile

func (*NamespacedSignaller) Signal

func (n *NamespacedSignaller) Signal(request *SignalRequest) error

type Process

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

func NewProcess

func NewProcess(
	logger lager.Logger,
	id string,
	containerPath string,
	runner command_runner.CommandRunner,
	signaller Signaller,
) *Process

func (*Process) Attach

func (p *Process) Attach(processIO garden.ProcessIO)

func (*Process) ID

func (p *Process) ID() string

func (*Process) Link

func (p *Process) Link()

func (*Process) SetTTY

func (p *Process) SetTTY(tty garden.TTYSpec) error

func (*Process) Signal

func (p *Process) Signal(signal garden.Signal) error

func (*Process) Spawn

func (p *Process) Spawn(cmd *exec.Cmd, tty *garden.TTYSpec) (ready, active chan error)

func (*Process) Wait

func (p *Process) Wait() (int, error)

type ProcessTracker

type ProcessTracker interface {
	Run(processID string, cmd *exec.Cmd, io garden.ProcessIO, tty *garden.TTYSpec, signaller Signaller) (garden.Process, error)
	Attach(processID string, io garden.ProcessIO) (garden.Process, error)
	Restore(processID string, signaller Signaller)
	ActiveProcesses() []garden.Process
}

func New

func New(logger lager.Logger, containerPath string, runner command_runner.CommandRunner) ProcessTracker

type SignalRequest

type SignalRequest struct {
	Pid    string
	Signal syscall.Signal
	Link   MsgSender
}

type Signaller

type Signaller interface {
	Signal(*SignalRequest) error
}

type UnknownProcessError

type UnknownProcessError struct {
	ProcessID string
}

func (UnknownProcessError) Error

func (e UnknownProcessError) Error() string