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