mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
116 lines
3.1 KiB
Go
116 lines
3.1 KiB
Go
/**
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# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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**/
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package edits
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
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"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
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"github.com/container-orchestrated-devices/container-device-interface/specs-go"
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ociSpecs "github.com/opencontainers/runtime-spec/specs-go"
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)
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type edits struct {
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cdi.ContainerEdits
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logger logger.Interface
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}
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// NewSpecEdits creates a SpecModifier that defines the required OCI spec edits (as CDI ContainerEdits) from the specified
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// discoverer.
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func NewSpecEdits(logger logger.Interface, d discover.Discover) (oci.SpecModifier, error) {
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c, err := FromDiscoverer(d)
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if err != nil {
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return nil, fmt.Errorf("error constructing container edits: %v", err)
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}
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e := edits{
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ContainerEdits: *c,
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logger: logger,
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}
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return &e, nil
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}
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// FromDiscoverer creates CDI container edits for the specified discoverer.
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func FromDiscoverer(d discover.Discover) (*cdi.ContainerEdits, error) {
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devices, err := d.Devices()
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if err != nil {
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return nil, fmt.Errorf("failed to discover devices: %v", err)
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}
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mounts, err := d.Mounts()
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if err != nil {
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return nil, fmt.Errorf("failed to discover mounts: %v", err)
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}
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hooks, err := d.Hooks()
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if err != nil {
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return nil, fmt.Errorf("failed to discover hooks: %v", err)
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}
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c := NewContainerEdits()
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for _, d := range devices {
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edits, err := device(d).toEdits()
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if err != nil {
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return nil, fmt.Errorf("failed to created container edits for device: %v", err)
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}
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c.Append(edits)
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}
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for _, m := range mounts {
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c.Append(mount(m).toEdits())
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}
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for _, h := range hooks {
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c.Append(hook(h).toEdits())
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}
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return c, nil
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}
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// NewContainerEdits is a utility function to create a CDI ContainerEdits struct.
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func NewContainerEdits() *cdi.ContainerEdits {
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c := cdi.ContainerEdits{
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ContainerEdits: &specs.ContainerEdits{},
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}
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return &c
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}
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// Modify applies the defined edits to the incoming OCI spec
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func (e *edits) Modify(spec *ociSpecs.Spec) error {
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if e == nil || e.ContainerEdits.ContainerEdits == nil {
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return nil
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}
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e.logger.Info("Mounts:")
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for _, mount := range e.Mounts {
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e.logger.Infof("Mounting %v at %v", mount.HostPath, mount.ContainerPath)
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}
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e.logger.Infof("Devices:")
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for _, device := range e.DeviceNodes {
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e.logger.Infof("Injecting %v", device.Path)
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}
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e.logger.Infof("Hooks:")
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for _, hook := range e.Hooks {
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e.logger.Infof("Injecting %v %v", hook.Path, hook.Args)
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}
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return e.Apply(spec)
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}
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