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package specs
import (
"errors"
"fmt"
spec "github.com/opencontainers/runtime-spec/specs-go"
)
// ApplyOCIEditsForDevice applies devices OCI edits, in other words
// it finds the device in the CDI spec and applies the OCI patches that device
// requires to the OCI specification.
func ApplyOCIEditsForDevice(config *spec.Spec, cdi *Spec, dev string) error {
for _, d := range cdi.Devices {
if d.Name != dev {
continue
}
return ApplyEditsToOCISpec(config, &d.ContainerEdits)
}
return fmt.Errorf("CDI: device %q not found for spec %q", dev, cdi.Kind)
}
// ApplyOCIEdits applies the OCI edits the CDI spec declares globablly
func ApplyOCIEdits(config *spec.Spec, cdi *Spec) error {
return ApplyEditsToOCISpec(config, &cdi.ContainerEdits)
}
// ApplyEditsToOCISpec applies the specified edits to the OCI spec.
func ApplyEditsToOCISpec(config *spec.Spec, edits *ContainerEdits) error {
if config == nil {
return errors.New("spec is nil")
}
if edits == nil {
return nil
}
if len(edits.Env) > 0 {
if config.Process == nil {
config.Process = &spec.Process{}
}
config.Process.Env = append(config.Process.Env, edits.Env...)
}
for _, d := range edits.DeviceNodes {
if config.Linux == nil {
config.Linux = &spec.Linux{}
}
config.Linux.Devices = append(config.Linux.Devices, d.ToOCI())
}
for _, m := range edits.Mounts {
config.Mounts = append(config.Mounts, m.ToOCI())
}
for _, h := range edits.Hooks {
if config.Hooks == nil {
config.Hooks = &spec.Hooks{}
}
switch h.HookName {
case "prestart":
config.Hooks.Prestart = append(config.Hooks.Prestart, h.ToOCI())
case "createRuntime":
config.Hooks.CreateRuntime = append(config.Hooks.CreateRuntime, h.ToOCI())
case "createContainer":
config.Hooks.CreateContainer = append(config.Hooks.CreateContainer, h.ToOCI())
case "startContainer":
config.Hooks.StartContainer = append(config.Hooks.StartContainer, h.ToOCI())
case "poststart":
config.Hooks.Poststart = append(config.Hooks.Poststart, h.ToOCI())
case "poststop":
config.Hooks.Poststop = append(config.Hooks.Poststop, h.ToOCI())
default:
fmt.Printf("CDI: Unknown hook %q\n", h.HookName)
}
}
return nil
}
// ToOCI returns the opencontainers runtime Spec Hook for this Hook.
func (h *Hook) ToOCI() spec.Hook {
return spec.Hook{
Path: h.Path,
Args: h.Args,
Env: h.Env,
Timeout: h.Timeout,
}
}
// ToOCI returns the opencontainers runtime Spec Mount for this Mount.
func (m *Mount) ToOCI() spec.Mount {
return spec.Mount{
Source: m.HostPath,
Destination: m.ContainerPath,
Options: m.Options,
}
}
// ToOCI returns the opencontainers runtime Spec LinuxDevice for this DeviceNode.
func (d *DeviceNode) ToOCI() spec.LinuxDevice {
return spec.LinuxDevice{
Path: d.Path,
Type: d.Type,
Major: d.Major,
Minor: d.Minor,
FileMode: d.FileMode,
UID: d.UID,
GID: d.GID,
}
}
|
