126 lines
4 KiB
Go
126 lines
4 KiB
Go
package runtime
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import (
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"errors"
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"time"
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"github.com/docker/containerd/specs"
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)
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var (
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// ErrContainerExited is returned when access to an exited
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// container is attempted
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ErrContainerExited = errors.New("containerd: container has exited")
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// ErrProcessNotExited is returned when trying to retrieve the exit
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// status of an alive process
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ErrProcessNotExited = errors.New("containerd: process has not exited")
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// ErrContainerNotStarted is returned when a container fails to
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// start without error from the shim or the OCI runtime
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ErrContainerNotStarted = errors.New("containerd: container not started")
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// ErrContainerStartTimeout is returned if a container takes too
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// long to start
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ErrContainerStartTimeout = errors.New("containerd: container did not start before the specified timeout")
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// ErrShimExited is returned if the shim or the contianer's init process
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// exits before completing
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ErrShimExited = errors.New("containerd: shim exited before container process was started")
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errNoPidFile = errors.New("containerd: no process pid file found")
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errInvalidPidInt = errors.New("containerd: process pid is invalid")
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errNotImplemented = errors.New("containerd: not implemented")
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)
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const (
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// ExitFile holds the name of the pipe used to monitor process
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// exit
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ExitFile = "exit"
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// ExitStatusFile holds the name of the file where the container
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// exit code is to be written
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ExitStatusFile = "exitStatus"
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// StateFile holds the name of the file where the container state
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// is written
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StateFile = "state.json"
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// ControlFile holds the name of the pipe used to control the shim
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ControlFile = "control"
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// InitProcessID holds the special ID used for the very first
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// container's process
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InitProcessID = "init"
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// StartTimeFile holds the name of the file in which the process
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// start time is saved
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StartTimeFile = "starttime"
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)
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// Checkpoint holds information regarding a container checkpoint
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type Checkpoint struct {
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// Timestamp is the time that checkpoint happened
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Created time.Time `json:"created"`
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// Name is the name of the checkpoint
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Name string `json:"name"`
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// TCP checkpoints open tcp connections
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TCP bool `json:"tcp"`
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// UnixSockets persists unix sockets in the checkpoint
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UnixSockets bool `json:"unixSockets"`
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// Shell persists tty sessions in the checkpoint
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Shell bool `json:"shell"`
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// Exit exits the container after the checkpoint is finished
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Exit bool `json:"exit"`
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// EmptyNS tells CRIU to omit a specified namespace
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EmptyNS []string `json:"emptyNS,omitempty"`
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}
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// PlatformProcessState container platform-specific fields in the ProcessState structure
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type PlatformProcessState struct {
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Checkpoint string `json:"checkpoint"`
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RootUID int `json:"rootUID"`
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RootGID int `json:"rootGID"`
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}
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// State represents a container state
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type State string
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// Resource regroups the various container limits that can be updated
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type Resource struct {
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CPUShares int64
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BlkioWeight uint16
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CPUPeriod int64
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CPUQuota int64
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CpusetCpus string
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CpusetMems string
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KernelMemory int64
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KernelTCPMemory int64
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Memory int64
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MemoryReservation int64
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MemorySwap int64
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}
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// Possible container states
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const (
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Paused = State("paused")
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Stopped = State("stopped")
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Running = State("running")
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)
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type state struct {
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Bundle string `json:"bundle"`
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Labels []string `json:"labels"`
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Stdin string `json:"stdin"`
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Stdout string `json:"stdout"`
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Stderr string `json:"stderr"`
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Runtime string `json:"runtime"`
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RuntimeArgs []string `json:"runtimeArgs"`
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Shim string `json:"shim"`
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NoPivotRoot bool `json:"noPivotRoot"`
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}
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// ProcessState holds the process OCI specs along with various fields
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// required by containerd
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type ProcessState struct {
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specs.ProcessSpec
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Exec bool `json:"exec"`
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Stdin string `json:"containerdStdin"`
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Stdout string `json:"containerdStdout"`
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Stderr string `json:"containerdStderr"`
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RuntimeArgs []string `json:"runtimeArgs"`
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NoPivotRoot bool `json:"noPivotRoot"`
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PlatformProcessState
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}
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