113 lines
3.5 KiB
Go
113 lines
3.5 KiB
Go
/*
|
|
NOTE: The API is in flux and mainly not implemented. Proceed with caution until further notice.
|
|
*/
|
|
package libcontainer
|
|
|
|
import (
|
|
"os"
|
|
"syscall"
|
|
|
|
"github.com/docker/libcontainer/cgroups"
|
|
"github.com/docker/libcontainer/configs"
|
|
"github.com/docker/libcontainer/network"
|
|
)
|
|
|
|
type Stats struct {
|
|
NetworkStats *network.NetworkStats `json:"network_stats,omitempty"`
|
|
CgroupStats *cgroups.Stats `json:"cgroup_stats,omitempty"`
|
|
}
|
|
|
|
// A libcontainer container object.
|
|
//
|
|
// Each container is thread-safe within the same process. Since a container can
|
|
// be destroyed by a separate process, any function may return that the container
|
|
// was not found.
|
|
type Container interface {
|
|
// Returns the ID of the container
|
|
ID() string
|
|
|
|
// Returns the current statusof the container.
|
|
//
|
|
// errors:
|
|
// Systemerror - System error.
|
|
Status() (configs.Status, error)
|
|
|
|
// Returns the current config of the container.
|
|
Config() configs.Config
|
|
|
|
// Returns the PIDs inside this container. The PIDs are in the namespace of the calling process.
|
|
//
|
|
// errors:
|
|
// ContainerDestroyed - Container no longer exists,
|
|
// Systemerror - System error.
|
|
//
|
|
// Some of the returned PIDs may no longer refer to processes in the Container, unless
|
|
// the Container state is PAUSED in which case every PID in the slice is valid.
|
|
Processes() ([]int, error)
|
|
|
|
// Returns statistics for the container.
|
|
//
|
|
// errors:
|
|
// ContainerDestroyed - Container no longer exists,
|
|
// Systemerror - System error.
|
|
Stats() (*Stats, error)
|
|
|
|
// Start a process inside the container. Returns the PID of the new process (in the caller process's namespace) and a channel that will return the exit status of the process whenever it dies.
|
|
//
|
|
// errors:
|
|
// ContainerDestroyed - Container no longer exists,
|
|
// ConfigInvalid - config is invalid,
|
|
// ContainerPaused - Container is paused,
|
|
// Systemerror - System error.
|
|
Start(process *Process) (pid int, err error)
|
|
|
|
// Destroys the container after killing all running processes.
|
|
//
|
|
// Any event registrations are removed before the container is destroyed.
|
|
// No error is returned if the container is already destroyed.
|
|
//
|
|
// errors:
|
|
// Systemerror - System error.
|
|
Destroy() error
|
|
|
|
// If the Container state is RUNNING or PAUSING, sets the Container state to PAUSING and pauses
|
|
// the execution of any user processes. Asynchronously, when the container finished being paused the
|
|
// state is changed to PAUSED.
|
|
// If the Container state is PAUSED, do nothing.
|
|
//
|
|
// errors:
|
|
// ContainerDestroyed - Container no longer exists,
|
|
// Systemerror - System error.
|
|
Pause() error
|
|
|
|
// If the Container state is PAUSED, resumes the execution of any user processes in the
|
|
// Container before setting the Container state to RUNNING.
|
|
// If the Container state is RUNNING, do nothing.
|
|
//
|
|
// errors:
|
|
// ContainerDestroyed - Container no longer exists,
|
|
// Systemerror - System error.
|
|
Resume() error
|
|
|
|
// Signal sends the specified signal to the init process of the container.
|
|
//
|
|
// errors:
|
|
// ContainerDestroyed - Container no longer exists,
|
|
// ContainerPaused - Container is paused,
|
|
// Systemerror - System error.
|
|
Signal(signal os.Signal) error
|
|
|
|
// Wait waits for the init process of the conatiner to die and returns it's exit status.
|
|
//
|
|
// errors:
|
|
// ContainerDestroyed - Container no longer exists,
|
|
// Systemerror - System error.
|
|
Wait() (exitStatus syscall.WaitStatus, err error)
|
|
|
|
// OOM returns a read-only channel signaling when the container receives an OOM notification.
|
|
//
|
|
// errors:
|
|
// Systemerror - System error.
|
|
OOM() (<-chan struct{}, error)
|
|
}
|